DIY Evap Air Cooler! Best Yet! 1500CFM/20MPH (90Fin/64Fout) 500-1000 Sq.ft. run AC/DC/Solar/Batt

DIY Evap. Air Cooler! This Compact "Cube Style" Evap. Cooler couldn't work better. it has super strong 1500 CFM Air-Flow (2000 Max.), drops temps up to 30F (from 90F to 64F) *in testing, and has a 14 gallon water reservoir for an *8-10 hr run time. the unit is 12V so one 12v solar panel runs it. (a 12v battery or cars cig. lighter socket can also power it) and with small modification it can be AC powered. note that it's only slightly larger than the "five gallon bucket" evap air cooler but has 10 times the cooling power. its skeletal frame doubles as the plumbing and the rest of it is just 4 cooling pads and the fan (there's no wasted or unused space on it). note that the original version of this was slightly taller because i made it for use with a fan rated up to 3000 CFM but decided to stick with one rated 1500-2000max. so i reduced it's size. cost to build is somewhere around 50 to 70 dollars. note that this units' performance is comparable to or better than similar ones being sold for 300-800 bucks! i saw one that was 1500 CFM for over 1000 dollars! - but it had 2 speeds so there you go. btw - the full build instructions are near the end of the video. made with 1/2" PVC, blue cooler pad, 7" radiator fan, small (190gph) water pump (fish tank pump) and some 8" diameter metal tubing. that's about it. most small radiator fans are 80w and water pumps that size are about 20w - so for off-grid operation all you need is one 100w 12v solar panel! another way to run it is just plug in in your cars' cigarette lighter socket. note that you probably don't need a 190 gph pump. anything over 125 or 150 should be strong enough. works great indoors and out. for indoor use vent the unit using cross ventilation - meaning keep a window or two cracked for a flow of fresh air. i'll be making a video shortly on how to make an "indirect" evap. cooler (two stage evap cooler). no venting needed with those. it's essentially this unit combined with a second fan and heat exchanger. if you like the vid. please rate sub and share. quick update: i just posted a video on how to run all of my 12v DC projects using AC power. if interested, here's the link • How to use AC power to...
UPDATE: (05/01/2021) i just posted a video on how to turn this "blue cube" evap. cooler into an "indirect" evap air cooler! indirect units have TWO air streams. one is humid air and one is dry air. only the Dry Air Stream enters your house (so it feels like real AC!). here the link
• DIY "Indirect" Evap Ai...

[@laurice8056]

Your DIY air conditioner designs are Amazing and the Best Ever!! You’re a Genius! This could be a Life Saver for low income seniors, & disabled people who are sweltering in the Summer! Thanks again for sharing 🙏

[@ernstlubbe9181]

This design makes the most sense ! Good job.

[@SingerGuy59]

I live in arid Utah and have two boys in youth football. Their games are back-to-back, which means sitting in the hot sun with only a pop-up shade for 3-4 hours each Saturday. I had already made a Homer bucket design, but it didn't move enough air. I'm going to strip the pump and fan from ole' Homer and make one of these instead. I'm sure this will be a much better design and should make my kids games much more enjoyable.

[@pamelajackson6937]

Thank you again for sharing these amazing designs, ideas, creation, invention, and gifts. I always look forward to seeing the next creations. You are a genius when it comes to alternative energy ideas for the person with limited resources. 👍🏽👍🏻👍🏽😊

[@desertsun02]

hi there. that's very nice of you to say. thanks for the comment.

[@MoPoppins]

AMEN! Because there are only so many hours in the day, I unsubbed the other channels that post similar content because this one, in my opinion, is the best. Thank you, desertsun02. 👍

[@georgeins.c.494]

Great design, thanks for sharing with us.

[@johnm2482]

Looking forward to the next video... The resort I work at uses chilled water to cool over 700 rooms. Great idea to create an exchange to hook up to the swamp cooler.

[@MightySquirrel724]

Agreed. I'd like to see this.

[@wadebrewer7212]

Me too. I live in too humid of an area for this to be effective like where he is, but would still be interesting to see nonetheless. I would imagine you would lose some of the efficiency. Hmmm...what if you doubled up. Used the output from this unit along WITH a heat exchanger. The water is colder than the existing air...means that water could still absorb heat energy.

[@pupystl]

Man you made a very well made video, this is a great looking swamp cooler, good job!!

[@desertsun02]

hi there and thanks 👍🙂

[@theotheraccount2734]

That small tub of water lasted 8 hrs....wow.I have a free small swamp cooler that barely gave me 4 degrees off the temp when I started it at 7am before the heat when it was still only 90...I bougjt most of this stuff to make a 12 gallon tote with a box fan version that seemed bulky an more unstable.This is great.

