# Jacgood 12V Diesel Air Heater, 5KW-8KW, for Campervans

Source: https://www.ranked10.co.uk/home/best-diesel-heaters/jacgood-diesel-heater-5kw-8kw
Ranked #3 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: £69.69 (checked on Amazon UK on 2026-09-16)
- Amazon rating: 4.3 from 196 ratings
- Buy on Amazon: https://www.amazon.co.uk/dp/B0CH2L1G5M?tag=ranked10-21

The Jacgood diesel heater sits at number three in this guide. It is a 12V air heater for campervans, trucks, buses and boats at £69.69, rated 4.3 out of 5 from 196 Amazon ratings, and it is the cleanest example of the problem this guide keeps returning to: on a diesel heater listing, the kW figure is the number least worth trusting. The title calls it "5KW-8KW". The first bullet does not hedge at all and states "Heater power: 8KW". One product page, two answers, and nothing else in the listing settles which of them you get.

The fuel figures do not settle it either. The same bullet gives fuel consumption as 0.1-0.64 L/hour — a 6.4x spread from one end of a single heater's range to the other. The spec table then lists the heating method as "Radiant" and the heating element as "Radiant", which describes a panel heater rather than a diesel unit with a blower, and files the product under bedroom, home office and living room while the bullets sell it for truck cabs and engineering vehicles. The 4.3 average is solid, but it is built from 196 ratings in which 8 are one-star. Everything on this page is taken from the Amazon listing. We have not tested this heater.

## Specification

| Field | Value |
|---|---|
| Price | £69.69 |
| Customer rating | 4.3 out of 5 from 196 ratings (8 of them one-star) |
| Claimed heater power | 8KW in the first bullet; the title says 5KW-8KW |
| Fuel consumption | 0.1-0.64 L/hour |
| Rated voltage | 12V |
| Working temperature (heater) | -40°C to +50°C |
| Item weight | 6.36 kg |
| Heating method (as listed) | Radiant |

## Questions people ask

**What power is the Jacgood diesel heater?**

The listing gives two different answers. The product title says 5KW-8KW, and the first bullet says "Heater power: 8KW". Nothing else on the page says which one applies.

**How much fuel does it use?**

The listing states fuel consumption of 0.1-0.64 L/hour. That is a 6.4x spread between the lowest and highest figure quoted for the same heater.

**What voltage does it run on?**

12V, according to the rated voltage given in the Jacgood listing.

**Is it noisy?**

The listing says noise is reduced through blower speed control and lists "Noiseless" among the special features. One reviewer describes the Jacgood unit as much quieter than the heater it replaced.

**Can it be used indoors?**

The listing is contradictory. The bullets describe heating the cab of cars, buses, RVs, trucks and engineering vehicles, while the room type field lists bedroom, home office and living room, and the indoor/outdoor field says outdoor.

**What comes in the box?**

The listing says the heater arrives with a complete installation kit including all mounting screws, plus a remote control and an LCD panel, and advises reading the instructions before installation.