Carrier Gas Package Heat Exchanger Replacement Start To Finish

#Check Description For Links. I show how I replace the heat exchanger in a gas rooftop unit that has a cracked heat exchanger and where to look for these silent killers and fire hazards. The rebuild includes the heat exchanger, draft motor, ignitor, flame sensor and burners for a complete restoration of an old heating and cooling rooftop unit.
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[@HVACRSurvival]

Here is a simple but important safety item that needs checked and maintained. Thanks for watching and commenting EVEN THE 2 OR 3 NEGATIVES I GET ON EVERY VIDEO🤣😂😁👍👍THEY ALL HELP BUILD THE CHANNEL. THANKS AGAIN!

[@jrrains]

Have you ever seen a new heat exchanger smoke heavily for hours?

[@HVACRSurvival]

@@jrrains no, never.

[@HVACRSurvival]

@@jrrains I run the heat with the blower off for a couple minutes plus what I already said in the video to prevent that. But never hours,

[@marlon8429]

These are by far the easiest package unit heat exchangers to replace.

[@HVACRSurvival]

There definitely easier than most but they also don't seam to last as long as several other brands.

[@philipwall1025]

No doubht

[@jrrains]

@@HVACRSurvival have you ever had a new heat exchanger spew the burn off smoke for hours? I had a install yesterday and it wouldn't stop with the white smoke.

[@HVACRSurvival]

@@jrrains no I haven't, I have stopped the fan and let it get hot so that it speeds up the burn off, but not too the point that the metal got red hot.

[@jacobcolby1423]

I’ve had that drill for a year now, no issues yet been pretty happy with it.

[@HVACRSurvival]

I love it but not happy about the trigger. The dealer said that's the only problem he's had to repair. 🤷‍♂️ I'll deal with it for in trade for all the cool tools Milwaukee makes, specially in the 12v.

[@borshardsd]

Good share good tech and a good human. We need more like you and you're good motivation in my book man! Next time I'm grumpy on the job, I'll think of you.

[@HVACRSurvival]

Thanks So Much!

[@grindstone5368]

Nice video👍 Haven't had any issues with our Milwaukee's but I'm an anti impact guy hardly ever use them.

[@HVACRSurvival]

I rapid cycle my trigger a lot to make sure I don't over tighten the screws and strip them out. That's likely what's killing it. But my Bosch never had an issue. Go figure🤦‍♂️ thanks for taking the time to watch and comment.👍👍

[@actechformallyyomama746]

Good job on that repair. Those Carrier heat exchangers are good for 6 or 7 years. I have a location that they use them for dehumidifying. They started failing after 5 years. Sweet hook there. I use an old cradle mount. Bent one end open the other in a hook fashion. Works quite well. Everyone asks where I got it and I point to an exhaust fan lol. Stay safe.

[@douro20]

I've heard it's the 90+ AFUE ones which tend to go out in short order in residential units. They just can't seem to make good ones. My Payne 70K furnace from 1996 is still going with its original heat exchanger. Only issue I've had is that it seems to be finicky about an even slightly dirty flame probe; I'm always having to clean it one or twice a season, even after having the burners cleaned and the gas pressure adjusted.

[@hrdworkin7633]

Excellent video! Thanks

[@HVACRSurvival]

I appreciate ya watching Retread 👍👍

[@jphvac5725]

Good video man! Replaced tons of those carrier heat exchangers. Don’t mind that job at all.

[@HVACRSurvival]

I just did another one today. Yes they are pretty easy. It's such a simple task that I figured the only ones that might be interested in it would be the new rookie or possibly somebody that doesn't have gas heat in their area.

[@xelaju8]

I think there should be a co-relation of hourly wage and outdoor temperature in heating season. The lower the temperature outside the higher the hourly wage. Great video, thank you for sharing.,

[@HVACRSurvival]

I love that thought👍👍

[@hvactechpr7872]

Nice job and find!! I like seeing different equipment being worked on (I live in the tropics btw) but commercial gas dryers have a similar setup!!)

