Frequently asked questions

A single-room heat pump typically costs $2,500 to $4,500 fitted, depending on brand and capacity. Multi-room systems run higher, often $6,000 to $15,000 plus. Prices vary with wall type, how far the outdoor unit sits from the indoor unit, and electrical work needed. Ask for a fixed quote after a site visit rather than a phone estimate, since every house is different.

Most standard residential heat pump installations do not need a building consent, but rules can vary between councils and depend on the unit's size, location, and your property such as heritage areas or unit titles. A licensed installer will usually know your local council's position. When in doubt, a quick check with your council before installation avoids problems later.

Check they hold the required electrical and refrigerant handling licences, ask for a written fixed quote after a site visit, and confirm what warranty covers both the unit and their workmanship. Ask how long they have operated locally and whether they supply a compliance certificate for the electrical work. Get more than one quote if the job is a large multi-room system.

Generally yes, a heat pump is one of the most efficient ways to heat a home because it moves heat rather than generating it, often producing 3 to 4kW of heat for every 1kW of electricity used. Actual running cost depends on your power plan, climate, insulation, and how well the unit is sized and maintained. Electric heaters and older systems typically cost more to run for the same warmth.

As a rough guide, allow about 100 watts of heating capacity per square metre for a standard New Zealand room with reasonable insulation, then adjust for ceiling height, insulation quality, window size, and orientation. A 20 square metre lounge often suits a 5 to 6kW unit. This is a starting point only, a proper installer will measure and calculate your actual heat load before quoting.

No, the refrigerant work and electrical connection legally require a licensed technician in New Zealand. DIY installation risks unsafe wiring, refrigerant leaks, voided warranties, and potential non-compliance with electrical safety regulations. You can prepare the site yourself, such as clearing space for the outdoor unit, but the actual installation must be done by a qualified professional.

Most quality heat pumps last 12 to 15 years with regular servicing, some longer if well maintained and not run constantly at extremes. Coastal properties often see shorter lifespans due to salt air corrosion on the outdoor unit, so a protective coating or more frequent checks can help. Replacing worn parts like fans or capacitors can extend life before a full replacement is needed.

Heat pumps sold in New Zealand carry an Energy Rating Label showing star ratings for heating and cooling efficiency, higher stars mean lower running costs for the same output. It is worth comparing ratings between models of similar capacity when choosing, since the efficiency difference compounds over the unit's 12 plus year lifespan. Upfront price is not always the best guide to long-term cost.

Expect the installer to assess wall type, ideal indoor and outdoor unit placement, and cable or pipe routing during an initial site visit, then a separate install day involving mounting brackets, running refrigerant lines and drainage, electrical connection, and testing the system. A full single-unit install often takes half a day to a full day. They should test heating and cooling modes before leaving and explain the remote controls.

Most residential single-split heat pumps run on a standard household power supply, but larger or multi-room systems may need a dedicated circuit or higher amperage supply. Your installer will check your switchboard capacity during the quote stage and advise if any electrical upgrades are needed, which should be included as a clear line item in your quote rather than a surprise afterward.