[@evanriddle1614]

We live in a humid climate. You know by now cool water can dehumidify. That's a tall order. Ice? Not practical. But I do know this: if you can get dry air to a swamp cooler it will work in muggy coastal climates. Love this and thank you for all your work.

[@ronmiller7916]

Have your air run across desiccant in a tray for a large surface area.

[@evanriddle1614]

@@ronmiller7916 Yes that's the idea. But desiccant gets wet too so we have all these complicated engineering attempts to dry the desiccant on the fly using solar heat or propane or whatever. But I think it can be agreed that dry air sent through a swamp cooler is cooler air. Now just to make it work constantly! Thanks

[@paulternlund7751]

Ingenious practical system!

[@aswingsharif6729]

This is like..almost year ago, and still interesting. Subscribed!

[@45acpP90]

Very cool inovation. Thanks.

[@johnnygalt5867]

you house must be freezing!! nice work. thanks for posting

[@shawnsmith6225]

Great design! Looking to build this for Burning Man this year to replace my old bucket swamp cooler

[@desertsun02]

awesome!

[@RandomAccountHolder]

You might want to put furnace filters in a cube around the evap pads then.

[@MrAuxximenes]

Playa Ready

[@alfredabbey6162]

That's awesome, you could make a smaller one for camping, use solar power to charge batteries in the day to keep it going at night. That's what I would call glamping:)

[@DB_Golfer]

Man these designs are legit!

[@Guy-ky9mc]

Nice! Thanks for sharing. I'm going to build one for my shop/garage and maybe a smaller one for tent camping with the family

[@desertsun02]

Very cool!

[@hankmoody5514]

This is beautiful dude. F'in beautiful. I'll have to modify some stuff, but a solid cheap as balls design.

[@charlesmasey6815]

swamp coolers work best in low humidity areas. try setting the system in the shade then blowing the cool air into that room. remembering that you can hook a return air flow to the intake of the cooler making it even colder.

[@Tsiri09]

Looks amazing!

[@Zionsol777]

good design. one tip for you, give it some shade, that will really help it.

[@alexheng8850]

6:15 full build

[@volador2828]

Nice design... I build one and get similar numbers! I used a honda crv radiator fan. I put the frame in a 55 gallon plastic drum and added auto waterer. Works on solar... Currently on second build out of 4!

[@mtndew010572]

Question on the radiator fan did you just bypass the 200-+180 thermostat switch

[@gzubeck3]

Damn the sound full cool ahead! :>)

[@louismullen7282]

I just wanted to say thank you... with covid 19 I've been living in my truck with my 4 four dogs... spent the winter restoring a 50 yr old aluminum camper shell... but the summers in northern California are hot as hell... tried so many different stupid cooler amd they all sucked.... but then I came across your system and watch most of your makes and I just so happen to put solar onto of my shell... it's been a 107 to 111° so far... send pics of all when finished... thank you again for sharing your vids.... most appropriated.... look forward to more of your DIY builds... take care... Be safe... Sincerely Louis M....

[@desertsun02]

hi there. this evap cooler is one of my best (strongest). if you've got the right humidity levels it really cranks out the cold air. based on the temps you listed (107 to 111) you almost certainly have low humidity. sending a pic of your project would be great. i love seeing the builds. best place to send it would be my email that is listed on the 'about' page of my YT channel.

[@Tlacuachechango8]

Great job!!!

[@no-sk1ij]

Nice job mate.

[@desertsun02]

Thanks

[@stricklybiz1]

I need the plans for this for an apartment> will there be any videos on this > this is great> I remember my sister in law had a swamp cooler in Midland and it was 120 degrees outside but her house was a cool 65 degree we didn't go out much only to turn the ribs and immediately come back in lol! I love the way you are experimenting a researching > question: Will you have to deal with mildew, cleaning and dirt accumulation in the filters?

[@R1D9M8B4]

This person knows how to make a video. LOL shows results first! now that I am hooked, I am interested in how I can replicate this.

[@drallcome100]

I must say I enjoy your videos. Keep up the good work!

