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  1. RV Air Conditioners
  2. Advent Air
  3. Complete AC System
  4. 13500 Btu
  5. Ductless
  6. Cool Only
Advent Air RV Air Conditioner System - Manual - 13,500 Btu - Black

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

Our Price: $706.97
RV Air Conditioners
Shipping Weight: 90 lbs
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Ductless AC unit lets you replace an existing AC or add a new AC to your RV. Air distribution box has a built-in thermostat to control the fan and temperature. Start capacitor jumpstarts the AC when camp power or generator power isn't enough. Great Prices for the best rv air conditioners from Advent Air. Advent Air RV Air Conditioner System - Manual - 13,500 Btu - Black part number ACM135BC can be ordered online at or call 1-800-940-8924 for expert service.
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Advent Air RV Air Conditioners

  • Complete AC System
  • 13500 Btu
  • Ductless
  • Cool Only
  • Advent Air
  • With Start Capacitor

Ductless AC unit lets you replace an existing AC or add a new AC to your RV. Air distribution box has a built-in thermostat to control the fan and temperature. Start capacitor jumpstarts the AC when camp power or generator power isn't enough.


  • Air conditioner quickly and efficiently cools the interior of your RV or camper
    • Replaces, upgrades, or adds an air conditioner and air distribution box
    • Compatible with only ductless systems
  • 6-Blade fan with motor has 3 speed settings for increasing or decreasing airflow
  • Air distribution box has adjustable registers on the front and back that let you direct the air where needed
    • Internal aluminum components are rustproof
  • Built-in thermostat controls the fan and temperature settings
  • Start capacitor jumpstarts the AC when a campsite or generator doesn't provide enough power
    • Stores energy that will later be used for the next startup
  • 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
  • Removable air filter prevents dust and dirt build-up on the fan blades
  • 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 and mounting hardware
  • Electric heat strip (ACMHD - sold separately) can be added to remove 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
  • Thermostat temperature range: 65 F to 90 F (16 C to 30 C)
  • Overall dimensions:
    • Air conditioner: 31-3/16" long x 24-7/8" wide x 12-13/16" tall
    • Air distribution box: 22-1/2" long x 21-1/2" wide x 3-1/2" tall
    • Start capacitor: 2-1/8" long x 3-5/8" deep x 6-5/16" 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 existing, old or broken air conditioner or add a new air conditioner to an area on your RV or camper that doesn't already have one. 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. For your convenience, the included air distribution box has a built-in thermostat that lets you set the fan speed and temperature. The included start capacitor will help jumpstart the AC. This beneficial upgrade provides the AC a boost when shore power or generator power isn't enough to start it. And everything you need in order to replace or add an AC unit is included, which makes installation simple and easy.

Air Distribution Box and Thermostat

Advent Air Air Distribution Box

The AC unit includes an air distribution box with a built-in thermostat. The dial on the left controls the 3 cool settings and the 3 fan speed settings, which let you increase or decrease the airflow. If you add an electric heat strip (sold separately) to remove the chill on cold mornings, then the dial also controls the heat setting. The dial on the right allows you to set the temperature. Additionally, there are adjustable registers on the front and back of the box. These can be tilted up, down, or side-to-side for directing the air where needed. The removable air filter prevents dust and dirt from building up on the fan blades.

Start Capacitor

Advent Air Start Capacitor

If your campsite or generator isn't able to draw the power you need, then you may have difficulty starting your AC unit. The included start capacitor, however, can eliminate this problem. The capacitor stores energy that will later be used to jumpstart the AC. Once the sufficient amount of power has been supplied to the AC, the compressor will start to run, and the internal relay switch will turn the start capacitor off. At the same time, the compressor will send "back voltage" to the relay switch and capacitor in order to energize them for the next startup.

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 required during installation.

To install the start capacitor, bolt it to the fan motor support with the included hardware and then route the wires to the run capacitor.

Once installed, the hard plastic cover on the AC can easily be removed for maintenance and cleaning.

