Why checking credentials matters
A heat pump can be a great investment for year-round comfort in New Zealand homes, but installation quality matters just as much as the unit itself. A poorly installed system may be noisy, inefficient, prone to leaks, or expensive to run. In some cases, the work can also be non-compliant, which can create safety risks and headaches when you sell the property or make an insurance claim.
The important thing to know is that a “heat pump installer” is not always a single regulated trade in New Zealand. Depending on the job, installation may involve:
- electrical work
- refrigeration or air-conditioning work
- building or carpentry work for mounting and penetration details
- sometimes drainage or condensate management
That means you should not just ask, “Have you installed heat pumps before?” You should check whether the person doing each part of the job is properly licensed or supervised where required.
What qualifications and licences matter in NZ
For most residential heat pump installations, the main credentials to look for are related to electrical and refrigeration work. The exact requirements depend on the system and the scope of the install.
| Work involved | What to check | Relevant NZ body |
|---|---|---|
| Electrical connection, isolation, or alterations | Registered electrician and appropriate practising licence | Electrical Workers Registration Board (EWRB) |
| Refrigerant handling, pipework, commissioning, leak checks | Refrigeration/air conditioning qualification and, where relevant, authorised refrigerant handling credentials | Competenz / industry training; refrigerant compliance through approved schemes and employer processes |
| Building penetrations, mounting pads, bracket fixing, weatherproofing | Competent builder/installer; building consent may be needed in some cases | Local council / Building Consent Authority |
| Gas work on heating appliances or combined systems | Licensed gasfitter, where gasfitting is involved | Plumbers, Gasfitters and Drainlayers Board (PGDB) |
Not every heat pump installation requires a separate building consent, but some situations do. For example, if the work affects structural elements, creates major exterior alterations, or is part of a larger renovation, check with your local council before work starts.
The key NZ licence to verify: the electrician
In New Zealand, electrical work is regulated by the Electrical Workers Registration Board (EWRB). If your heat pump needs hardwiring, isolation work, or any electrical connection beyond simple plug-in use, the person doing it must be appropriately registered and hold a current practising licence for that class of work.
Ask for:
- the installer’s full name
- their registration number
- their current practising licence details
- confirmation that they are licensed for the specific electrical work involved
You can verify an electrician on the EWRB public register. This lets you check whether the person is actually registered and whether their practising licence is current. Do not rely on a van sign, website logo, or a verbal claim alone.
If the installer says a “mate who is an electrician” will come and do the wiring, ask the same questions for that person too. The actual person carrying out the regulated work is what matters.
Refrigeration and air-conditioning credentials: what to look for
A heat pump is an air-conditioning system, so refrigeration knowledge is important. While not every aspect of heat pump installation is regulated the same way as electrical work, you should still check that the installer has the right training and experience for refrigerant systems.
Useful evidence includes:
- a refrigeration and air-conditioning trade qualification or apprenticeship record
- membership of a recognised industry organisation
- manufacturer training on the brand or model being installed
- evidence they routinely install split or multi-split systems, not just general handyman work
Ask whether they handle:
- pipe flaring and vacuum testing
- pressure testing
- refrigerant line evacuation
- commissioning to manufacturer specifications
- fault-finding and warranty registration
This is especially important because many manufacturer warranties depend on the unit being installed and commissioned correctly. If the job is done badly, you may later struggle to get warranty support.
When the work must be done by a registered gasfitter or plumber
Most standard heat pumps do not involve gas fitting. However, if the system is part of a gas appliance installation, hydronic heating setup, or another appliance with gas connections, only a suitably licensed person should do that work.
Plumbing, gasfitting and drainlaying are restricted trades in New Zealand under the PGDB regime. If gas work is involved, check the installer’s licence on the PGDB register and ask which parts of the job they are licensed to carry out.
Also be wary of anyone offering to “just connect it up” if the job includes gas, condensate drainage or other restricted work. If in doubt, ask them to explain exactly what they are licensed for and where the line is between their work and work by another licensed trade.
How to verify an installer before you hire them
A proper check should take only a few minutes, and it can save you from costly mistakes later.
