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

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

Item # ACM135
Our Price: $620.99
You Save: $465.00
RV Air Conditioners
Shipping Weight: 78 lbs
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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 - White part number ACM135 can be ordered online at or call 1-800-940-8924 for expert service.
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Advent Air RV Air Conditioners - ACM135

  • AC Unit Only
  • Advent Air
  • Dometic
  • 13500 Btu
  • Ducted
  • Ductless
  • White
  • Cool Only
  • Advent Air

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
  • White, 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 limited 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

Advent Air AC Installation 13,500 BTU

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 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), 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 - 2-Year Card  AA 2-Year Card

Warranty - Dealer Information  AA dealer info

ACM135 Advent Air RV Roof Air Conditioner - 13,500 Btu - White

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Customer Satisfaction Score:

Customer Reviews

Advent Air RV Air Conditioner - 13,500 Btu - White - ACM135

Average Customer Rating:  4.6 out of 5 stars   (979 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.


The unit is smaller than the unit I replaced and the fit was perfect at the access way. The Advent was plug and play with the Dometic harness and lower bezel. I couldn't be happier I had to look up torque specs for the gasket, as there were no instructions, but it was just a Google search (33-35 inch pounds)


This by far was the easiest installation of an RV Rooftop AC Unit! Literally several phillip head screws to undo the switch panel. Then unplug the old unit from the switch panel four 7/16 screws removed and then lift out the old unit. Unscrew the old fan vent with two screws. Screw this back onto the new unit, lift in place and bolt down the new unit. Less than an hour installation. And a great dollar savings over the original unit.


Was very impressed with the amount of air that this unit gives from ducts. About half
the weight of a Dometic and half the price.
Easy Installation - hardest part of this was removal of old unit. Will be purchasing more
when other old AC units quit cooling.


Price was excellent! Shipping was very quick! Installation was plug and play, simply the reverse of removing the old Duotherm Roof AC. I reused the original interior panel with out problems.
Thanks etrailer, I will buy from again.
Some advice to purchaser's: the AC was delivered by 3rd party carrier and left standing on end on the front porch. My dad was an HVAC tech and had told me long ago, "if a refrigerator or AC unit is stored or moved on it's side to leave it upright for 24hours before plugging it in". Good advice. It allows the compressor oil to drain back into the compressor.


Great A.C. and perfect replacement for my Dometic unit that was 21 years old. Easy installation with all of the foam sealant in the right areas.
I would given etrailer five stars but there's two items they can improve on.
1. Better package and bubble wrap for the new roof unit. My cover was cracked on one side due to no secure wrapping.
2. A basic diagram of where to attach the old coolant coil sensor.
Last but not least Etrailer did it again with a affordable product and fast shipping. I'm in South Florida and my travel trailer is 60° in open sun with an out temperature of 95°.
Thanks guys for your outstanding customer service.


I tried working with a different company (united rv) what a joke.
E-trailer is the best !


Just finished installing this unit and it truly is a direct replacement for Dometic. I feel I got a fair price and shipping was fast. Taking off 1 star because the unit did arrive with a small dent along the base but this did not affect the install or function. Also, there was no install or warranty information included with the unit. Since this is the 2nd time I've had to replace the A/C on my RV, warranty info is kinda important.


The installation was literally plug and play. New unit works well. Advent needs to upgrade their packaging. The first unit I got was damaged. The second was damaged but not as badly. E trailer was excellent in getting me a replacement, shippers are hard on stuff. Really happy with the outcome.


Finally received a month after I ordered the unit with that being said the installation wasn’t too bad however I had to do a little modification due to the 7 inch bolts being a quarter inch shy for my trailer but once I’ve got that figured out the rest was smooth sailing. So we’ll see what happens next Summer as the heat is now winding down.


Bought unit to replace dead one on our 5th wheel. Our set up is ducted, so there is no air distribution box and the relay box ( where the 110v connects and 6 pin plug connects) was mounted under the old ac units shroud. This is not included with the unit. Unit arrived and install was very straight forward, I had to use the Dometic relay box from the old unit and install a new foam gasket divider for return air. I was up and down in about an hour. Doesn't blow super strong and isn't as quiet as the old unit, but it blows cold and everything works.
Would be nice if Advent included a owners/installation manual, but a quick trip to was all it took to find one.
I will mention that I called etrailer to ask about the relay box and Karen was very helpful and very prompt in getting with sales and tech and then back to me with the answers. Two thumbs up.


This was a replacement for a Carrier V 15,000 roof top. Still using the Carrier control panel and ducting. Runs and cools good but cycles more than our older advent air 13k ductless in the bedroom. Cycling may be caused by the ducting instead of ductless. It is quieter than the old Carrier V and seems to cool the same.


