Heat Pumps & Air Conditioners

Heat Pumps at Mitre 10

Heat pumps give you the most efficient heating and cooling option for New Zealand homes, producing three to four times more heat than the electricity they use. The range covers high-wall, floor console and ducted styles for homes of all sizes. Match the kilowatt capacity to your room volume, check the Zoned Energy Rating Label for NZ climate performance and allow for professional installation by a licensed electrician and refrigeration technician.

What size heat pump do I need?

Size the heat pump to the room volume and insulation level. As a rough guide, a well-insulated 30m² living room needs around 4kW to 5kW of heating capacity, while a 60m² open-plan area usually suits 7kW to 9kW. Undersized units struggle on cold mornings; oversized units cycle on and off, which reduces efficiency. A qualified installer will size the system accurately based on your home.

How much does it cost to run a heat pump in NZ?

A typical 5kW heat pump running six hours a day through winter costs around $300 to $500 per year at average New Zealand electricity rates, according to EECA. That works out to roughly a quarter of the running cost of an equivalent plug-in electric heater. Inverter models with a high Zoned Energy Rating Label star count use the least power over time.