Suburban SF-25Q (2556A)
A like-for-like replacement for a 25,000 BTU Suburban SF furnace in a mid-size trailer.
Amazon $913.73$913.73
The Suburban SF-25Q (2556A) is the better RV furnace overall, rated 2.5 to 2.1. The Suburban SF-25Q (2556A) leads on value and power draw. The Suburban SF-25Q (2556A) costs $273.64 less ($913.73 vs $1,187.37).
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.
$1,187.37
Which should you buy?
- Choose the Suburban SF-25Q (2556A) for value ($36.55 per 1,000 BTU ($913.73, 25,000 BTU) vs $47.49 per 1,000 BTU ($1,187.37, 25,000 BTU)) and power draw (7 A running, 0.3 A per 1,000 BTU vs 7.5 A running, 0.3 A per 1,000 BTU).
Scores side by side
Each factor is scored 0-100 against the same fixed reference points for every 25,000 to 30,000 BTU RV furnace; a clear win is highlighted. How we rank explains each one.
| Factor weight | Suburban SF-25Q (2556A) | Dometic DFMD25111 |
|---|---|---|
| Overall rating | 2.5/5 | 2.1/5 |
| Value 40% | 45 $36.55 per 1,000 BTU ($913.73, 25,000 BTU) | 24 $47.49 per 1,000 BTU ($1,187.37, 25,000 BTU) |
| Power draw 35% | 30 7 A running, 0.3 A per 1,000 BTU | 22 7.5 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
| Suburban SF-25Q (2556A) | Dometic DFMD25111 | |
|---|---|---|
| Heat and power | ||
| Input capacity | 25,000 BTU | 25,000 BTU |
| 12 V amp draw | 7 A | 7.5 A |
| Airflow | 300 CFM | - |
| Discharge | Ducted | Ducted |
| Fit | ||
| Height | 7.5 in | 7.4 in |
| Weight | - | 33.5 lb |