I was kind of nervous doing this project. It literally took me less than an hour including gathering tools and clean up. The simplest installation I've done all week.81° outside, 68° inside. What a difference


Delivery went well and installation was fairly easy. So far it blows very cold.


Great Price , Great Service , and Fast Shipping what more could you ask for.


The shipping and service on holiday weekend was excellent and got me out of a bind. Thank you and definitely will be returning


Terrible customer service from ASA direct import. They will sell you a product that doesnt work and then tell you that you have to hire a tech to verify it doesnt work. They will screw you out of your money.


So far so good. Unit installed in a couple hours AB’s is working well. Dometic duotherm failed so I ordered this one to replace it. Easy to remove old one and relatively easy to install new one.

The two challenges were getting the big heavy box on the roof and aligning the bolt holes between the air handler and the new a/c unit. I eventually got these done myself but would highly recommend you get a helper for those two portions of the job.

Another tip would be to run a screw into the ceiling on two corners of the air handler before you lift the old unit off. Mine wanted to fall out of the ceiling once I got roof unit off; that meant I had to try to hold the air handler up while repositioning the air conditioner from below by reaching up through the air handler. Had I secured air handler first it would have been much easier.

Install of the start capacitor was easy. Note: the start capacitor has two black wires that look the same except for the connectors are *slightly* different. The diagram says put black wire on common and then put black wire on the other terminal. And I couldn’t tell from the picture which connector went on each. I called an electrician friend and he says capacitors don’t have polarity, in other words it doesn’t matter which of the two wires goes to which terminal. I took his advice and all seems well.

One installed the unit itself puts out nice cold air. It’s a smaller footprint than my 15 year old dometic, but the past that mattered lined up perfectly. I think it’s about an inch taller also, maybe a little less. Just something to be aware of if you’re pushing the height limit on overpasses already :-)


Exactly what we needed. Installation was simple and customer service was great.
I ordered 2 new ac’s for my camper. At the time of this review I have only installed 1 but it is working great. I am no professional but I was able to install it by myself. However, I recommend getting help with lifting and lowering the units to and from the roof. I will review the other one once I get it installed.


Great product, my son and I had it installed and working in less than 45 minutes!! Blows nice cold air!! thanks for all your help!


Good replacement product....Easy switch out..plug n complaints other than the heating element is pretty much useless.


Easy to install and retrograde old parts to fit new. Just installed yesterday, but working fantastic so far. Fast delivery and no issues with damage or wrong part shipping. Definitely using e again


Will not replace Mach coleman air conditioner even as stated with adapter kit. That part is worthless and does not work. The only way to get this to work is with their trim kit with cheap thermostats. It absolutely cannot be wired into your existing system. Look for a better option if replacing Mach Coleman air conditioners.


Quick delivery. Nonproblems. I will unpack tomorrow and hope it works for my rv.


Shipping was quick. Easy to install and it’s working great. You can’t ask for more than this!


Excellent service. Delivery took a little longer, but I'm in Canada so had to clear customs etc. Everything with product looks good but won't install until a little warmer so can't comment at this time. Very pleased with everything at this point.