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

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

ACDB Advent Air RV Plenum for Air Conditioners - White

ACMSCKIT Advent Air Start Capacitor for RV Air Conditioners

Item # ACM135BC

Installation Details ACM135BC Installation instructions

California residents: click here

Customer Satisfaction Score:

Customer Reviews

Advent Air RV Air Conditioner System - Manual - 13,500 Btu - Black - ACM135BC

Average Customer Rating:  4.6 out of 5 stars   (358 Customer Reviews)

Ductless AC unit lets you replace an existing AC or add a new AC to your RV. Air distribution box has a built-in thermostat to control the fan and temperature. Start capacitor jumpstarts the AC when camp power or generator power isn't enough.


Received without any damage, product has performed well, would have given 5 stars but inner mounting plate was not strong enough where you tighten the bolts to compress the gasket. Used fender washers to add some strength to keep it from bending. Gasket is very firm and cannot be compressed to the torque spec recommended in the instructions. If I installed it again, I would put some sealant on the gasket face and add some flat stock over the holes before I tighten it down. Over construction quality was excellent. Used it all summer with no problems.


My husband installed this as a second air conditioner in our 5th wheel. Installation took a little longer than expected due to getting the inside template to line up with the main unit. Also, it is pretty noisy on medium and high; however, that doesn’t bother us as we like to sleep with “white noise”. Overall, it cools well and is a fairly straightforward installation with minor adjustments needed. If you are mechanically inclined, installation should not be an issue.


Ordered this rooftop AC to replace an old one on my houseboat. Received in two days and installed in a few hours! Works great! May even add the optional heat strip for next winter.


A very clean unit.. Works perfectly. Easy to install. Came with a "soft Start" capacitor... Use it almost every day.. Replaced a dead unit, fits in the normal 14" vent square... Takes 110 AC does not need 12 volt...


Not installed yet but based on price, value and delivery, I’m giving this 5 stars.
Never bought anything from etrailer I’ve ever been disappointed with. Dolid rep, great prices, hassle free shopping and delivery.


Sent me a defective 13.5 BTU ac. When I asked about a replacement, I was asked why would we replace it, we need you to drive 2 hours and have it repaired because it is Warranty. No warranty is when a product fails after use, defective is when it comes broken.

Etrailer Expert

Katrina B.


Oh no! If it arrived defective, lets get it replaced! I have sent your information over to customer service for them to get a replacement sent out to you.


Excellent rv ac for the price except the hardware that comes with all the screws and mounting bolts where not long enough.
Everything is now installed and works perfectly.
I have bought items from etrailer for years and your customer service is second to none! Thank you!!


I have bought several things from these guys and the service is great.I will continue doing business with them.





We are very pleased with the purchase of the 13,500 BTU Advent Air RV Air Conditioner for our camper trailer. Excellent customer service from the moment we placed the order.
Especially helpful was the video tutorial step by step how to install the AC.
It works perfectly and will almost freeze us out of the trailer on High!!!


Very pleased with this unit. This was a new install onto a 2002 Palamino Bronco 1200 slide in pop up truck camper. Installed directly onto existing 14" roof vent. Total project took under 2 hrs. Camper was not pre-wired for A/C, so 20A circuit was installed using plastic wire conduit/moulding.

I had originally wanted to use a 2000w Honda generator to power camper, but will need to upgrade to a bigger generator to power this unit.


I am very impressed with your customer service and the speed that it was delivered and I will be sending photos of it when installed but instead of the 75 degrees it was yesterday, it's snowing today. Because I've got to crawl on top of the camper to install it, I'll send photos when the snow stops and it warms up.


Advent 13.5k AC, easy install, works great. 10/10


Advent air conditioner arrived in a timely manner. Everything was as expected.
Installed the unit, and it worked fine. Only issue was that the instructions for installing the additional start capacitor were a little vague. Talked to David at etrailer, and he provided an excellent video that clarified the installation. It would be nice for etrailer to provided a roof adapter for my ProMaster to fit the contour of the roof, but I was able to obtain one from Impact Graphics to ensure a leak proof installation.
Have been very pleased with everything I have ordered from etrailer.


