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Advent Air RV Air Conditioner - 13,500 Btu - Black

Advent Air RV Air Conditioner - 13,500 Btu - Black

Item # ACM135B
Our Price: $601.09
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Product Expert Kathleen M

Is this right for you? Product Expert Kathleen M says:

Yes, if you:

  • Are replacing an Advent or Dometic AC unit
  • Have a dark RV exterior and prefer a black AC on the roof to match
  • Have a ducted RV or one that is partitioned off - higher CFMs will push air throughout the rig

No, if you:

  • Are adding an AC where one didn't exist before
  • Go boondocking frequently and need a capacitor to make it easier on your generator
  • Camp in humid or super hot areas that require more cooling power (Btus) to stay comfortable, especially with pets or kids
This AC unit lets you replace an existing AC or add a new AC to your RV or camper. It works with your existing Advent Air, Dometic, Coleman Mach, or Carrier air distribution box and thermostat - adapter wiring kit (sold separately) may be required. Great Prices for the best rv air conditioners from Advent Air. Advent Air RV Air Conditioner - 13,500 Btu - Black part number ACM135B can be ordered online at or call 1-800-940-8924 for expert service.
  • All Info
  • Reviews (558)
  • Q & A (0)
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  • Why etrailer?

Advent Air RV Air Conditioners - ACM135B

  • A/C Unit Only
  • Advent Air
  • Dometic
  • 13500 Btu
  • Cool Only
  • Advent Air
  • Black
  • Ducted
  • Ductless

This AC unit lets you replace an existing AC or add a new AC to your RV or camper. It works with your existing Advent Air, Dometic, Coleman Mach, or Carrier air distribution box and thermostat - adapter wiring kit (sold separately) may be required.


  • Air conditioner quickly and efficiently cools the interior of your RV or camper
    • Replaces, upgrades, or adds an air conditioner
    • Compatible with a ductless or ducted system
    • Can be paired with an Advent Air or Dometic setup
    • Can be paired with a Coleman Mach or Carrier setup using a wiring adapter (ACCOLKIT, ACCARKIT - sold separately)
  • 6-Blade fan with motor provides sufficient airflow
  • Thick, collapsible gasket with 6 foam pads provide support between RV roof and air conditioner
    • 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
    • Includes wiring harness
    • Mounting hardware not included
  • Additional accessories (sold separately) can be purchased to improve performance and comfort
    • Start capacitor (ACMSCKIT) jumpstarts the AC when a campsite or generator doesn't provide enough power
    • Electric heat strip (ACMHD) removes the chill on cold or frosty mornings
  • UL and cUL certified


  • Application: Motor homes, 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): 9.9 amps
  • Fan motor power draw (while running): 2.6 amps
  • Capacity: 13,500 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: R410a, 16.9 oz
  • Wire gauge: 12 AWG
  • Air conditioner weight: 68 lbs
  • 2-Year warranty

This Advent Air AC unit lets you replace an old or broken air conditioner on your RV or camper. It works with your existing Advent Air or Dometic air distribution box, and it is compatible with Coleman Mach or Carrier setups if used with an adapter wiring kit (ACCOLKIT, ACCARKIT - sold separately). The AC has a powerful fan and motor that provides a steady stream of air to efficiently cool the inside of your RV on a hot or muggy day. And everything you need in order to replace or add an AC unit is included, which makes installation simple and easy.

Simple Installation

Because your RV is likely already prepped and pre-wired for an AC unit, installation is simple and easy. Most AC units, including this one, 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.

And in order to fully complete installation, this AC needs to be paired with your existing Advent Air, Dometic, Coleman Mach, or Carrier air distribution box and thermostat. Please note that an adapter wiring kit (sold separately) is needed if you are replacing a Coleman Mach or Carrier air conditioner.

