Heat Pump Size Formula:
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Definition: This calculator determines the appropriate heat pump size (in kW) needed for a room based on Healthy Homes standards.
Purpose: It helps homeowners and landlords comply with Healthy Homes requirements by properly sizing heat pumps for efficient heating.
The calculator uses the formula:
Where:
Explanation: The room area is multiplied by a standard heat loss factor to determine the minimum heat pump capacity needed.
Details: Correct sizing ensures energy efficiency, proper heating, compliance with Healthy Homes standards, and prevents overloading electrical circuits.
Tips: Enter the room area in square meters and heat loss factor (default 0.08 kW/m² for Healthy Homes). All values must be > 0.
Q1: What is the Healthy Homes standard for heat pumps?
A: The standard recommends 0.08 kW per m² for main living areas and 0.06 kW per m² for bedrooms.
Q2: When would I change the heat loss factor?
A: Adjust for poorly insulated homes (higher factor) or well-insulated homes (lower factor).
Q3: Does this include whole-house calculations?
A: No, this calculates for individual rooms. For whole-house sizing, sum all room requirements.
Q4: How do I measure room area?
A: Multiply length by width of the room in meters.
Q5: What about ceiling height?
A: The standard assumes 2.4m ceilings. For higher ceilings, increase the heat loss factor.