As a customer I was not very satisfied with the attention I received


My order was received sooner than expected. Very friendly and helpful people with customer service.


Awesome customer service speedy delivery will definitely recommend and order from you again


My review is on Lori at etrailer, when I ordered my advent a/c unit I knew it would not be available for 6 to 8 weeks,she kept me informed & when they received a shipment let me know, delivery was quick. Thank you Lori for keeping me informed . Due to travel I won't be installing the unit till spring so I can't review it at this time. I have bought from etrailer in the past & will again in the future, Great job.


Haven’t got it installed yet, it arrived and anxious to get going,


Quick ship seems decent installed well


Good a/c
This is my second air for
my camper it’s working fine I’ve had the first one for a year now I’m glad etrailer sends a quick start with it that’s the first thing it needs. Working with etrailer is great friendly and fast I will be doing business with them again thank you etrailer.


It's great product, but noisy. but it's a nice A/C.



working great! great product! its noisy but all the RV-AC are noisy.


Came early. Amazing customer service.


Great company to work with!


Easy instalation. Fast shipping. Time will tell on the performance of the unit. So far so good.


made too cheap Poor quality

Show More Reviews

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

  • 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.
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  • What Type of Outlet Does Advent Air RV Air Conditioner # ACM135BC Draw Power From
    The Advent Air RV Air Conditioner # ACM135BC that you referenced is designed to be powered from a 115 VAC style outlet like a standard house outlet. It would not need a 20 amp or 30 amp outlet.
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  • Is The Advent Air RV Air Conditioner System Compatible With A 1997 Starcraft Pop-Up Camper
    The Advent Air RV Air Conditioner System # ACM135BC is going to be a complete replacement of your 1997 Starcraft pop-up camper's AC system so you shouldn't have any compatibility issues. I've attached a video below where Shane will walk you through the installation process. I highly recommend having a second set of hands to help move the rooftop units around as they can be a bit heavy.
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  • Are Additional Items Needed To Install The Advent Air RV Air Conditioner System
    You won't use sealant on the roof when installing the Advent Air RV Air Conditioner System # ACM135BC. The foam gasket is going to get compressed as you bolt down the unit and form the seal. It's important that you don't drag or slide the unit on the roof as you could damage the roof membrane or the AC's gasket. You shouldn't really need anything other than some butt connectors or wing nuts to make your electrical connections. The important thing here is that since you're installing this...
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  • 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.
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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.
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  • Black Version of Advent Air AC Unit with Start Capacitor and Distribution Box
    We do have the 13.5k BTU Advent Air RV AC unit with the air distribution box and start capacitor with the part # ACM135BC.
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  • Advent A/C That Works With A 2001 Keystone Sprinter 274RL
    For your 2001 Keystone Sprinter 275RL, the Advent Air Replacement RV Air Conditioner for Dometic Setup w/ Start Capacitor # ACDOM135 will work great for you as long as you're replacing your Dometic AC unit and are planning on reusing the existing wiring. If you're wanting a fresh install on your Keystone Sprinter 274RL, then you'll want to take a look at the Advent Air RV Air Conditioner w/ Air Distribution Box and Start Capacitor # ACM135BC instead. This kit includes the same size AC...
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  • Recommended Replacement RV Air Conditioner for Dometic Setup
    I recommend the Advent Air Replacement RV Air Conditioner for Dometic Setup w/ Start Capacitor, # ACDOM135. This is a 13.5K AC unit that replaces Dometic units by plugging directly into your Dometic setup to work with your existing air distribution box. It plugs directly into your Dometic setup and works seamlessly with your existing, in-good-working-order Dometic air distribution box and thermostat eliminating the need of an adapter wiring kit.
