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Advent Air RV Air Conditioner - 15,000 Btu - Ducted or Non-Ducted - Black - R32 - AC Unit Only
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Advent Air

Advent Air RV Air Conditioner - 15,000 Btu - Ducted or Non-Ducted - Black - R32 - AC Unit Only

Part Number: ADV26SR
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$787.25
Retail:$1,100.26
You Save: $313.01
RV Air Conditioners
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Upgrade your RV's AC with this unit from Advent Air for ducted or non-ducted systems. New R32 refrigerant meets 2025 EPA regulations. Not backwards compatible with any AC systems from 2024 and earlier. Great Prices for the best rv air conditioners from Advent Air. Advent Air RV Air Conditioner - 15,000 Btu - Ducted or Non-Ducted - Black - R32 - AC Unit Only part number ADV26SR can be ordered online at etrailer.com or call 1-800-940-8924 for expert service.
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  • Reviews (1021)
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  • Videos (2)
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Advent Air RV Air Conditioners - ADV26SR

  • AC Unit Only
  • 15000 Btu
  • Ducted
  • Non-Ducted
  • Cool Only
  • Black
  • Advent Air
  • Single Zone
  • Rooftop
  • Standard Height

Upgrade your RV's AC with this unit from Advent Air for ducted or non-ducted systems. New R32 refrigerant meets 2025 EPA regulations. Not backwards compatible with any AC systems from 2024 and earlier.


Features:

  • Air conditioner quickly and efficiently cools the interior of your RV or camper
    • Replaces, upgrades, or adds an air conditioner
    • Compatible with a non-ducted or ducted system
    • Not compatible with Penguin, Fogatti, or Furrion
  • 6-Blade fan with motor provides sufficient airflow
  • Thick, collapsible gasket with foam pads provides support between the roof and AC
    • Gasket seals the opening to prevent water seepage and air leaks
    • Foam pads help reduce noise
  • Black, hard plastic cover protects internal components from water and debris
    • Can easily be removed for maintenance and cleaning
  • Bolt-on installation - mounting hardware not included
    • Includes wiring harness
  • UL and cUL certified


Specs:

  • Application: motorhomes, travel trailers, and fifth wheels
    • Not approved for school buses, food trucks, enclosed/utility trailers, or off-roading vehicles
  • Fits: roofs 2-1/2" to 5" thick
    • Opening size: 14-1/4" long x 14-1/4" wide
  • Air conditioner power draw (while running): 15 amps
  • Compressor power draw (while running): 12.4 amps
  • Fan motor power draw (while running): 2.6 amps
  • Capacity: 15,000 Btu per hour
  • Electrical rating: 115V, 60Hz
  • Air flow: 500 cubic feet/minute
  • Overall dimensions: 31-3/16" long x 24-7/8" wide x 12-13/16" tall
  • Refrigerant: R32, 16.9 oz
  • Wire gauge: 12 AWG
  • Air conditioner weight: 68 lbs
  • 2-Year limited warranty


Notes:

  • This unit is not compatible with any AC systems using R410a refrigerant.
  • New R32 refrigerant meets 2025 EPA regulations.
  • This unit is not compatible with any Dometic Duo Therm RV AC systems.

Simple Installation

Because your RV is likely already prepped and pre-wired for an AC unit, installation is simple. Most AC units are designed to fit an opening that measures 14-1/4" x 14-1/4". Depending on your roof setup, you may need to do minimal alterations. If the opening is larger than 14-3/8" x 14-3/8", you will need to install spacers between the sides of the unit and the opening's edges. If the opening is smaller than 14-1/8" x 14-1/8", you will need to enlarge the hole to fit the unit snugly inside the opening.


Advent Air AC Collapsible Gasket and Foam Pads

On the bottom of the AC, there's a thick, collapsible gasket with 6 noise-reducing foam pads. This provides support between the RV roof and AC and seals the opening to prevent water and outside air from leaking in. Because of this, the use of fresh sealant isn't needed. Once installed, the hard plastic cover on the AC can easily be removed for maintenance and cleaning.


