RV A/C Modification that will DOUBLE the Output & BOOST Performance!

[@WhyWait]

⭐️SHOP ALL OF OUR PRODUCTS⭐️ ✅ Why Wait Amazon Page ✅ www.amazon.com/shop/__whywait__ All of our favorite RV gear, categorized & located on our Amazon Storefront.

[@nancyouellette6425]

Hey "Why Wait"! Miss 67 year old disabled, now reside in this 2006 Salem travel trailer. No one wanted to tackle the job with me so I did it all myself, play by play, watching& pausing until 6 am! Thank you sir, for YOU! Thank you for helping me to get this place functioning the way that makes so much good sense and daddy proud in Heaven watching and guiding through this triumph! You are a smart gem!

[@WhyWait]

This is excellent! Love hearing feedback like this and I’m glad it helped. Lots of useful videos like this on our channel.

[@ipozpop1]

😊

[@ipozpop1]

😊

[@commanderfootball]

Get a mini split ,mr.cool , change your life in rv!

[@donnarichardson2888]

We are WOMEN WARRIORS sister, and there's very little we can't do ourselves, I work on my own car, appliances, plumbing ect, and am 61 years old with 3 back surgeries, a neck surgery & a stroke. I just pray and ask GOD to help me in all I do. We can do ALL things through CHRIST who Strengthens us!! Proud of you sister!!

[@barbeychris2636]

Purchased: August 2023 - still works GREAT!I kzbin.infoUgkxxsUnXhGsSJLim_XnMHyQK0u3XVaW-CGn live in a studio and during the summer it gets scorching hot - really old building with no ac units. I can’t express how EASY it was to install. This unit has been a life savior during the summer and some days during other seasons where it can still be a bit warm at night. In this small place is my friend, a husky, poodle mix and myself. We need AC - lolI don’t use the dehumidifier option - I’m not sure if it will leak in my house, since I did not install the small draining hose that came with it. May look into it late but I don’t worry about much humidity in the apartment. I don’t understand why the negative reviews since all things mentioned, I personally did not find issues with. Definitely worth it!

[@ТимурЗлобин-э3ц]

*Great with keeping my 1st floor **Fastly.Cool** . Had a little struggle getting it to sit properly in my small window but once I got it situated it works perfectly.*

[@WhyWait]

Good deal. Glad it helped 👍🏼

[@kimberlyholland8864]

Saw this Last night and sent a link to my husband. I woke up this morning to find that he was outside, already doing this. 😀 Thank you.

[@WhyWait]

Haha that’s too funny! It’s a great mod. Everybody I know who has done this is happy with it. 👍🏼

[@jimmybyrne9864]

I also should have mentioned that when I did the modification and re-started the unit, I was amazed to see that the vents pushed out a lot of debris (small pieces of wood and dust) giving good indication of the improvement in the force of the new air flow produced. Thats Why wait.

[@solngv8]

This reminds me of intake manifold porting. Such a no-brainer for more efficient airflow. Good job!

[@WhyWait]

Definitely helps get the air where it needs to be faster. Thanks for stopping by and watching

[@rickhightower31]

Just amazed at how quiet. Sitting under the unit and can barely hear it running. The air flow is also much improved. This mod changed our unit significantly for the better. Great video explaining it all. A BIG thank you!

[@WhyWait]

Right on Rick! 👍🏼can’t beat it for just a few bucks and a couple hours of work. Glad it helped it. Make sure you check out our channel for other mods, tips and RV content. Thanks for watching 😁

[@andarooriordan5660]

3 solid tips in one video; vent pipe in mid-bunk, repel heat from furnace and topic of video (AC modification at units)

[@WhyWait]

Right on 👍🏼

[@newgeneration3496]

It’s funny, I did this to my unit a few weeks ago after seeing how in efficient it comes from the factory. I’m hvac certified & ur diy setup is top notch. Now whomever designed these units needs to return to school. Great video. Iv been keeping a eye out for condensation since the units designed to just dump in that area but so far so good. Gonna check out your other videos

[@WhyWait]

Thanks I’ll really appreciate it. Good to hear that coming from someone who is HVAC certified! Thanks for watching 👍🏼

[@Combat_Burrito]

I just did this in my solitude. Would you mind explaining where I should keep an eye out for any condensation? Thanks.

[@newgeneration3496]

@@Combat_Burrito sometimes if a plenum is too large and can not dump enough into the small ducts with the main vent being covered, it will drip right out of the main duct due to turbulence. This could be remedied by cutting some of the board covering the main vent that u covered (if ur unit has a large vent). You’ll notice it and it wouldn’t ruin ceiling panels or anything. Iv searched a lot and have not seen anyone complain of this and it’s quickly fixed without undoing everything you just did.

[@pr0pman]

@@newgeneration3496 Since the dump function is no longer there and all sealed, should there be some kind of access hole to make sure no condensation or have a small hole where the large dump was originally. Thank you, AL

[@davidhamel2663]

@@pr0pman That has not been an issue for mine (last two years). The a/c does run outside on the roof. I would think that had this been an issue it woul have occurred before I blocked it. At any rate no condensation issues in the trailer since doing this two years ago.

