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Electric Heat Strip for Advent Air RV Air Conditioners - 5,500 BTU

Electric Heat Strip for Advent Air RV Air Conditioners - 5,500 BTU

Item # ACMHD
Our Price: $74.37
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Shipping Weight: 3 lbs
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This electric heat strip works with your AC unit (sold separately) to remove the chill from your RV or camper on cold or frosty mornings. Power cord and mounting hardware are included for easy, plug-and-play installation. 1-800-940-8924 to order Advent Air accessories and parts part number ACMHD or order online at Free expert support on all Advent Air products. Great prices and Fastest Shipping for Electric Heat Strip for Advent Air RV Air Conditioners - 5,500 BTU. Accessories and Parts reviews from real customers.
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  • Reviews (116)
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Advent Air Accessories and Parts - ACMHD

  • RV Air Conditioners
  • Heat Strip
  • Advent Air

This electric heat strip works with your AC unit (sold separately) to remove the chill from your RV or camper on cold or frosty mornings. Power cord and mounting hardware are included for easy, plug-and-play installation.


  • Electric heat strip removes the chill on cold or frosty mornings in your RV or camper
    • Works with Advent Air AC units ACM135, ACM135B, ACM150, and ACM150B (sold separately)
    • Works with Advent Air air distribution box ACDB (sold separately)
  • Easy plug-and-play installation with included 30" power cord
  • Mounting hardware is included


  • Capacity: 5,500 Btu per hour
  • Overall dimensions: 15-3/4" long x 2-3/4" wide x 4-3/4" tall
  • 1-Year warranty

How It Works

Paired with your AC unit (sold separately), this electric heat strip keeps your RV warm on a cold or frosty morning. It is operated with the control dial on the air distribution box (sold separately). After you turn the dial to the heat setting, the compressor will shut off, and the fan will blow air over the heater and into your RV. When the optimal temperature has been reached, turn the dial to a fan or cooling setting. Please also note that the heat strip only has one temperature setting and cannot be controlled by the thermostat.

Simple Installation

Advent Air Electric Heat Strip

To install, mount the heat strip to the evaporator inside the AC unit with the included mounting screws. The heat strip has easy, plug-and-play installation with the supplied 30" power cord.

ACMHD Advent Air Electric Heat Strip for RV Air Conditioners - 5,500 Btu

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Customer Satisfaction Score:

Customer Reviews

Electric Heat Strip for Advent Air RV Air Conditioners - 5,500 BTU - ACMHD

Average Customer Rating:  4.5 out of 5 stars   (115 Customer Reviews)

This electric heat strip works with your AC unit (sold separately) to remove the chill from your RV or camper on cold or frosty mornings. Power cord and mounting hardware are included for easy, plug-and-play installation.


Was hoping this would produce at least a bit of heat. Installed and then tested it while temp outside was 30F. First it drew more than 15amps, had to start the generator in order to produce enough amps to keep it running. After 20 minutes no real heat, so kinda sad. However customer service here is great.
Wish it was better, but hay not always what you expect, but I tried.



Still working fine, not as much heat as I was hoping however it helps in not having to use propane as much.


I received the heater unit & promptly installed it. Being a competent mechanical type, I found the installation to be straightforward but a bit painful. On the left side (w/elect terminals) was a slot in the protective metal screening for the purpose of using a screwdriver to install the 2 short screws. Difficulty came when trying to weave the screwdriver through terminal ends and wires while trying to guide the screw into the bracket slots.
On the opposite end, there were no electrical terminals, but neither was there a slot in the screening. This required a small diameter Phillips screwdriver to get through the metal screening. In my case it took way longer than one would anticipate to install 4 small screws. It was all good in the end & I am pleased with the product, how it is integrated into the a/c unit and how it functions.
It may be worth mentioning in the video & written instruction, that the HEAT position on the air distribution box also provides power to the fan for heat circulation. I did not see or hear that mentioned anywhere and caused me to question it. By trial, I discovered it's functionality.

Doug C.


Can this be installed as a standalone unit?

Etrailer Expert

Heather A.


I do have an option for you but the heat strip cannot be used as a standalone heater for your trailer. It will need to be plugged into an Advent AC unit (ACM135, ACM135B, ACM150, or ACM150B). If you have one of those units the heat strip will allow you to set your air distribution box to only blow warm air. It sounds like you need a standalone trailer heater like part # CAM57341.

Charles A.


Advent ac unit works extremely well. I have two that are installed in vintage camping trailers as replacements for the 1970s OEM units. They installed easily & function flawlessly. I would not hesitate to buy yet another if the occassion arises.


Very easy to install, just plug and play. I wish it were a bit quieter but all on all an improvement over the ac unit it replaced.


Works great in an enclosed area like an RV riser area. Pretty easy to install with only a couple of tools.


Good product for keeping the chill off in the mornings.


Always get knowledgeable people at etra iler


Doesn't work very well. Very disappoint ed


I can't rate this until I receive my air box to check it out.

Etrailer Expert

Katrina D.


I have looked into your order and it looks like the airbox should have arrived to you by now. I would love to hear your updated feedback on that as well as this heat strip.


Haven’t had an opportunity to test in unit trying to troubleshoot cooling


A very good air conditioner with a very poor design and quality With a few modifications of my own it works very good now


New heater kit for new AC and was another exact replacement and easy install.

by: 09/20/2023

Plug and play easy work


Simple install!!!


We had not bought all we needed the first time and the direction and support to fulfill what we needed was wonderful. your personal were a great help and friendly professional. they new what they were doing. Thank You!


Great product. Install is easy. Took top cover off removed chamber cover. Installed heat strip with the 4 provided screws put covers back on. Went inside plugged in the provided plug turned it on works great. Whole thing Took 15 minutes.


Product delivered in a timely manner and as advertised


I installed two of these strips. Installation is incredibly simple. You can get this done in 30 minutes or less with just a screwdriver. The one I installed above the main cabin keeps the RV comfortable. My bedroom area is signicantly smaller and the unit that services it keeps it quite warm. I usually have to cycle the fan and heat option to keep the temperature where I like. The Advent heat strip is a good option. For reference, I am living full time in my RV.


Fairly easy to install and seems to work. Too hot now to tell.


Would not work on this ac unit


Delivered as said


Takes the chill off


Seems to work but it's summer so we will find out this fall. A+++ install


Installed in unit but I did not realize it only works with the non ducted system. I have a ducted system.


Works as it should! Excellent service from E-trailer as always. Thank you!


I purchased this heat strip for the Advent AC135 rv rooftop air conditioner. The ACHD is the heat strip that is recommended for my unit but has been discontinued. The electrical specs for the ACHD and the ACMHD are the same, as is the width and height. I was able to match the curbside holes on the evaporator with the heat strip flange precisely. I mounted the heat strip and used the roadside heat-strip flange as a guide to drill two holes for a solid mount. Pretty simple after I clipped away a small portion of the cage that surrounds the heat strip. Plugged it in and, voila, heat. Works great. Sorry, no pics. And I don’t want to remove the shroud again if I don’t have to, as putting that back on was the hardest part of the job.

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