In order to fully complete installation, this AC needs to be paired with a 2025 or newer Advent Air air distribution box and thermostat.


Additional Accessories

Additional accessories can be purchased separately to improve the performance of your Advent Air AC unit. The start capacitor (ACMSCKIT) improves the performance of your AC by using stored energy to jumpstart it. And the electric heat strip (ADV34QR) removes the chill on cold or frosty mornings in your RV, ensuring you stay comfortable. Please note that the heat strip will only work on Advent Air AC units.


Advent Air Warranty Coverage

2-Year limited warranty covers defective units when installed correctly on approved applications. The warranty does not cover units installed incorrectly. To ensure air conditioner is installed correctly, please see the questionnaire pdf below. A filled-out questionnaire is required for warranty coverage.


If you are not comfortable using a voltmeter (or removing the charge from the start capacitor), you'll want to make a service appointment with your local RV dealer to verify the installation. Print the pdfs below (warranty- questionnaire, warranty dealer information) and take them along with the RV to your local dealer. ASA does compensate dealers for warranty work as outlined in the dealer information pdf. You may be charged by the dealer for time spent investigating the installation.


Warranty - Questionnaire  AA Questionnaire

Warranty - 2-Year Card  AA 2-Year Card

Warranty - Dealer Information  AA dealer info



ACR150B Advent Air RV Rooftop Air Conditioner - 15,000 Btu - Ducted or Non-Ducted - Black - R32





Video of Advent Air RV Air Conditioner - 15,000 Btu - Ducted or Non-Ducted - Black - R32 - AC Unit Only
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Videos are provided as a guide only. Refer to manufacturer installation instructions and specs for complete information.




Video Transcript for Review of Advent Air RV Air Conditioners - 15000 BTU Black RV Air Conditioner - ADV26SR

Hi, everybody. Andy here with etrailer.com. Let's take a quick look together at this Advent Air 15,000 BTU black RV air conditioner. Now, this is gonna be a great option for you to consider if you're looking to replace, or upgrade, or even add an air conditioner to your RV. This 15,000 BTU per hour air conditioner is going to quickly and efficiently cool down the inside of your large fifth wheel, Class A motorhome, or toy hauler. And this does use the more energy efficient R32 refrigerant, which meets the 2025 EPA regulations.

So this air conditioner is going to be compatible with ductless or ducted systems, but this is not going to be compatible with Penguin, Fogatti, or Furrion. And so this is just gonna be for the air conditioner unit itself. To fully complete the installation, this will need to be paired with a 2025 or newer Advent Air air distribution box and thermostat. So this will not be backwards compatible with any AC systems from 2024 or earlier because of that new R32 refrigerant. Your air distribution box and your thermostat will all have to be compatible with that new R32 refrigerant.

So if you're looking for the air distribution box and thermostat that's going to be the best fit for your camper or RV, you can find those options here at etrailer.com. If you need any help, don't hesitate to give us a call, 'cause we do wanna make sure that you're getting exactly what you want and need. So this is designed for motorhomes, travel trailers, and fifth wheels. But I do wanna point out that this has not been approved for use in school buses, food trucks, or enclosed utility trailers, or off-road vehicles because typically the roofs of those types of vehicles are not built with the support needed to handle the weight of an air conditioner system, or there might be too much flex in the roof that could potentially damage the air conditioner unit while you're going down the road. This will be a bolt-on installation, but typically the bolts are gonna be included with the air distribution box that you choose or the one that you already have that will be compatible with the R32 refrigerant.

So this is going to fit roofs from 2 1/2 inches to five inches thick with that standard roof opening size of 14 1/4 inches long by 14 1/4 inches wide. Looking at some measurements here, the overall length from end to end, we're sitting really close to 31 3/16 inches long. The overall width, about 24 7/8 inches wide. The overall height, about 12 13/16 inches tall. The unit itself weighs a little under 70 pounds.

