Why choosing the right installer matters
A heat pump is only as good as the way it’s specified and installed. In New Zealand, a poorly installed unit can mean higher power bills, uneven heating and cooling, excess noise, water leaks, and a shorter lifespan. In some cases, a bad install can also create compliance problems if electrical or plumbing/refrigerant work isn’t handled correctly.
That’s why it pays to treat the installer search as carefully as the product search. The cheapest quote is not always the best value, especially if it skips proper sizing, commissioning, or after-sales support.
Start with word of mouth, then widen your search
The best place to begin is often people you already trust.
Ask:
- Friends, family, neighbours, and workmates who have had a heat pump installed recently
- A property manager or landlord if you’re comparing models for a rental property
- Local builders, electricians, or renovation professionals you’ve used before
- Neighbours with a similar house layout, insulation level, or floor area
Word of mouth is useful because it gives you real-world feedback on punctuality, communication, tidiness, and how the installer handled any follow-up issues. Ask not just whether they “liked” the installer, but:
- Did the installer turn up when promised?
- Was the quote detailed and clear?
- Did they explain where the unit would go and why?
- Was the job finished neatly?
- Were there any surprises in the final bill?
- Has the system performed well through summer and winter?
A recommendation is a good start, but it should still be backed up with checks.
Use directories and manufacturer finders, but don’t stop there
Online directories can help you build a shortlist quickly, especially if you’re outside a major centre or want to compare several installers.
Useful places to look include:
- Local business directories and trade listing websites
- Heat pump brand websites that list authorised or preferred installers
- Membership listings from trade organisations
- Community Facebook groups or neighbourhood forums, used carefully as a starting point rather than proof of quality
Directories are handy, but they are not a guarantee. Some simply list paying advertisers. Treat them as a lead source, then verify the business properly before you book anything.
Check the credentials that matter in New Zealand
Heat pump installation often involves multiple parts of a job, and different parts may be regulated.
Here’s a simple guide to what you should check:
| Work involved | What to check | Why it matters |
|---|---|---|
| Electrical connections | The installer, or the electrician they use, should be appropriately registered and licensed through the EWRB | Electrical work in NZ is regulated and must be done by a competent, authorised person |
| Plumbing/gasfitting/drainlaying elements, if any | Check for the relevant licence through the PGDB | Some associated work is restricted work under NZ law |
| Building-related alterations | Ask whether the job needs building consent or council approval | Some installations, penetrations, or structural changes may require consent depending on the scope |
| Refrigerant handling and commissioning | Ask who will handle the refrigerant side and what qualifications they have | Proper handling affects performance, safety, and compliance |
A good installer should be able to explain exactly who will do each part of the job and whether any of it is subcontracted.
You can also ask whether they:
- Are a member of a recognised industry association
- Carry public liability insurance
- Offer a workmanship guarantee
- Have recent experience with your type of property, such as a villa, townhouse, newer build, or rural home
Do not rely on a logo on a website alone. Ask for licence details if relevant, and verify them independently where possible.
Look for proof of experience, not just “years in business”
A company may have been trading for a long time but still not be the right fit for your job. What matters is relevant experience.
Look for signs such as:
- Photos of completed jobs that match your home type
- Case studies or project descriptions with clear detail
- Experience installing the brand or model you are considering
- Familiarity with difficult layouts, such as open-plan living areas, high-stud ceilings, or multi-storey homes
- Experience with both heating and cooling needs in New Zealand conditions
New Zealand homes vary a lot. A good installer should understand that a heat pump for a compact, insulated home in Christchurch may not need the same setup as a draughty older house in Dunedin, a coastal property in Tauranga, or a poorly insulated rental in South Auckland. Local climate, sun exposure, roof structure, and room layout all matter.
What a good installer should ask you first
A reputable heat pump installer will usually want to gather information before they quote. If they jump straight to a price without asking questions, that’s a warning sign.
Expect them to ask about:
- The size and layout of the room or rooms
- Whether you want heating only, or heating and cooling
- Insulation, ceiling height, and how draughty the home is
- Window size and sun exposure
- Where you want the indoor unit and outdoor unit located
- Noise sensitivity, especially for bedrooms or neighbouring properties
- Your existing electrical setup and switchboard capacity
- Any access issues, such as steep driveways, tight side access, or high walls
A good installer may also suggest an on-site visit before quoting. That is usually a positive sign, because heat pump sizing and placement are too important to guess.
