The Heating
Showdown.
Diesel or Gas? Webasto or Eberspächer? We break down the technical data to help you choose the right heat source for your off-grid build.
Quick Comparison
Key specs for the top 4 heaters in the UK market.
| Brand / Model | Fuel Source | Key Pros | Est. Price | |
|---|---|---|---|---|
| WebastoAir Top 2000 STC | Diesel | Altitude SensingUK SupportCompact | £1,145 | Technical Guide |
| EberspächerAirtronic S3 | Diesel | Stepless ControlSilent PumpCAN-bus | £1,245 | Technical Guide |
| PropexHS2000 | LPG Gas | Clean BurnLow MaintenanceSilent | £545 | Technical Guide |
| WhaleHeat Air | LPG / 230V | UnderslungSaves Internal SpaceDual Fuel | £945 | Technical Guide |
Diesel vs Gas
The first decision is fuel. **Diesel heaters** (Webasto/Eberspächer) are the favorite for high-mileage travelers because fuel is available at every gas station and they can tap directly into the vehicle's main tank.
**Gas heaters** (Propex/Whale) burn cleaner, requiring significantly less maintenance. They are also quieter and use less electrical power on startup. If you already have an LPG tank for your kitchen, gas heating is often the logical choice.
Altitude
If you're planning to cross the Alps, choose Webasto. Its automatic pressure sensing prevents carbon buildup above 1,500m.
Space
For small vans, Whale is unbeatable. Mounting the heater under the chassis saves an entire cupboard of internal space.
Refinement
Eberspächer's Airtronic S3 is the quietest heater on the market thanks to its stepless motor and damped fuel pump.
Value
The Propex HS2000 is the most affordable premium option. Simple, British-made, and incredibly reliable for weekenders.
Ready to Heat Your Build?
From professional diesel integration to space-saving underslung gas systems, we stock the entire range of European-made heating solutions.