1. Ask for their licence details in writing
Request the following before accepting a quote:
- full legal name
- company name and NZBN if they operate as a business
- registration/licence number
- expiry date of any practising licence
- which parts of the job they will personally do
- whether any subcontractors will be used
A reputable installer should have no issue providing this.
2. Check the public registers
Use the official public register for the trade involved:
- EWRB for electricians
- PGDB for plumbers, gasfitters and drainlayers if gas or other restricted work is involved
Look for:
- current status
- correct name
- licence class or scope
- whether the licence is current
- any conditions or disciplinary history shown on the register, if applicable
If the person’s name is not on the register, stop and ask questions. If they are registered but the licence is expired, they should not be carrying out the regulated work.
3. Check insurance and workmanship cover
Ask whether the business has:
- public liability insurance
- cover for damage caused during installation
- workmanship guarantee or installation warranty
Insurance does not replace a licence, but it does protect you if something goes wrong during the job.
4. Confirm who will issue the paperwork
For electrical work, you should receive the correct compliance documents after the job is completed. Make sure you understand who is responsible for issuing these and when you will get them.
Ask:
- Will I receive the electrical certificate or record of work?
- Will the heat pump be commissioned and manufacturer warranty registered?
- Will I get manuals, serial numbers and service information?
If the installer avoids paperwork or says it is “not necessary”, treat that as a warning sign.
Questions to ask before you accept a quote
When comparing heat pump quotes, ask each installer the same questions so you can compare like with like:
- Are you the person doing the electrical work, or will you use a subcontractor?
- Are you registered with the EWRB?
- What practising licence do you hold, and is it current?
- Do you have refrigeration and air-conditioning experience with this type of unit?
- Will you pressure test, vacuum, and commission the system?
- Do you include bracket installation, weatherproofing and pipe covers in the price?
- Are any council consents or body corporate approvals needed?
- What warranty do you provide on installation labour?
Also ask for a written quote that clearly states what is included and excluded. In the NZ market, heat pump quotes can vary quite a bit depending on access, pipe length, wall type, electrical upgrades and whether the unit is single-room or multi-room.
Warning signs the installer may not be properly qualified
Be cautious if you notice any of these:
- they cannot provide a registration number or licence details
- they say electrical work can be done “on the side” without paperwork
- they are vague about who will do the wiring or commissioning
- they refuse to put the quote in writing
- they offer a price that is far below other quotes without explaining why
- they cannot explain how the condensate will drain safely
- they do not mention testing, commissioning or warranty registration
A cheap install can become expensive fast if the system leaks, trips breakers, rattles on the wall, or underperforms through a cold South Island winter or a damp Auckland summer.
Do you need council approval or a building consent?
Not always, but it is worth checking. Some heat pump installs are straightforward and do not need a building consent. Others may require approval if they involve significant structural changes, fire-rated walls, heritage buildings, apartment body corporate rules, or exterior work that affects the building envelope.
Before work begins, ask your installer whether the job is likely to need:
- a building consent
- resource consent or heritage approval
- approval from your landlord, body corporate, or property manager
If you are in a newer townhouse or apartment complex, there may also be rules around outside units, noise, and placement of pipework. Confirm these before paying a deposit.
A simple pre-hire checklist for homeowners
Use this quick checklist before you sign:
- Get at least two or three written quotes.
- Check the installer’s name on the relevant NZ register.
- Confirm who will do the electrical work and what licence they hold.
- Ask about refrigeration/commissioning experience.
- Confirm whether any building consent or other approval is needed.
- Check insurance, warranty, and workmanship cover.
- Make sure the quote clearly states the exact unit, install method, and any extras.
If an installer passes these checks, you are far more likely to get a safe, compliant, efficient heat pump installation that performs properly from day one.
Why it is worth taking the time
Heat pumps are one of the most common home comfort upgrades in New Zealand, but good results depend on proper installation. The right installer will not just hang the indoor unit and call it done — they will understand electrical compliance, refrigerant handling, drainage, placement, and commissioning.
Taking 10 minutes to check licences and registrations can help you avoid voided warranties, unsafe wiring, poor performance and expensive call-backs. It also gives you more confidence that the job will be done to the standard your home deserves.
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