At McClelland Refrigeration, we’ve been installing and servicing heat pumps across Dunedin and Otago since 1990, and a growing share of that work now comes from landlords getting their rental properties compliant with the Healthy Homes Standards.
We keep having a version of the same conversation with landlords in South Dunedin. They installed a heat pump some years back, assumed it ticked the compliance box, and only found out otherwise when a tenant asked for the paperwork or a routine inspection turned up a problem. The heat pump was real, it worked, it just wasn’t sized to legally heat the room it was installed in.
That’s the part of Healthy Homes compliance we see catch people out most often, so it’s worth explaining properly.
Key Takeaways
- Every private rental in New Zealand has had to comply with the Healthy Homes Standards since 1 July 2025. Compliance is now continuous, not a deadline you’re working towards.
- The most common failure is a heat pump that’s undersized for the legally required heating capacity of the room.
- Heating capacity has to be calculated for the specific room, not estimated from the unit’s box size or brand name.
- If an existing rental heater needs replacing due to wear and tear, the replacement must meet current heating capacity rules, not just match what was there before.
- Non-compliance can bring financial penalties of up to $7,200 for individual landlords, and up to $50,000 for landlords with six or more tenancies.
- We provide certified heating capacity calculations and compliant installations for South Dunedin rentals as standard, not as an add-on.
Compliance Is No Longer a Deadline, It’s the Standard
For a few years, Healthy Homes compliance had a countdown attached to it. Landlords had 90 or 120 days from a new or renewed tenancy to get their property up to standard, and a lot of the advice out there, including some of our own, was written around that timeline.
That countdown is gone. Since 1 July 2025, every private rental in the country has to meet all five Healthy Homes Standards at all times, regardless of when the tenancy started or how long the current heater has been in place. There’s no grace period left to lean on. If a property is being rented out today, it needs to be compliant today.
For landlords who sorted their heating a few years ago and haven’t thought about it since, that’s exactly the gap worth checking, because compliance isn’t something you tick off once and forget.
Where the Sizing Calculation Goes Wrong
The heating standard itself is simple to state: rentals need one or more fixed heaters capable of heating the main living room to at least 18°C, and that heater has to meet a minimum heating capacity calculated specifically for that room.
The calculation is where things go sideways. It depends on the room’s floor area, ceiling height, insulation, window size and orientation, producing a kW figure the installed heater has to meet or exceed.
A heat pump that looks like a sensible, mid-range unit can still fall short, particularly in older South Dunedin homes with higher stud heights, single glazing, or limited insulation, which describes a lot of the local housing stock we work in.
We see this most often when a heat pump was installed without that room-specific calculation ever being run, just a general sense of “this size should do it.” It might heat the room adequately in everyday use, while still falling short of the legal minimum, and that’s the figure a Tenancy Tribunal dispute would actually test.
Three Situations That Bring This to a Head
Buying or taking over a rental property. An existing heat pump doesn’t tell you much on its own. We’d always recommend having the heating capacity checked against the room before assuming it’s compliant, rather than after a tenant raises it. Our guide on choosing the right heat pump for Dunedin conditions covers the other property-specific factors worth understanding at the same time.
Replacing a heater that’s reached the end of its life. Once a heat pump needs replacing due to wear and tear, its replacement has to meet the current heating capacity requirement, not simply match the unit it’s swapping out. Our piece on heat pump running costs in Dunedin explains why units a decade or older are usually the ones worth reviewing first.
A tenant complaint or Tribunal dispute. A signed compliance statement is required in every tenancy agreement, and tenants can request the underlying compliance information within 21 days. Without a proper capacity calculation on file, there’s nothing solid to produce if that request comes in.
What a Properly Compliant Installation Looks Like
Our process for rental heating starts with the room, not the heat pump. We run the heating capacity calculation for the specific space first, then select a unit that meets or exceeds it, with a thermostat and an acceptable heater type under the standard. We provide the documentation landlords need to keep on file, including the calculated capacity and how it was reached, so there’s a clear paper trail if it’s ever questioned.
We’ve built this into our standard heat pump service for Dunedin rentals, because we’d rather get it right the first time than have a landlord call us back after a failed inspection.
The Cost of Getting It Wrong
The financial exposure is real. Landlords can face penalties of up to $7,200 for failing to meet Healthy Homes obligations, rising to $50,000 for landlords with six or more tenancies. Leaving the compliance statement out of a tenancy agreement carries its own separate penalty of up to $500 per tenancy.
On top of the formal penalties, there’s the practical cost of a dispute dragging on, a tenant withholding rent, or a property sitting vacant while the heating gets sorted properly.
Why This Matters More in South Dunedin
South Dunedin’s rental stock skews older, with villas, bungalows and post-war housing that wasn’t built with modern heating capacity in mind. Combined with the area’s cold, damp winters, undersized heating is a genuine comfort problem for tenants, not just a paperwork issue for landlords. Getting the sizing right the first time solves both at once.
Get Your Rental Heating Checked Properly
If you’re not confident your South Dunedin rental would hold up to a proper heating capacity check, it’s worth finding out before a tenant or the Tribunal does it for you. We’ll assess the room, run the calculation, and give you a clear answer along with a compliant solution if one’s needed.
Call us on 03 477 0088, request a heat pump service or get in touch with any questions.
Frequently Asked Questions
Do I need a professional assessment to prove my rental is compliant?
Landlords can self-assess, as there’s no government-issued certificate. An independent, documented assessment gives you solid evidence if a dispute reaches the Tenancy Tribunal.
What size heat pump do I need for Healthy Homes compliance?
There’s no single answer. It depends on the room’s floor area, ceiling height, insulation and glazing, calculated using the heating assessment formula rather than estimated from unit size.
My rental’s heat pump still works fine. Does it need replacing?
Not necessarily, but it’s worth checking whether it meets the required capacity for the room. A working heat pump and a compliant one aren’t always the same thing.
Can any heat pump installer do the compliance calculation?
Any installer can fit a unit, but not all run the room-specific capacity calculation as standard. Worth asking before booking the job.