Show More Reviews

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

  • What is the Correct Size AC Unit for a 30 Foot Long Trailer
    The correct size air conditioner for your trailer is going to depend of several factors such as square footage, ambient temperature, number of rooms, etc. However, I can say that a 30' long enclosed trailer would be best suited with two 13,500 btu units. For this, I recommend the Advent Air Rooftop RV Air Conditioner part # ACM135C which is for non-ducted trailers that I assume is what you have. If you want the heat pump then use # ACM135CH instead. The air conditioner can cool up to...
    view full answer...
  • Air Conditioning Kit Needed for a 6 x 6 x 12 Enclosed Cargo Trailer
    For an air conditioning kit I recommend either part # ACM135C in white or part # ACM135BC which is the same part but in black. These kits include a 13,500 Btu AC unit along with the ceiling vent and the start capacitor. When it comes to wiring for your AC unit this really need to be done by a professional. Typically our customers are just replacing old units so there is no wiring kit used to get everything hooked up to the electricity on your trailer.
    view full answer...
  • Recommended Air Conditioner for 26x7-1/2 Foot Enclosed Racing Trailer
    For your 26x7-1/2 inch enclosed trailer, based on your photo you will want two units. If you simply want to replace the unit, I recommend the Advent Air RV Air Conditioner w/ Ceiling Vent and Start Capacitor - White # ACM135C. This will give you the roof top unit, the vent assembly with built in thermostat, and a start capacitor to make sure you can start the unit even when the shore power is at an amperage that isn't strong enough for most systems to start. The capacitor helps with...
    view full answer...
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  • Air Conditioner Recommendation for V-Nose Enclosed Trailer
    A smaller RV air conditioner unit with a lower vent assembly would be your best option like the Advent Air RV Air Conditioner w/ Air Distribution Box and Start Capacitor # ACM135BC. This puts out up to 13.5k BTU which would provide more than enough cooling power and also has a start capacitor which means less strain on your power supply. As long as your roof is between 2-1/2 inch and 5 inches thick this will fit and work great.
    view full answer...
  • Does Advent Air Rooftop RV Air Conditioner Need a Mounting Bracket
    The Advent Air Rooftop RV Air Conditioner # ACM135C does not require a mounting bracket to install, just a 14-1/4" x 14-1/4" opening and a framed with 3/4" lumber, as you can see by the accompanying cut out I added from the linked installation instructions.
    view full answer...
    Image 1 for
  • AC Unit Recommendation for Enclosed Cargo Trailer that is Insulated
    The Advent Air Rooftop RV Air Conditioner # ACM135 that you referenced would work great for your application but since you'll also need the ceiling vent and thermostat your best option is the # ACM135C which is a kit that includes that as well. This will give you great cooling for the smaller room and since you've done a great job insulating the room it will stay cool longer and easier. I am sure some people have successfully ran a generator while travelling but we do not recommend it....
    view full answer...
  • Installation of Advent Air RV Air Conditioner Replacing Dometic Air Conditioner
    Based on the question you're asking about I'm assuming you have a Dometic setup right now. The 6-pin wiring harness on the # ACM135 will allow you to use the other components from your existing Dometic setup. I don't know exactly what you're referencing with all the other wiring but the air conditioner will still be hardwired for power like what you have now. I have attached a review and installation video below, along with the air conditioner wiring diagram for your reference.
    view full answer...
    Image 1 for
  • AC Unit Recommendation for 28 Foot Enclosed Trailer
    Based on the square footage of your trailer and the hot climate you'd easily get by with a 13,500 btu unit like the Advent Air # ACM135C. The units blow much colder air, plus this kit comes with the ceiling unit so that you can control it since your trailer wouldn't have ceiling ducts.
    view full answer...
  • Is Sealant Required to Install the Advent Air Rooftop RV Air Conditioner
    No, it is not necessary to use sealant when installing the Advent Air Rooftop RV Air Conditioner # ACM135C on your trailer. This unit is designed so that is not necessary because it has a thick gasket that prevents water from leaking in. I have added a link to the written install instructions of this AC unit for you to take a look at.
    view full answer...
  • AC Unit Recommendation for 2023 Palomino Backpack Pop Up Camper 1240
    Since the 2023 Palomino backpack pop up camper 1240 is a smaller camper compared to travel trailers you could get away with a smaller BTU unit like the Advent Air RV AC unit part # ACM135C which comes with everything needed to install as well. It would install in a 14 inch square hole in the roof which is the same size as what RV roof vents are designed to fit. This has a 13.5k BTU rating, comes with an air distribution box and a built in thermostat as well.
    view full answer...
  • Parts Needed to Install a New Air Conditioner on a Trailer with No Current Air Conditioner
    To install an A/C on your cargo trailer that does not currently have anything for an A/C you will need a complete A/C set-up like the Advent Air RV Air Conditioner w/ Air Distribution Box and Start Capacitor # ACM135C. This will include everything you need for the A/C other than the power source. For the power you will need to get 12 gauge 2 wire and a 20 amp circuit breaker from your local home supply store to get power to the A/C.
    view full answer...
  • Proper SIze Air Conditioner for 28 Foot x 8-1/2 Foot Enclosed Car Hauler
    For a 28 foot x 8-1/2 foot enclosed car hauler a 13,500 Btu AC unit like the Advent Air RV Air Conditioner # ACM135 that you were looking at will work great. This will do a really nice job of cooling this size space with a capability to cool 500 cubic feet per minute. You might be able to get away with something a bit smaller but going with an AC unit that has a bit more capacity than needed allows it to work less and more efficiently when it does, leading to a longer lifespan and less...
