Guide
Save up to DKK 75,000 annually on ventilation cleaning
Ventilation systems in commercial kitchens are one of the large, invisible operating expenses. Most kitchen managers know that ducts need to be cleaned – but fewer have an overview of what it actually costs over a year.
Introduktion
Here we examine what cleaning ventilation ducts realistically costs, which factors drive up the bill, and how preventive technology can significantly reduce overall expenses.
What does ventilation cleaning cost in practice?
Cleaning ventilation ducts in a commercial kitchen typically costs DKK 3,000-4,000 per linear meter – a figure that is consistent across H2O Shift's documented client cases and aligns with the ventilation industry's own price estimates. This might sound manageable, but in a professional restaurant kitchen with a hood, greasy ducts, and connected deep fryers, the costs quickly add up.
In environments with intensive operation – restaurants, canteens, fast-food kitchens – it may be necessary to clean every six months to maintain optimal performance and meet fire safety requirements. If you combine the ducts, the extractor hood, and the cooking equipment, the total bill often ends up at DKK 50,000-75,000 per year in many places, according to industry estimates.
This is an amount that most operations and facility management departments don't have as a fixed budget item – but which nevertheless arises, either planned or as an unplanned emergency expense.
What happens if you wait too long?
Grease deposits in the ducts increase resistance and force the exhaust system to work harder. This leads to higher energy consumption and increased wear on motors and fans. The result is a gradual degradation of performance, which is difficult to detect in the short term, but which manifests in the energy bill and – ultimately – in an unplanned operational shutdown.
Clogged ducts are also a direct fire hazard. Grease deposits in ventilation systems are a recognized cause of kitchen fires, and that is precisely why regular cleaning is a requirement – not just a recommendation – in many operating contracts and insurance agreements.
Maintenance: what to look out for?
A structured maintenance effort involves more than just the duct cleaning itself. A complete maintenance inspection typically covers:
Filters and grease traps must be cleaned or replaced regularly. In busy kitchens, this should occur weekly or at a minimum every 14 days.
The range hood accumulates grease on surfaces and in joints. Regular cleaning prevents the grease from baking on and becoming difficult to remove.
Motors and fans require ongoing attention. On older systems, regular inspection of belts and bearings is recommended. Modern systems are typically equipped with maintenance-free sealed motor bearings and do not require the same type of inspection.
The duct system should be inspected and cleaned according to a fixed plan – at least twice a year for heavily used kitchens.
DS/EN 16282 and ventilation in commercial kitchens
DS/EN 16282 is the European ventilation standard for commercial kitchens. It defines requirements for air volumes, duct design, and extraction capacity and forms the technical basis for how ventilation systems should be sized and operated in professional kitchens.
Power2Air from H2O Shift is compatible with DS/EN 16282 and can be installed in existing systems without altering duct geometry or capacity.
Preventive technology as a supplement to treatment
The ventilation industry recommends ongoing maintenance as best practice – and companies that combine regular cleaning with preventive technology report savings of up to DKK 75,000 annually (documented in cases at, among others, Sticks’n’Sushi and Normal A/S).
The benefits primarily stem from two areas: lower energy consumption, because the system doesn't have to fight against grease deposits, and fewer unplanned operational stops, because maintenance requirements noticeably decrease.
H2O Shift's Power2Air uses electrostatic technology to reduce grease accumulation in exhaust hoods and ducts. The system is chemical-free and requires no filters or consumables. It does not eliminate the need for cleaning entirely – but it extends the intervals and protects the system between cleanings.
For a kitchen that currently cleans twice a year, this could realistically mean reducing it to once a year – and saving the 25,000-37,500 DKK that a cleaning costs, directly from the budget.
What can you expect to save?
The specific savings potential depends on:
- Total length of the duct system
- Production intensity (number of meals, grease load)
- Current cleaning frequency and price per meter
- System age and condition
For a medium-sized restaurant kitchen with 15-20 linear meters of ducts and two cleanings per year, a total annual saving of 30,000-50,000 DKK is realistic through a combination of preventive technology and optimized cleaning intervals.
For larger institutional kitchens with a more extensive duct network and higher cleaning frequency, savings can approach 75,000 DKK, as demonstrated by the most effective cases.
Next step
If you want an accurate picture of your savings potential, H2O Shift's team can review your current cleaning frequency, duct network, and operating costs – and provide a concrete proposal on what Power2Air can do for your bottom line.
How much can you save on ventilation?
Calculate your potential savings in 3 minutes – and see what preventative technology can do for your bottom line.
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