Suburban SF-42VHQ (2592A)
For big fifth wheels and motorhomes that need a single large furnace.
Amazon $1,138.76$1,138.76
The Suburban SF-42VHQ (2592A) is the better RV furnace overall, rated 3.5 to 3.4. The Suburban SF-42VHQ (2592A) costs $47.22 less ($1,138.76 vs $1,185.98).
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-42VHFQ
For a 40,000 BTU furnace in an RV with no exterior door and a long duct run.
Amazon $1,185.98$1,185.98
Scores side by side
Each factor is scored 0-100 against the same fixed reference points for every 35,000 BTU and up RV furnace; a clear win is highlighted. How we rank explains each one.
| Factor weight | Suburban SF-42VHQ (2592A) | Suburban SF-42VHFQ |
|---|---|---|
| Overall rating | 3.5/5 | 3.4/5 |
| Value 40% | 64 $28.47 per 1,000 BTU ($1,138.76, 40,000 BTU) | 61 $29.65 per 1,000 BTU ($1,185.98, 40,000 BTU) |
| Power draw 35% | 54 9 A running, 0.2 A per 1,000 BTU | 50 12 V amp draw not published (neutral score used) |
| Warranty 25% | 50 2-year warranty | 50 2-year warranty |
Specifications
| Suburban SF-42VHQ (2592A) | Suburban SF-42VHFQ | |
|---|---|---|
| Heat and power | ||
| Input capacity | 40,000 BTU | 40,000 BTU |
| 12 V amp draw | 9 A | - |
| Discharge | Ducted | Ducted |
| Fit | ||
| Height | 7.5 in | 7.5 in |
| Weight | 35.6 lb | 28 lb |
| Warranty | ||
| Warranty | 2 years | 2 years |