Suburban SF-35VHQ (2588A)
The standard replacement for a 35,000 BTU Suburban SF furnace where the exterior service door stays.
Amazon $929.99$929.99
The Suburban SF-35VHQ (2588A) is the better RV furnace overall, rated 3.6 to 3.4. The Suburban SF-35VHQ (2588A) leads on value. The Suburban SF-35VHQ (2588A) costs $255.99 less ($929.99 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
Which should you buy?
- Choose the Suburban SF-35VHQ (2588A) for value ($26.57 per 1,000 BTU ($929.99, 35,000 BTU) vs $29.65 per 1,000 BTU ($1,185.98, 40,000 BTU)).
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-35VHQ (2588A) | Suburban SF-42VHFQ |
|---|---|---|
| Overall rating | 3.6/5 | 3.4/5 |
| Value 40% | 70 $26.57 per 1,000 BTU ($929.99, 35,000 BTU) | 61 $29.65 per 1,000 BTU ($1,185.98, 40,000 BTU) |
| Power draw 35% | 53 8 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-35VHQ (2588A) | Suburban SF-42VHFQ | |
|---|---|---|
| Heat and power | ||
| Input capacity | 35,000 BTU | 40,000 BTU |
| 12 V amp draw | 8 A | - |
| Discharge | Ducted | Ducted |
| Fit | ||
| Height | 7.5 in | 7.5 in |
| Weight | 29 lb | 28 lb |
| Warranty | ||
| Warranty | 2 years | 2 years |