Manufacturer: Sonberg
Sonberg Thermo Box 5.1 5KW Diesel Window Cleaning Water Heater
Sonberg Thermo Box 5.1 5KW Diesel Window Cleaning Water Heater
Get a professionally installed hot water diesel heater system from just £15.58 per week with Kennet Equipment Leasing.
Product Number:SONBERG5.1
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FREQUENTLY ASKED QUESTIONS
How much fuel does the Sonberg Thermobox 5.1 use?
How much fuel does the Sonberg Thermobox 5.1 use?
On average, the system consumes approximately 2.5 to 3 litres of diesel over a seven hour workday when operating at 55 to 60 degrees Celsius.
Can you install this system into my work vehicle?
Can you install this system into my work vehicle?
Yes, we can. We offer two installation options. The first uses an integrated fuel tank, with the air intake and exhaust routed through the vehicle floor. The second connects directly to the vehicle’s fuel tank, ensuring the diesel water heater draws fuel automatically so there is no need to worry about refilling a separate tank
Is there a warranty or guarantee on this system?
Is there a warranty or guarantee on this system?
Yes, there is. We provide free technical support via phone or video call, and all system parts are covered for 12 months against faults or manufacturing defects.
- Dimensions: 430MM W x 200MM D x 650MM H
- Designed for single operator use
- Heats water up to 60 degrees Celsius for faster and higher quality water fed pole window cleaning
- 20KW heat plate exchanger with insulation
- Built in 5.5L diesel tank
- Adjustable frost thermostat built in
- Illuminated fuel level inspection window
- 1/2" BSP fixings make it easy to integrate into your window cleaning system
Can be used as a drop in fully contained or bolted down with intake and exhaust through the floor and fuel drawn from main/aux tank.
Optional water recirculation kit includes: 3 way 1/2" barbed L port with tap, 5 x 13-20MM O clips, 1/2" barbed bulkhead fitting & 5M of 1/2" reinforced PVC hose.
Heated water is a game changer for water fed pole window cleaning, offering distinct advantages that elevate both efficiency and quality. Here’s why it stands out:
Boosted Cleaning Speed
Heated water accelerates the cleaning process significantly. The warmth enhances the water’s ability to dissolve and loosen dirt, grease, and grime on glass surfaces. Unlike cold water, which may require multiple passes to break down stubborn residues, heated water tackles these contaminants more rapidly, reducing scrubbing time. This efficiency allows cleaners to cover more windows in less time, increasing productivity, especially on large commercial jobs or during tight schedules.
Superior Cleaning Quality
The use of heated water results in a noticeably higher quality clean. Warm water improves the solubility of organic and inorganic debris, such as bird droppings, pollen, or hard water stains, ensuring they are lifted away more effectively. This leads to streak free, spotless windows that sparkle under sunlight.
Additional Benefits
Beyond speed and quality, heated water maintains optimal performance in colder weather, preventing freezing in the WFP system and ensuring uninterrupted operation. It also enhances the effectiveness of pure water, which is critical for WFP cleaning, by improving its ability to rinse away contaminants without leaving mineral deposits.






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