TJHSM 5kW Diesel Heater
#23 in SplitFull review
A low cost 5 kW split kit for DIY truck and RV installs, sold with almost no published specs or warranty.
Amazon $83.28$83.28
The TJHSM 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 TJHSM 5kW Diesel Heater costs $366.71 less ($83.28 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).
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 | TJHSM 5kW Diesel Heater | LF Bros Split Pro 5kW Diesel Heater |
|---|---|---|
| Overall rating | 2.9/5 | 2.8/5 |
| Value 25% | 50 no credible heat rating (neutral score used) | 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% | 57 timer | 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% | 50 warranty not published (neutral score used) | 0 1-year warranty |
| Low setting 10% | 50 lowest setting not published (neutral score used) | 50 lowest setting not published (neutral score used) |
Specifications
| TJHSM 5kW Diesel Heater | LF Bros Split Pro 5kW Diesel Heater | |
|---|---|---|
| Heating | ||
| Heat output (maker) | 5 kW | 5 kW |
| Fuel tank | - | 10 L |
| Build | Split (installed) | Split (installed) |
| Power | ||
| Supply | 12V | 12V |
| Controls and safety | ||
| Thermostat | - | Yes |
| Timer | Yes | Yes |
| Remote | Yes | - |
| Type approval | None published | None published |
| Build | ||
| Weight | - | 9.2 lb |
| Warranty | - | 1 year |