[@badrinair]

thank you sir for your time and effort. There definitely is a solution

[@desertsun02]

You are welcome ✔

[@tedtolentino4955]

You've a wonderful inventive mind. Thank you for sharing your build; very clear explanations and the materials you used. How practical was it to use the 4-side unit indoors, knowing that you were using solar power to operate it; meaning, did you have any wiring problems to use solar power for an indoor cooling unit such as yours? Would it be practical to use a 12-volt lead-acid battery to operate the unit, instead of solar? and using the solar panel to recharge the battery? For over a year I have been contemplating building a cooling unit, much larger though, using fans that I have salvaged from the HVAC units I have replaced over the years in my home, to cool my garage/shop during our typically hot weather in the summers (Oklahoma). I'm looking for design ideas, perhaps to duplicate the currently available commercial units, which are quite expensive. I had one idea to use the cabinet from an old projection TV (50 inches or larger) as the basic housing for a unit. Your use of PVC pipes has given me more options for such a design. Again, thanks for sharing your ideas and build.

[@bettystover4137]

Since we are working on the same idea of hooking up the cooler to an AC inverter, I have purchased an ac/dc converter for the hookup of the radiator fan, but I’m not an electrician and having trouble getting the radiator fan hooked up right and working. I have searched all over, but there is nothing about how to connect or not connect the blue and black DC wires on the radiator fan to the ac/dc converters red and black DC wires. I have only read about the black wires usually representing Neutral or non-hot wires and red being positive hot wires. The blue with the red could be a danger. I don’t want to blow anything up or hurt myself. Any suggestions from anyone who has been doing similar experiments to get the DC radiator fan working with AC power without the need to hook it up directly to a solar battery?

[@Dave_Williamson]

So far, you have put together the best video on evaporative coolers that I’ve seen - kudos to you! I’ve been looking into finding a good fan, but in order to get 15 to 2000 ft.³/min., I need 80 of the 100 W max on the solar panel. I can do that with a 14 inch fan made for a car. My water pump only takes three watts and does 1.5 gal./min. I want the hundred watt solar panel to keep the marine battery charged well to work in the evening for my CPAP machine. They are costing $40-$60. I don’t think there’s a need to spend that much. How the heck are you getting 1500 to 2000 ft.³ per minute with a 7inch fan? That’s phenomenal! Please tell me where you got your fan. I wish I could show you what I am doing. I’ve got a 20” x 30” x 14“ container, 27 gallons. I want to reduce the height of the set up because I’m planning on using it inside. If I suck the air as you do, I can’t put I heard on it because of the prohibitive height. If I blew through the four sides and into the container with an output cut out of the top of it, would blowing it cause water to spray? So far I’m thinking the best design will be to make my frame 14 x 18 x 30 (using 28 inch evaporative Duracool media). That will give me plenty of room to put my 7“ fan next to this in the lid. If I fill up the container to within 3“ of the top, that causes my exposed media to be 14” x 18” x 19“ at the least to 14” x 18” x 28“ at the most. That gives me 1216” to 1792” or 8.4 ft.² to 12.4 ft.² of functional media...! IF I planned on adding the top section to also be media, that would add another 252 inches or 1.75 ft.². One thing that concerns me is that the package for the pump says 12 L per minute or 3.17 gallons/minute. My pump is 240 L per hour or 4 L per minute. I trust that’s a typo! Know if all this works out right I’m concerned that it may end up causing too much moisture in the air. I don’t live in Arizona, but Northern California. During the time I would use it, the outside humidity is between 80 and 30%. Do you have any idea at what temperature/humidity you could start running this without having concern there would be too much moisture in the air? Also, I’m very interested in checking out your two-stage cooler. Please send me a link to what you’ve put together for that. Thanks for taking the time to read this and I sure hope you will respond. I’ll give you five stars in the best feedback possible, no doubt! If you’re up for it, leave a comment and I’ll get back with you with my phone number and we can talk. Thanks again so much!

[@AG-ri7xx]

there is above his link to show the parts for the fan and plugs and other . kzbin.info/www/bejne/fXK3lqaBf8p_g68

[@michaelhatchett3881]

live in death valley getting burned up man could u make a series on desert friendly and low humid areas like so! appreciate the video!!

[@Mr.Grumbdy]

Great video. I live in Tucson Az . Will this work during monsoon season with heat exchanger inside while evap is outside .

[@garyjohnson4657]

I wanted to drill holes 50ft deep, and put a pipe, within a larger pipe in the holes. The smaller inner pipe would lead to a small radiator. The system would be sealed and pumping fluid through it would use little energy. A 12 volt pump, and a fan connected to the radiator would run off a si glen pv panel. When the sun came up the cooling would be automatic. Several on the sunnyside of the house should be quite effective.

[@crappymeal]

Middle area could double up as a refrigerator, also insulate the tub at the bottom to hold in the coolness

[@justgivemethetruth]

This is brilliant.