[@Silver19581]

We did this to ours about a month ago and were very surprised at all the openings into our roof area as well as openings between the intake and exhaust sides. We used the same foam as well as reflectix on areas we did not need foam. Results were outstanding. Three ducts had very little air flow and temps were no more than 8 to 10 degrees below ambient. Our ducts now blow air out with force and that is all ducts. Temps can drop 20 degrees making the trailer cold. We did use 1 inch with 1/2 inch on dump area and closed the dump off due to noise. Very quite and cold now with 13,500 ac in 22 foot trailer. Great mod. Wife is very happy now.

[@WhyWait]

This is so awesome to hear! What difference it can make uh? Amazing how bad they can come sealed up from the factory. Appreciate you watching our channel and stay cool 😎

[@timothybuchanan1611]

Can you explain what you mean by 1/2 in on dump area?

[@jackhall4680]

You went through the modification of the bunk area fairly quickly. Since I am not familiar with how the "loft" is constructed, and what angle of view was being shown. I am somewhat confused. If you have the time and inclination, a secondary video showing this might be helpful. Having said that my rig is VERY different, and I am just trying to understand what you did in yours so that I may be able to.modify it for mine

[@jimmybyrne9864]

Did this to my motorhome also, easy to do and the improvements on the air flow and noise is simply just amazing. I also noticed that the temperature is easily maintained to what I set it up to be. It also works perfectly with the heating function of the unit. My wife is really pleased with this improvement. Thanks

[@WhyWait]

That’s great to hear! Glad it worked out for you guys. Appreciate you watching 👍🏼

[@Combat_Burrito]

Great tutorial! I just did this to my main AC in our solitude and couldn't believe we actually saw a difference in airflow out the vents. Now to do the bedroom AC tomorrow and watch them work together. Thank you! This saved me $340 for the two inserts off the web.

[@WhyWait]

Appreciate it! Glad I could help. We have lots of videos on our channel about maintenance and how to’s for RVers. Thanks for watching and stay cool! 👍🏼

[@DaleMac56]

Hey new BFF! I did this to both my ACs and it dropped the bedroom from 86 to 72 and the living room from 89 to 76. 102 degrees outside. It will be a little cooler with the ceiling fan on. Also, I didn't notice in the bedroom AC, but the main AC center divider was centered. It had 6" of duct showing. I moved that over 2.5 inches where the duct will get the full 8.5 wide inlet that it was designed to get. The intake side was not affected, because it didn't require the full width. No bypassing either. Very cool! I can't thank you enough. Take care BFF! Dale

[@WhyWait]

That’s awesome Dale, glad it worked out for you! I know it’s pretty crazy once you open these things up to see how much air can be lost in the cracks and things not taped up correctly. My divider wall was off a bit as well. Appreciate you watching 👍🏼

[@ChasingtheJoneses]

We are also full-timers; this was a good video. We did something like this in our motorhome, and now we have a fifth wheel. I will certainly do this project.

[@lance76racing]

I just completed this modification. It’s better described as an upgrade. I can not believe the amount of air flow through the vents. Thank you for the video.

[@WhyWait]

That’s great to hear. So glad it could help. I know we are extremely happy with it. Thanks for watching 👍🏼

[@jasonspeltz8026]

Just did this to my A/C and the difference is night and day. Went to Home Depot and spent $15 on supplies. Thank you.

[@WhyWait]

Awesome! Glad it helped out. It definitely made a difference for us. Appreciate you stopping by and checking out our channel 👍🏼

[@Marc-py1qn]

I watched several videos on this issue and yours is by far the best and most useful. I appreciate that you took the time to go through the process step by step and made it easy. Thanks

[@WhyWait]

Thanks I appreciate that. I know it’s long but I figured if somebody wanted to do the project they would want the full details. 👍🏼

[@ericyoung6566]

Great video. I just finished adding this mod to my bedroom ac. It is much quieter than it had been and the airflow through the vents is great. I have an RV Airflow in the main ac, but thought I'd try this mod and save some money! Thanks for your very clear instructions!

[@bobjohnson6371]

I like it. I have a bunch of foam board laying around, and right in my budget wheelhouse. Thanks for posting, well done. !!!!

[@WhyWait]

Sure thing. It’s a great mod to move that air into the ducts faster!

[@dkleath8697]

I wish I had a son like you to figure these things out for me! 🤗 from 👵(who just subscribed) God Bless you & yours❣️

[@WhyWait]

Thank you so much! We definitely have a few videos on repairs and how to’s for RV life. This one definitely helps out during summer time though. Appreciate you watching and stay safe out there. 👍🏼😁

[@clifffrank5034]

I just did this mod to my mach 15 a/c's. Very easy and straightforward instructions and it feels like airflow has improved. A lot more cost effective compared to buying a $175.00 piece of plastic.

[@WhyWait]

Awesome, I’m glad to here it! Can’t beat a $10 mod to save some money. Appreciate you watching and checking out our channel.

[@Nitrocowboy1957.]

Thank you for this video tutorial. I installed it today along with a new AC unit. Instantly felt more air flow out of the vents. Very happy now.

[@WhyWait]

Good deal! It’s definitely a game changer for staying cool. 👍🏼

[@frankd3460]

Chris I can’t thank you enough. I followed your video which was perfectly explained unlike most other videos I found. Like others have stated the difference was phenomenal. Much appreciated.

