GB SERIES | Air Heater
1100 – 2500 W
3,700 – 8,500 BTU
Engineered to Minimize Amperage Draw in a Compact Heater
With 2.5 Kw of heating power, the Wallas 22 GB is perfect for smaller boats, camper vans, and trailers, and using only 1 amp at full power, it is an excellent option for sailboats. Improving on the older 22 Dt model, the 22 GB is more powerful and energy-efficient. Double inlet pipes ensure you have oxygen rich fresh air circulating in your boat. Wallas off-grid heaters are pleasant to use as the variable output eliminates system cycling and noise.
While a 22 GB is an entry-level compact 12 V diesel heater, it comes with an easy-to-use thermostatic control panel. Adjusting it to the desired temperature makes sure everyone is comfortable belowdecks.
Two Inlets and Outlets Improve Airflow and Efficiency
Two inlets take fresh air from outside and recirculate heated air in the cabin. This improves efficiency and ensures oxygen rich air in the cabin.
Two outlets reduce air drag and keep the sound level low. They also reduce power consumption and facilitate smooth distribution of heated air throughout the cabin. The bigger the cross-sectional area of the ducts are, the less it reducts the airflow and does not require more power from the ventilation fan.
Variable output eliminates disturbing system cycling and reduces noise.
Fully enclosed laminar burning process does not leak odors into the cabin and dries the indoor air.
Brushless blower motors have a very long life-cycle, supporting reliably long service intervals.
Updated software optimizes fuel and electricity consumption
Calibrated to burn renewable fossil free diesel (e.g. HVO)
Larger burner burns fuel slower resulting in ultra low NOX emissions
Extensively tested with Neste
Improved burner efficiency for more power
The Greenboost burner burns renewable fossil-free diesel cleanly and energy-efficiently
Two inlets and outlets improve fresh airflow and efficiency
Combustion air is taken from outside the boat through the outer coaxial pipe
Exhaust gas is safely expelled outside through the inner coaxial pipe keeping the indoor air clean and odourless
Fully enclosed laminar burning process ensures a quiet sound level and dries the indoor air
Variable output eliminates system cycling and reduces noise
Brushless blower motor has a longer life-cycle and requires less frequent servicing
Feeding fuel directly from the main tank of the vessel saves space and eliminates the need for a separate tank
Durable Finnish design and manufacturing keep your heater running through tough weather conditions
Three second press-and-hold upon starting the unit improves safety for families with children
Enjoy smooth temperature in cabin
Ensure everyone’s safety with a heater that has low temperature on unit and exhaust pipe
Keep interior upholstery fresh with dry heat from the laminar combustion
Have better comfort control with an easy-to-use thermostatic control panel
Save fuel and electricity with energy-efficient Wallas Greenboost technology
Fuel: Diesel, HVO renewable diesel
Power: 1100-2500 W (3,700-8,500 BTU)
Operating Voltage: 12 V
Fuel Consumption: 0,10-0,25 l/h (3.4-8.5 oz/h)
Electricity Consumption: 0,55-1,0 A
Air Volume at min Heat: 51 m3h (30 cfm)
Air Volume at max Heat: 79 m3/h (47 cfm)
Length: 424 mm (16 11/16″)
Width: 140 mm (5 1/2″)
Height: 277 mm (10 7/8″)
Weight: 10 kg (22 lbs)
Mounting: Floor or wall
Boats: 5-7 m (16-22 ft)
Camper vans (retrofitted): VW T6, MB Vito
Trailers: 4 m (13 ft)
STANDARD PACKAGE CONTENT
PI Thermo Control Panel, wire 6 m (19 ft)
Fuel line 4 m (13 ft)
Power cable 4 m (13 ft) with connector and integrated fuse 15 A
Mounting plate, feet brackets
Accessory bag including essential clamps and screws
4430 Remote Control is an additional accessory
Stainless Steel, High-Grade Aluminum, Other Corrosion-Resistant Materials
Recommended builds should be used as general guidelines. The needed heat output is based largely on the material (wood, fiberglass, aluminum etc.) and structure of the boat. Always discuss this with a Wallas distributor, before making your purchase.
Technical values are measured in a reference measurement wall, which is constructed to respond to a typical boat installation. Values have been measured with maximum length of ducting, exhaust pipe, fuel line, and power cord. Figures allow for 10% reserve – yours may vary.
Wallas diesel heaters are designed to run with standard road and boat diesel, as well as renewable fossil free diesel. Check with your distributor for further details on best options for your needs.
Do you currently have a Wallas Dt heater?
22 GB’s outside dimensions, controls, and connectivity are the same as in the older 22 Dt model, which makes it easy to swap units.
Reach out to your distributor to learn how to upgrade to a newer more efficient model and save money.