How Much Does It Cost to Install a Heat Pump in NZ?

Installing a heat pump is one of the smartest upgrades a Kiwi homeowner can make for year-round comfort and lower power bills. The real question is how much you should expect to pay in 2026, and what drives the price up or down.

Most Kiwi households pay between $2,500 and $6,500 for a fully installed high-wall split heat pump, with ducted and multi-split systems sitting much higher. Below we break down typical prices, what affects them, and how to get a fair quote from a local installer.

Average Heat Pump Installation Cost in NZ

For a standard high-wall split system in a living room or bedroom, installed prices usually fall in this range:

• Small room (up to 25m²): $2,500 to $3,500 supplied and installed
• Medium living area (25 to 45m²): $3,200 to $4,800 supplied and installed
• Large open plan (45m² plus): $4,500 to $6,500 supplied and installed
• Multi-split (one outdoor unit, 2 to 4 indoor heads): $7,500 to $14,000
• Ducted whole-home system: $12,000 to $25,000 plus

Prices include the unit, standard installation, basic pipework, electrical connection, and commissioning. They do not usually cover building consents, scaffolding, or long pipe runs.

What Affects the Price of a Heat Pump Installation

Two homes on the same street can get very different quotes for what looks like the same job. The biggest cost drivers are the size and efficiency of the unit, how far the outdoor unit sits from the indoor head, and how tricky the cable and pipe run is through your walls or ceiling space.

Brand matters too. Premium brands like Mitsubishi Electric, Daikin, and Fujitsu tend to cost more upfront than budget-friendly options, but they usually run quieter, last longer, and hold their efficiency rating better in a cold Kiwi winter.

Other factors that push the price up or down:

• Wall type: weatherboard and brick walls take longer to core through than plaster
• Height and access: second-storey installs or tight roof spaces add labour
• Outdoor unit location: ground mount is more affordable than wall bracket or roof mount
• Existing wiring: an upgrade to your switchboard or a dedicated circuit adds cost
• Region: Auckland and Wellington installers typically quote higher than smaller centres

Split, Multi-Split or Ducted: Which Is Best for Your Home?

A single high-wall split is perfect if you want to heat and cool one main space, usually the lounge or master bedroom. It is the most affordable option and the quickest to install, often done in a single day.

A multi-split runs several indoor units off one outdoor compressor. It is a tidy solution if you want individual control in three or four rooms without cluttering your exterior with multiple outdoor units, but the total cost is higher than three individual splits.

Ducted systems hide everything in your ceiling and deliver even temperatures across the whole house through vents. They are the premium option, great for new builds or major renovations, but the install is more involved and pricing reflects that.

Running Costs and Efficiency

A modern heat pump is one of the most affordable ways to heat a Kiwi home. Expect to pay roughly 30 to 80 cents per hour to run a well-sized unit on a cold evening, depending on your power plan and how well insulated the room is.

Look for a high COP (Coefficient of Performance) and a high HSPF rating on the Energy Rating label. A unit with a COP of 4 or higher delivers four units of heat for every one unit of electricity, which is significantly better than older resistive heating or an open fireplace.

Sizing is just as important as efficiency. An undersized unit runs flat out and costs more to run, while an oversized unit cycles on and off and wears out faster. A qualified installer will do a heat load calculation before they quote.

Do You Need a Builder or Electrician Too?

Most heat pump installers are registered technicians who can handle the full job, including the electrical work under supervision of a licensed sparky. For a standard high-wall split you generally do not need a separate builder or electrician.

You may need extra trades if:

• Your switchboard is full and needs an upgrade (licensed electrician)
• You are installing a ducted system in an existing home (may need carpentry work)
• You are installing into a body corporate building (approval and possibly a builder)
• You want the condensate drain plumbed into an internal waste (plumber)

How to Get a Fair Heat Pump Quote

Always get at least two or three written quotes before you commit. A good installer will visit your home, measure the space, ask about insulation and sun exposure, and recommend a size in kilowatts, not just a brand.

Ask each installer to put these in writing:

• The exact model and capacity in kW (heating and cooling)
• Length of pipe run included and cost per extra metre
• Warranty on the unit and the installation workmanship
• Whether old unit removal and disposal is included
• Payment terms and whether a deposit is required

Be wary of quotes that are well below the others, or installers who push a brand they happen to have in stock without asking about your home.

Find a Trusted Heat Pump Installer Near You

Getting a heat pump sized and installed properly is the difference between a toasty winter and a power bill you dread opening. Work with a qualified local installer who does a proper heat load calculation and stands behind their workmanship.

Browse verified heat pump installers and electricians on Unicorns to compare reviews, services, and coverage areas in your region, then request a no-obligation quote direct from the tradie.