[@WhyWait]

Great to hear Frank!…people seem to love it. Lots of good stuff like this on our channel 👍🏼

[@Elektricbrn]

Thanks for your input. I built my own version for my Coleman-Mach unit and air flow did increase by about 40% based on measurements by anemometer. Major improvement over the factory setup.

[@WhyWait]

Right on 👍🏼It definitely makes a difference right!

[@edsterling1522]

Great Job my man! I followed your process step-by-step, and what a difference! Thank you for the time and effort to share this with us - you ROCK!!

[@WhyWait]

Thanks a lot! Glad it worked out for ya 👍🏼 Definitely appreciate you stopping by and watching our channel.

[@davidhamel2663]

Did mine last year. My a/c was extremely loud, so loud we put in a sound bar in order to hear the tv. The a/c would not cool the trailer if it was 90 outside and the ducts blew very little. We dropped the bottom plate and were surprised to find one corner of the box had a 3/4 inch gap by 4" dumping into the attic while the opposing corner had about a 1/2 inch by 4" gap. The divider that seperates incoming air from cooled air was down about 1/2 by 10 or eleven inches allowing cooled air to be recirculated within the box. This kind of explains why the a/c at best could only drop the temps by 10 degrees at most and ran constantly (and loudly) day and night. We used foam to direct air flow, removed and correctly installed the divider in the a/c box, put Reflectix on all areas not covered by foam, sealed up the two corners and blocked the a/c duct from the inside of the dump plate with reflctix and aluminum tape. The end result of this was, the a/c now will make the inside of the rv downright cold. We no longer need the tv sound bar, we run it on low most of the time now. The trailer cools down quickly. For sound, you really don't hear it on low now and on high there is no more loud rumble, just the sound of air blowing across the rooms from All the ducts that before had little to none. At campgrounds others have commented on how quite it is compared to theirs. This was on a 2019 Grand Design 22RBE purchased new. Sad how poorly installed it was and how it is designed in such a way (universal) as to create tumbling misdirected air that as a result creates a loud roaring noise. Probably the best mod we have done to the rv as on low you no longer even hear the air but the rv is nice and cool. One more note, after doing this the a/c was not as quite as we wanted it to be though much quieter and working much, much better. I dropped the bottom plate and (I don't remember if I used 1/2 inch foam, reflectix or both) covered the dump area. There is a lot of turbulence around the dump area and nothing to block the sound. With the ducts now working so much better the dump was not necessary. This did the trick and brought the sound down to very, very low as in I could whisper with my wife on low and talk in a 'normal' voice with my wife on high.

[@WhyWait]

Thanks for sharing! Glad it all worked out for you 👍🏼 It’s a great mod for sure!

[@justinwilson6429]

Just did this exact mod to both of my AC units today and wow what a difference!! Huge improvement in airflow!

[@WhyWait]

Love it! I was just explaining this mod to a neighbor of mine yesterday saying everybody who had watched the video and done it has been really happy with the results. Thanks for watching and I hope you check out some of our other videos. 👍🏼

[@62impalaconvert]

Instead of the teepee, I made two quarter round sections by bending two cardboard pieces parallel to each of the corrugations, taping the top two ends together and taping the bottom two ends to the bottom of the outgoing vents. The taped together ends sit right up against the middle of the supply air hole. This might improve the air supply by making smooth transitions for the airflow to change direction 90 degrees to the left and right. Seems to work great. You could do the same thing with sheet metal or aluminum. Cut to size and wrap them around a paint can or similar to make the 90 degree bends.

[@WhyWait]

Sounds like it’s working out nice for you. 👍🏼 Good idea

[@FrdmFrmRlgn]

GREAT Mod. Worked better than expected ! One thing I did change was make a 2 inch hole through the center of the air deflector. (Top of triangle) so that I can still use the unit vents. Used an old vitamin bottle taped in place, does not affect the overall performance while closed, slight decrease while unit vent or vents are open. Still what a huge difference. $ 20 bucks 1.5 hrs start to finish. There is a commercial product called RV airflow system for $170. However it will eliminate the unit vents.

[@WhyWait]

Good deal and I like the mod if you still want the air dump! Hope you subscribed because our channel has lots of helpful videos like this 👍🏼 Appreciate you watching!!

[@gwenna1161]

Holy smokes! I Did this to my AC and what a difference! Better air throughout and way more quite!quote!! Took me about 3 hours.

[@WhyWait]

Good deal 👍🏼Glad it helped out

[@Salem-nj7wj]

Perfect step by step video and great results. Can’t wait for more upgrades to any rv, thanks!!

[@WhyWait]

Appreciate you checking it out and watching, thanks 👍🏼

[@WildDigger]

This is so much cheaper that that one you can spend $200 on for the same results! I am definitely doing this asap! The ductwork in campers is so sub-par.... Great video! 👍

[@WhyWait]

It is a shame that we have to go through and inspect all the duct work and vents and tape everything up. Mine were pretty decent but I’ve seen other people’s ducts with major gaps in them. Appreciate you stopping by and watching 👍🏼

[@georgelupian1516]

Wow , thank you for sharing this video, i actually did this project this weekend and it worked great, I was about to order one of the rv airflow systems for $170 when I seen your video. But thank you sooo much .

