KingRVer HF35-E 35,000 BTU
The cheapest 35,000 BTU furnace per BTU for a 28 to 38 ft trailer, on trust in a new brand.
Amazon $599.97$599.97
The KingRVer HF35-E 35,000 BTU is the better RV furnace overall, rated 3.5 to 3.4. The KingRVer HF35-E 35,000 BTU leads on value. The KingRVer HF35-E 35,000 BTU costs $586.01 less ($599.97 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 KingRVer HF35-E 35,000 BTU for value ($17.14 per 1,000 BTU ($599.97, 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 | KingRVer HF35-E 35,000 BTU | Suburban SF-42VHFQ |
|---|---|---|
| Overall rating | 3.5/5 | 3.4/5 |
| Value 40% | 100 $17.14 per 1,000 BTU ($599.97, 35,000 BTU) | 61 $29.65 per 1,000 BTU ($1,185.98, 40,000 BTU) |
| Power draw 35% | 50 12 V amp draw not published (neutral score used) | 50 12 V amp draw not published (neutral score used) |
| Warranty 25% | 0 warranty not published, scored as none | 50 2-year warranty |
Specifications
| KingRVer HF35-E 35,000 BTU | Suburban SF-42VHFQ | |
|---|---|---|
| Heat and power | ||
| Input capacity | 35,000 BTU | 40,000 BTU |
| Airflow | 320 CFM | - |
| Discharge | - | Ducted |
| Fit | ||
| Height | 8 in | 7.5 in |
| Weight | - | 28 lb |
| Warranty | ||
| Warranty | - | 2 years |