[@desertsun02]

thanks (i like to say that the real brilliance is nature itself - and the evaporative cooling effect)

[@justgivemethetruth]

@@desertsun02 History seems quite clear about it, all humanity's brilliance stems from perceptions of what is going on in nature. ;-)

[@edwardchance2543]

Thanks for the great video

[@desertsun02]

You bet 👍😎

[@notwrkn2mch]

Nice job..... I'm in Arizona with the dry humidity . I made the 20" box fan in a tub one last weeks and it worked pretty good. When i get a chance i'm going to try your 4 sided version as it seems it would do better. We super cool with ac in the house then shut the ac down from 3 to 8pm during peak electric. This would be a big help.... we get 115 to 118 degrees in the summer quite often

[@MoPoppins]

Joe Z - Holy crap, that’s hot. Good to know you’ll be staying cool as resourcefully as possible.

[@Goodthingstocome]

Does it work in 115 degrees without your AC on? What temp does your room get to?

[@alfredabbey6162]

Lived in Phoenix in 2006, we had 127 degrees one day.

[@notwrkn2mch]

@@alfredabbey6162 118 is about the hottest so far for us..... takes your breath away.127 is like a bug under a magnifying glass LOL

[@notwrkn2mch]

@@Goodthingstocome This is a small unit and i like to stand in front of it while doing things..... A 9x12 room in this heat would drop 20 degrees if i was lucky..... Can't beat regular air conditioning

[@shelleynobleart]

Very clever.

[@44xxggaaj]

Excellent !

[@nathanshockley9519]

Please add links for where you purchased the fan and pump, the rest can be bought at a hardware store. I want to build one for my shop, it was 118 degrees outside last week.

[@JanithaKarunaratne]

This is such a great design! I'm curious, if the fan direction was reversed (so it's blowing air in to the filter cube), do you expect a drop in efficiency? I ask because I plan on running this in a very dusty environment (burning man), and was thinking about ducting in dry air from the outside through a filter, as that seemed easier than putting an filtering enclosure around the entire filtering cube.

[@desertsun02]

hi there and thanks. this is definitely one of my best designs. the unit won't work if you reverse the fan direction. it has to be set to pull the air through the pads. the pads act like a 'wall' if you blow air at them. i don't think the dust will be an issue at all. these pads actually work very well at filtering the air too. (when they are wet). any dust will just hit the pads and run down into the bucket. my guess is you won't even notice it. have fun out there 🙂

[@WhitentonMike]

I love the simplicity of your design. I have some recommendations based on testing I did last summer. This will require 2 fans. One like you are using and one in the heat exchanger. 1. These require the use of the heat exchanger you mentioned in the video. 2. Add precoolers before the pads. I salvaged a car radiator and ran the pump water through it and exited to wet the pads. This will drop the air temp entering the pads making the tank water cooler. 3. The precooler needs to be mounted on end so the water can enter from the bottom and fill the radiator. 4. This design works best with the pads laying flat with water from above in a grid pattern and the air entering from below. The pads will be stacked between 4 and 6 layers thick. 5. Recycle most of the outlet air (50%-90%) back to the air inlet of the precooler. This will repeatedly cool the air cycling around the system and drive the humidity of that air to around 85%. You can regulate this by adjusting the amount of recycling. The water temp will drop to chilly cold. 6. Right after the fan make an adjustable wastegate. You can use duct tape for experimenting. Also, make the same type of gate for the air inlet just before the precooler. These are necessary for the air recycling to work as expected.

[@supremeelohim1467]

You should post a DIY for it.

[@nathanncohen793]

@@supremeelohim1467 Your username is funny. I like it!

[@justgivemethetruth]

I'd love to see some kind of diagram of your idea. I don't suppose you could draw something and then take a video of the image and post it to youtube?

[@PTJeff9x]

Great concept, I grew up in the desert SW. We had a swamp cooler at our house. Have you tried to source the fans lately? I'm finding only ones that are rated 800 cfm. Will that work effectively?

[@Dave_Williamson]

I’m having the same issue. He’s got a 7 inch fan that moves 1500 ft.³ per minute plus. I really need to get my hands on that kind of fan. Only one that is twice that size moves that kind of air that I’ve found, also 80 watts, one used to cool a radiator for car. If you find something decent, please let me know, will you? Thanks! I’ve got a message in to him, too.

[@nob5000]

Wrap the sides and bottom of the tub in some insulation or see if you can get a cooler that would fit. I bet you could knock a few degrees off the air temp

[@stevefalvo8744]

For these DIY coolers, can you add a couple drops of bleach between cleaning/drying break downs?