Red flags to watch for
Some installers are simply overbooked, while others are cutting corners. Either way, avoid anyone who shows these signs:
- Refuses to provide a written quote
- Gives a very low price without inspecting the site
- Pushes one brand without explaining alternatives
- Cannot explain how the unit was sized for your room
- Is vague about who will do the electrical work
- Cannot show insurance, licence details, or business information
- Pressures you to sign immediately with “today only” pricing
- Ignores questions about noise, drainage, or maintenance access
- Has many recent complaints about no-shows, delays, or poor communication
If you feel rushed before the job has even started, it’s often a bad sign for what comes after.
Compare more than price when you get quotes
Always get at least two, and preferably three, written quotes. The aim is not just to find the cheapest option; it’s to compare what is actually included.
A good quote should ideally spell out:
- Brand and model of heat pump
- Heating and cooling capacity
- Installation location
- Pipework length included
- Electrical work included or excluded
- Any wall bracket, pad, or extra fittings
- Condensate drainage arrangements
- Travel or call-out charges, if any
- Warranty terms for the unit and workmanship
- Whether removal of an old unit is included
- GST and a clear total in NZD
If one quote is much lower than the others, find out why. It may exclude essential work, use a cheaper model, or leave you exposed to add-on costs later.
Check online reviews carefully
Reviews can be helpful, but they need to be read critically.
Look for patterns across multiple reviews rather than one glowing or angry comment. Useful signs include:
- Consistent praise for punctuality and communication
- Mentions of neat workmanship and tidy cleanup
- Clear descriptions of how the installer handled problems
- Reviews that mention follow-up service months later
Be cautious if:
- All reviews are extremely vague or sound similar
- There are many reviews posted in a short period
- Complaints about unfinished work, poor cleanup, or billing disputes appear repeatedly
Also remember that a small number of negative reviews does not automatically rule a business out. What matters is how they respond. A professional business will usually reply politely and try to resolve issues.
Ask about after-sales support and maintenance
A heat pump is not a one-off purchase. It needs periodic cleaning and sometimes servicing to keep operating efficiently.
Before you hire, ask:
- Who do I contact if something goes wrong after installation?
- Is there a workmanship guarantee, and how long does it last?
- Do you provide service or only installation?
- What maintenance do you recommend, and how often?
- Will you show me basic filter cleaning and operation at handover?
A good installer should explain how to use the unit properly, including thermostat settings, modes, and filter maintenance. They should leave the job with the system operating correctly and the site clean.
The signs of a genuinely good heat pump installer
In practice, good installers tend to share the same habits.
They will:
- Listen to your needs before recommending a product
- Visit the site, or at least ask detailed questions before quoting
- Explain the pros and cons of different options in plain English
- Provide a written quote with clear inclusions and exclusions
- Use properly qualified people for regulated work
- Turn up when they say they will, or communicate early if plans change
- Protect floors and walls while working
- Test and commission the system properly
- Leave the property tidy and take away waste
- Stand behind their work if an issue comes up later
They also won’t oversell. If your home only needs a modest unit, a good installer will say so instead of pushing a larger, more expensive system that cycles on and off inefficiently.
A simple hiring process that works
If you want a practical way to narrow the field, use this process:
- Ask for two or three personal recommendations.
- Search local directories and manufacturer listings to widen your shortlist.
- Check reviews, licence details, insurance, and business information.
- Invite two or three installers to quote in writing.
- Compare what is included, not just the final number.
- Choose the installer who is clear, credible, and responsive.
- Keep the quote, warranty details, and any compliance paperwork.
For many homeowners, the best value comes from the installer who communicates well, understands NZ homes, and is transparent about the whole job from start to finish.
Final thoughts
Finding a good heat pump installer in New Zealand is about reducing risk before the work begins. Use word of mouth, check reviews with a critical eye, verify the right credentials, and insist on a proper written quote. If an installer is professional, specific, and easy to deal with from the outset, that’s usually a strong sign they’ll deliver a better result in your home.
Take your time, ask sensible questions, and compare a few options. A well-chosen installer can make the difference between a heat pump that simply works and one that performs efficiently for years.
ISO 9001
