Don't throw your money out the window. Calculate the efficiency of your ventilation system using Calc-Leak. Ingenium, an independent research and energy audit agency, developed a unique web tool, at Lindab's request, which can be used to map out the financial effects of substandard airtight sealing of a ventilation system. Calc-Leak was used to calculate the energy losses as a result of these leaks for a standard hospital, a nursing home for the elderly and an office building.

Calculation based on basic input. In the 'Basic input' section, enter the floor area for the selected building. Select the best air-tightness for the duct network (class D) and compare this with the standard value* (class 2.5A). Calculate both the payback period of the added investment and the annual energy saving.

Calculation based on detailed input. Do you want to know more and simulate a situation? As an HVAC specialist, you can take advantage of the 'Detailed input' option. The more information you know about your chosen ventilation system, the more precise your calculation will be.