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  1. Home
  2. Air Heaters
  3. Marine Air Heater Kits
  • Eberspacher Airtronic D4R Recreational 12v Diesel Heater Kit

    In Stock

    , Choose Options

    Espar Airtronic AM2 D4R Diesel 12V Heater Kit with EasyStart Pro Controller

    (2)

    379,725.77JPY
  • Eberspacher / Espar M3 D4R Airtronic 12V Marine Kit

    In Stock

    , Choose Options

    Espar Airtronic M3 D4R Diesel 12V Marine Heater 3 Outlet Kit with EasyStart Pro Controller

    (0)

    545,384.76JPY
  • Espar Airtronic D4L 12V Marine Diesel Heater kit

    Coming soon

    Espar Airtronic M2 D4L Diesel 12V Marine Heater kit with EasyStart Pro Controller

    (0)

    398,567.13JPY
  • Eberspacher AM3 D4L 12V Airtronic Marine Changeover Kit

    Coming soon

    Espar Airtronic M3 D4L Diesel 12V Marine Changeover Kit with EasyStart Pro Controller

    (1)

    384,073.78JPY
  • Eberspacher / Espar Airtronic D4R 12V 4KW Heater Marine Kit

    In Stock

    , Choose Options

    Espar Airtronic M3 D4R Diesel 12V Marine Heater Kit with EasyStart Pro Controller

    (0)

    478,570.42JPY
  • Espar AL3 D6L Diesel 12V Heater Marine Kit with EasyStart Pro Controller

    In Stock

    , Choose Options

    Espar Airtronic L3 D6L Diesel 12V Heater Marine Kit with EasyStart Pro Controller

    (0)

    MSRP:
    Was:
    Now: 572,487.33JPY - 615,965.93JPY
  • Espar D4L Airtronic 24V Marine Kit

    In Stock

    , Choose Options

    Eberspacher / Espar Airtronic AM3 D4L 24V Marine Kit

    (0)

    339,144.39JPY
  • Espar Airtronic S3 D2L 12V 2 Outlet Marine Diesel Heater Kit with EasyStart Pro Controller

    In Stock

    , Choose Options

    Espar Airtronic S3 D2L 12V 2 Outlet Marine Diesel Heater Kit with EasyStart Pro Controller

    (0)

    355,087.08JPY
  • Eberspacher Airtronic D4R Recreational 12v Diesel Heater Kit

    In Stock

    , Choose Options

    Espar Airtronic AM2 D4R Diesel 12V Heater Kit with EasyStart Pro Controller

    (2)

    379,725.77JPY
  • Eberspacher / Espar M3 D4R Airtronic 12V Marine Kit

    In Stock

    , Choose Options

    Espar Airtronic M3 D4R Diesel 12V Marine Heater 3 Outlet Kit with EasyStart Pro Controller

    (0)

    545,384.76JPY
  • Espar Airtronic D4L 12V Marine Diesel Heater kit

    Coming soon

    Espar Airtronic M2 D4L Diesel 12V Marine Heater kit with EasyStart Pro Controller

    (0)

    398,567.13JPY
  • Eberspacher AM3 D4L 12V Airtronic Marine Changeover Kit

    Coming soon

    Espar Airtronic M3 D4L Diesel 12V Marine Changeover Kit with EasyStart Pro Controller

    (1)

    384,073.78JPY
  • Eberspacher / Espar Airtronic D4R 12V 4KW Heater Marine Kit

    In Stock

    , Choose Options

    Espar Airtronic M3 D4R Diesel 12V Marine Heater Kit with EasyStart Pro Controller

    (0)

    478,570.42JPY
  • Espar AL3 D6L Diesel 12V Heater Marine Kit with EasyStart Pro Controller

    In Stock

    , Choose Options

    Espar Airtronic L3 D6L Diesel 12V Heater Marine Kit with EasyStart Pro Controller

    (0)

    MSRP:
    Was:
    Now: 572,487.33JPY - 615,965.93JPY
  • Espar D4L Airtronic 24V Marine Kit

    In Stock

    , Choose Options

    Eberspacher / Espar Airtronic AM3 D4L 24V Marine Kit

    (0)

    339,144.39JPY
  • Espar Airtronic S3 D2L 12V 2 Outlet Marine Diesel Heater Kit with EasyStart Pro Controller

    In Stock

    , Choose Options

    Espar Airtronic S3 D2L 12V 2 Outlet Marine Diesel Heater Kit with EasyStart Pro Controller

    (0)

    355,087.08JPY
!

Marine Diesel Heater Kits for Boats, Yachts & Sailboats

Reliable Marine Diesel Heaters for Every Boat

Whether you're cruising on a yacht, or living aboard a boat, a marine air heater kit is a must-have for keeping your cabin cozy. With Espar Airtronic heater models you’ll find a boat cabin heater that fits your power setup and heating needs.
Choose from 12V or 24V systems, and heat outputs from 6800 BTU to 17000 BTU (2kW to over 5kW) - perfect for small sailboats to small yachts.

Designed for Harsh Marine Conditions

Built tough for life on the water, each boat heater kit is designed to perform in cold, damp, and salty environments.
Heatso offers Eberspacher and DBW heaters that can be used for marine applications. These are one of the best choices for boat heating applications.

Find the Right Boat Heater Kit for Your Vessel

Whether you're upgrading or equipping your boat for the first time, we've got a marine cabin heater to match your needs. Eberspacher heater models like the Espar Airtronic M3 D4R or Airtronic M2 D4L deliver powerful, efficient heating in a sturdy, marine-ready design.
For larger boats, the powerful L3 D6L model delivers reliable heat even in the coldest conditions. The kits are easy to install and include everything you need to get comfortable on the water.

Why Choose Heatso?

At Heatso, we're not just a store, we're your partner in making life off-grid and on the water more comfortable. With over a decade of hands-on experience in van life and marine setups, we know what products deliver true reliability.

Still Have Questions?

Reach out to our friendly support team for expert advice on finding the right marine cabin heater for your vessel. We’re here to make your life at sea warmer and more comfortable. Contact us now and sail into your next adventure fully prepared.

FAQs

  • Can I install a boat cabin heater myself?
    You can install it yourself if you are technically skilled. However, marine heater installations are somewhat different, as they need to comply with specific marine safety regulations. For this reason, we recommend leaving the installation to a specialized marine workshop.
  • Are your marine diesel heaters safe to use on water?
    Absolutely. They’re suitable for marine use, built with corrosion-resistant materials and equipped with safety features. However, all marine and manufacturer safety regulations must be strictly followed.
  • What power options do I have?
    We offer 12V and 24V models to match your boat's electrical system.
  • Will these heaters work in freezing conditions?
    Yes! They’re built to handle cold, wet, and windy weather without fail.
  • Can I get help choosing the right marine heater?
    Of course! Contact us anytime for expert product recommendations based on your boat type and usage.


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