# SHAVINGFUN 12V 5 kW Split Diesel Air Heater, 9 L Tank

Source: https://www.ranked10.co.uk/home/best-diesel-heaters/12v-5kw-diesel-air-heater
Ranked #6 in "Best Diesel Heaters 2026: 10 Ranked, and Why the kW Claims Don't Add Up": https://www.ranked10.co.uk/home/best-diesel-heaters

- Price: £67.99 (checked on Amazon UK on 2026-09-16)
- Amazon rating: 4.1 from 141 ratings
- Buy on Amazon: https://www.amazon.co.uk/dp/B0CB3SJ9JM?tag=ranked10-21

The 12V 5KW Diesel Air Heater is number six in this guide. It is a split diesel heater: the tank and pump sit away from the unit that heats the cabin, and it is sold with an LCD display, a remote control and a muffler for £67.99, with 4.1 stars from 141 ratings. The listing quotes a working range of -40°F to 104°F and a 36 x 26 x 20 cm unit weighing 6.11 kg.

The fuel numbers are where this listing gets slippery. The title promises a 9L tank; one of the product bullets describes the same heater as having a 10L fuel tank. Neither figure matches the 7.33 litres the buyer in the review below reports actually fitting into the tank that arrived. The bullet also quotes 0.18-0.53 L/H fuel consumption — the identical range the guide flags on the LF Bros 5 kW unit — and a heat output of 4,700-17,000 BTU, a spread of more than three and a half times sitting under one flat 5 kW claim. Worth knowing before you buy: the brand field on the listing reads SHAVINGFUN, a name that appears nowhere in the product title. Everything on this page is taken from the Amazon listing, not from a heater we bought and ran.

## Specification

| Field | Value |
|---|---|
| Price | £67.99 |
| Rating | 4.1 out of 5 stars from 141 ratings |
| Brand (as listed) | SHAVINGFUN, which does not appear in the product title |
| Claimed output | 5 kW in both the title and the bullet |
| Fuel tank (as listed) | 9L in the title, 10L in the bullet |
| Fuel consumption | 0.18-0.53 L/H |
| Heat output (as listed) | 4,700-17,000 BTU |
| Dimensions and weight | 36 x 26 x 20 cm; 6.11 kg |

## Questions people ask

**What size fuel tank does the 12V 5KW Diesel Air Heater have?**

The listing gives two different answers: the title says 9L and a product bullet says a 10L fuel tank. Both figures appear on the same page.

**How much fuel does it use?**

The listing quotes fuel consumption of 0.18-0.53 L/H, which is not the same as a single steady figure.

**What heat output does the listing claim?**

A 5 kW heater, and in the bullet a range of 4,700-17,000 BTU. The bottom of that range is under a third of the top of it.

**Does it come with a remote control?**

Yes. The listing says the heater has an intelligent LCD display and a remote control, and that the timer and thermostat can be set automatically or manually through the LCD.

**What safety features are listed?**

Overheat, short circuit, overcurrent, overvoltage and reverse connection protection, in a heat-resistant case, according to the listing.

**What temperatures can it work in?**

The listing quotes a working temperature of -40°F to 104°F.