[@HVACRSurvival]

Thanks Alexander, I appreciate you watching it. I couldn't imagine never seen snow.👍👍

[@hvactechpr7872]

@@HVACRSurvival I did live in NYC as a kid but practically grew up here no snow but you get some nights in the high 60's

[@lancerudy9934]

Very nice video carrier are the RTU that are changed the most!

[@HVACRSurvival]

Thanks for checking it out👍👍

[@douro20]

I believe the reason they went to pressure switches is for greater safety; they want to make sure there is actually sufficient airflow in the heat exchanger before igniting the burners, and from a safety standpoint it's better to check actual airflow than to check if the motor itself is running. I think some of them, like the older Evcon furnaces, actually use a centrifugal switch rather than a Hall-effect sensor.

[@HVACRSurvival]

I would agree but they are also a little less reliable vs the hall effect or centrifugal switch in commercial applications.

[@lancerudy9934]

To line things Up , Allen’s head sett works very well!

[@HVACRSurvival]

Good idea👍👍

[@HughesManHVAC]

Those carrier heat exchangers are a nice day. That Hook is nice, need me one of those.

[@HVACRSurvival]

Thanks, you can either build it or buy it. I have a link in one of my tool kits in the description.

[@sknight0391]

As far as winter gloves go, I like the Max Grip gloves at Lowe's. They are usually back in the garden center with all the other gloves. They are blue on the back cloth part & they have a really nice rubber coated palm side with little blue gripping dots. They are extremely functional and leave you with a lot of dexterity, but they're also pretty warm.

[@HVACRSurvival]

I'll check em out, thanks!👍👍

[@crforfreedom7407]

Having spent time in construction I've always been a Dewalt guy, but Milwaukee makes a great box, even better with some tools, though I've noticed the quality of all of these to have declined over the last 30 years or so. Luckily that switch is cheap and a pretty easy fix, especially with your capabilities!

[@HVACRSurvival]

I took it apart and it's all self-contained. It has a 5 year warranty so no worries just an inconvenience to be away from it when I use it every job I'm on.👍👍

[@rookierefrigeration4357]

Good video bro. I enjoyed watching your winter from Texas lol

[@HVACRSurvival]

Dude, that's not right🤣😂👎👎 You can keep the sneaky poisonous snakes. There's no way that I'd want to do this crap down there because of them. Residential would be a definat hell no, ***What about commercial? Do they sneak into town? I couldn't deal with one of them bastards hiding in a panel or under a unit waiting for me to come bopping along?

[@deweyrussell8376]

Great video, if you want to move to Dallas TX I have a job waiting. for you

[@HVACRSurvival]

I would love the weather but I'm stuck in Ohio. Thanks for the support👍👍

[@j.antoniovarela5982]

Try hardy Gloves from Harbor Freight. Inexpensive and great grip. Keeps your fingers warm and the pal is water resistant.

[@HVACRSurvival]

Thanks man👍👍

[@gregmiracle9560]

Nice job! 👍👍

[@oldtimehomestead1554]

Nice job, for sure one of the easier ones to do.

[@HVACRSurvival]

Thanks for watching👍👍

[@CHOMAHOMA]

Thank you for this video. It is helping me with things that I have to keep in mind when replacing a HE. I have to replace one very soon. Waiting until tomorrow to order the parts. Do you remember what is the name of the plates that you said to "order both"? Since sometimes they send them and sometimes they don't. I need to be ready with everything I need because it is cold already and it gets windy in that particular location. I haven't changed a HE on a Carrier before so any help will be highly appreciated. Thank you.

[@HVACRSurvival]

I forget the correct name but its like a restrictor plate. If you look at the suppliers parts list you'll see it.

[@CHOMAHOMA]

@@HVACRSurvival yeah, I went to one of the Carrier supplies distributors and I saw all the parts needed. Thank you.

