A diesel heater unit professionally mounted in a boat's technical locker with high-temperature exhaust lagging and marine-grade ducting.

Professional Diesel Heater Installation: Safety, Compliance, and Comfort

ualified Boat Safety Scheme (BSS) examiner for inland waterway vessel inspections
Gas Safe Registered engineer for marine LPG gas installations and safety certificates
OFTEC certified technician for marine diesel heating and oil-fired appliance servicing

While the appeal of a warm cabin is universal, the process of a diesel heater installation is a complex engineering task. Dealing with combustible fuel, high-temperature exhausts, and 12V electrical integration requires a professional touch to ensure your vessel remains both safe and insurable.

As OFTEC-certified marine engineers, we specialise in high-quality installations that meet and exceed the rigorous standards of the Boat Safety Scheme (BSS).


Why Professional Installation is Essential

Installing a marine diesel heater is not a DIY task. An improper fitting introduces several critical risks to your vessel and crew:

  • Carbon Monoxide (CO) Safety: A leak in the exhaust system can allow odourless, deadly CO gas into your living space. We ensure every joint is 100% gas-tight.
  • Fire Prevention: Incorrectly fused wiring or undersized cables are major fire hazards. We use only high-specification marine electrical components and vibration-resistant fittings.

Our Installation Standards

Every installation we perform follows a strict safety protocol designed for the harsh marine environment:

  1. System Placement: We identify the optimal location for heat distribution while ensuring the unit is mounted on a secure, vibration-dampened platform.
  2. Exhaust Engineering: We utilise high-temperature lagging and marine-grade skin fittings to manage the 300°C+ exhaust gases safely.
  3. Fuel Integration: We establish a safe, leak-proof supply from your tank using only specified marine-grade diesel appliances and fittings.
A close-up technical shot of a marine diesel heater exhaust skin fitting with silver heat-resistant lagging and stainless steel clamps, installed to BSS standards.
Professional lagging and high-grade stainless steel fittings are essential to manage the intense heat of a diesel exhaust system safely.

Choosing the Right System

Matching the heater’s power output (kW) to your boat’s volume is critical to prevent “coking” or carbon buildup.

Heater ModelPower OutputBest For
Webasto Air Top 2000 STC2kWSmall Cruisers (Up to 40ft)
Autoterm Air 4D4kWMid-Sized Narrowboats (40-60ft)
Webasto Air Top Evo 555.5kWLarge Widebeams & Liveaboards

Get a Technical Quote

Ready to transform your boat with a safe, professionally installed heating system? Our team is available for installations across the UK canal network.