Gewna 8KW All-in-One Diesel Air Heater vs LF Bros 5KW Diesel Heater

The Gewna is the stronger pick for most shoppers: it delivers more heat, runs longer on a tank, and supports 12V, 24V, 110V and 240V, so it fits trucks, RVs and home backup use. The LF Bros is the better-built unit, with an aluminium body, a 301 stainless combustor, E49 (ECE R122) and CE certification, and a smaller footprint. Owners of both types report the same trade-offs: strong dry heat, but noticeable pump ticking and a real need for proper exhaust routing.

• Choose the Gewna if you want maximum heat output, long overnight runs and multi-voltage flexibility for an RV, truck or workshop.
• Choose the LF Bros if you want a compact, certified all-in-one with a stainless combustor and a programmable timer for an overland or garage build.