[@stevepope5484]

Excellent

[@steve19841117]

very nice job thank you Sir

[@HVACRSurvival]

👍👍🤜🤛

[@douro20]

Have you tried a Hitachi impact driver? I wish they still made the hydraulic ones, being that they were the company which basically perfected the technology. Is it typical for the smaller Carrier package units to have that type of condenser in them? It looks suspiciously like a split system condenser.

[@HVACRSurvival]

The smaller RTUs have the small wrap around coil that tucks in side but normally a larger unit has a traditional look to it.

[@Eddy63]

Good vid Rick ...

[@HVACRSurvival]

Thanks Eddie, I appreciate it man.👍👍

[@mekyleavacadogaming7354]

Thank you for sharing your video. I have not yet replace a heat exchanger. I learn from this video and got good tips. What kind of silicone do you recommend to seal that heat exchanger? Do they sell them in UR?

[@HVACRSurvival]

That was red hi temp silicone. You could get away with normal silicone just don't use caulking, that might put off a smell. Something to note, High temp silicone only has an extra 50 degrees of range over normal silicone.

[@mark.r8900]

Great video. Is there a gasket for the flame retainer plate? I see the top pre-installed exhaust regulator has one. But is there a gasket for flame retainer plate? (where flame goes in). Thank you.

[@HVACRSurvival]

I believe I seen it both ways. In reality, I don’t see why you would need it because the draft motor is going to be pulling it into the heat exchanger.

[@richjr8545]

I have tons of Milwaukee tools but I have found the m12 batteries do not like the cold

[@HVACRSurvival]

So far I love them, Except for the trigger, which will be replaced under warranty but that I'll lose it for nearly two weeks. I bought the cordless soldering iron, Dremel tool, air compressor, circular saw, Sawzall And the drill impact combo. To say the least I kind of got all in. Thanks for the feedback. Have a great weekend👍👍

[@CreativeMaintenanceSolutions]

How did you determine they needed to be replaced? I'm having a fame rollout on my carrier unit and was thinking of taking the heat exchanger out to check for cracks. Inducer draft motor is working fine.

[@HVACRSurvival]

Visual inspection is my favorite way.

[@BuckeyeMCS]

Great video! Having ours done today. I'm curious one of my complaints about my unit is that every time the fan starts it sounds like a car laying rubber on the road. "They" say it's just the motor is so strong the fan belt slips. Any way to eliminate that?

[@HVACRSurvival]

Make sure the pulley isn't worn out and it's aligned properly. See if the belts are loose or glazed, see if the temp rise is correct, it might be set too fast?

[@mychoclabwinston]

Nice job,

[@HVACRSurvival]

Thanks bud!

[@RelavantReels]

Thanks for the video, one question when obtaining a combustion analysis would you grab from the exhaust pointing directly in or drill a hole to grab from the side at the exit? Awesome video, thanks so much.

[@HVACRSurvival]

I haven't ran many combustion tests on commercial RTUs,. But from what I have found from testing in different locations of the flue pipe, it hasn't made large changes in my readings as long as your centered in the exhaust path and are within 12" from the draft motor. But remember if you're checking a natural draft heater, to test before the draft hood where it adds room air to aid in the natural drafting process.

[@RelavantReels]

@@HVACRSurvival thanks for the reply and info. I was referring specifically when dealing with these carrier 48 tfe style packaged RTUS as they don't typically give you a grill on the exhaust like trane for example. They just have that silly single bar for bird protection. Hope you have great and safe new year!

