Insulation/ CALCULATOR

Ventilation fan electricity

Estimate daily and period electricity use from the measured or rated supply and extract fan power.

Supply fan input powerWUse measured input or product data at the selected operating point.

Extract fan input powerWEnter zero for a system without a separate extract fan.

Operating hours per dayh/dayUse equivalent full-power hours if the fans modulate.

Number of daysdaysChoose the period being assessed.

Electricity pricecurrency/kWhUse the marginal tariff in any currency.

Combined fan input

70 W

Electricity per operating day

1.68 kWh/day

Electricity for the period

613.20 kWh

Estimated electricity cost

122.64 currency

The entered power represents the selected operating point and the equivalent hours capture modulation. Filter loading, frost mode, standby power, controls and changing airflow can alter actual electricity use.

Continue your calculation

Insulation

Air changes to ventilation airflow

Convert floor area, average ceiling height and a chosen air-change rate into continuous airflow.