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  • What is Needed to Install 13,500 Btu Advent Air Conditioner
    So there's a few things that are going to be needed in order to install the Advent air conditioners, and for a tent trailer I do recommend going with the smaller 13,500 Btu. But the first thing you need to do is ensure you have a roof that is 2-1/2" to 5" thick in order to support the unit; you will also need to open a 14-1/4" long x 14-1/4" wide hole for the unit. Adding this AC will require not only the main AC unit, but also an air distribution box. For that you can use one of the...
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  • Recommended 120v Air Conditioner For Motorhome
    The RV air conditioners we offer do run off 120v power, and for a motorhome like yours the best option for a rooftop AC is a 13,500 Btu rating with an air distribution box as this will give you plenty of cooling power and easy controls. For that I recommend going with Advent, and you can choose from either White or Black in color: - White: Advent Air RV Air Conditioner # ACM135C - Black: Advent Air RV Air Conditioner # ACM135BC These are 115v rated but work with a 120v outlet, and also...
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  • Lighter Weight RV AC Unit for Pop Up Tent Trailer
    The Advent Air AC units like the # ACM135BC are the lightest weight so that would be what I would go with. This comes with a air distribution vent as well which you would need since your trailer does not have duct work. It weighs a total of 68 lbs. Most other options are around 10 lbs heavier or so.
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  • Recommended Roof Top Air Conditioning Unit for Ram Van
    I recommend using the Advent Air RV Air Conditioner w/ Air Distribution Box and Start Capacitor - 13,500 Btu - Black # ACM135BC since it comes with a start capacitor that will help start the unit on limited power, which is something you will likely experience with a van conversion when not connected to a generator or shore power. This is a ductless unit that comes with an air distribution box included, so you can control the unit straight from that. You will likely need to build a frame...
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  • What is Needed to Install Air Conditioner in Enclosed Car Trailer
    We can get you the air conditioning you need to keep cool in your enclosed car trailer; what you will need is a ductless AC unit with a distribution box that will control the unit as well as blow the air in, as well as a generator for a power source (if you don't have one). I highly recommend going with a 15,000 Btu AC because of its additional cooling power which will cool your trailer down quicker, especially with a 24 foot trailer, though I will list the options for both the 13,500...
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  • Advent Air Conditioner to Replace Dometic Air Conditioner
    This Advent Air Replacement Rooftop RV Air Conditioner part # ACDOM135B replaces an existing Dometic Air Conditioner. The unit plugs directly into where your Dometic setup was installed. You do not need anything else for installation as long as your current air conditioner is a Dometic Air conditioner setup. You use the thermostat and ceiling vent of the Dometic setup. I recommend Advent Air part # ACM135BC if you are not replacing your existing air conditioner. This Advent Air Conditioner...
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  • Recommended Rooftop Air Conditioner for Cargo Trailer with 2,000 Watt Generator
    The best rooftop air conditioner unit we have for you is going to be the Advent Air RV Air Conditioner part # ACM135C for white or part # ACM135BC for black which puts out 13,500 Btu's. The reason that this is the best rooftop air conditioner is because it comes with a start capacitor. This is going to be needed as it reduces the amount of watts that is required upon startup. If you were not using the start capacitor then you would need a generator that has at least 5,000 watts which means...
    view full answer...
  • Small Complete AC Unit for Transport Trucks
    We have a good solution for you the Advent Air RV Air Conditioner w/ Air Distribution Box and Start Capacitor part # ACM135BC would be a great choice. It will require 14"x14" hole to be made in the roof but after that it is straight forward and has everything you will need. The air distribution box has the controls on it to turn it up or down and the start capacitor will help to ensure it doesn't draw too much power when starting it. I would stya with the 13,500 BTU as this is very common...