[@ottomobili2575]

Hey man, awesome video I have a couple of the carrier 48 series. How long would you say it takes to replacement the heat exchanger in these bad boys? My HVAC guy is trying to charge me 8 hours labor

[@HVACRSurvival]

On site labor can be as little as 2.5 to 3.5 hours, then add the travel time to the job and back to the shop, then add for picking it up and for ordering it and disposing of the old parts. But you also need to add time incase you run into problems such as getting into position and testing the unit. Maybe the RTU needs a full service, like washing out the coils and the blower wheel. All of those things can add up. I would feel safe at 6hrs total but then what do you do for the remaining 2 hours to fill the day? In two hours you can't get a lot done without going into overtime so they might have just rounded it up to 8 hours to make it easy to quote. If this company does a great job and is reliable, you have to decide if the cheaper company will stand behind the repair. When I'm doubt, ask the contractor what all is included with the time billed for. Some contactors price the job higher if they're busy in hopes of not getting the job. Talking it out is the best way to know.

[@lancerudy9934]

Please have more videos like this ,!

[@HVACRSurvival]

What did you like most about it?

[@ore-georgecicovic6533]

Your videos are always on the point and stuff that are not important like adding 100 screws is something that is easy removable from video. Length of your videos are great and so informative. Thank you

[@HVACRSurvival]

I really appreciate your feedback on details that most people generally ignore and don't mention. I try to make him creative yet as educational as possible or I should say informative.

[@sharky5570]

Nice vid, what do you do with all the extra seals they send?

[@HVACRSurvival]

I don't have any use for them. I think we got a bunch at the shop so they probably get thrown away.

[@walkingfreak]

I never have worn gloves unless it's about to be something wildly nasty like prep tables or changing hot loop filters and that's just regular ol rubber gloves. Even when i did ski lift operations for 6-7 years i didn't really wear gloves unless it was -10F or colder and had people always commenting on it.

[@IFIXCASTLES]

These are easy to do after having done about half dozen. One thing... you should remove snow and ice where you were pulling your stuff up to the roof.

[@HVACRSurvival]

I'm heading to do one now at 2 in the afternoon lucky me. On a Friday. They are one of the easiest ones to do when it comes to packaged units.👍👍

[@biglon74]

I have a 48gs-048090300 carrier unit which may have a clogged heater tube or it's bad as I am having flame rollout back to gas orifice on #2 feed. Part # for new heat exchanger??

[@HVACRSurvival]

I don't know part numbers, I call the supplier and tell them the model and serial number. If it's clogged or cracked it's probably rolling back and yeah then you're probably going to need to replace it.

[@sknight0391]

Why did you switch from Bosch. I've always been a 12v Dewalt guy (no problems what so ever). But I recently got a great deal on Bosch #PS41, the old "brushed" impactor. So far I seem to like it, not nearly as much as my Dewalt, but it seems like a nice drill. Did you have problems with your Bosch?

[@HVACRSurvival]

Only reason why I switched from Bosch was because of all the extra tools available for Milwaukee. I loved my Bosch and was probably more reliable.

[@stevepope5484]

Im cheap like these folks too. Plus my unit wasnt used very long. Not sure if i can purchase the heat exchanger. It was barley under warranty but/ manufacturer wouldn't let me have the part. Only if i paid them 1200.00 to change it. I forget which brand mine is.

[@karizmatic5]

I've only known of pressure switches. What's a proximity switch look like?

[@HVACRSurvival]

It's a coil that is on the end of the draft motor, it picks up the magnetic field of the motor spinning.

[@karizmatic5]

@@HVACRSurvival AAAAHHH THANK YOU!

[@funintended461]

Why did you change the burners? More to the point, what would you look for to indicate they should be replaced?

[@HVACRSurvival]

I look for rusty burners, crossovers, anything that could cause a call back. The burners can wear out and burn dirty causing incomplete combustion, etc and since the customer did not replace the whole system like I recommended, I wanted everything to be new in the heat section for worry free operation to the best of my doing. Anything above the minimum repairs needed for safety was quoted as a option so the customer could make the decision and take responsibility for any future problems if they choose not to make the recommended repair. This covers myself against any liability.

[@funintended461]

@@HVACRSurvival thanks for the reply!

