Boost Your RV Air Conditioner Performance With This Cheap, Easy Fix! 

Purchased: August 2023 - still works GREAT!I ru-vid.comUgkxxsUnXhGsSJLim_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!

Great video. Suggestion, when you put the foil tape in, put the section of tape that is further into the plenum first. Then the second piece over laps. This will prevent the constant air from blowing against the seam and eventually leaking. Like a roof shingle or sidding, you start from low and go high.

We bought a new wildwood tt and had this same issue, there was a 1/4 inch piece of foam dividing the two half but it was crinkled and just flowing air between the two. Not only that but the passage to the ducts weren't taped or sealed so the air was blowing into the ceiling instead of the duct work. We were having issues with very low air flow so it wasn't cooling it down. Instead of taking it to the dealer, I pulled the ceiling cover off and discovered the problem. I put a thicker barrier between the two halves, and sealed all the gaps and holes and made the bends more aerodynamic and what a difference!! Went from very poor ac to ice cold. I went over the whole duct system and cleaned up the edges, and put caps after the end ducts so eliminate air leakage. Took a couple hours but it was a night and day difference. I used material I had on hand from other projects so the cost was 0. Thank you for this video!

Thanks for the wake up call. We had new A/C units installed last year, and haven't been overjoyed with the performance. I took a quick look just now, and sure enough! The divider was flopped over on one and misaligned on the other... Thanks!

Unbelievable what I found. Thank you so much. Our air vents blow way better. Divider piece installed backwards, huge holes blowing into basically the attic, and tape hanging down blocking half of our vent. Never would've checked this. Thank you.

Saw this a year or so ago and vowed to check mine as my brand new RV AC sucked. He was spot on and now it blows cold as ice. Gonna buy you a beer for that great advice.

Thanks Darren, we were camping last week in Alamogordo, NM and a fellow Grand Design Imagine owner told me about this easy mod and said it was one of the best he'd ever done to improve efficiency. Glad to find this video and will be looking at my Coleman very soon! Nicely done.

Excellent! I've been in the HVAC trade for over 45 years and these are the BEST suggestions a RV owner could ever do to his air conditioner. Great job!

*Great product **Fastly.Cool** so far*

Thanks for making this video. I have the exact Coleman AC as in the video and it had exactly the same issue. I fixed it following your video and what a difference. I have cold air coming out of both RV side ducks now when it was only on one side before the fix. It is even quieter in the RV now because the blower outlet noise now not being directed through the air intake as before. We when camping last weekend in 99°F heat and the AC wasn't even close to keeping up. It will be fun to see the difference the next time it is that hot when we're camping. Overall, very happy! Thanks again.

Just recently watched this video, after subscribing to your channel, and checked my A/C. Lo and behold, the divider was out of position by and inch and a half. Removed the plenum, repositioned the divider, added some foil tape, and now I can tell that the A/C is definitely more efficient. Thanks for the very informative video. Being a full time RVer, I can use all the help I can get!

I did the same exact thing to both of my air conditioners, I sealed up everything with the silver tape, most of my cold air was going back into the return, and inside the attic space, they both work so much better now.

I did this to our RV AC’s a couple of years ago. Worth the time and cost for sure. Also plugged up the dead end gaps at the ends of each duct line

Your video is very good. I'll be checking my RV A/C units and hoping to improve their performance. Great job!!!

Have you notice that the quality of the work done in manufacturing RV's has decreased? I have had so many friends who bought new RV's and there were Major manufacturing mistakes. This is good for the RV service industry but shows me so many manufactures do not care about the quality of their products, just quarterly profits. Love your videos. They help me keep my RV running 100%

Wow thank you so much! We had problems with our coil freezing up. I resealed the gaps we had on our AC unit with aluminum duct tape, and fixed our freezing up problem. Great work thanks again!!

I just installed a new A/c unit. I think I have it done pretty well, but just to be sure I'll be taking it apart tomorrow with foil tape in hand just to be sure! Thanks for the video, very informative and well done!

Thanks for this valuable information. My Winnebago Vista 29 had a problem with air not going through the vents to the rear of the coach. I followed your video and it took 20 minutes to fix this problem.

we just bought a used starcraft trailer...AC seems to work pretty good but I might check anyways...thx for a great video !!

Wow, thank you. I’m going into my RV to check my A/C right now. What a great video!!

Thanks for the video. This is number one on my to to list to make my RV work.

I covered my divider with window reflectix on both sides and folded one piece at bottom as I had inch gap at bottom of divider, secured with ac duct tape. Works tons better! Reflecix did my side gaps too. Thanks for share!

Wow, I 'm going to take a look at my a/c up in Michigan. Thank you so much!

Great air con tip. We are brand new to Rving. Green as green can be, but very handy. Thank you Tim and Mary

Great video. A very easy fix to get a little more out of your RV A/C. I love it!

