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AIRTRONIC MARINE HEATERS

Dry, Silent Cabin Comfort

AIRTRONIC S3 D2L

Extend your sailing season with the Eberspacher Airtronic S3 D2L, the definitive 2.2kW heating solution for smaller vessels. Designed to combat marine damp and cold, this unit features a brushless motor with an extended 5,000-hour service life and utilizes stepless blower technology. Coupled with an acoustically dampened fuel metering pump, this ensures whisper-quiet operation and minimizes power consumption, preserving vital battery capacity while at anchor.

Crucially, a professional marine installation requires specific components for safety and longevity. This dedicated marine specification includes a stainless steel mounting bracket, a specialized marine exhaust with an inline silencer, and a heavy-duty hull skin fitting. These marine-grade parts ensure a corrosion-resistant, compliant installation that withstands the harsh sea environment.

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Powerful Warmth for the Open Water

AIRTRONIC M3 D4R

Banish onboard dampness and extend your cruising season with the Eberspacher Airtronic M3 D4R Marine. This robust 4kW air heater is engineered specifically for larger saloons and multi-cabin yachts, delivering rapid, even warmth to protect your interior from condensation and mold. It features a next-generation brushless motor rated for a massive 5,000-hour service life and utilizes stepless blower technology for near-silent operation, ensuring the tranquility of your anchorage is never disturbed.

For a safe and compliant installation, dedicated marine kits provide essential components including the EasyStart Pro controller, a corrosion-resistant stainless steel mounting bracket, and a heavy-duty exhaust hull skin fitting. This comprehensive specification ensures a professional-grade setup capable of withstanding the harsh marine environment while keeping your cabin dry and comfortable.

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Airtronic 3_AM3_Rendering
Airtronic 3_AM3_Rendering
Command Total Climate Control with

AIRTRONIC L3 D6L

Designed for the most demanding marine environments, the Eberspacher Airtronic L3 D6L Marine provides absolute thermal comfort for large yachts, catamarans, and commercial vessels. With a massive 6kW heat output, this flagship heater effortlessly warms multiple cabins and spacious saloons while actively eliminating humidity to protect your vessel’s interior structure.

Powered by the latest Gen-3 technology, the unit features a long-life brushless motor rated for 5,000 operating hours and a stepless blower system. This ensures consistent temperatures are maintained without the noise associated with older large-format heaters. For a fully compliant and safe installation, the official marine kit includes essential marine-specific hardware: a heavy-duty stainless steel mounting plate, a marine exhaust system with a high-quality hull skin fitting, and the EasyStart Pro controller for precise management of your onboard climate.

View full technical specifications and marine kit contents.

AIRTRONIC S3 D2L

  • Compact 2.2 kW marine heater designed for smaller sailboats and motorboats

  • Extremely low power consumption preserves house batteries while at anchor

  • Uses a stepless blower system and acoustically dampened pump for whisper-quiet operation

  • Actively dehumidifies the cabin to eliminate dampness and prevent mold

AIRTRONIC M3 D4R

  • High-performance 4 kW heater engineered for mid-sized vessels with complex layouts

  • Features increased airflow (“Recreational” specification) to push heat effectively through long marine ducting

  • Ideal for multi-cabin yachts requiring consistent warmth in every room

  • Integrated altitude sensor ensures reliable operation even when navigating high-altitude inland lakes (up to 5,500m)

AIRTRONIC L3 D6L

  • Powerful 6 kW heating solution for large yachts, catamarans, and commercial workboats

  • Delivers massive thermal output to warm spacious saloons and bridge decks quickly

  • Capable of continuous heavy-duty operation in the harshest sea conditions

  • Utilizes a long-life brushless motor for extended service intervals and maximum reliability

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