[@teresagulley4149]

I am making my parts list for the Direct Evap Cooler. Using the SEAFLO 12VDC 350GPH Electric Marine Bilge Pump, the tubing connection is 5/8. So the PVC connector and the barbed fitting should be 5/8 as well as the vinyl tubing, correct? The video shows 2 diff sizes and lengths of tubing but I only saw you hook up the shorter large diameter tubing. Is the longer length tubing for the "indirect" cooler build.

[@jgreenan89]

Thank you for putting this together, it's awesome that you are getting such cold air. How did you come up with your specs though? If you are recording 20mph (1760 feet per minute) out of an 8inch duct (0.34 square feet), that's 1760ft^2x0.34fpm = 603CFM about a third of the airflow that you are rating your cooler at.

[@desertsun02]

hi. the 20 mph was measured with a basic anemometer. the rating of the fan (1500 cfm max) is per the manufacturer. i did some calculations on it and came up with about 1200 cfm (still under the max but strong airflow).

[@onemangangomg241]

Awesome video... again! Did you glue (solvent) the PVC joints, or did they hold the water without any/very little water leakage? And do you have any videos that walk us through the AC/DC/battery/solar wiring hookups on your projects? Thank you for your guidance.

[@desertsun02]

i didn't use pvc pipe cement (but you could if you wanted to). it's a very low pressure system so it works out good. the frame is well within the tub so any water that leaks just runs down the pipes and back into the tub. yes, i have one or two videos that show in detail how to connect most things to solar panels. most of the projects also show the hookup

[@experimentaenlavan8081]

Evaporador casero muy bueno. Good jod

[@keithrichards4513]

Very Great!! thank you!

[@desertsun02]

Glad you liked it!

[@antonvc]

great stuff! does the water in the reservoir have to be cold to reach the temps in the vid? or its just room temp water? thanks!

[@desertsun02]

hi there. it just uses room temperature water. the water temps drop fast because the evap. cooling effect works on the water as well as the air. 👍

[@cutweldngrind]

OK all my parts arrived and I may start the build and upload this week if possible. Mine will have a solid wall on the front side with fans and switches and the other sides the blue fabric material. I need some PVC and a note book to sketch it up. Its been really humid these past days so I did not have interest in it. I will try a 100w solar panel and if not put 200 watts in solar panels. I may be going over board but looks interesting.

[@Live-Life-Freely]

Where are you? And if you build it record it, upload it and please send me the link. I'm curious to see how others do with it.

[@cutweldngrind]

@@Live-Life-Freely I'm in South Texas and I have all the parts still in the back yard. I have not made time to create my setup.

[@Live-Life-Freely]

@@cutweldngrind Nice now it's just a matter of making it happen.

[@meowmeow5531]

does the pad need to be in the water container? i was hoping to not have to, so that i could turn off the pump, and dry it out using the fan.

[@TheRealWurstCase]

Very nice build! I was wondering if this would still cool the water down under humid outdoor conditions (60% -70% humidity). afaik evaporative coolers can't cool the air anymore if its too humid but does the water still cool down ?

[@lauraknuckles7943]

No, it only works in dry cilmates

[@lauraknuckles7943]

* climates

[@edwinbickel]

Good job! What is the small modification to power it with AC?

[@desertsun02]

hi there. best way to answer this is to give you the link to newly posted video. it shows how to make ALL of my 12v DC projects run on AC power. kzbin.info/www/bejne/fXK3lqaBf8p_g68

[@michealvega1373]

When's the 2stage evap coming man!? I'm anxious lol

[@desertsun02]

hi. since it's been a humid summer here, i put that idea on hold for now and i've gotten sidetracked onto other things. the unit i'm thinking of making is basically this unit with the pipes from my cold water air cooler unit dropped in. picture those two things together and that's basically the video.

[@fuzzy11901]

How well would this work in a fairly humid weather I’m gonna guess not as well..?? Not bashing just asking 👍

[@GerardL]

Did you ever get around to the two stage evap cooler? I could use a design for that right now :)

[@Here_Today_]

This is great, thanks for sharing!

[@desertsun02]

hi there. you're welcome. i hope this project helps a few people stay cool this summer.

[@itsmo7383]

I wonder what would happen if you put a transmission cooler on the other side of that transmission cooler fan and pump the cold water from the bottom through it as well?

[@plantbasedprepper]

What size is the fan? I just turned my swamp cooler from AC to DC to run off my solar system. I used 8" radiator fans because 10" was too big but the smaller ones are louder. Anyway, now I need to make some for the other rooms. Did you go with 8" fans? All our bedrooms are about 120sq ft so I'm going to test this on one room. It's been over a year, do you have any improvements since then? How has it been going for you and anyone else that made these?

