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Regions

Heat pump installers in CanterburyHeating first, from Christchurch down to Timaru.

Canterbury is heat pump country: 86.17% of Christchurch homes and 74.47% of Timaru District homes used one in the 2023 Census. What changes across the region is how cold the winters get, how strict the burner rules are and how close you live to the sea. Here's how that plays out, with the national rules that apply wherever you are.

How heating differs across Canterbury

South Canterbury is colder

NIWA gives Timaru 2,555 heating degree-days a year and Christchurch 2,370. On the 1991 to 2020 normals, the July average low is 0.7 degrees at Christchurch Airport and -0.9 at Timaru Airport. MBIE's H1/AS1 puts both Christchurch City and Timaru District in climate zone 5 of six.

Nor'west heat, in short bursts

NIWA says warm foehn nor'westers can push summer highs past 30 degrees throughout Canterbury, and occasionally beyond 40. Christchurch averages 3 days a year above 30 and Timaru 2, so cooling is occasional here and heating is the main job.

Five Clean Air Zones

Environment Canterbury says low-emission wood burners can no longer be installed in its Christchurch, Rangiora, Kaiapoi, Ashburton and Timaru Clean Air Zones. It gives low-emission burners in the Timaru zone a 15-year age limit, against 20 years in the other four.

More wood burners further south

EHINZ says 55.6% of South Canterbury dwellings used a wood burner as a main heater in 2023, against 28.2% nationally. In Christchurch it was 17.55% of homes.

Damp below the national rate

EHINZ puts the damp-home rate at 15.2% in the Canterbury health district and 16.8% in South Canterbury, both under the national 20.6%.

Salt along the coast

NZS 3604's exposure Zone D covers homes within 500 m of the sea, harbours included, from the Christchurch coast and Lyttelton Harbour to Timaru's waterfront. BRANZ says outdoor units in coastal areas need extra anti-corrosive coatings.

No mains gas

Te Waihanga says the South Island has no natural gas reticulation, so gas heating anywhere in Canterbury runs on LPG bottles.

The rules that apply wherever you live in Canterbury

Electrics. Connecting a heat pump is prescribed electrical work. A registered and licensed electrical worker does it and issues a Certificate of Compliance within 20 days of finishing.

Consent. Christchurch City Council says a heat pump needs no building consent when registered electricians install and certify it. We don't have verified positions from the district councils elsewhere in Canterbury, so ask yours. Exempt or not, the work must meet the Building Code and the district plan, noise limits included.

Townhouses. In a unit title, the body corporate's rules can limit outdoor units on common property.

Rentals. Landlords must meet the healthy homes standards, which include fixed heating able to keep the main living room at 18 degrees. Unflued gas heaters never count.

Grants. Warmer Kiwi Homes is EECA's programme for owner-occupiers, and EECA alone decides who qualifies. It stopped taking new burner applications on 9 January 2026.

What we'd do

Our advice across Canterbury

Wherever you are in the region, we'd choose a heat pump on its 2 degree heating figure, because frost is the normal Canterbury winter, not the exception. In a Clean Air Zone with an ageing burner, we'd compare a heat pump before replacing like with like. Near the coast, we'd ask for corrosion protection in writing.

Cities in Canterbury

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Read next

  1. 01Heat pumps in ChristchurchHeating a Christchurch home: frost-proof sizing, Clean Air Zone burner rules, coastal salt and consents.
  2. 02Heat pumps in TimaruHeating a Timaru home: sizing on the 2 degree rating, the 15-year burner limit, sea air and ventilation.
  3. 03Do you need a consent for a heat pump?When a heat pump needs a building consent, what applies without one, and the noise limits for outdoor units.
  4. 04The healthy homes heating standardWhat the rental heating standard asks for, which heaters count, and how to check a heat pump against it.
  5. 05Warmer Kiwi Homes heat pump grantsWho EECA's programme is for, what its current heat pump list covers, and how to check before you sign.
  6. 06All locationsEvery region and city we cover, and why the place changes the heat pump job.

Where this information comes from

We don't publish prices. Every home is different, so an installer's written quote is the only real number. How we write and check these pages.

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