[@WhyWait]

Awesome! Love to hear that. We’ve been really happy with it since we did it too. Thanks for watching 👍🏼

[@prestonhummel9254]

I bought one of those systems and I'm still happy i did for this summer

[@RichM3215]

I did this modification today. Following your video really made it simple and easy. While I had everything apart I shined my light down the duct and glad I did. There were multiple gaps where the duct work joined together, so the a/c was cooling the space between the roof and the ceiling! It took me awhile to get them sealed. I can't believe how much more airflow there is and much quieter!! Thank you for the video.

[@WhyWait]

That’s great to hear Rich. It’s amazing how bad some of these ducts are taped up when you start opening things up!

[@RichM3215]

Do you think it's worth putting thin insulation around the evaporator box on the roof ac unit, or it's overkill? Thanks!

[@michaelputman8052]

Almost unbelievable! We are at the lake over 4th of July. No shade, it gets hot here. 15k ac struggles mightily here every year. We ate usually lucky to get mid 80s inside during the day and it takes hours to cool down at night. Did this before we left Friday morning, took about 20 minutes total. It's 74 inside right now, very comfortable throughout the camper! Awesome mod!!!

[@WhyWait]

Right on! We were pretty surprised how much it helped too. Just getting that air into the camper where it needs to be and out of the ducts is huge. Thanks for watching and glad it helped out.

[@vincebotkin1960]

Great video. I did do this to my 5th wheel with one different modification. After you install the two upper pieces,use a tape measure find center of the exhaust opening on the back wall and put a vertical mark down, then go 2” down 90 degrees off the foam and make two marks, then draw a line from your center line to the bottom of your unit ( where the metal ring is ) This shows the path of air from the exhaust to the vent entrance. Measure and cut your two pieces and cut the two ends with a opposite 45 degree towards each other. When you install this it will look like an upside down V. Tape up. Measure and temporary place the vertical end cap ( I cut mine in half ) trace the upside down V and cut off the excess. Tape it up. You have now increased the area for the intake air. This really increases the air flow !,,,

[@jamesmobley5994]

I just can’t quite picture this, but i know it would be good to shape the intake as well

[@vincebotkin1960]

@@jamesmobley5994 message me and I can show you pics

[@jamesmobley5994]

@@vincebotkin1960 thank you, it’s really awesome of you to offer, standby

[@warrensuton9066]

@@vincebotkin1960 I’d love a picture. How can we do this? Want my number to send a text picture??

[@vincebotkin1960]

@@warrensuton9066 yes I will sent pics.

[@ConnieCranfill]

Nice simple modification to a/c which was well explained, thank you. One minor point that struck me, and other people proposing this have also missed this. The divider should be sealed in place, but not replaced, Colman or the RV builder chose it because it is an acoustic absorber (foil one side and open faced on other) ideally your bottom sheet and any blank internal surfaces of plenum chamber should be lined with it, as long as it does not overly restrict airflow it will help to absorb fan and airflow noise. Acoustic suspended ceiling tiles (the ones they fit in the grids in big offices) are a good option, by all means use shiny tape on opposite side to airflow to seal everything up, but smooth hard surfaces propagate sound (noise is after all unwanted sound!). This is just an observation and not a criticism, I liked the simplicity of the concept.

[@ncurry1968]

Great video, very informative and a great idea! I’m wondering if there’s a simpler way though…that doesn’t require building a box and a pyramid. What if you just blocked off the vent from the a/c unit with a piece of the foam board and drilled two holes in it - either 3” diameter or 4” depending on what the ducts can handle. Then you do the same with each of the ducts running to the vents. Then connect a flexible foil hose that one uses for their clothes dryer - taping everything up nice and tight so there is nowhere for air to escape. Wouldn’t that create the same effect without all the extra building? You’d just need a 3” or 4” circular bit for your drill to run the hose into. You wouldn’t require the jigsaw or any 45° cuts, you could just use an exacto or carpet knife.

[@designpaulf]

Excellent step by step install, looks great! Makes you wonder why the manufacturers don't do a better job. I'm definitely going to do this on our unit! Thanks

[@WhyWait]

Good deal. Still been super happy with mine!

[@MikeForrest-z7l]

Hi Chris, Thanks for this great idea and video. I just completed this on our 36’ Arctic Fox Grande Ronde fifth wheel. The RV only came with one 15K BTU AC unit. Before I did this modification, I was worried that we needed to add a second AC in our bedroom as the flow put of the duct in the bedroom was very slow. I’m pleased to say that the difference after the modification is night and day. I have no doubt that in most climates we will be able to keep the RV cool with the single unit. The cost of the modification was about $30.00 plus some of my time. A unit from RV Airflow was $140 plus tax and shipping and I’d have also had to install it too. This is way better. Thanks again!