So this AC features a six-blade fan with motor that's going to give you sufficient airflow. The airflow's gonna be right at 500 cubic feet per minute. And this black, hard plastic cover is gonna do a great job of protecting those internal components from water and debris. And as you probably saw, we do have these Phillip head screws. So these are gonna be able to be easily loosened and removed. If you ever need to take the cover off to clean it out or anything like that, then they'll be able to be easily replaced and tightened when you're ready to put that cover back on. But overall, I think it's gonna do a pretty good job of protecting everything. And of course, it's black, so it's gonna match with virtually anything. And I don't know if you're gonna be able to see, but we do have these foam pads here at the bottom that are going to support and cushion this air conditioner on the roof of your RV. So you got those thick foam pads between the base of the AC and the top of your roof. The pan here is metal, and the gasket, this does have a gasket that's going to fit over your roof opening there that's collapsible. So you're not gonna need any sealant or anything because of that gasket. And I wanted to reach in here real quick and give you a view of the wiring harness there, so you see that. Now, additional accessories can be purchased separately to improve the performance of this AC unit. For instance, you could pick up a start capacitor that's going to improve the performance of your AC by using stored energy to jumpstart it. And you also could pick up an electric heat strip that's gonna help remove the chill on those cold or frosty mornings in your RV. The heat strip is not meant to be a furnace replacement, but as you probably know, it's just there on those, really, those crisp mornings that you don't really need to turn the furnace on, but you just wanna get the chill out of the air. That's what the heat strip's for. So if you're interested in the start capacitor or the heat strip, you can find those options separately on the related product section on this product page, and you can pick those up separately and add it to your order if you so desire. We do also carry this same unit in a 13,500 BTU option or with a white cover, whether it's a 15K or the 13,5K, 13,500 BTU in the white cover as well. So whether it's black or white, or depending on the BTU rating you're looking for, we'll have you covered. I think that's gonna wrap up our look today. I do hope that our time together was helpful for you. Again, my name is Andy. Thank you for joining me.

Customer Satisfaction Score:

Ratings & Reviews

4.5

1021 reviews
5 Stars
(763)
4 Stars
(122)
3 Stars
(48)
2 Stars
(24)
1 Star
(64)
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by:
The units work as they should but the best part of everything was dealing with NikkiR in customer service she is amazing, very on point and relatable she was inquisitive about our situation and very helpful, absolutely stand behind Etrailer have made multiple purchases with them and the customer service with Nikki was by far the best I have ever had
by:
At 34.5 at the vent best a/c I have owned…. Only problem was the plug seemed like a male end and needed female end. No problem took the old one off domestic and worked great!
by:
Initially this was great. Well considering I had no A/C before, I think I would have loved anything. However, with the air conditioning set at 74, the air conditioning will sit at 80. We aren’t even in the hot days of summer and August and I’m scared. Another HUGE ISSUE I have, is the noise. I literally have to scream to speak to people in the same room, and then it shuts off and you now have to adjust your ears, the volume in the tv, the music, your voice. It couldn’t be more annoying. I’d like to add I have thermal and insulated. curtains on all windows. I plan to contact Etrailer to see if there is anything that can be done, since this purchase is recent.
Kate F. profile picture
Etrailer Expert

Kate F.

1/28/2026

Thanks so much for sharing your experience, and we’re really sorry for the frustration you’re dealing with Rebecca. We know how important a quiet, effective A/C is, especially heading into warmer months. A 15K unit should absolutely be able to cool better than what you’re seeing, so this sounds like something we’d want to dig into. In some cases, airflow issues like a loose or misaligned ceiling assembly or duct divider can cause both higher noise levels and poor cooling performance, even in well-insulated rigs. We handle a lot of troubleshooting, but Advent prefers to handle their own. I am going to send you a separate email with the information to Advent so you can give them a call. Just tell them Kate from etrailer sent you, they will make sure you get taken care of.

