Fogatti RFS20A0B 20,000 BTU
For a van, truck camper or small trailer where low battery draw outweighs raw heat.
Amazon $899.99$899.99
The Fogatti RFS20A0B 20,000 BTU is the better RV furnace overall, rated 3.0 to 1.8. The Fogatti RFS20A0B 20,000 BTU leads on power draw. The Fogatti RFS20A0B 20,000 BTU costs $51.19 less ($899.99 vs $951.18).
Prices were last checked November 4, 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.
Suburban SF-20FQ (2551A)
A like-for-like replacement for an older 20,000 BTU Suburban SF furnace in a small trailer.
Amazon $951.18$951.18
Which should you buy?
- Choose the Fogatti RFS20A0B 20,000 BTU for power draw (2.9 A running, 0.1 A per 1,000 BTU vs 7 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 under 25,000 BTU RV furnace; a clear win is highlighted. How we rank explains each one.
| Factor weight | Fogatti RFS20A0B 20,000 BTU | Suburban SF-20FQ (2551A) |
|---|---|---|
| Overall rating | 3.0/5 | 1.8/5 |
| Value 40% | 29 $45 per 1,000 BTU ($899.99, 20,000 BTU) | 24 $47.56 per 1,000 BTU ($951.18, 20,000 BTU) |
| Power draw 35% | 89 2.9 A running, 0.1 A per 1,000 BTU | 0 7 A running, 0.3 A per 1,000 BTU |
| Warranty 25% | 0 1-year warranty | 0 warranty not published, scored as none |
Specifications
| Fogatti RFS20A0B 20,000 BTU | Suburban SF-20FQ (2551A) | |
|---|---|---|
| Heat and power | ||
| Input capacity | 20,000 BTU | 20,000 BTU |
| 12 V amp draw | 2.9 A | 7 A |
| Airflow | - | 300 CFM |
| Discharge | Direct discharge | Ducted |
| Fit | ||
| Height | 11.3 in | 7.5 in |
| Weight | 25.7 lb | 29 lb |
| Warranty | ||
| Warranty | 1 year | - |