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  1. RV Air Conditioners
  2. Coleman-Mach
  3. Complete AC System
  4. 15000 Btu
  5. Ducted
  6. Single Zone
Coleman-Mach Signature Mach 15 RV Air Conditioner System - Ducted - 15,000 Btu - Textured Black
Coleman-Mach

Coleman-Mach Signature Mach 15 RV Air Conditioner System - Ducted - 15,000 Btu - Textured Black

Part Number: CM42RR
In Stock
$1,467.24
RV Air Conditioners
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Your old AC couldn't keep up. This ducted kit delivers powerful cooling through every vent, with matched components for a smooth install and the reliability to keep your RV comfortable season after season. Great Prices for the best rv air conditioners from Coleman-Mach. Coleman-Mach Signature Mach 15 RV Air Conditioner System - Ducted - 15,000 Btu - Textured Black part number CM42RR can be ordered online at etrailer.com or call 1-800-940-8924 for expert service.
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  • Reviews (3)
  • Q & A (0)
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Coleman-Mach RV Air Conditioners - CM42RR

Highlights

  • 15,000 Btu Cooling Capacity: High-output rooftop AC cools large RVs or quickly drops temps in smaller ducted setups.
  • Holds Up Over Time: Built with quality materials and secure joints to help it stay sealed and running season after season.
  • Complete System Upgrade: Includes a rooftop unit, air distribution box, and thermostat that all work together to keep you cool.
  • Direct or Ducted Airflow: Open louvers for cool air in the cabin or close them to send air through your ceiling ducts.
  • Heat-Ready Design: Supports optional 5,600 Btu heat strip for extra warmth on chilly mornings (sold separately).

Features to know about

A Matched Kit That Simplifies the Install

One of the biggest headaches in RV repairs is figuring out which parts are compatible. This kit takes that off your plate. The rooftop unit, air distribution box, and thermostat are made to work together, so installation is smoother and the setup more reliable. Whether you're doing the install yourself or paying someone else to do it, having everything in one kit makes the process faster and less stressful.

Cooling Power for Bigger Spaces

With 15,000 Btu of cooling power, this system moves air through your ceiling ducts to cool larger RVs or drop the temperature fast in smaller ones. You'll feel the temperature shift within minutes, not hours, so your RV stays comfortable even in the middle of summer.

Easy, Accessible Control at the Ceiling

The air distribution box gives you control right at ceiling level. Open the louvers for direct cooling into the cabin or close them to push air through your ducts. The slim, low-profile design leaves you with more overhead clearance inside, and the swing-open grille makes it easy to reach and wash the filter. No tools needed. Just pull, rinse, and snap it back into place.

Add Heat for Chilly Mornings

Sometimes it's not cold enough to run the furnace, but it's too chilly to be comfortable. This system is prepped for a 5,600 Btu heat strip (sold separately), which is a simple way to take the edge off on those in-between mornings. It's easy to install and helps your space warm up without the noise or power draw of a full furnace cycle.

Specs

Capacity:

  • 15,000 Btu per hour

Dimensions and Weight:

  • Overall: 38-3/16" long x 28-3/16" wide x 13-15/16" tall
  • Opening size: 14-1/4" long x 14-1/4" wide
  • Air distribution box: 20" long x 19" wide x 1-1/2" thick
  • Thermostat: 4" tall x 2-1/2" wide x 1" thick
  • Weight: 85 lbs

Power and Operation:

  • Voltage: 12V DC
  • Amperage (Cool): 13.9 amps
  • Amperage (Heat): 16 amps
  • Amperage (Desert): 18 amps
  • Refrigerant: R32 to meet 2025 EPA regulations

Color:

  • Air conditioner: textured black
  • Air distribution box: white
  • Thermostat: black

Warranty:

  • Air conditioner: 2-year limited
  • Air distribution box: 1-year limited
  • Thermostat: 1-year limited


38264-069 Coleman Mach Signature Mach 15 RV AC - 15K Btu - Textured Black

8430A633 Coleman Mach Chill Grill Air Distribution Box for Ducted RV ACs - White

9420A382 Coleman Mach Single-Zone Digital Wall-Mounted Thermostat with Plugs for RV ACs - Black




California residents: click here


Ratings & Reviews

4.3

3 reviews
Your old AC couldn't keep up. This ducted kit delivers powerful cooling through every vent, with matched components for a smooth install and the reliability to keep your RV comfortable season after season.

by:

Haven’t installed yet but the product came in properly.
Thanks



by:

E-trailer is the place to buy delivery purchasing everything all good the Coleman air conditioning rooftop no problems simple to install and works great



by:

The units were in great shape as they were delivered. when I was putting in my order the screen said Sunday delivery, when I submitted the order it changed to Monday, when I tracked the order it said Tuesday. It was Tuesday that it was delivered. that is the only negative thing about my order. everything else is as ordered. I did not realize I ordered the units with the control knobs but that was my mistake. I really needed the ones with the thermostat controls. If there is a kit to switch it from the knobs to the thermostat I would love to know what it is.


