Coleman-Mach 15 15,000 BTU
The default big rooftop unit for a fifth wheel or motorhome that needs the most cooling a single 14 in opening can take.
Amazon $1,015.06$1,015.06
The Coleman-Mach 15 15,000 BTU is the better RV air conditioner overall, rated 3.5 to 2.6. The Coleman-Mach 15 15,000 BTU leads on warranty and efficiency. The Dometic FreshJet 3 15,000 BTU costs $7.01 less ($1,008.05 vs $1,015.06).
Dometic FreshJet 3 15,000 BTU
#18 in Over 14,000 BTUFull review
A light, low-cost 15,000 BTU replacement for a Brisk II or another standard-profile unit when roof height is not a concern.
Amazon $1,008.05$1,008.05
Prices were last checked November 2, 2026 and are subject to change; the price and availability shown by the retailer at the time of purchase apply.
Which should you buy?
- Choose the Coleman-Mach 15 15,000 BTU for warranty (2-year warranty vs 1-year warranty) and efficiency (13.9 A running, 0.9 A per 1,000 BTU vs 16.2 A running, 1.1 A per 1,000 BTU).
Scores side by side
Each factor is scored 0-100 against the same fixed reference points for every over 14,000 BTU RV air conditioner; a clear win is highlighted. How we rank explains each one.
| Factor weight | Coleman-Mach 15 15,000 BTU | Dometic FreshJet 3 15,000 BTU |
|---|---|---|
| Overall rating | 3.5/5 | 2.6/5 |
| Value 30% | 65 $67.67 per 1,000 BTU ($1,015.06, 15,000 BTU) | 66 $67.20 per 1,000 BTU ($1,008.05, 15,000 BTU) |
| Efficiency 20% | 59 13.9 A running, 0.9 A per 1,000 BTU | 31 16.2 A running, 1.1 A per 1,000 BTU |
| Starting current 15% | 50 starting current not published (neutral score used) | 7 71 A to start |
| Noise 10% | 50 noise rating not published (neutral score used) | 50 noise rating not published (neutral score used) |
| Warranty 25% | 50 2-year warranty | 0 1-year warranty |
Specifications
| Coleman-Mach 15 15,000 BTU | Dometic FreshJet 3 15,000 BTU | |
|---|---|---|
| Cooling and power | ||
| Cooling capacity | 15,000 BTU | 15,000 BTU |
| Heat | Heat strip | No |
| Running current | 13.9 A | 16.2 A |
| Starting current | - | 71 A |
| Soft start built in | No | No |
| Inverter compressor | No | - |
| Install | ||
| Ceiling setup | Ducted or non-ducted | Ducted or non-ducted |
| Ceiling assembly included | No | No |
| Height above roof | 13.8 in | 14.4 in |
| Weight | 85 lb | 66 lb |
| App or remote monitoring | No | No |
| Noise and warranty | ||
| Warranty | 2 years | 1 year |
| Released | - | 2022-11 |