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 (ACMHD) 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 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), youll 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 - Dealer information  AA dealer info

ACM135B Advent Air RV Roof Air Conditioner - 13,500 Btu - Black

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Customer Satisfaction Score:

Customer Reviews

Advent Air RV Air Conditioner - 13,500 Btu - Black - ACM135B

Average Customer Rating:  4.5 out of 5 stars   (558 Customer Reviews)

This AC unit lets you replace an existing AC or add a new AC to your RV or camper. It works with your existing Advent Air, Dometic, Coleman Mach, or Carrier air distribution box and thermostat - adapter wiring kit (sold separately) may be required.


After an incident with a tree branch, our factory ac (coleman) needed to be replaced. I went with the Advent over the coleman for price and reviews, and it works great. I have never replaced an AC unit before, but a couple of youtube videos and about 45 minutes of work and we were back in business.


When the outside temperature increases, the body of the unit causes the fan squirrel cage fan to make contact with the base of the unit making a very annoying rub noise that is very audible. Changed out the squirrel cage to a new piece and still has the same issue. Otherwise, the A/C unit works great.

Sorry you are having this issue, as that is definitely not something we like to hear. It looks like customer service has reached out to resolve the issue. Sorry again that this happened and please let us know if anything else comes up!
-- Etrailer Expert Andrew N - 10/12/2022


Installation was pretty simple and straightforward. The unit cools exceptionally well (freezes out the bedroom in our fifth wheel!). ONLY concern was the the packaging was pretty minimal, and the steel tray base of the unit was pretty banged up upon arrival. I was afraid the unit might have suffered internal damage, but after straightening some dents and bends in the base tray, it installed tight to the roof and fired right up. I WOULD strongly recommend to etrailer that they consider over-boxing the original packaging, to prevent this kind of damage in shipping -- these units are just about at the outside limit of what a UPS/FedEx delivery driver can handle alone, and based on the condition of the box (and the bend in the middle of the base-tray), I strongly suspect the unit must have hit the ground fairly hard coming off the delivery truck.
OVERALL, very satisfied with the product.


This product was NOT run tested before shipping. The squirrel cage fan in the unit was sticking on the foam housing and almost burned out the motor before I detected the problem and re-aligned the motor mount to stop this from happening.
This is NOT the way to go.
To say that I am P.Oed is understatement.
Also as I had the foam housing off I noticed that the aluminum fins on the radiator had some minor damage.
Altogether some poor and sloppy workmanship

Would NOT recommend your company again.

I can certainly understand your disappointment in the AC unit. This is not how expect the AC unit to arrive. I will have our customer service team reach out to you.
-- Etrailer Expert Jenny N - 07/25/2022


It is a very good unit. I works really well. Was very simple to install and get it running. Will recommend that anyone buying this also buy the Starter kit ACMSCKIT to. it will make it so much easier on the unit and will help with the surge every time the kicks on.


Super fast shipping, great price, very helpful staff. Installation was super easy. Replaced one of my original 1998 Duo Therm units with this unit. Getting the old unit unstuck was a bit of a challenge but from there it was just a matter of getting it lined up with the hole, attaching the cold control, putting the 4 bolts in, plugging it into the original connector, putting the plastic cover plate back on and turning it on! From experience I know that even the simplest of projects on an rv can snowball into a major ordeal. Without a doubt this was one of the easiest and most straightforward projects I’ve tackled. Working in 95° Oklahoma heat start to finish was under two hours and that included replacing the old foil sealing tape around the air duct. Having two strong people on top while I was inside to get it centered over the hole, getting the old unit down and the new unit up was a huge asset! I’ll be replacing the other unit sometime over the winter for sure. Just can’t think of anything negative about the whole experience.


Works great. Had some issues with shipping. It was damaged but the folks at etrailer took care of my needs very quickly and made it right


Perfect replacement for my old dometic. Extremely easy plug and play design. Had old one off and new one installed and running in 15 minutes....


Five stars so far. I just received this and installed it over the weekend at our permanent campsite. I was replacing the stock Dometic A/C unit which would no longer cool. Installation (aside from getting up on to the roof) was dead simple. This unit is quieter than the original and cooled the inside of our trailer in no time at all. The last unit ran for six years. Time will tell how this one lasts.