Can't wait to get in my rv and check this out! My A/C seems just "ok". Just found your channel and really enjoy it so far.

Great vid! Although, we haven't experienced any AC issues, I'm def going to check out our unit before we take it out again in another week.

Your video is spot on. I took apart our 26HE Coleman air conditioner, because it didn’t seem as cool as other motorhomes we’ve owned. After removing the inside decorative cover I quickly found out why the A/C unit did such a poor job of cooling. The divider that separates the warm-air intake side of the plenum from the cold-air output side was installed backwards and was laying at almost 45 degrees. In our case there was virtually no separation of airflow between the warm & cold sides. I removed and reinstalled the plenum divider correctly, then I put everything back together. The difference in cooling was unbelievable. Like night and day. I only wish I had seen your video sooner. We put up with the poor cooling last summer, but assumed it was because there was only one air conditioner and that’s all we could expect. We never suspected that it was a sloppy installation by Winnebago that caused the problem.

Thank you for this great video. I’m going right now to my RV to see if mine is okay

Excellent information I bought foil tape for my art projects now I have a true purpose for it. thanks for sharing

"Absorber"= Evaporator. Good video, eye opener!!

That's awesome I was wondering how to fix that .now I'm going to check it out thanks you

Great video! I'm bout to tackle mine today,. And also get on top and clean the coils and junk , So thanks and I am DEFINATLY going to tape up in and around where any air leaks could be ,,, Keep us informed and keep making those videos!

Thank goodness I found this video! I bought an older tt and the divider and roof plenum (?) are missing. I haven't been able to get anyone to show me what it's supposed to look like and how it's set up so I could fix it. The unit works amazingly, in spite of missing these parts. Now I know exactly what I have to do to make it work perfectly - it'll probably freeze me out, haha. Many, many thanks for making this video!!

Fantastic Information!! I'll be checking on correct system configuration ASAP. Thank you!

My trailer has a Domestic Brisk II AC with poor air flow and sure enough that divider fell over and putting it back upright had it really pushing air again thank you!!!!!

I just bought a new class C, the single AC on a 29' isnt cold enough on 90° days. Looks like I'm going to do some disassembling this weekend. Thanks for the info.

Ahh brings back memories of my last RV. Coleman 274BH had a 13,500 AC. Back half cooled well, front, not so well, so was going to replace it with a 15K unit. In my perusal of the unit to determine everything I would need to swap it out, discovered that the opening to the front duct was partially blocked by what ever was used to "seal" the duct to the plenum. I cut it away, turned on the AC and debris blew out the front vent! Needless to say, did not need to replace the AC, it kept the temp great from that moment on. Now I have a new trailer, a long 5th wheel with two 15K AC's and they struggle to cool it down and keep it cool even with partial shade, so guess what is next on my list. ^^^^^ Exactly what is in this video. It is great information and it does work when the ducts are properly sealed(or open as in my last one).

Awesome video! I am a new RV owner, however I am on the opposite far corner of the country from you (East Central Florida)! So glad to have found your channel, and I have instantly subscribed! Thank you for sharing your knowledge and experience!

I just the other day improved air flow through my Dometic refrigerator with your air duct hack, now talk about deja vu all over again, another air flow hack only this time A/C! Pleasure-Way clearly did a better install job than a lot of RVs, but I still got 7 degrees improvement just from adding a little duct and tape. Now I have to go check my A/C! Thanks!

Love your videos! I got rid of my original traditional RV air conditioners and installed Midea house window ac which I installed in the living room, entertainment cabinet and will run on 500 watts and I can use my solar panels on the roof to run both AC 's without using a soft start. I also installed compartment doors that swing open and I use drawer slides for the air conditioners to sit on a sliding platform and I can slide the unit in and out easily and of course open and close the compartment door. I could not be happier and the Midea AC unit is less than 400 on Amazon. I installed a Frigidaire 400 watt AC in the bedroom clothes cabinet. Love it. I also have more room on the roof for solar panels and walking space. I got rid of all the 14x14 roof vents when I put a new roof on and then put square Led ceiling lights to cover the inside vent holes. I use the AC's on fan mode or open windows instead of using the traditional roof vents. I also use Alexa to turn off and on the lights and the AC units and all my stuff. So I now have a smart RV. By the way if you purchase a Echo Dot 5 you don't have to use the wake word of Alexa, you can use The Wake Word ECHO... Echo turn on the tv.

Awesome info!!!!! Surprised there isn’t more channels out there for detailed RV repair. Great job

Word of the day "Airodynamic ". Great video, like usual. Do it to your ac, makes huge improvement. Thanks

great video... I am going to do exactly this to my AC.... thanks...

The system itself is most likely adequately designed. The problem lies in the quality of the workmanship (or lack thereof) in the installation! - out of sight, out of mind! Thanks for bringing this to attention. It doesn't take much effort to increase the efficiency of your a/c unit!

