For ducted RVs that want strong cooling plus electric heat from one rooftop unit, at a price close to the cool only model.
Amazon $1,379
The default big rooftop unit for a fifth wheel or motorhome that needs the most cooling a single 14 in opening can take.
- 15,000 BTUCooling
- 13.9 ARunning current
- Heat stripHeat
Price checked November 2, 2026. As an Amazon Associate we earn from qualifying purchases.
- 15,000 BTU and 320 CFM for long trailers and hot climates
- Strong airflow suits ducted systems
- Optional 5,600 BTU heat strip
- Ceiling assembly costs extra
- No soft start, so it can trip a small generator at start
- Tall medium profile shroud
The Coleman-Mach 15 family
Every Coleman-Mach 15 model we rank, smallest first. Ratings compare each against its own size.
| Model | Cooling | Rating | Price |
|---|---|---|---|
| Coleman-Mach 15 15,000 BTU (this one) | 15,000 BTU | 3.5/5 | $1,015.06 |
| Coleman-Mach 15 HP2 Heat Pump | 15,000 BTU | 3.1/5 | $1,262.59 |
How it scores
The rating comes from 5 measured or published factors, each scored 0-100 against fixed reference points for its size. How we rank explains each one.
Specifications
| Model number | 38204-066 |
|---|---|
| Cooling and power | |
| Cooling capacity | 15,000 BTU |
| Heat | Heat strip |
| Running current | 13.9 A |
| Soft start built in | No |
| Inverter compressor | No |
| Install | |
| Ceiling setup | Ducted or non-ducted |
| Ceiling assembly included | No |
| Height above roof | 13.8 in |
| Weight | 85 lb |
| App or remote monitoring | No |
| Noise and warranty | |
| Warranty | 2 years |
Alternatives in this size
For owners who want the most cooling from one roof opening with variable speed comfort and gentler starts on a generator.
Amazon $1,257.26A low-priced, complete 15,000 BTU unit for non-ducted trailers on shore power, with an electric heater for cool mornings.
Amazon $799.99Compare
Compare the Coleman-Mach 15 15,000 BTU with any other RV air conditioner →
More from Coleman-Mach: every Coleman-Mach product ranked.