The best RV furnaces at a checked price under $800.
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.
Best RV Furnaces Under $800: 25,000 to 30,000 BTU
- Suburban NT-30SP#1 of 5Full review
For a replacement where the old NT-series furnace sat in a deep cabinet and low amp draw matters.
Amazon $697.65$697.6530,000 BTU5.5 A345 CFM - KingRVer HF30-E 30,000 BTU#2 of 5Full review
A budget 30,000 BTU complete furnace for a 24 to 33 ft trailer.
Amazon $649.99$649.9930,000 BTU-260 CFM - Fogatti RF030A0N 30,000 BTU#3 of 5Full review
A low-priced 30,000 BTU furnace for a budget replacement.
Amazon $679.99$679.9930,000 BTU-260 CFM - KingRVer HF25-E 25,000 BTU#4 of 5Full review
A budget 25,000 BTU complete furnace for a 20 to 28 ft trailer.
Amazon $599.99$599.9925,000 BTU-240 CFM - Fogatti RF02580N 25,000 BTU#5 of 5Full review
The budget 25,000 BTU pick for a smaller trailer, if you accept an unproven brand.
Amazon $699.99$699.9925,000 BTU-240 CFM
Best RV Furnaces Under $800: 35,000 BTU and up
- KingRVer HF35-E 35,000 BTU#1 of 3Full review
The cheapest 35,000 BTU furnace per BTU for a 28 to 38 ft trailer, on trust in a new brand.
Amazon $599.97$599.9735,000 BTU-320 CFM - Fogatti RF035A0N 35,000 BTU#2 of 3Full review
A low-priced 35,000 BTU furnace with variable output for a cold-weather trailer.
Amazon $699.99$699.9935,000 BTU-320 CFM - Fogatti RF035AR 35,000 BTU#3 of 3Full review
The ducted version of the Fogatti 35,000 BTU furnace.
Amazon $699.99$699.9935,000 BTU-320 CFM