    view full answer...
  • AC Unit Recommendation for 1993 Casita Trailer
    For what you are looking for I would go with a 13.5k BTU AC unit for your Casita as basically you just need more BTUs. It's better to have a little more AC unit than needed then the opposite problem which is what you have now. So for that the Advent Air Unit # ACM135C would do a great job. It comes with an air distribution vent assembly and a start capacitor as well.
    view full answer...
  • Recommended Replacement AC Unit for a Dometic 13,500 Btu AC Unit
    To replace your Dometic 13,500 Btu AC unit, I recommend the Advent Air RV Air Conditioner item # ACM135B in black or the item # ACM135 in white. This Advent Air AC unit works with your existing Dometic air distribution box and thermostat. So long as they are in working order. Everything you need to replace your AC unit is included. I have attached an installation video below.
    view full answer...
  • Recommendations for Horse Trailer AC
    I suggest the Advent Air RV Air Conditioner w/ Air Distribution Box and Start Capacitor, # ACM135C. This is a 13,500 Btu ductless air conditioner that has a distribution box with built-in thermostat to control the fan and temperature and a start capacitor that jumpstarts the AC when on a generator. This will fit a roofs 2-1/2" to 5" thick and requires an opening size of 14-1/4" long x 14-1/4" wide. This same unit including a heat strip is # ACM135CH. Or, with a heat strip include but...
    view full answer...
  • Best Air Conditioner With Heat for Enclosed Trailer
    The best air conditioning unit for your enclosed trailer is going to be from Advent, and includes a start capacitor and heat strip. You can choose from either white or black in color: - White: Advent Air RV Air Conditioner with Air Distribution Box, Start Capacitor, and Heat Strip - 13,500 Btu # ACM135CH - Black: Advent Air RV Air Conditioner with Air Distribution Box, Start Capacitor, and Heat Strip - 13,500 Btu # ACM135BCH For an enclosed trailer, the 13,500 Btu will be plenty of power...
    view full answer...
  • Troubleshooting Fan Issue On An Advent Air RV Air Conditioner
    First remove the shroud on your Advent Air RV Air Conditioner - 13,500 Btu - White Item # ACM135 and see if the fan will move freely, you could have something locking it up. If that isn't the cause and you're getting proper power to the motor, like you said, then you will need to replace it and will have to reach out to the manufacturer for the replacement.
    view full answer...
  • Does Replacing Dometic AC Require Wiring
    To replace your Dometic AC you won't have to wire the Advent Air RV Air Conditioner # ACM135. If you take a look at the accompanying photo you can see the 6-pin wiring harness the AC comes with and you'll plug that into your existing Dometic set up.
    view full answer...
    Image 1 for
  • Physical Location of the DIP Switch for Advent Air Conditioner
    The physical location of the dip switch for the Advent Air RV Air Conditioner, # ACM135 is on the back of the thermostat.
    view full answer...
  • Where Does the Insulation Foam Go When Installing the Advent Air RV Air Conditioner
    The stick black foam pieces should be installed inside the hole where the AC sits to help seal the area. The diverter box wiring diagram you're looking for I have attached below along with the functions of the wires. If you have any other questions feel free to come back and we'll take care of you.
    view full answer...
    Image 1 for
  • Can A Drain Hose Be Added To An Advent Air RV Air Conditioner
    Advent Air units, like the # ACM135, have a pan in the front and three drain holes that allow water to leak out onto the roof of the RV. The only way to get a hose attached to this would be for you to rig something together and attach it to the bottom of the pan at each hole. There isn't a lot of space between this and the RV roof so it's most likely not going to be easy to accomplish.
    view full answer...
    Image 1 for
  • Running a Two Wire RV Furnace to Single Wire Advent Air AC Unit Thermostat
    There should be a positive and negative wire that comes from your furnace. One being Therm+ and other being Therm-. Therm+ needs to be capped off and Therm- needs to run to the brown/white wire of the Advent thermostat control. You might need to consult the manual of your thermostat to ID both wires.
    view full answer...
  • Advent AC Troubleshooting For Inoperable Fan
    I have a solution for you. First in regards to your Advent Air RV Air Conditioner - 13,500 Btu - White # ACM135, you need to take off the shroud and check if the fan itself will move freely. If it feels rough, gummed up or even jammed it will need to be cleaned and oiled. If you are getting proper power to the fan and it moves freely you will need to replace the fan motor and that is something we do not carry. You will need to contact the manufacturer to get a replacement.
    view full answer...
  • Compatible Replacement Air Conditioner For A Dometic Duo Therm Quick Cool
    Yes, the Advent Air RV Air Conditioner # ACM135 will replace your current Dometic Duo Therm Quick Cool. This unit is designed to replace an existing Advent Air, Dometic, Coleman Mach, or Carrier air distribution box and thermostat.
    view full answer...

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Info for this part was:

Employee Lindsey S
Edited by:
Lindsey S
Employee Jameson C
Expert Research:
Jameson C
Employee John H
Expert Research:
John H
Employee Adam R
Expert Research:
Adam R
Employee Kathleen M
Updated by:
Kathleen M
Employee Mary K
Updated by:
Mary K
Employee Wilson B
Updated by:
Wilson B
Employee Hannah L
Updated by:
Hannah L
Employee Halie H
Updated by:
Halie H
Employee Adam Y
Updated by:
Adam Y
Employee Cody B
Updated by:
Cody B
Employee Carrie F
Updated by:
Carrie F
Employee Kim H
Updated by:
Kim H
Employee Chris R
Video Edited:
Chris R
Employee Amanda M
Written by:
Amanda M
Employee Shane H
Test Fit:
Shane H
Employee Jonathan Y
Video by:
Jonathan Y

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