[@ashleygomez8252]

can you post links on where you found the pump? also how to wire the fan and pump? looking to put this in a chicken coop.

[@a787fxr]

I guess I am about two years behind you but catching up fast. !:- ) I think I can build a version of this.

[@desertsun02]

hi. don't worry about "being behind". i consider all of my videos to be new (no matter when i posted them). the first video i ever posted (13 years ago) is still new to me. the main reason for that is that they're the 'evergreen' or "timeless" type of videos (meaning the content in them is valid for decades and decades). another reason is because the first time a viewer sees one of my videos it's new to them. i hope that people will be watching, commenting and building my projects even 20 and 30 years from now. feel free to comment and ask questions on any of my vids. i monitor all the comment sections of all of them equally (i see almost every comment)

[@itsmo7383]

if you run it into a reducer like from the 8" to the 6" reducer will the air get colder from the compression?

[@CPeter0912]

I love it!! But whst is the blue expands material? Surely thst is critical.... snd where can you get it? Much appreciated. Thanks.

[@desertsun02]

hi. it's called 'foamed polyester evap cooler pad'. the home stores like home depot and lowes sell it. amazon has it too (but it's usually overpriced on that site). you can get a big sheet of it for about 8 dollars at the home stores

[@CPeter0912]

@@desertsun02 Thank you so much for the informative and incredibly quick reply!! I’ll see if I can source it in the UK. Thanks affine gif your help. Love your films. Peter.

[@javierdomenech4370]

Nice I'm learning I live in Florida here is high humidity could it be used here thanks

[@desertsun02]

hi there. they work best when the humidity is 60% or less. they can work somewhat from 60% to 80% (if the outdoor air temperature is in the right range and it's being used out of doors). but they really struggle if it's over 80%

[@majulenparah]

Would you say the shorter height (minus 6 inches) is optimized to the fan draw? As in that you're not gaining more by having it at 26" or higher, or even wider?

[@desertsun02]

hi. in a word, yes 🙂

[@eduardoquintero7484]

Excelente, like y me suscribo.

[@srambo2875]

I built the short version of this design a few weeks ago. I tried it out at a place that had relative humidity between 17 & 20%. I got about a 15-18 degree drop in temperature. I was stoked. But... the problem was that the 1500 cfm/2250 rpm 7" fan could not put out enough volume of airflow to lower the temps in my trailer. While watching the beginning of this video again just now it appears that the airflow of the fan in the video is much higher than what I was getting in my trail run (my hair definitely didn't move like that). I'm wondering if my fan is a lemon or if I need to experiment with giving the fan more juice (higher voltage). I used the 12VDC system on the trailer to power the fan and pump rather than hook up directly to the solar panel that I bought for this unit. The solar panel would have provided higher voltage. Any advice would be appreciated.

[@desertsun02]

hi. first, it's awesome that you built it and your getting good temp drops! most likely you just need to flip the fan blade. the fans i use are what they call push/pull fans. if the blade is not facing the right way it will run fine but it won't move hardly any air. (the blades are usually very easy to flip. it's usually just a single nut that holds it). i get a 20 mph airflow. if flipping the blade doesn't work, try powering the fan with an independent power source (meaning use one power source for the fan and a separate one for the pump). if that doesn't work then i'd try a new fan. one other thing... this is probably unlikely but it could also be that you have too much water flow down the pads. if water flow is too heavy it might be acting as a barrier. try reducing water flow. (keep at it. this unit should easily cool a trailer when you get that fan cranking)

[@RetroRogersLab]

I'd be interested in the amount of cooling lost with the evap cooler/heat exchanger hybrid.

[@jamesdeanvegas]

I put a block of ice in mine. Works even better

[@ooooooooooooo2240]

Is there a way to add the heron cup theory to the build to just get rid of the water pump.

[@rickkupfer9010]

I bought a 25w pump and was wondering if that will prevent the unit from turning on?

[@davidweather3267]

Great video👌, I live in South Africa, not as hot or dry as Arizona. I live in a home with little insulation so it gets hot inside. I'm just wandering how well this cooler would work at a humidity of 40%?

[@desertsun02]

hi. they work okay up to about 60% RL (but the lower the relative humidity the better). if you are using it outside then they can even work in the 70%-75% range (with the right temps). if the RL is much higher then they tend to struggle.

[@davidweather3267]

@@desertsun02 thank you so much for a quick response😉

[@cliffandrews]

You're having too much fun. Keep it up.

