Hcalory UNIT 2 8kW Diesel Heater

Last updated: October 30, 2026

Hcalory UNIT 2 8kW Diesel Heater
3.2/5#12 of 36 in split diesel heaters
3.2

A well-featured split heater for van and RV builds that want automatic altitude handling and a big tank; expect about 3 kW of real heat, not 8.

  • 8 kW claimed (about 2.8 kW from its fuel burn)Heat output
  • 0.12 to 0.35 L/hFuel burn
  • None publishedType approval
  • 1 yearWarranty
Check price at Amazon$169.99

Price checked October 30, 2026. As an Amazon Associate we earn from qualifying purchases.

Pros
  • Adjusts for altitude by itself, so it keeps burning cleanly in the mountains
  • Holds the cabin temperature closely on its own
  • App, remote and panel control with timers
  • 15 L tank runs for days between refills
Cons
  • Sold as 8 kW, but its fuel burn supports about 2.8 kW
  • No published power draw or noise figures
  • Only a one-year warranty

How it scores

The rating comes from 6 measured or published factors, each scored 0-100 against fixed reference points for its type. How we rank explains each one.

Specifications

Model numberUNIT 2
Heating
Heat output (maker)8 kW claimed (about 2.8 kW from its fuel burn)
Fuel burn0.12 to 0.35 L/h
Fuel tank15 L
BuildSplit (installed)
Power
Supply12V/24V
Controls and safety
ThermostatYes
Automatic altitudeYes, to 16,400 ft
AppBluetooth
TimerYes
RemoteYes
Type approvalNone published
Build
Dimensions15.71 x 5.59 x 6.97 in
Weight16.8 lb
Warranty1 year
Released2026-07

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