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Webasto Thermosystems at Sure Marine Servivces Inc.

Here you'll find extensive product information on our great line of Webasto boat heaters.

Why Webasto? Webasto is a global market leader in the auxillary heater industry and is a supplier to major equipment manufacturers around the world.

Webasto makes a full line of air and coolant heaters to meet the needs of virtually any size craft. State of the art and micro-processor controlled, all Webasto marine heaters are compact, lightweight, and extremely energy efficient. All heaters are compact, 2 year warranty!!

Heaters for quiet warmth and cozy comfort.

Small in size but not in power, Webasto air heaters generate warm, dry air quickly and quietly.

Adaptable for installation wherever room allows, the Webasto air heaters draws fresh air into a sealed heat exchanger where it is heated very quickly. Powerful fans circulate the warmth evenly throughout any number of outlets, while exhaust is discharged outside.

Heaters for plentiful heat and hot water.

Nothing extends the boating season like a Webasto coolant heater. Sophisticated and powerful enough to heat a yacht, Webasto water heaters are still small enough to fit into snug spaces.

Webasto coolant heaters can warm radiators in all the cabins, or be installed with fan-assisted heat exchangers when space is at a premium. The unit can even be linked to the engine's coolant system, to pre-heat the engine and eliminate cold starts.

With a Webasto heater on board, you'll also have plenty of hot water for showers and the galley, heated by an indirect coil in the hot water tank.

Best of all, you won't be bothered by the drone of a noisy generator. Mounted in the engine room near the batteries and fuel tank, a Webasto coolant heater is almost inaudible.


Air Top 2000: 7,000 BTU
  • Self-diagnostic
  • Highest heat output in it class
  • Low fuel and power consumption
  • Reliable and durable burner system
  • Ceramic ignition system
  • Quiet operation
  • Heat Output
  • 7,000 Btu/h (2.0 kW)
  • Hot Airflow
  • 65 CFM (110 cubic meters/hr)
  • Fuel Consumption: Diesel
  • 0.06 gal/h (0.24 l/h)
  • Power Consumption
  • 0.75 Amps @ 12 V (9W) to 1.8 Amps @ 12 V (22W)
  • Dimensions
    • L 12-11/16" x W 5-1/8"" x H 4-13/16"
          L 322 mm x W 130 mm x H 122 mm
    Weight
  • 8 lb (3.6 kg)
  • Order/Inquiry Kit Contents and Prices


    Air Top 3500: 12,000 BTU
  • Self-diagnostic system
  • Exceptionally low noise level
  • Lowest power consumption in its class
  • Compact design
  • Ceramic flame detector and ignitor
  • Weather resistant control unit
  • Smooth variable heat output
  • Heat Output
  • 12,000 Btu/h (3.5 kW)
  • Hot Airflow
  • 82 CFM (139 cubic meters/hr)
  • Fuel Consumption: Diesel
  • 0.11 gal/h (0.42 l/h)
  • Power Consumption
  • 1.0 Amps @ 12 V (12W) to 3.0 Amps @ 12 V (36W)
  • Dimensions
    • L 16-3/4" x W 5-13/16"" x H 5-13/16"
          L 425 mm x W 130 mm x H 130 mm
    Weight
  • 13.2 lb (6.0 kg)
  • Order/Inquiry Kit Contents and Prices


    Air Top 5000: 18,000 BTU
  • Self-diagnostic system
  • Exceptionally low noise level
  • Lowest power consumption in its class
  • Compact design
  • Ceramic flame detector and ignitor
  • Weather resistant control unit
  • Smooth variable heat output
  • Heat Output
  • 18,800 Btu/h (5.5 kW)
  • Hot Airflow
  • 128 CFM (218 cubic meters/hr)
  • Fuel Consumption: Diesel
  • 0.19 gal/h (0.73 l/h)
  • Power Consumption
  • 1.35 Amps @ 12 V (12W) to 7.5 Amps @ 12 V (90W)
  • Dimensions
    • L 16-3/4" x W 5-13/16"" x H 5-13/16"
          L 425 mm x W 130 mm x H 130 mm
    Weight
  • 13.2 lb (6.0 kg)
  • Order/Inquiry Kit Contents and Prices


    HL60 Air Heater: 22,000 BTU
  • Fast direct heat output
  • Compact unit
  • Independent self-monitoring system
  • Low power consumption
  • Quiet operation
  • Simple, no-maintenance burner technology
  • Heat Output
  • 22,000 Btu/h (6.5 kW)
  • Hot Airflow
  • 167 CFM (280 cubic meters/hr)
  • Fuel Consumption: Diesel
  • 0.22 gal/h (0.86 l/h)
  • Power Consumption
  • 6.3 Amps @ 12 V (80W)
  • Dimensions
    • L 25-5/8" x W 9-1/4"" x H 10-1/4"
          L 650 mm x W 235 mm x H 260 mm
    Dimensions of Enclosure Box
    • L 38" x W 11-1/2" x H 19"
          L 965 mm x W 292 mm x H 483 mm
    Weight
  • 29.26 lb (13.3 kg)
  • Weight w/Enclosure Box
  • 76.3 lb (34.6 kg)
  • Order/Inquiry Kit Contents and Prices