[@WhyWait]

Awesome! Glad this helped out and let’s hope it really makes a difference for you too. Haven’t really talked to anybody who’s done this and didn’t notice an improvement of the air getting pushed through the ducts quicker. Thanks for watching 👍🏼

[@markphillips590]

THANKS FOR THE GREAT VIDEO - WORKS GREAT! Just made the change two weeks ago - went on a 5 day trip in still hot Texas (not today - 37 and brrr) and it was so much better. We did not have to turn on the Closed Captions when watching TV, could actually talk to each other, and all but one vent was blowing great; BLOWING STRONG IN THE BEDROOM. Certainly plan to open the vent cover to the vent that is not blowing well to determine the problem, and will examine all of the vents so just make sure everything is looking good. The jigsaw works great, just know that you may need a mask and may want to try to contain the particles - they get everywhere - and they cling; but they vac up too! THANKS AGAIN!

[@WhyWait]

Awesome! Love hearing the good feedback. Glad it’s working for ya 👍🏼

[@MsPookiesmom]

Excellent video! You explain things simply, thank you. I will be doing this, because the "Airflow System" charges $170 for basically a piece of styrofoam, so good job.

[@WhyWait]

Yeah I me it’s fine if your not too handy but for $10 bucks and the same results you can’t beat this!

[@michaelplunkett8059]

​. The saved $160 buys nice steaks.

[@campersnspokes4485]

Thanks for this. I'd done this on my grand design (might have used this video then)but this was a great refresher on everything for my Montana.

[@WhyWait]

Glad it was helpful! Great mod for sure.

[@acmanwwjd1]

Also if you put a mister set up on the roof with a calcium filter to keep that head pressure down on the compressor works here in Redding 115 kept my coach at 75

[@TheAstuteTourist]

Great advice guys. Loving your channel. Happy to be part of your family.

[@WhyWait]

Thanks so much! We appreciate you watching 🤣

[@petepete3985]

Well-made video and I used it as a guide when doing my RV airbox. One change I made that increased the airflow dramatically was leaving out the old cold air director at the underside by the filters. This allows for more air intake from the interior and almost full use of the filters on either side. Took me about 3 hours and well worth the time just for the noise reduction factor.

[@WhyWait]

Glad it helped 👍🏼

[@daveanddianethrowingcautio5707]

Nice job. It's amazing what RV manufactures do that we just don't see and they don't want us to see LOL!!

[@WhyWait]

Hahaha well said!

[@richardhobbs7022]

I have 2 ac units in my 2000 zanzibar. 13500 22.5 year old ac in the rear and brand new 15000 front unit. I did the mod and now I have an interesting situation. I have the common duct that runs from front to rear. Now when I turn either one of the units(only one) then cold air comes out of the intake side of the other unit as well as all the vents. Increased air flow is an understatement. So are there negative effects from this situation?

[@mikeaarestad7546]

I did this on out two Coleman air conditioners. I did an additional mod on your design by opening up the bottom of the “V” to allow more intake air thru the filters. Also I opened up the plastic support accordingly in an area for more surface for intake air to come in. Nice modification Thanks

[@WhyWait]

That’s great. If I ever do it over I’d do something similar. Appreciate you watching and checking out our channel. 👍🏼

[@chopfer5864]

You have pictures of what your talking about?

[@Hugo-Hernandez]

Hey man I just completed my this weekend after just getting my rv two weeks ago. What a huge difference. Thank you for posting this video. Even when I was rv shopping I kept coming back to your video to be ready to do the modification once I got a rv. I watch your video I think 11 times lol 😂

[@WhyWait]

Haha that’s awesome...that you got your RV, I guess it’s awesome you watched my video 11 times too 😂😂 Be sure to follow us for other good RV tips and DIY. Thanks again for watching!

[@davidcrawford6505]

I just did this today, with my Coleman mach 15. It took several hours. Had to figure out how get the base board with the split ramp to fit into the opening. Other than that, it wasn't too difficult.

[@WayneTheSeine]

I went out and check mine, which has not been cooling like it should, and low and behold, there was a ton of cold air blowing into the hot air passage. Most of it coming from under the very edge of the frame. I will be doing this mod. Thanks

[@WhyWait]

Sure thing. Your welcome. You won’t regret it 👍🏼

[@JF-gz1hh]

I tried to do this myself and it’s harder than it looks! Your install was super clean and impressive. Looks like I need to go back to the drawing board! Haha.

[@WhyWait]

Oh no 😬 It’s all about the tape, the tape makes it look pretty lol

[@davidhamel2663]

It took me all day to fix the problems, attach reflectix and foam and aluminum tape it all. The return though was huge and immediate.

[@Jeff62-uo1kn]

Works great, I found that a drywall surform tool works great for smoothing out cuts, especially the angles.

[@WhyWait]

Nice tip! Glad the mod works for you. 👍🏼

[@DeeYohsGarage]

Installed the RVAirflow unit in our RV. You did a great job. Maybe even better, since I couldn't really tell if the side ducts lined up perfectly with the RVairflow box. Instead of channels in the foam board you could have just drilled holes for the lag bolts to go through. Also.. probably would have just removed the bolts and bottom plate completely for easier access. It's awesome for sure!

