Call us at 1-800.562.7797 or use our Contact Form  
                                       
Showroom Open 8:00am to 4:30pm M-F PST

USPS International Services are experiencing delays.
International Priority mail is currently taking 4+ weeks. 
 
 
 
 
  • CurrencyUS
    • En
      0 items $0.00
      • Login Logout
      • Account
      • Re Order
      • Quick Buy
      Logged in as:   
       
                                      Call us at 1-800.562.7797 or use our Contact Form  
                                             
      Showroom Open 8:00am to 4:30pm M-F PST

      USPS International Services are experiencing delays.
      International Priority mail is currently taking 4+ weeks. 
       
       
       
      • Welcome
      • Shopping Cart
      • My Account
      • Heat
      • Cool
      • Galley
      • Hardware
      • Electrical
      • Info
      • Shop
        Heat > Webasto Diesel Heaters > Forced Air Heaters > 

        Categories

        Heat
        Webasto Diesel Heaters
        Forced Air Heaters
        Hydronic Heaters
        Basic Heater Kits
        Heating System Installation Equipment
        Webasto Repair Parts
        Deluxe Heater Kits
        Olympia Hydronic Furnaces
        Proheat Diesel Heaters
        REAL Hydronic Air Handlers
        Solid Fuel Heater
        Diesel Stoves and Heaters
        Propane (LPG) Heaters
        King Electric Marine Heaters
        Cool
        Galley
        Hardware
        Electrical
        Info
        Shop

        Webasto Air Top 40 13,300 Btu Forced Air Marine Heater with Surewire



        Webasto Air Top 40 13,300 Btu Forced Air Marine Heater with Surewire


        Quantity Pricing
        SKU: AT40SW-12

        Price: $3,367.81

        $3,367.81
        Our Price: $3,367.81

        1
        Stock Availability:

        Select Options:

         
        Add to Wish List Please, login and add to Wish List.


        Or:

        Go to Wish List

        AT40SW-12
        12 Volt Diesel Forced Air Heater
        with Marine Installation Manual, Fuel Pump & Surewire Kit
        Heat Output:13,300 btu
        Fuel Consumption:.12 gal/hr (0.45 l/hr)
        Voltage:12 volt (24 volt available)
        Power Consumption (12v):
                    Full:
                    Start-up (first 30 secs):

        3.4 amps
        10 amps
        Dimensions:L 16.65" x W 5.83" x H 6.38"
        (311mm x 120mm x 121mm)
        Weight:5.9 lbs (2.68 kg)
        The AT40SW-12 will heat mid-sized boats up to a 34 feet in length.

        The AT40SW-12 utilizes a 90mm and 60mm hot air duct system, a 24mm exhaust system, and a 3/16" fuel system.
        Featuring: Surewire Air:

        The Surewire Air board puts all electrical connections into one place making installation and troubleshooting of your heater easier than ever before.

        The Surewire Air is for all Webasto air heaters.

        Features include:

        • New!  Ultra Quiet Fuel Pump
        • Ready for hassle free thermostat wiring
        • Hour meter to track run time of the heater
        • Comes with protective cover and backing plate
        • Breaker protection of heater in one convenient place
        • Self Diagnostic with fault code light
        • Fuel pump indicator light
        • Fuel pump priming button (No more disconnecting or bridging wires)
        You will need to add some of the products below for a complete install kit.
        Contact us if you need help designing a system.

        or


        **Click Here For Deluxe Heater Kit Suggested Part Lists & Pricing**
         
         

        Warning: cancer and Reproductive Harm -

        https://www.p65warnings.ca.gov/

        These warnings are not an indication that these products are violating any safety standards or regulations.

        However, as our products might be sold in the state of California, we are legally obliged to inform customers about the potential presence of these chemicals in our products.


        • Customers who viewed
          this item also viewed
        • Accesories

        001-010 3/16" Copper Fuel Line

        001-055KIT

        Combustion Air Intake Silencer for 22mm, 24mm, 1" & 1-1/4" *5ft Long

        001-379 1-1/4" Combustion Air Intake Thru Hull

        Webasto 1320206A High temperature 60mm threaded Black Grille

        1320220A 22mm to 24mm stainless steel exhaust clamp

        Webasto 1320468A High temperature 90mm threaded grille duct adapter

        Webasto 1320707A High temp 90mm x 60mm x 90mm branch wye

        Webasto 1320922A High temperature 60mm threaded grille duct adapter

        Webasto 1320932A High Temp 90mm threaded Black Straight

        60MM PAK Hot Air Duct 10 FT

        41685 Brass 1/8" Male NPT x 1/8" Female NPT Ball Valve

        6736M51

        6736M51 #36 Clamp, Lined, 316SS

        6756M51

        6756M51 #56 Clamp, Lined, 316SS

        75135K-15

        75135K-15 15 Amp Inline Manual Reset Breaker Kit

        B7W10T-20 10/2 AWG (Wht Jacket) 2 Cond Tinned Boat Cable

        B7W16T-20 16/2 AWG (Wht Jacket) 2 Cond Tinned Boat Cable

        B7W16T-30 16/3 AWG (Wht Jacket) 3 Cond Tinned Boat Cable

        Permatex 80016 Form-A-Gasket #2, 3 oz.

        PERM-81878 Permatex Ultra Copper

        SC1600B Digital Thermostat

        W001-434 22mm-24mm-30mm high temperature exhaust insulation

        W002-172NUT

        W002-172NUT 24mm Stainless Horizontal outlet exhaust thru hull

        W005-216 AirTop Series AT Mount Bracket Powder Coated Aluminum

        W005-912-KIT

        W005-912-KIT 3/16" S/S Fuel Syphon Tube

        W903-94A 24mm Stainless steel flexible exhaust

        90MM PAK Hot Air Duct 10 FT

        WDL60046-2

        Delavan DL60046-2 Fuel Filter Kit

        • Recently Viewed

        Information

        • About Us
        • Delivery Information
        • Privacy Policy
        • Terms & Conditions

        My Account

        • Overview
        • Order History
        • Re-Order Items
        • Profile

        Get In Touch

        • Call us to ask any questions (800) 562-7797
        • Send us an email Contact Us
        • 5320 28th Avenue NW STE 100, Seattle, Wa 98107, USA

        Social

        Newsletter Sign Up

        © 2025 Sure Marine Service Inc

        Sure Marine Service, Inc.
        5320 28th Ave NW
        Seattle , WA , 98107
        (206)784-9903