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  1. RV Air Conditioners
  2. Advent Air
  3. Complete AC System
  4. 13500 Btu
  5. Ductless
  6. Single Zone
Advent Air Low Profile RV Air Conditioner System - Manual - 13,500 Btu - Black - R32
Advent Air

Advent Air Low Profile RV Air Conditioner System - Manual - 13,500 Btu - Black - R32

Part Number: ADV25SR
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$902.24
RV Air Conditioners
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Upgrade your RV's ductless AC with this low-profile complete system from Advent Air. 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 Low Profile RV Air Conditioner System - Manual - 13,500 Btu - Black - R32 part number ADV25SR can be ordered online at etrailer.com or call 1-800-940-8924 for expert service.
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  • Reviews (21)
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Advent Air RV Air Conditioners - ADV25SR

  • Complete AC System
  • 13500 Btu
  • Ductless
  • Single Zone
  • Black
  • Cool Only
  • Advent Air
  • 115V
  • Rooftop

Upgrade your RV's ductless AC with this low-profile complete system from Advent Air. New R32 refrigerant meets 2025 EPA regulations. Not backwards compatible with any AC systems from 2024 and earlier.


Features:

  • Low profile air conditioner quickly and efficiently cools the interior of your RV or camper
    • Replaces, upgrades, or adds an air conditioner
    • Compatible with a ductless system
  • Start capacitor jumpstarts the AC unit if your campsite or generator isn't supplying enough power
  • 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
  • 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
  • Electric heat strip (ADV34QR - sold separately) can be added to remove the chill on cold or frosty mornings
  • 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): 9.9 amps
  • Fan motor power draw (while running): 2.6 amps
  • Capacity: 13,500 Btu per hour
  • Electrical rating: 110V, 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" long x 24-15/16" wide x 10-1/8" 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: R32, 16.9 oz
  • Wire gauge: 12 AWG
  • Air conditioner weight: 69 lbs
  • 2-Year limited warranty


Notes:

  • This unit is not backwards compatible with any AC systems from 2024 and earlier. New R32 refrigerant meets 2025 EPA regulations.
  • This unit is not compatible with any Dometic Duo Therm RV AC systems.

Air Distribution Box and Thermostat

Advent Air Air Distribution Box

The low profile 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

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 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), 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



ACRND25 Air Distribution Box w/ Built-In Thermostat for Advent Air RV Air Conditioners - White - R32

ACR135LPB Advent Air Low Profile RV Air Conditioner - 13,500 Btu - Black - R32

ACMSCKIT Start Capacitor for Advent Air RV Air Conditioners




California residents: click here


Ratings & Reviews

4.8

21 reviews
Upgrade your RV's ductless AC with this low-profile complete system from Advent Air. New R32 refrigerant meets 2025 EPA regulations. Not backwards compatible with any AC systems from 2024 and earlier.

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Gives me an additional 4 inches lower height so I can now get the camper in my garage



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Thanks fast service



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You were very helpful and it is perfect!



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The unit runs and cools nicely, but with the thermostat set at the coldest, it doesn’t get as cold as I would expect before the compressor kicks off.



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Great service and received air conditioner in two days. Thanks Hannah!



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So far the product has been great more importantly, customer service is even better than five stars Jill R Did a great job and I will be doing more business with this company.



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Me and my wife were able to install it no problem. She read the instructions and I did the labor work! I would double check on how much you tighten the bolts down. Over all I gave it 4 stars only cuz I haven’t taken the rv out in July to test it against the heat.



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Easy installation



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Installation was straightforward and is cooling well. And it's quieter than my previous one. The only issue was that the documentation showing dimensions around the opening were wrong.



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it's a great family project everything was like they said it was the videos were helpful



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Only 4 stars because I just finished installing it tonight. Installation instructions were easy to follow and it fired right up once install was complete. If it still works good down the road I’ll give it 5 stars. Sure beats the $3,200 quote by an rv dealer to install one on my weekender horse trailer.



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

  • Will Older Advent Air Air Distribution Box Work with Newer Advent Air Low Profile
    Hey Ron, it wouldn't work because that is an older style air box and starting in 2025 the RV AC units had to switch to a different refrigerant. This means the lower vent assemblies had to change as well. This means you'd need a current kit like the part # ADV25SR which has an air box that is compatible with the new refrigerants.
    view full answer...
  • Will The AC Kit ADV25SR Replace A Dometic Penguin II On A 2007 Forest River Cedar Creek Silverback?
    Hi Nadine! The Advent Air Low Profile RV Air Conditioner System - Manual - 13,500 Btu - Black - R32 # ADV25SR will fit the standard 14" x 14" cut out your current Dometic Penguin II fit, so you are good to go! This is usually where I go into a whole thing about needing a completely new set up as the R32 coolant models aren't backwards compatible with the old R410a units, but the # ADV25SR is a full kit and you will not need any other parts to get it up and running. Was the one you are...
    view full answer...
  • Best Option for Installing a Stand Alone AC System in a RV Bedroom
    Hey Harry. The best option to install a low profile AC system for the bedroom of your Grand Design is with the Advent Air Low Profile RV Air Conditioner System item # ADV45SR in white or item # ADV25SR in black. These 13,500 Btu systems come with everything you need to get up and running. The Advent Air AC units are only 31" long x 24-15/16" wide x 10-1/8" tall. The included air distribution box has the controls, thermostat, and vents built into it. These kits also include a start capacitor...
    view full answer...
  • Can I Add a Heat Strip to a R32 Advent Air Conditioner System?
    Yes, you can Tom. The Electric Heat Strip for Advent Air RV Air Conditioners item # ADV34QR is exactly what you need for the Advent Air Low Profile RV Air Conditioner System item # ADV25SR, you were looking at. It'll draw 13.6 amps while being used. What kind of trailer do you have?
    view full answer...
  • Solution for Needing Replacement RV AC Unit for Dometic
    Hey Michael, we can help but we don't have any RV AC unit top units that are going to work with the air distribution box you have currently. At one point we thought the Advent Air top units worked with Dometic ADBs but that is not true. So you'd need to replace the entire system like with the # ADV25SR or see if Dometic could get you the upper unit you are in need of.
    view full answer...
  • Which Advent Air Low Profile AC Unit for Enclosed Trailer Converted to Camper
    Hey Blake, the kit you'd need to install an Advent Air Low Profile RV AC unit on the roof of your enclosed trailer would be the part # ADV25SR. This is designed for new installs like what you have and comes with the correct lower vent assembly you'd need. It does need 12 volt power like you mentioned.
    view full answer...
  • Replacement AC for Carrier 68RV14101A RV Unit
    Hey Jeffrey, thanks for reaching out! To replace your 13.5K Btu Carrier AC you'll need a whole new system, and I can make sure the one I recommend comes with the air distribution box that has the thermostat built into it. For your application I recommend the Advent Air Low Profile which comes in Black # ADV25SR as well as White # ADV45SR. This has the air distribution box with the thermostat and controls on it, so you'll be manually adjusting the settings near the ceiling. Do you like...
    view full answer...

Do you have a question about this RV Air Conditioner?


Info for this part was:

Employee Jameson C
Expert Research:
Jameson C
Employee Mary K
Updated by:
Mary K
Employee Wilson B
Updated by:
Wilson B
Employee Michael B
Updated by:
Michael B
Employee Amanda M
Edited by:
Amanda M
Employee Ashley K
Written by:
Ashley K

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