[@Ray-wr2wr]

how much usually replacement cost on RTU 4ton ? i have RTU ready for replacement ?

[@HVACRSurvival]

That depends on the brand the difficulty of the job and where you live. I have no idea about prices. I’m a service guy I fix stuff I don’t sell anything.

[@PaytonBrowning]

Do you have more info on the hook you use?

[@HVACRSurvival]

Sorry for the delayed response, sometimes KZbin doesn't notify me of all the messages. The orginal one that I got my idea from was "The one trip hook" I have a link in my tool section in the description. It's in one of the 3 kits.

[@sandeepsekhon6748]

Hey I didn't see the hook and rope on kit.com. where can I find that?

[@HVACRSurvival]

I built that one. If you don't want to make it then search for (One Trip Hook # OTH-1 by Sensible Products) I couldn't find a single pack on Amazon, only a 6 pack and I figured you didn't want 6 lol. You can buy a solid metal round rod and bend it into shape than either weld on the eyelets or bolt them on. Or check at your supply house and buy it for 45-55 bucks.

[@chuckyan6325]

Can you please give the model # of the flame sensor and the spark ignitor?

[@HVACRSurvival]

This was a while ago, I don't have them but your dealer can look them up with the model and serial number.

[@sonycrack1]

1 guy changeout 🤯.... for what we pay to replace a heat exchanger you’d think they had a whole football team up there 🤣

[@HVACRSurvival]

I hear ya 👍👍

[@DavidATakes]

I have two Carrier rooftop units that are about 16 years old, a 5 ton and a 7.5 ton. I have one heat exchanger that needs to be replaced. Service company is saying it might be smarter to buy a whole new unit than throwing good money at this problem. There isn't much to these units. Why buy a whole new unit at this age?

[@HVACRSurvival]

At 16 years old it would depend on what refrigerant it’s using, if it’s using ourR-22, the refrigerants very expensive however it can be converted to an alternative refrigerant like R-407C but will require a oil change, to do it right you need to pull the compressor out and dump the oil and replace it with POE oil. You also have to judge based off of the condition of your evaporator and condenser coil. So it’s not cut and dry and hard to tell without seeing it myself, but they may be right.

[@jamesrothwell1738]

Because they don’t want to deal with the “but it was just working last year and I just spend $12,000 for you to fix x, y, and z!” When the compressor dies at the start of the next cooling season. So they’d rather replace the unit for maybe $18-27.5k and give you another 15 years of heat and AC with minimal complaints and service calls. That way everybody is happy. They get to make some money that day. And you get a good working unit that won’t need ppl coming out for expensive service calls 4x a year.

[@hvachookup]

Do you like your carhartt hoodie

[@HVACRSurvival]

I just purchased it to wear under my company jacket. So far its been great and the waterproofing actually does a good job for the light rains and water hose splashes that happen.

[@philipwall1025]

I've never done anything other then ten tons,maybe 7.5.It the exact same design. CARRIER needs to improve the extension for the drft that attaches 2 the outside door,I haven't seen that new ignitor with the metal backing,or psi controls, the ones I worked use and end sitch off drft.It usually is a red ,white,and blk wire with a plug that attaches to the integrated furnace control board.

[@HVACRSurvival]

I agree, they are lacking behind in design but they can't make them condensing furnaces when they are used in northern climates like I'm located. So the efficiently won't change much and the over all design is likely cheap to manufacture, so that might be the trade off between cheap and better. 🤷‍♂️ Hard to say.

[@morristim1]

Pull that rusty plug and check the manifold pressure already! Maybe it just got left on the editing room floor...