[@Cayenada]

hi peeps i been living in rvs all my life .. this is a great video but more important pull the roof vents inside off .. u will see that your cold air is prolloy all going into the roof ... youe wecome

[@kidz4god]

Thank you so much for sharing this diy!! Our main ac went out last year and our 2nd unit is for the bedroom only. The replacement ac was so noisy we couldn't watch TV and never really cooled our RV. There was barely any output from the vents in the living room or bedroom. The mod was simple for me to complete with little assistance. This one ac has our entire RV at a comfy 75°. We've already shared your video with others and are recommending they do theirs as well! Thanks again!!

[@WhyWait]

Oh that’s awesome Tami! So glad to hear it’s working out for you. I know we are happy with it. Make sure to subscribe because we have lots of videos on RV DIY projects, mods, maintenance and more. Thanks for watching! 👍🏼😊

[@jeffs.2431]

This upgrade is definitely on my list. Think I’ll try using a table saw instead though. Thanks for the video.

[@WhyWait]

If only us full timers could travel with a table saw!! 😂😂 Thanks for watching and good luck. Stay cool

[@SenorSuperRudy]

Realizing side effect of this mod... I did the mod over a year ago, works as advertised, thank you for the video. This year I realized the improvement has resulted in the compressor cycling when starting RV setup when it is high 70s outside (trailer in mid 80s inside)....the compressor/coil freeze detection is kicking in. Running on high improves results with less cycling. The issue is the AC works too well, the air temp (intake vs discharge) difference is very high, 35-39 degrees when it is near 100F outside. This side effect results in slower trailer cool down rate when outside temps drop and freeze detection cut off starts (but awesome when hot outside).... This has only presented when the inside trailer temp is desirable so I don't need to correct, but am curious if any DIY airflow or RV airflow users have realized similar?

[@MissionaryForMexico]

I installed a Midia window unit in my bedroom emergency window exit. By far the quietest window unit! It is 12,000 BTU with inverter technology, extremely energy efficient! Paid only $300 at sam's club. Compared to $700 for new roof unit. Roof units are extremely old in efficient technology!

[@4BLivestock]

Did this mod a couple weeks ago, great improvement! Thanks for the info!

[@WhyWait]

Sweet! I’m glad it helped you out and appreciate you watching. Lots of cool tips, DIY’s and things like that on our channel 👍🏼

[@thunderbird0428]

I've done this to my RV but I opened up my intake it improves the airflow even more.

[@WhyWait]

Sure thing, definitely. When I put it back together I left the one piece with the dump channel off. Appreciate you watching! 👍🏼

[@drewgreen5563]

Completed this last night and amazed at the difference!! Thank you for the tutorial. Worked perfectly!! Oh and thanks for saving me $300 or so!!

[@WhyWait]

Hahaha sure thing!! I’m glad it worked out and i appreciate you watching 👍🏼

[@4everlandrv988]

Great idea, great design. Can't use the dump for air, but could put a filter over them and open them for additional air return. Chief

[@WhyWait]

Thank you! 👍🏼We never used the dumps anyways. When I put it back together I left that whole piece off with the track so that there’s more area for the return air.

[@RVTIPSANDTRAVELS]

thanks for sharing Chris, been wanting to do this. once the trailer is back from inspection...

[@WhyWait]

It’s a big boost in performance! Very noticeable difference. We are battling 115 degree heat out here by Death Valley and I did this mod just in time!

[@jasonkruse619]

ILL CHECK BACK AFTER I GET THIS DONE. NEW DOMETIC 15K BTU FRESHJET 3 IS ICING UP BOLWS HARD WITH COVER OFF BUT CREATING BACK PRESSURE.

[@diplotek]

I'll be brief - thanks Chris!!! Subscribed and rang the bell :)

[@WhyWait]

Appreciate that. Here’s the follow up video 3 years after the mod. RV A/C Modification 3 Year Review! / Stay COOL for $25 kzbin.info/www/bejne/fHzMeYlpbd9_gNU

[@rvfox3314]

I did a similar mod prior watching your video and it worked okay too, but because I am running on batteries, solar and inverter it still was to much power draw. So, I added a relative affordable ($450) Inverter Window AC (12000 BTU) and it runs on seamless speed and uses a fraction of the power, plus is much more quite. The install was much easier and cheaper then adding a mini split inverter AC

[@WhyWait]

Good deal!! 👍🏼 Sounds like a nice mod

[@hardtruth2039]

Outstanding video! I’m planning to do this on our rig. The only difference is I plan to open up the bottom of the foam under the peak and in the middle divider to allow for better return air. This will allow better filtration as well because return air will go through the entire filter length. Just my reasoning.

[@WhyWait]

Awesome, Sounds like a good plan! I think that’s a great idea for sure. As always appreciate you stopping over. 👍🏼

[@racrx7]

Great how to video. If I may make a suggestion, stay on point with the advertised project. The bunk room vent mod is “cool”, but just quick link it to another video. Not all RVs have that bunk room setup. 👍🏻

[@WhyWait]

Thanks. Old video of mine, the whole video itself could be so much better hahaha I think my newer stuff has come a long way. Thanks for watching.

