For most New Zealand households, the hi-wall split AC installation cost is somewhere in the mid-thousands fully installed, depending on room size, unit capacity and site access. The section below breaks that down by room size so you can see what installation cost is likely for your home.

In New Zealand, these systems are usually called heat pumps. A single split system heat pump and a split air conditioner are the same product, so this GENERAL New Zealand (formerly Fujitsu New Zealand) guide uses both terms.

For more background, see this Split System AC and Heat Pump Guide.

Installed Price by Room Size

These are indicative market ranges for a fully installed hi-wall split system in New Zealand. They are not General Airstage prices. The final split AC installation cost comes from the installer’s quote after they check the room, system size and installation conditions.

Indicative fully installed price ranges


Room size Typical use Indicative installed price (NZD) What it covers
Up to 25 sqm Bedrooms, home offices, small studies $2,500 to $3,500 Standard hi-wall install, straightforward access
25 to 45 sqm Medium living areas, family rooms $3,200 to $4,800 Standard hi-wall install, larger capacity unit
45 sqm plus Large open-plan living and dining $4,500 to $6,500 Higher capacity unit, often longer pipe runs

What a standard installation usually includes

A standard hi-wall heat pump / air conditioner installation usually includes the indoor unit, outdoor unit, refrigerant lines, electrical connection and condensate drain. It assumes the indoor and outdoor units can be positioned in an accessible location.

Why room size decides the price band

The required system capacity is determined by the room and its heating or cooling needs. A household doesn’t need to choose a smaller or bigger price band by preference. The system should suit the floor area, insulation, windows, sun exposure and how the space is used.

The prices overlap because brand, model efficiency and the installer’s rates all affect the final quote. That is why the cost of one split heat pump / AC installation can be lower or higher than another, even for rooms that look similar.

What Pushes an Installation Quote Higher

Two homes needing the same capacity can still receive quotes hundreds of dollars apart. The difference is usually the site work, not just the unit itself.

Longer pipe runs between the indoor and outdoor units increase the materials and labour needed. A second-storey installation can require scaffolding, ladders or elevated access equipment, which takes more time and adds safety requirements.

Restricted access also affects price. If the outdoor unit needs to sit down a narrow side path, on a roof, under a deck or in a tight service area, the installer has more handling and positioning work to do.

Concrete or brick core drilling can also lift the quote because it needs extra equipment and care. Electrical work is another common factor, especially where the switchboard needs upgrading or a new circuit must be run.

If an old unit is being replaced, removal and disposal may also be included.

This is why a site visit produces a more accurate figure than an online calculator. The installer can see the access and then what materials and labour will be involved before pricing the job.

Single Split or Multi-System: How the Cost Compares

A single split heat pump / air conditioner pairs one indoor unit with one outdoor unit. A multi-system runs several indoor units from one outdoor unit, with each indoor unit controlled separately.

The cost difference depends on how many rooms you want to heat or cool. A multi-system costs more upfront than one single split but usually less than installing the same number of separate split systems across the home. It also needs only one outdoor unit position.

As a simple rule, one or two rooms generally suit separate splits. Three or more rooms is where a multi-system can start to make sense for both total cost and exterior space.

The quote range for a multi-system is usually larger because the installation is more involved. It may need longer pipe runs, more indoor unit positions and additional planning.

Outdoor space matters too. In New Zealand homes, especially on compact sites and in townhouses, having just one outdoor unit can be a key consideration.

Explore multiple room solutions and multi-system heat pumps for the system types.

Grants That Cut the Cost of Installation

Some New Zealand households may be able to reduce the upfront cost of a heat pump / air conditioner through the government’s Warmer Kiwi Homes programme, run by EECA.

The programme co-funds the installation of heaters for eligible households. EECA states that eligible households may receive a grant of up to 90% of the cost, capped at $3,450, if they have a Community Services Card, a SuperGold Combo card or live in one of the highest-need areas.

Homes in middle-income areas are not covered for heating, even though other insulation support may be available.

GENERAL does not administer or guarantee the grant. Check your eligibility directly through the EECA Warmer Kiwi Homes programme before relying on grant funding in your quote.

FAQs

How much does it cost to install a split system in New Zealand?

The hi-wall split AC installation cost in New Zealand, fully installed, typically ranges from about $2,500 to $6,500. Where your home lands in that range depends mainly on the room size and the site conditions, including access, pipe runs, electrical work and whether an old unit needs removing.

Is the installation included in the price of a heat pump/ air conditioner?

In New Zealand, heat pump / air conditioner pricing is often quoted as supplied and installed, so an advertised price may only include a standard install. A unit-only price does not. Standard installation usually excludes harder site factors such as long pipe runs, elevated access, core drilling, switchboard work and old unit removal.

Does a multi-system cost more than separate split systems?

A multi-system costs more than one single split, but generally less than installing several separate split systems.
For one or two rooms, separate splits often make sense.
For three or more rooms, a multi-system can become better value.

Getting an Accurate Quote for Your Home

Room size sets the possible price range, while the specifics of your property and installation determine the final quote.

Compare the range to work out whether separate split systems or a multi-system is going to be the best fit your home.

Use GENERAL New Zealand’s (formerly Fujitsu New Zealand) find a stockist tool to request a quote from an accredited installer in your area.


Kyle Rafter
General Manager, Product & Strategy at GENERAL Australia & New Zealand

Kyle has over 16 years experience within the air conditioning industry. Since joining GENERAL (formerly Fujitsu General) in 2015, Kyle has driven innovation and growth, leveraging his expertise in commercial business development. Passionate about cutting-edge technology, Kyle is dedicated to advancing sustainable solutions in the air conditioning sector.