LF Bros Split T3 5kW Diesel Heater
#25 in SplitFull review
A basic 5 kW split kit for truck, RV and boat installs, with a timer but no thermostat.
Amazon $189.99$189.99
The LF Bros Split T3 5kW Diesel Heater is the better diesel heater overall, rated 2.9 to 2.8. The LF Bros Split Pro 5kW Diesel Heater wins on controls and safety. The LF Bros Split T3 5kW Diesel Heater costs $260 less ($189.99 vs $449.99).
LF Bros Split Pro 5kW Diesel Heater
#30 in SplitFull review
A quieter 5 kW split heater with a thermostat and plateau mode for van and RV builds, at a premium over basic kits.
Amazon $449.99$449.99
Prices were last checked October 30, 2026 and are subject to change; the price and availability shown by the retailer at the time of purchase apply.
Which should you buy?
- Choose the LF Bros Split Pro 5kW Diesel Heater for controls and safety (holds a set temperature, timer vs timer; fixed levels only).
Scores side by side
Each factor is scored 0-100 against the same fixed reference points for every split diesel heater; a clear win is highlighted. How we rank explains each one.
| Factor weight | LF Bros Split T3 5kW Diesel Heater | LF Bros Split Pro 5kW Diesel Heater |
|---|---|---|
| Overall rating | 2.9/5 | 2.8/5 |
| Value 25% | 87 $38 per kW ($189.99, 5 kW) | 50 no credible heat rating (neutral score used) |
| Type approval 20% | 0 no type approval published | 0 no type approval published |
| Controls and safety 15% | 43 timer; fixed levels only | 72 holds a set temperature, timer |
| Power draw 15% | 50 power draw not published (neutral score used) | 50 power draw not published (neutral score used) |
| Warranty 15% | 0 1-year warranty | 0 1-year warranty |
| Low setting 10% | 50 down to 1.4 kW | 50 lowest setting not published (neutral score used) |
Specifications
| LF Bros Split T3 5kW Diesel Heater | LF Bros Split Pro 5kW Diesel Heater | |
|---|---|---|
| Heating | ||
| Heat output (maker) | 5 kW | 5 kW |
| Lowest output | 1.4 kW | - |
| Fuel burn | 0.18 to 0.53 L/h | - |
| Fuel tank | 10 L | 10 L |
| Build | Split (installed) | Split (installed) |
| Power | ||
| Supply | 12V | 12V |
| Controls and safety | ||
| Thermostat | No | Yes |
| Timer | Yes | Yes |
| Type approval | None published | None published |
| Build | ||
| Dimensions | 14.9 x 5.6 x 5.9 in | - |
| Weight | - | 9.2 lb |
| Warranty | 1 year | 1 year |