Thank you for sharing this info and making this video, keep up the good work...maybe I'll search you out next time I visit my family in Oak Harbor and do lunch...

Very nice presentation. Thank you!

This is one of the best videos I have seen. Having encountered this issue with a Thor Ace several years ago, I also encountered a issue with the return path from the filters. Sometimes the spacing between the filters and the ceiling is not enough to permit correct airflow from the cabin to the intake plenum. I have seen this where effective input is virtually cut in half. It's amazing when you clean the filters to find each side half full of dust and the remainder is still clean. You have to make sure the intake has sufficient clearance to use the entire filter on both sides.

Your advice worked so well. Plus my AC runs much quieter.

Very good video. My rv air conditioning system had that divided but I discovered that it was moving with the pressure of the cold exhaust cold air. I made repairs with ac tape and solved the problem

Thx for ALWAYS keeping the videos easy to understand TC from Avery in MN

Also some people who are living in these could put a Mister where it will blow a slight spray into that condensing coil make sure you use a calcium filter ,because the compressor works better when they’re not overworked when it’s 110 out

Great review. I checked mine last year and didn't have the large issue you showed. Did find small leaks where they didn't quite get the tape coverage. We all should inspect.

Best advice yet. Thanks.

Great advice, thank you! I'm gonna check mine today

Love all your video's I've watched so far thank you so much owner of a 44 ft fifth toy hauler thanks again keep up the good work

We have the same unit and I think this is why ours literally sucks in rainwater when it rains. Coleman told us the only way water could get where it's getting is if there was a mixing of the warm and cold air pathways. I'll find out this weekend when I get it out of storage.

Great training video. Thank you!

DAMN I CANT WAIT TO CHECK MINE OUT NOW & get into it!

Thank you for sharing this video.

Subscribed, thank you for sharing this! Something so simple can cause an efficiency.

Great video thank you for sharing

Very helpful video, thank you!!

Did that to my Montana last summer and it made a huge difference.

Thanks for the information I have 3 / 15000 BTU AC units in my toy hauler and the one in the main living area is up in a loft area it doesn't seem very efficient I will have to check it out.

Thanks for the video. Adding this to my list of projects :)

Awesome informational video, thank you for posting!

nice work Darren!

Great video. Thank you.

Great information. I can't wait to see what the duct work looks like inside my RV air conditioners.

Project # one for tomorrow morning. Mine is a Dometic but I assume it will be similar. Thank You!

This is Great Advice.Thank you!

Great information. Can’t wait to check my AC looks.

Really good advice, Thanks for sharing.

Thank you so much. I've been struggling with the AC in the main living room of my 5th wheel. Takes forever to cool down and the air is weak flowing at the duct vents. Can't wait to pull it apart and check it out. This makes complete sense and has to be the main issue with that unit.

Good information, thanks for the AC tips.

Thanks. Well done and logical.

It is good information I’ve been an AC business for over 20 years and he is correct about what he saying

Very good video Darren

Great video. You gave me some thoughts on how to fix mine.

We have been in our rv for 4 months now after 1 yr of renovation and are not happy with how cheap everything and I mean everything is in these rvs. What you pay for from dealers they should be doing these things. But they are not in business to help but to make money. Thankfully their are people like you for help.

Hello from Canada 🇨🇦. Once again Darren great informative video YOUR THE BEST

Those gaps between the divider were huge! Thanks for the simple fix to repair it! #MRVWI

A great help for a newbie to camping in a trailer.

Great video! This is the 2nd time I watched this. I'm on my 2nd 5th wheel in 2 years and both RVs seemed to be put together by Darrell and his other brother Darrell. This increases cooling ability by 50%... Thanks again. There seems to be 197 shareholders in the RV Manufacturers Board.

Had to do the same. Same Coleman unit. Also pull each outlet from the roof and tape the gap between the roof and duct....those had poor tape job and the attic space was getting air.

thanks for the tips. I'll check mine.

Great video thank you for the tip!

I think ours is like that (same style) have to remember to go check it tomorrow. Today though we did the DM 2652 fridge 120v heating element…. ✅

Thanks! Great video 🇺🇸

Great video! Thanks.

Thanks for sharing this was a great video

I'm able to keep the temperature 30-32 degrees cooler inside my RV. I installed 2 misting nozzles at the condenser in order to cool the air entering the unit. This combined with some strategically placed mylar (windows and roof vents) works like a charm! 110 outside....78 inside..

Gonna be checking Mine.... good stuff Man!

thanks for a great video!! I really appreciate all the details

Super helpful, best video I have seen!

Chilling !!!!! Excellent

Can you make a video on the whisper quiet ducted a/c unit as it is all ducted.

Great info thanks very much for this I am having an issue with mine now not flowing very well to the front but still is good to the rear about to dig in and find out what is going on. But now I have a great starting point.

Thank you for a great video.