[@MaxAlik]

thanks

[@desertsun02]

Welcome 👍🙂

[@Rabbit.760]

Now what if we created a bong-like design that can pull massive air bubbles thru ice water. First going thru an evap filter to cool the air down. This way warm air won't be hitting the ice water and keeping it cold for longer

[@nob5000]

Hi I am in the process of buying the supplies to make this. I have read that some people prefer the aspen wood fiber pads and also that the corrugated cellulose pads are the most efficient, although more expensive. Have you tried this with other pad types?

[@desertsun02]

hi. i haven't used the other types of pads. i don't use the aspen ones because you can't cut them (so you'd have to design your evap. cooler specifically for a certain size pad). that seems very limiting. about the other type, i may try the corrugated pads in future vids.

[@whatzone7]

Do you still remember where did you get the parts. Like the water pump and the fan thanks

[@desertsun02]

hi there. best place to get the water pump and fan are amazon. any water pump around 200gph should work good. the fan is a 7" 12v 80 watt car radiator fan. amazon has lots of those.🙂

[@jurekwasowski5595]

Thanks for great video. You are a great inventor. Please let me know if I need for solar panel an inverter?

[@desertsun02]

hi there. since the fan and pump are DC powered you don't need an inverter. you can just hook the fan and pump directly to the solar panel.

[@jurekwasowski5595]

Hi friend. But Solar generates Almost 30v more than double required for water pump and central motor.

[@desertsun02]

@JUREK WASOWSKI if it's a 12v solar panel it should output closer to 17v to 18v. that's pretty much perfect for running 12v pumps, fans, lights, etc. (note that most 12v transformers (with 12v power sockets) output anywhere from 14 to 17 volts. the few extra volts is totally fine.) most 12v items will run fine up to 25v or so. if your solar panel has 30v output then it's probably a 24v panel (or something similar)

[@peterdamico1722]

Trying to find a 7" radiator fan that delivers 1500 cfm. Any that I find on Amazon are only about 1/2 that airflow amount. Where did you get yours?

[@desertsun02]

hi i get them on amazon. here's one. www.amazon.com/Universal-Performance-Electric-Radiator-Mounting/dp/B084M2MQFS/ref=sr_1_3?dchild=1&keywords=7+inch+radiator+fan+1500+cfm&qid=1595075007&sr=8-3 or here's a 1000 cfm one (still super strong, should work good too) www.amazon.com/Electric-Radiator-Assembly-Universal-Reversible/dp/B01MZACM2B/ref=pd_sbs_263_7?_encoding=UTF8&pd_rd_i=B01MZACM2B&pd_rd_r=bff28d6b-0a32-40d4-ac33-0b09412db37a&pd_rd_w=uZU58&pd_rd_wg=bcCpW&pf_rd_p=bdc67ba8-ab69-42ee-b8d8-8f5336b36a83&pf_rd_r=Y3WWS4SZH5X349MN7HDM&psc=1&refRID=Y3WWS4SZH5X349MN7HDM

[@jessesasaki3191]

i paid $55 just for the cooling pads and about $30 for the fan. So now i just need the bucket and water pump. the overall price is good.

[@desertsun02]

hi. that's way to high for the pad. they are sold at home depot for 7 to 9 dollars usually. some amazon sellers price them very high i've seen.

[@carlschmiedeke151]

Where did u buy your fan at , it's $100+ at O'Reilly's Auto Parts, & does the cooler work good as he says it does, & yes you got ripped off on the pads

[@johnwells9089]

Put some ice.... Love it !

[@JJ-bs1kp]

I believe the man is trying to harness all 'free' energy, ice doesn't comes free.

[@joergreinicke5945]

Ice wont chanche anything. And freezing water creates a lot of heat.

[@zulhafizmohdhashim2185]

may I want to ask the height, length and width of the pipe you make?

[@bigjon1359]

Well done nice and easy and almost free all day long

[@dadawesome784]

Wondering about the untreated wood on the top near all that moisture. Maybe paint it?

[@desertsun02]

hi. yep i painted it 🙂

[@RandomAccountHolder]

Where are all your Amazon referral links? Great build!

[@gdemeny9]

Exactly. I wish he posted links to all the parts, it would have made it a breeze to build one. :)

[@MrApple187]

12 volt cooler fan PVC pipes and water pump for a fountain

[@enmiredbythelazy4401]

I'd settle for just the fan :) The rest is pretty generic stuff on Amazon and the hardware store. The cooling pads are cheaper at the store.

