The WINDOWWASHER by ITR is a quiet and efficient diesel-fired continuous output water heater. The diesel burner provides 35,000 TRUE OUTPUT™ BTU for directly heating water for clean applications, and fires independent of the vehicle engine.

The WINDOWWASHER provides continuous 38°C water at 3.5 liters/min or 28°C at 6.0 liters/min, and has an internal mixing valve to set a preferred hot water temperature.

The WINDOWWASHER features a stainless steel 300 PSI welded tank, stainless steel outer case, and a high temperature stainless steel burner. The stainless steel construction ensures that the water supplied to the WINDOWWASHER is delivered clean. THE WINDOWWASHER also features on-board self-diagnostics.

Like all ITR products, THE WINDOWASHER features ITR’s patented low-pressure burner platform that offers uniquely safe, quiet, “no-smoke, no-smell,” technology, while also improving efficiency and lowering system maintenance cycles.

The WindowWasher
Diesel Burner TRUE OUTPUT
35,000 BTU
Burner Design
Proprietary ITR low pressure system
Continuous Water Temperature & Flow Rate
120 °F @ 1 GPM
Continuous Temperature Rise (ΔT) of Incoming Potable Water
65 °F
Touch Screen Remote Interface
Coolant Tank Capacity
5.5 gallons
Fuel Consumption (continuous running)
0.34 gallons/hour
System Voltage
12 VDC
Amperage Draw (running)
6.5 Amps
Water Connection
1/2” NPT
Exaust Outlet Connection
1.5” Pipe
14” W x 14” H x 24” L
Weight (empty/full):
75 lbs / 124 lbs