$1,272.29
The Dometic DFMD30121 rates 2.6 among 25,000 to 30,000 BTU RV furnaces; the Dometic DFMDH35111 Essential rates 2.2 among 35,000 BTU and up ones. The Dometic DFMD30121 costs $128.45 less ($1,272.29 vs $1,400.74).
Prices were last checked November 9, 2026. Product prices and availability are accurate as of that date and are subject to change; the price and availability shown on Amazon or the retailer's site at the time of purchase apply. As an Amazon Associate we earn from qualifying purchases.
Dometic DFMDH35111 Essential
For a long trailer or motorhome that needs 35,000 BTU and smoother starts on a weak battery or generator.
Amazon $1,400.74$1,400.74
Scores side by side
These two sit in different size classes (25,000 to 30,000 BTU and 35,000 BTU and up), and each is scored against the reference points for its own class, so a rating says how well each does among its own size peers. How we rank explains each factor.
| Factor weight | Dometic DFMD30121 | Dometic DFMDH35111 Essential |
|---|---|---|
| Overall rating | 2.6/5 | 2.2/5 |
| Value 40% | 33 $42.41 per 1,000 BTU ($1,272.29, 30,000 BTU) | 38 $40.02 per 1,000 BTU ($1,400.74, 35,000 BTU) |
| Power draw 35% | 50 12 V amp draw not published (neutral score used) | 14 11.1 A running, 0.3 A per 1,000 BTU |
| Warranty 25% | 0 warranty not published, scored as none | 0 warranty not published, scored as none |
Specifications
| Dometic DFMD30121 | Dometic DFMDH35111 Essential | |
|---|---|---|
| Heat and power | ||
| Input capacity | 30,000 BTU | 35,000 BTU |
| 12 V amp draw | - | 11.1 A |
| Discharge | Ducted | Ducted |
| Fit | ||
| Height | - | 7 in |
| Weight | - | 33.5 lb |