by:
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by:
2021 Jayco Precept Prestige Motorhome
The part has been great. Easy to Install. I may have missed it in the write up but it wasn't a direct fit as it needed a 9 pin to 6 pin adapter harness for my RV. Fortunately, my mobile mechanic had one in his truck so we didn't have to make on. I believe etrailer sells it for around $50.
by:
2013 Forest River Grey Wolf Travel Trailer
This was a direct replacement for my 2013 Dometic AC unit right down to the 6 pin plug and the mounting bolts. It hooked up to the existing control unit without issue and runs all speeds.
by:
As of 5/24/26 @ 15:00 hrs central time the Advent ACM135B is installed and fully operational, cooling the bedroom of my rv perfectly.
Product arrived in excellent condition with no defects. Installation was as expected. Did rent a material lift from Home Depot which made the trip to the roof much easier and safe for this old man of 75yrs.
Thank you for the ease of ordering and your contact to let me know status of my order.
Mike L. profile picture
Etrailer Expert

Mike L.

5/26/2026

You're very welcome William, I'm delighted we could help!!!

by:
First one made it in quick but I was slightly disappointed when my electrician wired it in and the fan motor didn't work. That disappointment faded as soon as I called customer support. Not only were they polite and helpful, they shipped the replacement before receiving my return which meant I didn't have a gaping hole in my roof to keep covered long. New one works perfectly. Couldn't be happier with the customer service I received. Will definitely be a returning customer.
by:
2021 Palomino Backpack Truck Camper
Just got back from Las Vegas, NV air conditioner ran amazing. No issues, just nice and cold to freezing in my palomino backpack camper! Temperature outside was about 102-106 this weekend, September 11th 2026.
by:
2018 Dutchmen Coleman Lantern Travel Trailer
You all did great...the price for everything was affordable and I liked the free shipping. This AC unit blows the cooler air a lot better than the original one.
by:
If you really have NO experience with rooftop units, maybe you should go with a complete kit (including the control box/thermostat). If you have "some idea" of what you are doing, you can figure it out. This unit comes with a six pin plug that feeds the fan and compressor. Nothing more. Not even a wiring schematic. Not a big deal if you know how to connect things up. But if you don't, yea, go for the whole kit. We installed this on a 2005 31' Jamboree motorhome. I had to clip the connector off and connect it the old fashioned way (head scratchin' and wire nuts). I also used the control box original to our RV (more connector cutting, etc.). Still, it took only a couple hours to install. It looks great, works great, and (the most important part) the wife is happy. Our old, original unit still worked but was pulling about 27 amps - way too high. I think the power problems we had at an RV park a year ago (very low voltage) killed the compressor (low voltage = lots more heat). This one is pulling about 13 amps. Oh, you really should get some help getting it to the roof. I don't have any friends so I did it myself (sucked!). But it can be done. Just be really careful, take your time, think it through, and stretch those muscles before you get under it. Hopefully, you have a friend or two who can help. Ok. I'm off to take a nap in the cool air.
by:
As I stated after my last purchase of a Advent AC. The six pin plug at the end of the umbilical cord does not engage with existing control boxes force a rewire of the cord using the old 6 pin connector. I'm thinking of using another brand and distributor in the future
by:
This is my fourth Advent unit I have purchased recently. The units themselves function well and customers are very happy but, on every unit, the six pin connector would not fully engage with the existing control box. Could not adjust the pins in the connector so is was forced to rewire unit using the old unit harness. I am considering going in another direction in the future.
by:
2012 Coachmen Mirada Motorhome
Works good install, and didn’t notice that it was bent where the compressor and the fan motor mounts to the base plate had to Try straightening it the best I could the fan would not turn at all once I straighten it out better it is working
by:
2019 Ford Transit Connect
Well I already told you the unit was damaged in transit, I did repair it by myself, it was dented in next to the compressor area, subframe metal was dented, plus the units wiring harness was identical to the receiver end of the existing on the rv wiring box, in other words, the prongs weren't received into each other, since they were the same, so even tho I may have ruined my warranty by cutting the end off the unit and wire nutting the old one in its place,but it works, could just fine, the old unit was 19 years old, everything is still the same on the unit, it was light weight, and cools just fine
by:
Volkswagen R32
Easy to install but need a new thermostat setup to be compatible with r32 freon
David profile picture

David

8/12/2026

It still works great one year later and definitely happy I got this one

Jameson C. profile picture
Etrailer Expert

Jameson C.

