In New Zealand, installing a heat pump is restricted work — meaning it must be carried out by properly licensed tradespeople. The installation touches both electrical wiring and refrigerant handling, so two separate areas of licensing apply. Knowing what to look for protects you legally, keeps your warranty valid, and — most importantly — keeps your home safe.
Why Licensing Matters for Heat Pump Installation
Heat pump installation involves connecting to your home's electrical supply and handling refrigerants (the gases that move heat around the system). Both of these are tightly regulated in New Zealand. Unlicensed work can void your manufacturer's warranty, invalidate your home insurance, and create serious safety hazards including fire risk and refrigerant leaks.
Electrical Licensing Requirements
Any work on your home's fixed electrical wiring — including connecting a heat pump to a dedicated circuit or installing a new circuit from the switchboard — is restricted electrical work under the Electricity Act 1992. This work must be carried out (or supervised) by a Registered Electrician or Licensed Electrical Inspector.
All electrical workers in New Zealand must be registered with the Electrical Workers Registration Board (EWRB). You can search the EWRB's public register online to verify that your installer holds a current, valid licence before work begins. Always ask to see their licence card.
After completing restricted electrical work, the installer must issue you an Electrical Certificate of Compliance (CoC). If they don't offer one, that's a serious red flag.
Refrigerant Handling Requirements
Modern heat pumps use refrigerants that are controlled substances under New Zealand's Ozone Layer Protection Act 1996 and associated regulations. Handling, recovering, or charging refrigerants requires a Refrigerant Handling Licence, issued by the EWRB (which also covers this area of licensing in NZ).
There are different classes of refrigerant handling licence depending on the type and quantity of refrigerant involved. For typical residential heat pumps (split systems), installers need a licence that covers the specific refrigerant used — commonly R32 or R410A in modern units.
Typical Qualifications a Qualified Installer Holds
A fully qualified residential heat pump installer in New Zealand will generally hold:
| Qualification / Licence | Issued By | What It Covers |
|---|---|---|
| Registered Electrician (or higher) | EWRB | Fixed wiring, circuit connection |
| Refrigerant Handling Licence | Relevant licensing authority (confirm current arrangements) | Handling, recovering, charging refrigerants |
| Trade Certificate (e.g. in refrigeration & air conditioning) | NZQA / Competenz | Underpinning technical knowledge |
Many installers will also hold manufacturer-specific training certifications from brands such as Mitsubishi Electric, Daikin, Fujitsu, or Panasonic. While these aren't a legal requirement, they demonstrate product knowledge and are often required to maintain the manufacturer's extended warranty.
What About the Physical Mounting and Pipework?
The physical mounting of the indoor and outdoor units, and the copper refrigerant pipework between them, is not restricted electrical work in itself — but it must still be done competently and is almost always carried out by the same licensed installer as part of the full installation. Attempting to do this yourself and then having a licensed person only do the electrical connection is not recommended and may not comply with manufacturer requirements.
Building Consent — Do You Need One?
Most standard residential heat pump installations are exempt from building consent under Schedule 1 of the Building Act 2004, provided the work meets the relevant clauses of the NZ Building Code (particularly H1 Energy Efficiency). However, exemptions can depend on your specific situation — for example, if structural work is involved in mounting, or if you're in a heritage zone. Always check with your local council if you're unsure.
How to Verify Your Installer's Credentials
- Search the EWRB register at ewrb.govt.nz before work starts.
- Ask for their licence card on the day.
- Confirm they will provide an Electrical Certificate of Compliance on completion.
- Check whether they hold manufacturer training for the brand you're purchasing.
- Look for membership of industry bodies such as the Air Conditioning and Refrigeration Association of New Zealand (ARANZ), which indicates a commitment to professional standards.
When to Call a Professional
Always use a licensed professional for heat pump installation — there is no legal DIY pathway for this work in New Zealand. Attempting to connect electrical wiring yourself or handle refrigerants without a licence is illegal and dangerous. If you're unsure whether an installer is properly qualified, don't proceed until you've verified their credentials on the EWRB register.
You can find qualified, vetted heat pump installers in your area right here on tradedirectory.co.nz.
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