    TSL-17: 17,200 BTU
  • Smallest heater and lowest weight in its class
  • Ferro-tech burner with metal evaporator
  • Ceramic ignition system
  • Developed and produced under ISO 9000 & Q1 standards
  • Heat Output
  • Full: 17,200 But/h (5.0 kW)
  • Reduced: 8,600 Btu/h (2.5 kW)
  • Fuel
  • Diesel
  • Fuel Consumption
  • Full: 0.18 Gal/h (0.50 kg/h)
  • Reduced: 0.09 gal/h (0.25 kg/h)
  • Rated Voltage
  • 12 V
  • Power Consumption
  • Full: 32 W
  • Reduced: 18 W
  • Operating Temperature
  • -40 F to +176 F
  • (-40 C to +80 C)
  • Hose Connections
  • Inlet/Outlet 3/4" (19 mm)
  • Dimensions LxWxH
    (w/out water pump)
  • 8.4" x 4.1" x 6.4"
  • 214 mm x 105 mm x 163 mm
  • Weight (w/out water pump)
  • 6.4 lbs. (2.9 kgs)
  • Order/Inquiry Kit Contents and Prices


    Thermo 90ST: 31,000 BTU
  • Most compact unit in its class
  • Weather resistant control unit
  • Self-diagnostic system
  • Ceramic flame detector and ignitor
  • Heat Output
  • 6,100 Btu/h (1.8 kW) to 31,000 Btu/h (9.1 kW)
  • Waterflow-Pump Model
  • U4846 - 7 gal/min
  • Fuel Consumption
  • 0.06 gal/h (0.24 l/h) to 0.28 gal/h (1.1 l/h)
  • Power Consumption
    (incl. circ. pump)
  • 3.0 Amps @ 12 V (37W) to 7.5 Amps @ 12 V (90W)
  • Dimensions
    • L 14" x W 5-1/4"" x H 8-21/32"
          L 355 mm x W 133 mm x H 220 mm
    Dimensions of Enclosure Box
    • L 15-3/4" x W 7-1/2" x H 14"
          L 400 mm x W 190 mm x H 356 mm
    Weight
  • 10.6 lb (4.8 kg)
  • Weight w/Enclosure Box
  • 35 lb (16 kg)
  • Order/Inquiry Kit Contents and Prices


    DBW 2010: 45,000 BTU
  • Lowest power consumption in its class
  • Very compact design for heat output rating
  • Easily adapts to existing water heat systems
  • Engine preheating avoids cold starts
  • Low-maintenance nozzle burner
  • Quiet operation
  • Heat Output
  • 45,000 Btu/h (13.1 kW)
  • Waterflow-Pump Model
  • U4846 - 7 gal/min
  • Fuel Consumption
  • 0.4 gal/h (1.51 l/h)
  • Power Consumption
    (incl. circ. pump)
  • 7.1 Amps @ 12 V (85W)
  • Dimensions
    • L 23" x W 8-1/16" x H 9"
          L 584 mm x W 205 mm x H 228 mm
    Dimensions of Enclosure Box
    • L 24" x W 9-3/4" x H 11-5/8"
          L 610 mm x W 247 mm x H 295 mm
    Weight
  • 33lb (15 kg)
  • Weight w/Enclosure Box
  • 65 lb (29.5 kg)
  • Order/Inquiry Kit Contents and Prices


    DBW 2015: 45,000 BTU
  • Lowest power consumption in its class
  • Very compact design for heat output rating
  • Easily adapts to existing water heat systems
  • Engine preheating avoids cold starts
  • Low-maintenance nozzle burner
  • Quiet operation
  • Heat Output
  • 45,000 Btu/h (13.1 kW)
  • Waterflow-Pump Model
  • U4846 - 7 gal/min
  • Fuel Consumption
  • 0.4 gal/h (1.51 l/h)
  • Power Consumption
    (incl. circ. pump)
  • 7.1 Amps @ 12 V (85W)
  • Dimensions
    • L 23" x W 8-1/16" x H 9"
          L 584 mm x W 205 mm x H 228 mm
    Dimensions of Enclosure Box
    • L 24" x W 9-3/4" x H 11-5/8"
          L 610 mm x W 247 mm x H 295 mm
    Weight
  • 33lb (15 kg)
  • Weight w/Enclosure Box
  • 65 lb (29.5 kg)
  • Order/Inquiry Kit Contents and Prices


    DBW 2020/300: 105,000 BTU
  • Very compact design for heat output rating
  • Easily adapts to existing water heat systems
  • Engine preheating avoids cold starts
  • Low-maintenance nozzle burner
  • Quiet operation
  • Heat Output
  • 2020: 80,000 Btu/h (23.3 kW)
  • 300: 104,000 Btu/h (30.0 kW)
  • Waterflow-Pump Model
  • 2020: U4814 - 23 gal/min
  • 300: U4814 - 23 gal/min
  • Fuel Consumption
  • 2020: 0.79 gal/h (3.0 l/h)
  • 300: 1.0 gal/h (4.0 l/h)
  • Power Consumption
    (incl. circ. pump)
  • 2020: 10.0 Amps @ 12 V (120W)
  • 300: 10.8 Amps @ 12 V (130W)
  • Dimensions
    • Both: L 25-5/8" x W 9-1/4" x H 10-1/4"
          L 650 mm x W 235 mm x H 260 mm
    Weight
  • Both: 48lb (22 kg)
  • Order/Inquiry Common installation Parts and Prices


    WEBASTO FACTORY "DIY" KITS OFFER AN ECONOMICAL OPTION FOR HEATING YOUR BOAT
    "DIY" Kits Come standard With Rheostatic Controls For Variable Heat Output.
    DIY Kit Includes: Ducting and directional outlets, pump & filter assembly, fuel lines and fittings, complete exhaust system and harness and rotary controls. The kit includes all fasteners and hardware for a complete, compliant, marine installation.
    AT2000 DIY Kit Parts List

    AT3500 DIY Kit Parts List

    AT5000 DIY Kit Parts List









    Sure Marine Service Inc.
    5320 28th Avenue NW, Seattle, Washington 98107
    800-562-7797, 206-784-9903, Fax: 206-784-0506