Thinking about a new heat pump installation?
These figures combine the price of the appliances, professional labour, and the current market quotes across Canterbury. Below is a clearer breakdown of what drives the numbers and how you can keep the total price as low as possible.
What Really Decides the Cost of a Heat Pump Installation
Unit price
Retail prices for quality high-wall heat pumps start at about $1,300 for a 2.8 kW Daikin heat pump and run to $3,500-plus for premium 7 kW models. Bigger capacity, brand reputation and added features such as Wi-Fi push this figure up.
Labour and materials
A straight “back-to-back” installation (indoor unit on one side of an outside wall, outdoor unit directly behind it) is the cheapest approach: typical labour can begin at $850 to $1,000 in Canterbury. Industry guides put the average installation of components between $900 and $2,000 when extra pipe length, wall brackets or condensate pumps are needed.
Complexity and System Type
Split system
Single room, least pipework, lowest cost.
Multi-Split System
One outdoor unit feeding two to five indoor heads; more refrigerant lines and electrical feeds.
Ducted System
Central fan coil plus insulated ducting to every room; highest materials and labour time.
Ground Source System
Specialist drilling and buried loops; installation alone can top $10k.
Electrical upgrades
Most modern homes already have a suitable circuit, but older switchboards can add $300-$800 for a new breaker or dedicated supply.
Grants and subsidies
If your home meets Warmer Kiwi Homes criteria, you can receive up to 80% off the purchase and installation cost, capped at $3,000, which means some households pay only $400-$700 out of their own pocket.
Typical Price Range in 2025
| System type & capacity | Appliance price* | Install price* | Expected all-up | Christchurch example quotes |
| High-wall split 2-3 kW (bedroom) | $1,300–$1,800 | $850–$1,200 | $2,200–$3,000 | Packages from $1,849 incl. GST & back-to-back installation |
| High-wall/floor split 5-7 kW (large lounge) | $2,000–$3,500 | $1,000–$1,500 | $3,200–$5,000 | Starting $2,500 for 3 kW unit incl. install |
| Multi-split 2-3 rooms (6-8 kW) | $3,500–$6,500 | $1,200–$2,200 | $4,700–$8,700 | Combined materials-plus-labour quoted at $4 k – $9 k in Canterbury (trade quotes) |
| Ducted 8-12 kW whole home | $5,000–$8,000 | $5,000–$9,000 | $10,000–$17,000 | Christchurch villa 100 m²: $13,500-$14,000 incl. supply & install |
| Ground-source / geothermal | $12,000–$16,000 | $4,000–$9,000 | $16,000–$25,000 | National average range |
*All prices NZD, GST incl., are based on current 2024/25 retail catalogues and installer tariffs.
Talk To EAC For An Accurate Quote For Your Project
Where your Money Goes
Positioning – Extra scaffolding, long pipe runs or wall coring can lift labour costs quickly.
Brand & Efficiency – Premium Mitsubishi or Fujitsu models cost more up front but may qualify for higher EECA rebates and run cheaper long-term.
Electrical Compliance – Canterbury installers must supply an electrical safety certificate; allow for a new isolating switch or weatherproof RCD if none exists.
Consents – External units on apartment balconies sometimes need body-corp or resource-consent approval.
Ways to Trim the Final Bill
- Stick to a simple back-to-back layout. It keeps pipe length under 5m and saves the installer’s time.
- Select the correct size, not the largest. Oversized units cost more to buy and may cycle inefficiently. A professional heat-load calculation prevents overspending.
- Book work in the shoulder seasons. Installers discount autumn and spring slots, often shaving $200-$300 off labour.
- Use the Warmer Kiwi Homes grant. If you own and live in a house built before 2008 and hold a community services or gold card, funding can cover most of the bill.
- Bundle jobs. Combining multiple split systems in one visit typically reduces the per-unit labour fee by 10 to 15%.
What EAC’s Clients in Canterbury Typically Pay
Most of our Christchurch customers choose a 5 kW Fujitsu or Mitsubishi high wall heat pump for open-plan spaces such as lounges or dining rooms. A typical package may looks like this:
- Unit: $2,850 (Energy-Star rated, Wi-Fi capable)
- Standard installation (back-to-back): $1,150
- Electrical connection & compliance: $220
- Total: $4,220 inc. GST
Those wanting full-home comfort often upgrade to a ducted 10 kW Mitsubishi. For a 160 m² four-bedroom house with two zones, supply and installation can average up to around $15,500, which is less than installing four separate high-wall units.
Is Heat Pump Installation Worth It?
EECA’s Gen Less calculator puts the average up-front cost of a single split system around $4,400 and still shows it paying back within six to eight winters thanks to lower running costs compared to portable heaters. Add Canterbury’s relatively low electricity tariff, and the payback is shortened further. On a ducted system, the payback horizon is longer, yet owners value full-house comfort and better resale appeal.
Ready to Cost Your Heat Pump Installation?
EAC has been guiding homes in Canterbury through efficient heating solutions for 25 years, from the first site visit through to tidy sign-off. Our certified technicians handle:
- Correct sizing and brand selection
- Transparent, fixed-price quotes
- Safe, fully compliant installation
- Ongoing servicing to protect your investment
Talk to our Christchurch team on 03 359 9555 or book a consultation online today. Get the right heat pump installed for the best price and enjoy Canterbury comfort all year round.
Get In Touch For An Accurate Heat Pump Installation Quote