[@SCGATOR2001]

I did this mod on my two A/C units in my RV. FANTASIC! Both are quieter and both cool better. I was shocked how much air was coming from the discharge back to the suction. COMMENTS" 1. Use a small handsaw, no jig saw is needed 2. DO NOT IGNORE THE SUCTION/supply. One of my units was in contact with HOT outside. A few panels strategically placed stopped sucking in that HOT air 3. I did NOT remove the panel in between the suction and discharge of the fan. Instead, I placed a panel on the suction side and TWO on the discharge side. The second panel on the discharge side was cut ONE INCH shorter to allow the bottom panel to have a place to sit flush. Do this ASAP. You will wonder how you ever put up with all that noise.

[@WhyWait]

Good deal. Glad it’s helping out 👍🏼

[@christopherpacker3750]

Excellent video. After watching I made two of these for my class c. The result was better than expected, thanks for showing the way.

[@WhyWait]

Right on! Appreciate you watching and I’m glad it worked out for you. Everybody who’s done this mod seems really happy with the results.

[@davidnoll156]

I finally did this to our 2021 Rockwood mini lite. The air flow is a lot better and also about 8 to 10 decibels quieter. I did not get a chance for a good review due to some stormy weather but I think it will a great improvement. Thanks for the instructional video

[@WhyWait]

Nice! Glad it worked out and helped a bit. Appreciate you checking out our channel. 👍🏼

[@geofflyons2280]

Great idea, really appreciate your thoroughness’s, and workmanship , very clean .

[@WhyWait]

Thank you Geoff. Appreciate that. 👍🏼

[@dkleath8697]

WOW! GREAT RESULTS!! Nice Job! Thanks for sharing!

[@proceedingonwardinamerica]

Wow great job. In our rv we have the new one that’s built in the ceiling. great tip on the mid bunk now I got to go look and see. Fun fact I saw on changing lanes channel there’s a piece like that for sell, granted you way is cheaper so that’s good. And we have that same sign on our room work like a captain play like a pirate.

[@WhyWait]

Haha that’s awesome! Yes Corbin’s room had a sailor theme to it since he was young, why am I not surprised you guys have that sign too?🤔🤣

[@markbond6196]

Great instructional video. I'm headed to Lowes right now. Especially considering there's a company selling foam inserts to do the same thing for $170.00.

[@WhyWait]

Appreciate that Mark. Hope the project goes well for you and thanks for watching 👍🏼

[@roybest8403]

Great video! i had the material for a few weeks and finally got around to doing this mod. Absolutely amazed at the airflow its down to 71 from 90 in 2 hrs and dropping. We are in south FL and the humidity is 100%. we only have one ac i can ck off the second ac no need. I can only think of one thing to make it better.......install my home central unit in it lol.

[@WhyWait]

Hahaha That’s awesome! Glad it helped. Appreciate you stopping by our channel and watching. 👍🏼

[@davidhamel2663]

Ours will get in the mid to upper 60s now, a huge difference at 90 ambient.

[@timurray2000]

You temp drop sounds right...2 hours to drop 19 degrees. I'm not sure how Why Wait dropped 9 degrees in 11 minutes. I've never seen anywhere near that performance even with 3 A/C units running.

[@chasinspring]

That would be more like the pre-fab RV Airflow

[@dustinwoodyard3524]

It also looks like you could make use of the entire grill and filter for return

[@WhyWait]

Indeed you can 👍🏼👍🏼

[@randypetty3066]

We have 1 AC in a small couples fifth wheel. The bedroom doesn’t get much airflow - AC is in living area. I did this to our single and achieved 37% increase in air flow in the bed room. In the living area on the sofa near the AC unit there was a 10dB reduction in noise. This may have allowed us to defer buying a second AC for the bedroom!

[@WhyWait]

Oh yeah! 👍🏼 Right on, it’s a game changer. Thanks for watching.

[@bruceprichard2996]

Thanks for your video, well done. Unfortunately, Rockwood used the area to route a number of wires making this project not work for me 😢.

[@WhyWait]

Sure thing, hope you subscribed because we have lots of helpful videos like this 👍🏼 Bummer it didn’t work out. Well you can still make sure everything everywhere is taped up real good so your not losing air anywhere.

[@GabrielRosas-b9y]

Great job Chris. Very thorough and relaxed presentation. Gave me the confidence to do this project on my 32 foot Flagstaff, VLite. I turned on the AC and it does sound quieter however, any guesses as to why I now have a high-pitched buzzing sound? Once again, great job on this video.

[@WhyWait]

@@GabrielRosas-b9y appreciate you watching. Glad you got it done. Not sure about that noise, maybe you have some air hissing out somewhere. Not sure to be honest. Here’s a review I did recently since this video was over 3 years ago. RV A/C Modification 3 Year Review! / Stay COOL for $25 kzbin.info/www/bejne/fHzMeYlpbd9_gNU

[@krnwhitlow]

Nice job I love doing things like this..I'm a big diy person 🎉

[@WhyWait]

This is one project everybody loves and definitely makes a difference. Just checking your ducts and making sure everything is taped up properly in all of them is huge in itself. 👍🏼

[@mrnotnomis]

In the Crafting world, there is a special foam cutter that uses a hot wire for cutting this kind of foam. If you use one, don't breathe the fumes. Also, remember that there is almost no resistance when you're cutting foam with heat, so you have to keep it under tight control. That said, the cuts a clean and sealed with no foam debris trying to stick to anything, and tight shapes and curves are simple.

