Why heat pump scams happen in New Zealand Heat pumps are one of the most popular home upgrades in New Zealand because they’re efficient, useful in both winter and summer, and often cheaper to run than older heating options. That demand creates opportunities for dodgy operators to rush jobs, overcharge, or cut corners.
Scams are more common when homeowners are under pressure: a cold snap in winter, a broken unit in peak summer, or a landlord wanting a quick replacement before tenants move in. Some installers rely on urgency, technical jargon, or a low “from” price to get a signature before you’ve had time to compare options.
The good news is that most problems can be avoided with a few checks before you agree to anything.
The most common heat pump installer scams and rip-offs Below are the tactics homeowners in NZ are most likely to run into.
| Scam or rip-off | What it looks like | Why it’s a problem | |---|---|---| | Bait-and-switch pricing | A very low phone quote, then extra charges for “standard” work once the installer arrives | You end up paying much more than expected | | Overselling the unit | Being told you need a much larger or more expensive heat pump than your home requires | Higher upfront cost and possibly worse efficiency | | Hidden install extras | Wall brackets, electrical upgrades, condensate pump, or scaffolding suddenly appear as add-ons | The quote was not complete or transparent | | Poor workmanship | Bad placement, messy pipework, leaking drains, or noisy operation | Reduced performance, future repairs, or safety issues | | Unlicensed electrical or gas work | Someone does work they are not legally allowed to do | Unsafe installation and possible insurance issues | | Pressure selling | “Today only” discounts, threats that rebates will disappear, or claims stock is limited when that’s not true | You lose the chance to compare properly | | Fake warranties or unclear after-sales support | “10-year warranty” that depends on difficult conditions or isn’t backed properly in NZ | You may have no practical cover when something fails | | Cash-only or no invoice | Installer wants cash upfront and avoids written paperwork | Harder to prove what was agreed if there’s a dispute |
Red flags to watch for before you sign A trustworthy heat pump installer should be happy to answer questions and provide a written quote. Be cautious if you see any of these warning signs:
- They refuse to give a written quote or scope of work. - They won’t explain exactly what is included and excluded. - They push you to decide immediately. - They cannot show trade credentials or business details. - They are vague about who will do the electrical work. - They promise a heating size or brand without doing a proper assessment. - They say consent, electrical compliance, or other paperwork is “not necessary” when it clearly may be. - They ask for a large deposit with no clear delivery date. - Their online reviews look fake, repetitive, or all posted in a short burst.
For a typical home, proper sizing and installation matter just as much as the brand name. A cheap unit installed badly can cost more over time through poor efficiency, noisy operation, and ongoing repair bills.
Know what work is regulated in NZ Heat pump installation is not just a straightforward appliance swap. Several parts of the job can fall under regulated trades or council requirements.
Electrical work Any wiring connection, circuit changes, isolator installation, or switchboard work must be done by a licensed electrician or other properly authorised person under the Electrical Workers Registration Board (EWRB) rules. Ask who will do the electrical work and whether they will provide a record of electrical safety work, where applicable.
Plumbing and gasfitting If the job involves plumbing or gasfitting-related work, those tasks are restricted work and must be done by someone authorised under the Plumbers, Gasfitters and Drainlayers Board (PGDB) framework.
Building work and council consent Most standard heat pump installations do not need a building consent, but some situations may trigger council requirements. For example, structural changes, major penetrations, unusual mounting, external condensers in tricky locations, or work affecting a building’s weather-tightness may need checking. If you’re unsure, ask the installer to explain whether any local council consent or approval is needed before work starts.
A legitimate installer will not brush off these issues. They should know when specialist trades or council checks are required.
How to check an installer properly Before you hire anyone, do these practical checks.
1. Get at least three written quotes Ask for itemised quotes that show:
- the make and model of the heat pump - heating capacity and why it was selected - labour costs - electrical work included or excluded - any extras such as wall brackets, pumps, or scaffolding - GST, if not already included - warranty terms and who provides them - expected start and finish dates
If one quote is far below the others, treat it with caution. It may be leaving out work that will become an expensive “variation” later.
2. Verify credentials Ask for:
- the company’s legal name and NZBN - the name and registration details of the electrician who will do the electrical work - proof of insurance, including public liability if available - membership of any relevant trade organisations, if they claim it - references from recent local jobs
You can also check a business’s reputation through independent reviews, not just the testimonials on its own website.