8/12/2026

@David That's great to hear!
by:
2000 NuWa Hitchhiker Discovery Fifth Wheel
Very fast shipping have not hook unit up looking forward to it.Very well built unit and good value Thank You
by:
It installed in the same place as the old Colman and installed fairly easy. However the “direct” replacement as advertised is not entirely true. The air delivery box will not work. The control and thermostat will not work so I ordered more parts from here and I’m still waiting on it to arrive to see if I wasted my $800 or not. So far not real good feeling about it.
by:
2014 Coachmen Catalina Travel Trailer
A/C worked well. Hopefully it will outlast the Coleman A/Cs (2) that only lasted 6 years each. I was able to install it and have it up and running the same day it was delivered. Thanks Much!
by:
Needed a male connector off of the air conditioner was a female connector of the air conditioner had to swap off old air conditioner
by:
Works great, direct replacement.
by:
Bought an Advent for a direct replacement for my living room a/c last year. Bedroom a/c went out this year. Have had great success with the replacement from last year. Easy plug and play installation.
by:
2018 Chevrolet Equinox
The unit was supposed to be plug and play compatible with the dometic controller. That is why the 4 star review. The plug had female pins instead of male pins. Other than that the unit performed as expected.
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See what our Experts say about this Advent Air RV Air Conditioners

  • Best Replacement AC for a Dometic Brisk II
    Hey Brice, thanks for all of the information. I have a solution but I am sorry to say but there isn't going to be a direct fit replacement for your Dometic Brisk II. There's two reasons for that. The first is in 2025 all RV AC systems had to change over to a new coolant called R32. This was a EPA mandated decision. Part of this upgrade means that nothing made with the R32 coolant in it, like item # ADV26SR you were looking at, fits any system made before 2025 that has the older R410A coolant....
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  • Replacement AC Unit for a 2017 Grand Design Reflection 303 RLS
    Hey Johnnie. The Advent Air RV Air Conditioner item # ADV26SR will indeed work in your 2017 Grand Design Reflection 303 RLS but you'll also need the compatible air distribution box. This AC unit has the new R32 refrigerant which are not compatible with the old R410A units. Plus their parts are being phased out. The Advent Air RV Air Conditioner System - Manual - 15,000 Btu - Black - R32 item # ADV42SR has the item # ADV26SR AC unit, along with an air distribution box, and start capacitor....
    view full answer...
  • Do You Have a Ducted Replacement AC Unit for a 2021 Forest River?
    Hey Dylan. I have a solution but I am sorry to say but there isn't going to be a direct fit replacement. There's two reasons for that. The first is in 2025 all RV AC systems had to change over to a new coolant called R32. This was a EPA mandated decision. Part of this upgrade means that nothing made with the R32 coolant in it, like item # ADV26SR you were looking at, fits any system made before 2025 that has the older R410A coolant. R32 is more efficient but none of the new components...
    view full answer...
  • Replacement AC System For a 2014 Sunnybrook Raven 5th Wheel
    Hey David. AC replacements don't come as an easy process these days. There was a recent mandate that required all new AC units to start using the R32 refrigerant. Because of that change, older components are not compatible with the newer AC's. The only AC systems I have that would prevent any sort of ceiling work would be the Velit 2000U Under-Bench AC systems. They come in a 12V part # VE56QV, 24V part # VE36QV, and a 48V part # VE96QV. These are more geared for camper vans or smaller...
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  • Can Advent Air RV AC Unit Replace Dometic Mach 8
    Hey Alan, there isn't a way to have the Advent Air # ADV26SR fit the air box you have now from your Mach 8 if that is what you are asking about. Nothing we offer can do that but if you were wanting to completely replace what you have including the air box the # ADV62SR would be great if you have a ducted setup or the part # ADV42SR if there are no ceiling ducts.
    view full answer...

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Info for this part was:

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