Heat Pump & Ventilation Electrical Auckland

When To Call Us

When You Need a Heat Pump or Ventilation Electrician

Most heat pump installs in Auckland involve two trades, not one. The supplier (Mitsubishi, Daikin, Panasonic, Fujitsu, and similar) handles the indoor and outdoor units, the refrigeration line set, and the gas charge. The electrical side is separate: a dedicated circuit run from your switchboard to the outdoor unit, the right RCD or RCBO protection, and a load check to make sure your existing supply can carry the new appliance without nuisance tripping. If those two trades do not coordinate, the install stalls. We work the electrical side alongside whichever installer your supplier sends.

An older switchboard is the single most common reason a heat pump install gets delayed. A 1960s ceramic-fuse board cannot legally take a new dedicated circuit, and even a 1990s board with no spare ways forces a partial upgrade before the heat pump can be wired in. A modern 3kW wall-mount unit on top of an existing kitchen, hot water cylinder, and oven load is enough to push an older 60-amp service over its rating. Better to find that out at quoting stage than on install day.

HRV and DVS ventilation systems are simpler in load terms but still need their own circuit, properly fused, with switchgear in an accessible spot. Roof-cavity wiring needs to clear insulation, sit on cable trays where required, and be properly secured. We see a steady stream of jobs where a previous installer ran the wiring loose across ceiling joists, which fails any later inspection.

Ducted heat pump systems are a bigger conversation. Higher draw, larger outdoor units, often a fan coil unit in the roof cavity that needs its own supply and switching. Most ducted jobs in older Auckland homes need a switchboard upgrade before the wiring goes in. Three-phase heat pumps in larger homes or multi-head commercial fitouts follow the same pattern: load calculation first, then wiring, then commissioning. The EECA heat pump guide has good background on sizing, COP ratings, and running costs if you are still working out which unit suits your home.

Services Under Air Conditioning Contractor

What This Category Covers

This category covers the electrical side of heat pump, ventilation, and air conditioning installs. We do not supply the units themselves, and we do not handle the refrigeration or mechanical work. What we do is the dedicated circuits, switchgear, RCD protection, controls wiring, and final commissioning so your supplier can connect their kit and go.

Where We Work

Heat Pumps Across Auckland

Inner-city villas (Ponsonby, Grey Lynn, Mt Eden, Kingsland, Remuera, Herne Bay) almost always need a switchboard upgrade before a heat pump goes in. Original ceramic-fuse boards cannot legally take a new circuit, and limited supply capacity means a 3kW wall-mount on top of existing cooking and hot water loads is right at the edge. Most villa heat pump jobs we quote are really two jobs: a board upgrade first, then the heat pump wiring once the new board is live.

Post-war state-house stock across New Lynn, Henderson, Glen Innes, Mangere, and Otara has the same supply problem from a different angle. Mains are often undersized for modern climate-control loads. A 60-amp service from the 1960s does not cope with an induction cooktop, a heat pump, a hot water cylinder, and an EV charger fighting for headroom. The mains upgrade conversation usually comes up at the same time as the heat pump quote, so we like to do both in one visit.

Modern stock in Hobsonville Point, Albany, Long Bay, and East Auckland is straightforward by comparison. Three-phase is often already on, modern boards have spare ways and RCBOs, and ducted heat pump systems are common because the homes are designed for them from the ground up. Most jobs there are clean dedicated-circuit installs without any board work needed.

Coastal homes (Devonport, Takapuna, Milford, Bucklands Beach, Mission Bay) need salt-rated outdoor enclosures and careful condensate drainage planning. Salt eats unrated gear inside two winters, and condensate runs that drip onto exposed metal accelerate the damage. We spec coastal-grade hardware from the start rather than charging twice. Commercial fitouts (offices, retail, light industrial) are typically multi-head VRF systems with dedicated mains, controlled startup, and BMS integration. Those jobs run on the commercial side rather than residential, but the electrical principles are the same.

About Totally Amped Electrical

Why Choose Us for Heat Pump Electrical Work

We have been trading since 2009, and every electrician on the team is EWRB-registered. Every job that legally requires a Certificate of Compliance gets one, and every quote is in writing before any work starts. We work alongside the major heat pump suppliers and their installers (Mitsubishi, Daikin, Panasonic, Fujitsu, and the local Auckland install crews who fit those brands) so the trades coordinate properly and the install lands on schedule.

If your job needs a deeper look at a specific area, we have dedicated pages for the most common companion work: switchboard upgrades (the most common pre-heat-pump job), new build wiring (heat pump pre-wires planned during the build), and the full services hub for everything else.

If you are not sure whether your switchboard will handle the heat pump you are looking at, just call. A quick site visit and load calculation tells us whether you need a board upgrade first, and we can quote both the upgrade and the heat pump wiring together so you know the full number before committing.

Do you supply and install heat pumps, or just wire them?

Wiring side only. We do not stock heat pump units and we do not handle the refrigeration line set or gas charge. What we do is the dedicated circuit from your switchboard to the outdoor unit, the switchgear, RCD protection, and any board work needed before the install. We work alongside the major suppliers and their installers, so if you have already chosen a unit and a fit crew, we slot in on the electrical side. If you have not chosen a supplier yet, we are happy to point you at installers we have worked with before.

Will my switchboard handle a new heat pump?

Depends on the existing load and the age of the board. A modern board with spare ways and adequate mains supply is usually fine for a single wall-mount unit. A 1960s ceramic-fuse board cannot legally take a new circuit and needs replacing first. Anything in between needs a load calculation. We do that as part of the site visit, then quote both the board work (if any) and the heat pump wiring together so you know the full number before deciding.

Is a heat pump cheaper to run than electric heaters?

Yes, by a wide margin. Heat pumps run at a Coefficient of Performance of roughly three to four, meaning every kilowatt of electricity in produces three to four kilowatts of heat out. A plug-in electric heater is one-to-one. EECA publishes good comparative running cost figures and sizing guidance on their heat pump page, which is worth reading before you commit to a particular unit. The trade-off is the upfront install cost, which is why most homeowners run the numbers over a five-year horizon rather than a single winter.

Do I need a separate circuit for a heat pump?

Yes. A heat pump goes on its own dedicated circuit, properly fused, RCD-protected, and run direct from the switchboard to an isolator near the outdoor unit. Sharing a circuit with other appliances is not safe and not compliant with AS/NZS 3000. If your board does not have a spare way for the new circuit, that is a board work conversation before the heat pump can go in.

Can you install three-phase heat pumps?

Yes. Larger residential homes and most commercial sites already have three-phase mains, and the bigger ducted and multi-head heat pump systems are designed to run off three-phase supply. The wiring is more involved than a single-phase unit, the controls are more complex, and the load calculation is more demanding, but the principles are the same. We have done plenty of three-phase installs across Auckland on both residential and commercial sites.