It was a perfect replacement fit. Watched a couple of [online] videos and changed in a couple of hours. Cools great, quiet. etrailer worked hard to find the capacitor for the unit and got everything quicker than I expected.


Very easy to install. A real DIY installation. Just removed the old one, put in the new one. Only 1 wire to plug up & attach the thermostat wire. Blows very cold & is quieter than my original that came with the camper.


Excellent replacement as per information on website
Extremely easy 1-2-3 installation

Great...perfect replacement
Marlin - 05/03/2022


This Air Conditioner will work perfect for my enclosed race trailer. The item got shipped and delivered as promised.


Good communication! Received unit as p lanned!


E trailer always the deal and nice people to deal thanks this is not the last time to buy parts


Excellent service by etrailer and all personnel involved. Received order two days after placing and in great shape. Installed and working fine. Thank you for your great service again.


ETrailers Staff is one of the Best Ive Dealt with. Top of the Shelf in customer Service!


Great products and super fast services and delivery! Very happy with e trailer!


works fine


No comments


easy to install, runs great


Worked as designed to.


Once I had all the correct parts (bad on me). The AC has been working great. With the weather here in south west NM (hot) it has been a life saver thanks again for all of your help


Perfect for bedroom
great to order all
items together


We are very happy with the Roof top air conditioner we purchased for our RV. Thank you Tommy for advising us to get the start capacitor also. It was a great recommendation. Installation was a breeze. Having the extra AC has been great keeping us cool on these really hot almost 100 degree summer days. Thank you e-trailer.