[@philipwall1025]

I've done ,I cant even tell you how many of those.The most annoying part is ordering them from carrier. I need everything for the heat exchanger,I'm replacing the heat exchanger. I NEED EVERYTHING IN THE HEAT EXCHANGER, EVERYTHING THAT HAS TO DO WITH THE HEAT EXCHANGER I NEED.EVERYTHING,EVERYTHING,IF A GASKET IS SEPERATE I NEED IT,IF A PLATE IS SEPERATE INEED IT,EVERYTHING!That how it's ordering them,and its every manufacturer, lennox,york,carrier it seems like all of them will have a plate,a bag of gaskets,something that's not part of the heat exchanger, BUT IS. It can be really annoying, If im doing a hx,everything that's part of it gets replaced, alot of times drft mtr if the cage is smoked.I always replace all the screws with fresh new screws,ill re use that one weird long screw.Those roll outs are infamous for going bad,I usually replace them too.Usually I pull the jumper that someone put between w1 and w2 so it runs high heat all the time.There infamousforrusted out seams,the carrier rtu that I worked on ran on 407c 2,ran hotter then R22.300 lb head on a 95 degree day.I had those hx to a science ,a helper and i could knock them out dam quick.I never disliked that design, carrier used it for like 20 yrs,going back to the weathermakers,and they were simple to work on.Even there clo boards that monitored amp draw comingfrom the compressor was self explanatory. Those units were alright to work on.GREAT JOB!AWESOME VIDEO!

[@HVACRSurvival]

Thank you for the compliment 👍👍I appreciate the feedback!

[@joevinski1]

My gloves are my callouses lol no bitch mittens for me lol

[@johnt7502]

Did six in one day once. Two guys and a million screws. Looong day. Lol.

[@Nateone626]

John T dude I bet! I’ve done 4 this week but not in one day! What a warrior lol

[@HVACRSurvival]

That would suck, I think 3 is the most in one day for me.

[@gene-khvacr]

👍🤙

[@abazism]

Why don’t they those plates for us

[@HVACRSurvival]

That would make sense,I agree👍👍

[@notanewbie1718]

👍👍👍👍👏👏👏👏

[@HVACRSurvival]

🤜🤛👍👍

[@steveblake8766]

#63 Thumbs up

[@misterdude206]

Cant do the jersey gloves. Very floppy and no grip. I'd rather use nitrile gloves on cold days. And maybe some normal working gloves over those.

[@HVACRSurvival]

I hear you. There really isn't a glove that fits my hands very well. I've got some nice Klein gloves but they really aren't that warm. And most importantly I can't manipulate screws with them on.

[@anthonygonzalez7488]

06:21 / The Stars and Stripes, Old Glory, etc . Don't disparage the great symbol of our nation by calling it, " the old ragged flag " .

[@HVACRSurvival]

I'm absolutely not, It makes me mad they don't respect it enough to maintain it, I feel once it gets ripped or looks worn, it should be swapped out and sent to the VFW for disposal. But the saying comes from a old hymn called "The old ragged cross". If that saying was good enough for Jesus, it should be good enough for our flag. No disrespect was meant.

[@anthonygonzalez7488]

@@HVACRSurvival Thank you. I agree. Maybe you could send them a letter. Many organizations can retire their old flag and provide them with a replacement : )

[@HVACRSurvival]

@@anthonygonzalez7488 I will mention something to my contact person when I get back to that location.

[@bigosama1424]

i cant work on ac with them gloves everytime u grab sum u grabbing the glove if not ace hardware fitted gloves i use my hand

[@HVACRSurvival]

I have a hard time finding gloves that actually fit my hand properly, I think my thumb is always shorter than it should be and has about a quarter to half an inch of extra at the end🤣

[@ArcolaBridge]

How do you know what exchanger you need? There's a bunch of part numbers. I got a 48tcea05a2a5a0a0a0 and a need a new exchanger but can't figure which to get.

[@HVACRSurvival]

I give the model number to the distributor and they tell us.

[@ArcolaBridge]

@@HVACRSurvival looks like I found it using Google and the crackhead exchanger has been superseded with a model number ending in 10

[@xraybravo7180]

Awesome video