[@johnsweda2999]

If you had reflective material covering the whole lot and insulated the container and the sponge should go down a lot cooler maybe down to 50 or lower I would have thought Try Covering the whole lot in foil and see what temperature you get

[@Blackw0lff]

There has to be airflow from an outside source of air, to the inside. If you cover it, no air will flow

[@commonsense411]

Made one of these and it's working good but water does not come out of every hole I drilled. Thought it was possibly blocked so checked cleaned and even drilled a little bigger drip hole. still same result. Is it possible that the 70 gph small fountain pump I have is not enough?

[@desertsun02]

hi.that's probably it. i'd use no smaller than maybe 150 gph one.

[@simonac688.]

Can i ask a question ? are you recirculing the same water all the time i dont get it ... at one point the water should become warmer and reach outdoor temp ... i never seen this contraption before ...Btw had to Sub theres brilliancy on this channel 👍👍

[@desertsun02]

hi. yep you are just using the same water in the tub. the water doesn't warm up - it gets colder and colder the more you run it. and it cools it super fast. these units double as water chillers. the reason is that the evap. process is not only cooling the air but it's also cooling the water. example: say you start with 100F water from the garden hose and fill up the tub with that. then turn it on. what happens is every time the water passes down the pad the air rushing through the pad cools the down the water *to the evap air temperature. so in like 10 minutes the entire tub of water goes from 100F down to 70F (in low humidity). the output air temp and the water temp become essentially the same temperature.

[@simonac688.]

@@desertsun02 First i want to thank you for awnsering my question..👍 + i have to try this out ! im a 30 year veteran in the HVAC biz and never seen this before ...+ if i dinth seen it i woudnt of beleived it... its against the laws of Physics 😳 Well goes to show you never stop learning and i thank you again and will certanly be watching your ingenious ways to do things...✌️🇨🇦🐝 amazing

[@desertsun02]

@beez it seems against laws of physics (but it's not). if you read about evap cooling you'll see all the info on how it works (by trapping the heat as 'latent heat' in the air etc.). the one thing a lot of people don't know is that evap. coolers work as awesome water chillers. (because the pad gets evap cooled along with the air. (making the water cold)).

[@simonac688.]

@@desertsun02 thats awsome if i would of known this before i would of made hundreds of them for people in need ...ex: 10-12 years back i got a call in Mid summer from a Nuns retirement place nearly a moratorium and they ask Me to make an estimate to cool off a few floors of there hospital so i did it ended up long story short costing in the $ 100,000.00 range either whith central or wall units it was horondous the Nuns were dying of heat...and very high humidity and lack of ventilation...it was so sad :( i could of saved lives whith this tecknic ....anyway i half to try it out and maybe pass on to Yonger Technicians so they could help Older folks in the furure...👍 I cant thank you enough and if or when i build this thing i will let you know ok and take care please 👍👍🇨🇦🇺🇸

[@johnm2482]

So just a quick question... Do I need to use a charge controller when hooking up the dc devices to the solar panel? Will I cook my pump by hooking it directly to the panel without a controller?

[@desertsun02]

hi. you don't need to use a charge controller. you just hook it directly to the panel. you will not cook the pump. the item just pulls the power that it needs. kind of like you can plug a nightlight or a microwave oven into a socket. each item only draws what it needs.

[@johnm2482]

@@desertsun02 Thanks for the info. I appreciate your creativity and knowledge.

[@sunseeker8460]

If you don't mind me asking, I looked up the fan on Amazon and it says that it draws 12.70 Amps and another one was around 8 or so. Would you mind telling us what the amp on the fan is? Maybe a link to it.. I may have missed it.

[@desertsun02]

hi. it's 6 to 6.5

[@az9094]

Hi. Shouldn't the fan be facing up instead? I made one just like it but the fan facing down blows air in rather than out like the video. :(

[@desertsun02]

hi. i used what is called a push/pull fan. that means you can face it (and run it) either way. you just physically reverse the blade if needed. (it's just a single nut that holds the blade on).

[@c0pyimitati0n]

How does this compare to the cooler versions?

[@picklepee2771]

For those not skilled at wood working a 7" or 7 1/2" hole saw will make a easy circle for you

[@videoadult1]

Why did you have the air flow from fan blowing into the container instead of out when you installed fan?

[@desertsun02]

hi there. i always run them so the air blows out (meaning it pulls the air thru the pad). one cool thing about the fans i use is that they can be installed either way (because it runs either way). the fan i use (and it's blade) are both reversible 🙂

[@nakrul987]

do those blue pads absorb water like a sponge or does the water just run right through them?

[@desertsun02]

hi. actually both. it absorbs it like a sponge and it runs through it at the same time. the material basically acts like a 'loose-knit' sponge. it holds a lot of water but still lets a lot of air through too.

[@gamingquality1110]

Try adding a radiator and ice to see how much it drops