Show More Reviews

See what our Experts say about this Advent Air RV Air Conditioners

  • Recommended Replacement for Advent AC135 Air Conditioner
    The 13,500 Btu Advent Air RV Air Conditioner, # ACM135 for a white cover or # ACM135B for black cover, will be a direct replacement for your current unit. You can even step up to the 15,000 Btu rated model, # ACM150 if you prefer. # ACM150B for black cover. This will be a remove and replace of the AC unit on the top of your RV, same wiring, thermostat, and air distribution system will continue to be used as is.
    view full answer...
  • Non-Ducted Air Conditioner for Food Trailer
    The Advent Air Rooftop RV Air Conditioner # ACM135B is actually just the outside part of the AC unit and wouldn't be considered either ducted or non-ducted but you're on the right track! What you need along with Air Conditioner # ACM135B - which is Black in color but also available in White at part # ACM135 - is Ceiling Vent Assembly # ACDB to give you a non-ducted AC unit. The vent assembly will install in a 14-1/4" long x 14-1/4" wide opening in your roof and will be inside your food...
    view full answer...
  • How to Determine if Advent Air Conditioner Will Fit Trailer
    It is highly likely that you can use the Advent AC where the vent is now on your car trailer, though we do not have any specific blueprints or diagrams or any way to know the size of your trailer's vent opening. In order to use the Advent Air Rooftop RV Air Conditioner # ACM135 (White) or # ACM135B (Black) you would need the Ceiling Vent Assembly # ACDB and these will fit a roof opening of 14-1/4" long x 14-1/4" wide, which is the standard size opening for trailer vents so it is very likely...
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  • Replacement Blower Motor for Coleman Mach 15 Air Conditioner
    While we do have some great air conditioner options for you, we unfortunately do not sell replacement blowers for any air conditioner models we carry. With that being said, the best option would be to reach out to Coleman to see if they carry the exact replacement you need. However, if you conclude that you need the unit replaced, a great cost-effective option is the Advent Air RV Air Conditioner # ACM135 (white) or # ACM135B (black). This model comes with 13,500 BTUs and has a 14-1/4"...
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  • Recommended Replacement for Duo Therm Air Conditioner
    That is a possbile issue on why your breaker is being tripped. I do suggest that you also verify that the breaker itself does not need to be replaced. If it is a weakened break, you may be compounding the issue. And yes, to your other question, the Advent Air RV Air Conditioner part # ACM135 and # ACM135B are designed to be a direct replacement for the Dometic units. This will be a great option, and my recommendation for replacement providing you have an in good working order air distribution...
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  • Replacement A/C For A 2006 Carriage Cameo With A Carrier A/C
    For your old Carrier A/C you can use either the: -Advent Air RV Air Conditioner # ACM135 for white, or, -The Advent Air RV Air Conditioner # ACM135B for black. You're going to also need the Carrier Adapter Wiring Kit for Advent Air RV Air Conditioners # ACCARKIT to be able to use your existing Carrier ceiling vent and thermostat. I did some research on your older Carrier unit, and it appears that you have a 13,500Btu heating capacity, ducted unit, that has the cool only option, no...
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  • How Does Advent Air Rooftop RV Air Conditioner # ACM135B Drain Condensation
    I spoke with my contact at Advent Air regarding the Rooftop RV Air Conditioner # ACM135B that you referenced and she did say that this unit features a port that will drain any condensation. It is designed to simply drip onto the roof and then drain off the side of the camper. If you wanted to make up some plastic tubing to attach to the port to more directly control the drainage you certainly could but it is not necessary.
    view full answer...
  • Does Advent AC Unit # ACM135B Come with Refrigerant Installed Already
    Yes, the Advent Air Conditioner unit part # ACM135B that you referenced comes with R410A refrigerant already installed.
    view full answer...
  • AC Unit Recommendation for Cargo Trailer Without Roof Ducting
    For that we have the Advent Air RV Air Conditioner w/ Air Distribution Box, Start Capacitor, and Heat Strip # ACM135B which would work perfectly. It comes with a distribution vent for your non-ducted application as well as a thermostat and a heat strip for when it's cold as well.
    view full answer...
  • How Thin Can A Roof Be To Install The Advent RV Air Conditioner
    A roof can be as thin as 2-1/4" and as thick as 5" to install the Advent RV Air Conditioner # ACM135B.
    view full answer...
  • Can the Advent Air RV Air Conditioner Be Recharged
    The Advent Air RV Air Conditioner part # ACM135B like most RV air conditioners are sealed so they cannot be recharged aka there is no service port. That said, the unit has a two year warranty so if there are any issues within this time frame you will be covered. We don't offer any rechargeable RV air conditioners at this time.
    view full answer...
  • White Advent Air Rooftop RV Air Conditioner Unit Recommendation Plus Install Kit
    The white version of the Advent Air Rooftop AC Unit part # ACM153B is the part # ACM135. To install this you'll also need the thermostat and vent kit part # AT15021 and you'd be set!
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  • Replacement for Dometic Duo Therm 13,500 Btu Air Conditioner
    The Advent Air Conditioner you mentioned will be a replacement for your Dometic Duo Therm 13,500 Btu AC, and it is available in either black or white. - Black: Advent Air RV Air Conditioner - 13,500 Btu # ACM135B - White: Advent Air RV Air Conditioner - 13,500 Btu # ACM135 To add a heat strip to warm you up on a cold morning you will need the Electric Heat Strip # ACMHD, and the Start Capacitor # ACMSCKIT is a good idea to ensure your AC is always able to start. I have added links to...
