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, value and efficiency. The Coleman-Mach 15 15,000 BTU costs $314.93 less ($1,015.06 vs $1,329.99).
Dometic FreshJet 5 15,000 BTU
#19 in Over 14,000 BTUFull review
For larger trailers and motorhomes that need 15,000 BTU in a low profile, and for replacing a Penguin II High Capacity.
Amazon $1,329.99$1,329.99
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), value ($67.67 per 1,000 BTU ($1,015.06, 15,000 BTU) vs $88.67 per 1,000 BTU ($1,329.99, 15,000 BTU)) and efficiency (13.9 A running, 0.9 A per 1,000 BTU vs 15.1 A running, 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 5 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) | 35 $88.67 per 1,000 BTU ($1,329.99, 15,000 BTU) |
| Efficiency 20% | 59 13.9 A running, 0.9 A per 1,000 BTU | 44 15.1 A running, 1 A per 1,000 BTU |
| Starting current 15% | 50 starting current not published (neutral score used) | 33 57 A to start |
| Noise 10% | 50 noise rating not published (neutral score used) | 80 59 dBA rated inside |
| Warranty 25% | 50 2-year warranty | 0 1-year warranty |
Specifications
| Coleman-Mach 15 15,000 BTU | Dometic FreshJet 5 15,000 BTU | |
|---|---|---|
| Cooling and power | ||
| Cooling capacity | 15,000 BTU | 15,000 BTU |
| Heat | Heat strip | Heat strip |
| Running current | 13.9 A | 15.1 A |
| Starting current | - | 57 A |
| Soft start built in | No | No |
| Inverter compressor | No | No |
| Install | ||
| Ceiling setup | Ducted or non-ducted | Ducted or non-ducted |
| Ceiling assembly included | No | No |
| Height above roof | 13.8 in | 10.5 in |
| Weight | 85 lb | 95 lb |
| App or remote monitoring | No | No |
| Noise and warranty | ||
| Noise | - | 59 dBA |
| Warranty | 2 years | 1 year |
| Released | - | 2025 |