---

---

Installing a marine hydronic system is the most effective way to achieve consistent, whole-boat warmth. Unlike air heaters, diesel boilers circulate heated liquid through a network of radiators or matrix heaters, providing a silent and steady heat source that mimics a domestic home. For liveaboard boaters on the UK canal network, these systems are often paired with a calorifier, ensuring constant hot water for showers and galleys during engine-off periods. You can find more information on the benefits of these systems in the Webasto Marine Heating technical guides.

---

Recommended Boiler Brands

Explore our specialist range of diesel-fired boilers from the world’s leading manufacturers:

Our Marine Diesel Boilers

See all our boat diesel boilers in no particular order below. This is a collection of compatible models across our range; for more detailed listings and technical specifications, please follow the main menu to our manufacturer-specific pages.

---

Safety/Regulatory: OFTEC and Canal & River Trust (CRT)

To maintain a valid Canal & River Trust (CRT) license, your vessel must meet the mandatory Boat Safety Scheme (BSS) standards. For diesel boilers, this requires high-standard fuel line integrity and lagged exhaust routing to prevent fire or carbon monoxide risks. We strongly recommend that all hydronic systems be designed and commissioned by an OFTEC certified technician to ensure compliance with British Standards, satisfy BSS examiners, and protect your vessel’s insurance.

---