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  • Replacement AC Unit for Dometic in a 2004 Dutchman
    While we do not have a 15K rated unit avaialble, we do have a great option with a simple and straight forward installation in the 13,500 Btu Advent Air RV Air Conditioner, # ACM135B. This Advent Air AC unit works with your existing, in good working order, Dometic air distribution box and thermostat. Everything you need in order to replace or add an AC unit is included, which makes installation simple and easy. This provides air flow of 500 cubic feet/minute.
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  • Recommended Advent Replacement AC for Dometic AC Unit
    I do not see where there is need for special hardware to adapt the option of the Advent Air RV Air Conditioner, # ACM135B AC in place of an existing Dometic unit. However, adapting the wiring is something that will need to be addressed. I suggest you select the Advent Air Replacement RV Air Conditioner for Dometic Setup w/ Start Capacitor, # ACDOM135B. This option in the 13,500 Btu AC unit is a bolt-on installation that includes wiring harness and mounting hardware. It plugs directly...
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  • Will Advent Air AC Unit for Coleman Setups Replace Coleman 13.5k
    The Advent Air Replacement AC Unit for Coleman Setups part # ACCOL135 will replace your Coleman unit that you have now and will work great.
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  • Adding a Heat Strip to Advent AC Units
    The Advent Air Electric Heat Strip - 5,500 Btu # ACMHD can be added to many of the Advent Air Conditioner Units. It can be added to the following to take the chill out of the air: # ACM135 - 13,500 BTU White Air Conditioner # ACM135B - 13,500 BTU Black Air Conditioner # ACM150 - 15,000 BTU White Air Conditioner # ACM150B - 15,000 BTU Black Air Conditioner I also recommend getting the start capacitor # ACMSCKIT to allow you to start your AC without any additional current draw needed which...
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  • Replacement Fan Blade For An Advent RV Air Conditioners
    In order to find the correct replacement fan blade for your 2012 Forest River Cherokee, I am going to need to know what you have in your trailer currently. For instance, if you had the Advent Air RV Air Conditioner # ACM135, then you could use the: -Replacement Fan Blade for Advent Air RV Air Conditioner # PXX128050095. This fan blade will also fit the: # ACM135B, # ACM150, and # ACM150B. If you let me know what air conditioner you have currently, I'd be happy to see if we have something...
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  • Recommended For Best Replacement For Dometic Duo-Therm 620426.321 & Heat Strip
    For the simplest and most straight forward 13.5K btu replacement of your current Dometic air conditioner we have several options. Each of these AC's plug directly into your Dometic setup to work with your existing air distribution box. The Advent Air RV Air Conditioner, # ACM135 is a 13,500 Btu unit that comes in white cover. The # ACM135B is the same unit with a black cover. We also have these same units configured with a start capacitor, # ACDOM135 in white and # ACDOM135B for black. All...
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  • Recommended Replacement for 13,500 BTU Dometic Brisk II Rooftop Air Conditioner
    For a 13,500 Btu replacement of your current Dometic Brisk II AC unit, I recommend the Advent Air Replacement RV Air Conditioner for Dometic Setup, # ACDOM135 for white cowling. Or, for a black cowling, # ACDOM135B. These options come with a start capacitor that will store energy to ensure you can always start up your AC, and will work with your current thermostat; your options are the following:
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  • Advent Air Conditioner Replacement For Carrier, Dometic or Coleman-Mach Air Conditioner
    The only way to know if you have a Carrier or Dometic air conditioner is by looking at your air conditioner, which can certainly be a pain as it's on top of your trailer, but that's the only way to tell what you have. That said, the Advent air conditioners that will work as replacements are the same no matter if you have a Carrier or Dometic, the only difference will be if you need the Carrier adapter or not. You can choose from either 13,500 Btu or 15,000 Btu and if you want White or...
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  • Does the Advent Air Roof RV Air Conditioner ACM135B Come with the Ceiling Control Panel
    Advent Air Rooftop RV Air Conditioner # ACM135B is just the outside part of the air conditioner. For the inside, ceiling portion you could use # ACDB.
    view full answer...
  • Recommended Replacement Rooftop Unit For A Carrier Air RV Air Conditioner System
    There is the Advent Air RV Air Conditioner - 13,500 Btu - Black # ACM135B along with the Carrier Adapter Wiring Kit for Advent Air RV Air Conditioners # ACCARKIT that will also swap out your Carrier Air condenser unit. This type of replacement simply swaps out your rooftop unit with another along with a wiring harness adapter for a plug and play installation.
    view full answer...
  • Difference Between the Advent Air RV Air Conditioner # ACDOM135B and # ACM135B
    The only difference between the Advent Air Replacement Rooftop RV Air Conditioner # ACDOM135B and the part # ACM135B is that the first one includes the Start Capacitor # ACMSCKIT. Other than that the wiring on these units are the exact same. The Dometic setup simply means that this is compatible with your current setup (ceiling vent and thermostat) if you are replacing a Dometic rooftop AC unit. If you are replacing a different rooftop AC unit please let me know and I can see if we have...
    view full answer...

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