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  • Recommended Plug And Play Replacement For A Dometic RV Rooftop Air Conditioner Unit
    The number that you gave me didn't come back to anything but there is a quick way to tell if the Advent Air Replacement RV Air Conditioner for Dometic Setup w/ Start Capacitor # ACDOM135B is going to be compatible. First, remove the shroud and check the BTU rating of your current unit. You'll want to match or go higher than your current rating. The # ACDOM135B has a 13,500 BTU rating. If you have a 15,000 BTU rating on your current unit you'll want the # ACDOM150B instead. Second, remove...
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  • Will 13,500 Btu Advent Air Conditioner Cool Enclosed Trailer
    Yes, the 13,500 Btu Advent Air RV Air Conditioner with Air Distribution Box and Start Capacitor # ACM135C (White) or # ACM135BC (Black) will cool your enclosed trailer. These are ductless systems as I assume your trailer does not have ducts. That said, it will essentially need to always be on so you do need to monitor your generators and be sure they are full. For generators I recommend the etrailer 4,500-Watt Portable RV Generator - 3,600 Running Watts - Propane or Gas - Electric Start...
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  • Advent RV Air Conditioner Decibel Rating
    The Advent Air 13.5k RV air conditioner units have a decibel rating of 76. The Furrion Chill units like the 15k part # FR92PR is a little louder at 80 decibels but blows colder air. Even though it is a little louder, I recommend the Furrion.
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  • Advent Air RV AC Unit that Uses Ceiling Controls Instead of Wall Controls
    The Advent Air AC Unit part # ADV94FR comes with a vent setup that is designed to be controlled with a wall thermostat but we do have the # ACM135BC that comes with a lower vent assembly with controls built into it. I attached an install video and set of instructions linked to this page.
    view full answer...
  • Roof Air Conditioner Recommendation For A 1997 Chevrolet Express Van
    For your 1997 Chevrolet Express van, I recommend the Advent Air RV Air Conditioner w/ Air Distribution Box and Wall Thermostat # ADV94FR. This AC will do a great job keeping your Chevrolet Express van cool thanks to its 6 blade fan with motor. This unit features a bolt on installation, a start capacitor to jumpstart the AC when a campsite, or generator doesn't provide enough power, and a wall mounted thermostat.
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  • Recommended RV Air Conditioner with Non-Ducted Assembly and Black Shroud
    You may want to consider the Advent Air RV Air Conditioner with Ceiling Vent and Start Capacitor - Black # ACM135BC or the larger # ACM150BC which will give you the non-ducted assembly as well as the black cover. This AC unit also has the start capacitor for storing energy to make startup easier under less power draw, which is really nice with certain RV power supply locations. If you want the heat strip as well then use # ACM135BCH or # ACM150BCH instead. If you have a larger area to...
    view full answer...
  • Installing 13500 BTU Advent AC To 7x12 Enclosed Trailer
    Thanks for reaching out, for you I recommend going with the parts below. **Advent Air RV Air Conditioner w/ Air Distribution Box and Start Capacitor - 13,500 Btu - Black # ACM135BC. **Advent Air RV Air Conditioner w/ Air Distribution Box and Start Capacitor - 13,500 Btu - White # ACM135C. *Roof Vent Installation Kit - Sealant, Butyl Tape, Screws - White # 344270KITW. My recommendation is to go with the Advent Air 13,500 BTU unit, comes in black or white. This unit will move more than...
    view full answer...
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Info for this part was:

Employee Jameson C
Expert Research:
Jameson C
Employee Joshua S
Video Edited:
Joshua S
Employee Kathleen M
Updated by:
Kathleen M
Employee Mary K
Updated by:
Mary K
Employee Wilson B
Updated by:
Wilson B
Employee Adam Y
Updated by:
Adam Y
Employee Noah M
Updated by:
Noah M
Employee Cody B
Updated by:
Cody B
Employee Manda E
Updated by:
Manda E
Employee Kim H
Updated by:
Kim H
Employee Dustin K
Video by:
Dustin K
Employee Amanda M
Edited by:
Amanda M
Employee Shane H
Test Fit:
Shane H
Employee David F
Installed by:
David F
Employee Halie H
Written by:
Halie H

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