Coleman vs Webasto: Diesel Heaters for UK Van Life

Coleman Portable Heaters vs Webasto Permanent Installations

The Coleman vs Webasto comparison is not really a direct competition — they serve different purposes. A Coleman is a portable, kerosene-burning convective heater. A Webasto is a permanent, diesel-fired hot air system that integrates with your van's fuel tank. This guide explains which one suits your setup.

Coleman: Portable Heater

Coleman makes portable catalytic and convective heaters that run on kerosene, unleaded petrol, or diesel. They are self-contained units that sit on your table or floor and heat the surrounding space by convection. The Coleman SportCat (about £80) and the bigger Coleman BlackCat (about £100) are the most common models.

How it works — You fill the internal tank with fuel, light the burner, and the catalytic element produces heat without a visible flame. The heat output is about 1-2kW, which is enough for a small van.

Pros:

• No installation required — fill it and light it
• Can be used outside the van (tent, awning, beach)
• No power draw — no battery needed
• Cheap — £80-150 for the heater
• Portable — take it out in summer

Cons:

• Needs ventilation — produces CO2 and uses oxygen. A roof vent must be open
• Fuel smell — kerosene has a distinctive smell when burning and when filling
• Condensation — the combustion process adds moisture to the van air
• Less heat output than a diesel heater (1-2kW vs 2-5kW)
• Not thermostatic — you control the heat by adjusting the fuel flow
• Fuel availability — kerosene is less common than diesel at filling stations

Webasto: Permanent Diesel Heater

Webasto makes permanently installed diesel heaters that connect to your van's fuel tank and distribute hot air through ductwork. The Webasto Air Top 2000 STC (2kW) is the most popular for campervans. Installation costs vary (£300-600 for the unit, plus professional installation).

How it works — Burns diesel from the vehicle's tank in a sealed combustion chamber. Air from inside the van is blown over a heat exchanger and distributed through ducts to exit vents in different areas of the van.

Pros:

• Sealed combustion — no moisture or fumes in the van. Intake air from outside, exhaust outside
• Thermostatic — set your temperature and it maintains it
• Silent — quieter than the Chinese alternatives
• Reliable — Webasto and Eberspacher are the premium brands for good reason
• Proper heat — 2kW is plenty for a panel van
• Low power draw — about 0.5-3A depending on fan speed

Cons:

• Requires installation — holes in the floor, fuel line, electrical wiring, ducting
• Expensive — £600-1,000 installed
• Permanent — cannot be removed easily
• Annual maintenance — needs a service (burn off cycle, glow plug check)

Chinese Diesel Heaters (Alternative)

Chinese diesel heaters (Vevor, Autoterm, Planar, generic) cost £100-150 and work on the same principle as Webasto. They are significantly cheaper and many van lifers have good experiences with them. Reliability varies — some last years, some fail in the first season. The main issues are poor quality control on controllers, glow plugs, and fuel pumps. For the price, many people buy two and keep one as a spare.

Comparison Summary

Verdict

Choose Coleman if: You need a portable heater for occasional cold nights, you want to use it outside, you do not want to install a permanent system, and you are on a tight budget. Keep a CO alarm and a roof vent open.

Choose Webasto if: You are building a full-time van, you want silent, thermostatic heat without condensation or fumes, and you can afford the installation cost.

Choose Chinese diesel if: You want a permanent install but cannot justify £600-1,000. Accept that you might need to replace parts or the whole unit sooner than with a premium brand.

For full-time UK winter van life, a permanent diesel heater (Webasto or Chinese) is the better long-term solution. The Coleman works well for weekend trips or as a backup.