3. Confirm the site visit was real A proper installer should usually inspect the home or at least ask detailed questions about:
- room size and layout - insulation and glazing - existing heating - wall type and pipe run length - outdoor unit location - access for the installation crew
Be wary of anyone who recommends a system purely from photos and a quick phone call, unless the job is very straightforward.
4. Understand the warranty Ask what is covered by the manufacturer and what is covered by the installer.
Important questions include:
- Does the warranty require regular servicing? - Is the warranty valid in New Zealand? - Who handles the claim if there is a problem? - What happens if the installer stops trading?
A long warranty is only useful if the company and manufacturer actually honour it.
Common quote tricks that cost homeowners money Some rip-offs are not outright fraud, but they still leave you out of pocket.
“From $X” advertising A low headline price may only apply to a small, easy job. If your house has a long pipe run, tricky roof space, or a hard-to-access outside wall, the real cost can be much higher. Ask for a quote based on your actual property, not a generic starting price.
Undersized or oversized units A unit that is too small will struggle in a cold southerly or on a frosty South Island morning. A unit that is too large may cycle on and off too often, wasting power and reducing comfort. Ask the installer to explain how they sized it for your home.
Inflated “emergency” call-out charges If your heat pump fails in winter, some businesses may push premium pricing for urgent replacement. It can be fair to pay more for urgent work, but always ask for the price in writing before agreeing.
Unnecessary add-ons Some extras are genuinely needed. Others may not be. Ask why each extra is required and whether there are lower-cost options that still meet the standard.
How to protect yourself during the job Once you choose an installer, keep the paper trail tidy.
- Use email or text for key decisions so you have a record. - Never rely on verbal promises about price, date, or warranty. - Ask for a written variation before approving any extra work. - Don’t pay the full amount upfront unless there is a very clear reason and a strong written contract. - Keep copies of the quote, invoice, warranty documents, and any compliance paperwork. - Take photos of the installation before the team leaves, especially pipework, mounting, and the outdoor unit position.
If the installer is arranging disposal of your old unit, check whether that is included in the price or charged separately.
What to do if you think you’ve been ripped off If something has gone wrong, act quickly and calmly.
Step 1: Document the problem Take photos or videos, save texts and emails, and write down dates, times, and the names of the people involved. If the unit is not performing properly, note the symptoms.
Step 2: Raise the issue with the installer in writing Explain clearly what was promised and what has happened instead. Ask for a remedy, which might include fixing the problem, completing incomplete work, or refunding part of the cost.
Step 3: Refer to the Consumer Guarantees Act where relevant If the installer is acting in trade, the service should generally be carried out with reasonable care and skill and within a reasonable time. If goods are supplied, they should also be of acceptable quality and fit for purpose. You may have rights even if the installer says the job is “final”.
Step 4: Escalate if needed If the company does not respond or refuses to help, consider:
- your bank or card provider, if you paid by card and there may be a chargeback option - the Citizens Advice Bureau for practical guidance - Disputes Tribunal for smaller claims - the Electrical Workers Registration Board or Plumbers, Gasfitters and Drainlayers Board if you suspect unqualified regulated work - your local council if consent or compliance issues are involved - the Commerce Commission if you believe there has been misleading conduct
If the work looks unsafe, stop using the unit and get a qualified professional to inspect it.
When a cheap quote is actually the expensive option A low quote can be fine if the scope is clear and the installer is properly qualified. But in heat pump work, the cheapest option often becomes expensive when:
- the system is badly sized - the indoor unit is placed badly and doesn’t heat the room evenly - the outdoor unit is noisy or poorly supported - electrics are upgraded poorly or not at all - drainage is wrong and causes leaks or damp - the installer disappears when something goes wrong
In NZ’s variable climate, especially in colder regions or older homes with poor insulation, a good installation often matters more than a bargain price.
The safest way to hire a heat pump installer If you want to reduce risk, keep this simple checklist in mind:
- get at least three written quotes - check the installer’s legal business details and trade credentials - confirm who will do any electrical or plumbing-related work - ask what is excluded from the price - make sure the unit is correctly sized for your home - insist on clear warranty terms and a written invoice - never be rushed into signing on the day
A reliable installer will welcome those questions. If they get defensive, that is often your answer.
Final thoughts Heat pumps are a valuable investment for Kiwi homes, but only if they’re sold and installed properly. Most scams rely on pressure, vague paperwork, and homeowners not knowing what should be included in a legitimate installation.
Take your time, compare written quotes, check licences and paperwork, and ask awkward questions before money changes hands. It’s much easier to avoid a bad job than to fix one later.