[@WhyWait]

Thank you. I know all about these because I have one of those actually and use it to carve foam pumpkins. Appreciate you watching

[@richardmcgregor8265]

Fantastic modification. I'm going to pick up materials and do my rv.

[@WhyWait]

Good deal. It really does make a difference 👍🏼

[@chadeverett5423]

WOW…..Great video and tutorial. Thanks for taking the time and saving me lots of money to spend elsewhere. Gonna do the bedroom tomorrow!!! Thanks again and Happy Camping(Fulltime in your case)🤣

[@WhyWait]

Awesome! Glad you found our channel and hopefully it helps you guys. 👍🏼Enjoy the cooler air flow!

[@CompassRoadz]

Awesome vid! Our rig has the RV air flow system in the living area. We will be in Arkansas in August so we are going to do this mod. Already foil taped as you saw in our cleaning video. Thanks for the tutorial.

[@WhyWait]

Sure thing. Appreciate you guys stopping by as always. Happy moding when you do the project!

[@jeremydeason3295]

Great info! Might make it a little easier with HVAC duct board? no discredit to what your doing with foam just might be a little easier, can be cut with a knife vs jig saw?! keep up the good work, hope this helps someone do it easier!

[@WhyWait]

@@jeremydeason3295 here’s how it’s held up 3 years later. RV A/C Modification 3 Year Review! / Stay COOL for $25 kzbin.info/www/bejne/fHzMeYlpbd9_gNU

[@jeremydeason3295]

@@WhyWait can't argue with that! great hack!

[@adventuresofwolfcougar9423]

We have two AC units on our 36 footer, and they can't keep up with triple digit temps. I'm definitely going to try this.

[@WhyWait]

Good deal. Hopefully this is something that will work with your style AC units. If so it’s definitely a big help. Plus make sure your units up top are properly cleaned each year 👍🏼

[@richienotsorich4303]

Great idea and great video. I stumbled upon it because my ac works very well but is freezing up. I'm definitely going to do this once I figure out what is going on with mine. Thank you. 👍

[@WhyWait]

Make sure to check that your thermostat wire going into your fins is still pushed in there good. They are known to rattle out sometimes which would cause it to freeze up.

[@JRayClips]

I watched the whole video then my AC unit looks way different lol love the vid tho man 👍🏻

[@WhyWait]

Oh man…bummer. Yeah some units can’t do this mod. Thanks for watching anyways. 👍🏼

[@WinesPinesandCanines]

Great video! Awesome tutorial. Ours unfortunately is a non ducted system but we will be keeping this upgrade in mind on our next camper (someday!).

[@WhyWait]

It’s been pretty surprising on much more air gets forced through the system quicker! Thanks as always for stopping by😊

[@broncobill392]

This is a great idea/mod! I’ll definitely be doing this when we get a replacement for our toy hauler. 👍🏽👍🏽👍🏽👍🏽

[@WhyWait]

Thanks, It’s worked great for us. Appreciate you watching and good luck moding!

[@mikesheating8586]

I’m wondering how this effects the static pressure on the air conditioner.

[@tjgorla]

A hot knife or wire foam cutter also works well and are very compact

[@WhyWait]

Excellent ideas!! I even have a hot knife and didn’t think about it. Thanks for sharing and watching!

[@tjgorla]

@@WhyWait thank you sir. That's why we are here to share ideas.

[@rsdaarud]

Great, another project for the Storm! But very worthy...

[@WhyWait]

Definitely a difference maker in cooling down the RV quicker!

[@rsdaarud]

Got it done and A/C is quieter and cooler!

[@mikefry334]

I have a different model of A/C but the principal still applied. I created a similar baffle and the air flow is better. Not sure it made it quieter but maybe it won't run as much. Thanks.

[@WhyWait]

Awesome. That’s what I’ve told other people who have different AC units, it’s the same idea with any of them. Thanks for watching!

[@glrogers67]

Great video. I know what I'm doing tomorrow. I cand stand the low pressure in my vents. I can't wait to see how much this will help

[@WhyWait]

Awesome! Definitely appreciate you stopping by and watching. Good luck and hope it helps!

[@glrogers67]

@@WhyWait got it done. That was pretty easy to do, and such a big improvement. Thanks

[@anthonynardella8907]

I would like to see a video on the newer whisper quiet a/c systems. I cannot see my a/c from the inside. It goes directly in to the ducts but of course not all vents have great airflow. I'm wondering how I can improve upon it just like this.

[@WhyWait]

I’m not sure. These units are suppose to best on the market, while they are not the whisper quiet models they are suppose to be more efficient than those.

[@xavier6130]

Remove the vent covers and HVAC tape any gaps in the ducts to prevent air from escaping into the ceiling. Clean the coils / do routine maintenance on your AC. If your ducts have a "race track" (same duct to multiple vents) layout, place some doorknob bumpers (the things that protect your walls from getting damaged by opening the door so hard the doorknob slams into them) in the ducts above the vents to divert airflow to them. Close off any extra length of duct beyond the last vent as it's useless and just messes up airflow. Maybe even remove the rooftop AC unit itself and check the ducts under it? (May not be worth it.)

[@mackattack8627]

Yes they sell those now made from foam with new vents to align with the new flow path part it's made from foam