Calculators
Is a heat pump worth it?
Compare a year of heating with your current heaters (plug-in electric, piped gas or LPG) against a heat pump. Enter your heat demand, prices and the cost of the heat pump. The default heat demand suits a cold, large house; most Kiwi homes need less, so lower it if your winter bills are modest.
Common questions
What SCOP value should I use?
SCOP is how many kWh of heat the heat pump makes from 1 kWh of electricity over the heating season. Use the figure from the product's energy rating label or the installer's quote; frosty inland winters lower it.
Which electricity price should I enter?
The price per kWh on your plan including GST. Heat pumps run hardest in the evening peak, so on a time-of-use plan use the peak rate or an average weighted towards it.
Is a heat pump worth it?
Often, especially if you heat with plug-in electric heaters, which turn one unit of electricity into one unit of heat, or if a gas heater is due for replacement and you can drop the gas daily charge or bottle rental. EECA recommends a setting of 18 to 21°C and heating only the rooms you use.
Can I get a grant?
Warmer Kiwi Homes offers heating grants of up to 90%, capped at $3,450, to Community Services Card holders and people in lower-income areas once the home is insulated. Funding is limited, so check EECA's website.