3
3

See what our Experts say about this Coleman-Mach RV Air Conditioners

  • Replacement for Coleman-Mach AC on Travel Trailer
    Hey Kyle! You can replace your old Coleman-Mach AC with one of the new ones. However, you will need to replace the thermostat and air distribution box as well. All of the new AC units use R32 refrigerant following the 2025 EPA guidelines so any old R410A components aren't compatible. We have 13,500 Btu or we have the 15k units if you want to upgrade. You can choose from the following based on color and ducted/ductless: -Coleman-Mach Signature Mach 3 RV AC System - Ductless - 13,500 Btu...
    view full answer...
  • Difference Between Coleman-Mach Roughneck Mach 15 and Signature Mach 15
    Hey Bill, great question! The Signature Mach 15 is your standard AC unit which is probably what you want. The Roughneck has a fortified interior making it ideal for off-road and heavy industrial vehicle applications. Basically it is made to take more of a beating. If you had an old carrier and it is wearing out from use over time (I'm guessing that is the case here) the Signature is what you want. If you have been off-roading with your trailer lately and it killed off the Carrier then...
    view full answer...
  • Replacement AC System For a 2014 Sunnybrook Raven 5th Wheel
    Hey David. AC replacements don't come as an easy process these days. There was a recent mandate that required all new AC units to start using the R32 refrigerant. Because of that change, older components are not compatible with the newer AC's. The only AC systems I have that would prevent any sort of ceiling work would be the Velit 2000U Under-Bench AC systems. They come in a 12V part # VE56QV, 24V part # VE36QV, and a 48V part # VE96QV. These are more geared for camper vans or smaller...
    view full answer...
  • Of Plug-In Replacement For Coleman Mach 15 AC Unit On 2016 Keystone Impact TT Toy Hauler
    Hello Shayne, thanks for reaching out. We do have an option for replacing your Coleman Mach 15 AC, but I am sorry to say there are no plug-and-play replacements for this. Reason being is all new RV AC units changed over to a new R32 refrigerant starting in 2025. These new units are not backwards compatible with old pre 2025 AC systems. So you will need to replace your rooftop unit, controller, distribution box and thermostat. For that, I recommend the following: - Coleman-Mach Signature...
    view full answer...
  • Can Furrion Chill HE Replacement AC Replace Coleman Mach 8 in 2020 Vanleigh Beacon
    Hi Jake; the Furrion Chill HE Replacement RV Air Conditioner for Coleman Setup # FR32PV is an old kit that is on its way out. We no longer recommend replacing just the AC unit, and can't guarantee this will work as a plug and play replacement. We have had customers in the past successfully swap them out, others have found the connector doesn't work, sometimes the systems don't work together, and occasionally mixing up the AC with other components burns out the air distribution box (ADB)....
    view full answer...
  • Can Coleman-Mach AC Replace Dometic Duo-Therm on 2014 Forest River Travel Trailer
    Hey Earl! Yes, the Coleman-Mach Signature Mach 15 AC system can replace your old Dometic Duo-Therm. These are new R32 refrigerant units (everything is as of 2025) so a complete replacement will be necessary. You can choose from the following based on ducted/ductless and the color: -Coleman-Mach Signature Mach 15 Air Conditioner System - Ductless - 15,000 Btu - Textured White # CM43RR -Coleman-Mach Signature Mach 15 Air Conditioner System - Ductless - 15,000 Btu - Polished White # CM93RR -Coleman-Mach...
    view full answer...

Do you have a question about this RV Air Conditioner?


Info for this part was:

Employee Mary K
Edited by:
Mary K
Employee Matthew S
Written by:
Matthew S
Employee Amanda M
Updated by:
Amanda M
Employee Michael B
Updated by:
Michael B
Employee Sabrina W
Updated by:
Sabrina W
Employee John S
Video Edited:
John S
Employee Andy C
Installed by:
Andy C
Employee Kevin C
Test Fit:
Kevin C
Employee Thomas T
Video by:
Thomas T

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