Invercargill's very cold winters make heat pump selection important. Look for a heat pump with a cold climate rating — standard units lose efficiency below -5°C, which Invercargill regularly reaches. Mitsubishi Electric's Hyper Heat and Daikin's Altherma series perform well in Southland winters. Here's what heat pump installation costs in Invercargill in 2026.
Invercargill Heat Pump Installation Costs 2026
| Service | Invercargill typical cost |
|---|---|
| Single split system (supply + install) | $3,000–$5,400 |
| Multi-split 2 indoor units (supply + install) | $5,000–$10,200 |
| Ducted heat pump (whole home) | $12,000–$28,000 |
| Heat pump service / regas | $170–$460 |
| Relocate existing unit | $460–$1,050 |
All prices GST inclusive. Below national average.
Invercargill Heat Pump Selection
Invercargill's very cold winters make heat pump selection important. Look for a heat pump with a cold climate rating — standard units lose efficiency below -5°C, which Invercargill regularly reaches. Mitsubishi Electric's Hyper Heat and Daikin's Altherma series perform well in Southland winters.
Sizing for Invercargill
| Room size | Recommended kW |
|---|---|
| Bedroom / small room (<15m²) | 2.0–2.5 kW |
| Medium living (15–30m²) | 2.5–4.0 kW |
| Large open plan (30–60m²) | 5.0–7.0 kW |
| Very large (60m²+) | 7.0–12.0 kW |
A good installer will assess your room, insulation, and window area before recommending a size.
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Related: Heat Pump Cost NZ | Insulation Installers Invercargill