Heat pump installation in Napier
Your installer will size it for your rooms and match the outdoor unit to where you live, because salt at Westshore and hard frost out on the plains wear a machine out in completely different ways.
What it costs
These are fitted prices, so they take in the unit, the brackets, the pipework, the drain, the electrical connection and the testing before anyone leaves. What separates one quote from another is how far the pipework has to travel, how awkward the outdoor spot is to get at, and whether your address needs a unit built for salt.
| Type | Supplied & fitted | Suits |
|---|---|---|
| High-wall bedroom or small room | $2,000 to $3,000 | Around 2.5kW. One room, one wall, in and out inside a morning. |
| High-wall main living area | $2,900 to $4,500 | A 5 to 6kW unit. The commonest job in Napier by a distance. |
| High-wall large or open-plan | $3,900 to $5,800 | A 7 to 8kW unit, for a knocked-through living, dining and kitchen. |
| Multi-split two rooms or more | Quoted per head | Several indoor heads sharing one outdoor unit. Two heads on the same wall price very differently from two at opposite ends of the house. |
| Ducted whole home | $12,000 to $25,000+ | Grilles in the ceiling and nothing on the walls. Wants the roof space, so it rules out a fair few Art Deco places. |
You'll get a firm price once your installer has the right measurements and details of your job. Costs can vary a lot, and the cost page goes into why.
What’s included in the price
Supply and install is handled as one job, so there's no chasing a separate supplier and sparky.
- The heat pump, sized to your room
- An outdoor unit specified for salt or for frost, whichever your address gets
- Wall brackets and a level base for the outdoor unit
- Insulated pipework and the condensate drain
- Electrical connection and certification
- Commissioning and a walk through the controls
- A tidy-up before they leave
- Manufacturer warranty on the unit
How a heat pump installation works
Most single high-wall jobs here are done inside half a day.
Free quote
Give us the suburb, the rooms you want warm, and whether the windows are original. In an Art Deco place that last answer changes the size more than the floor area does.
Site visit
Your installer measures the room, looks at the stud height, and finds a spot outside that suits your end of the district. Near the water that means out of the spray; on the plains it means off the low ground.
The install
Indoor head up, outdoor unit set level, pipework and drain in, wiring connected. The hole through the wall gets sealed properly, which matters more in plaster than in weatherboard, and the lines are vacuumed and tested before any refrigerant goes in.
Commissioning
Someone walks you through the controller before they leave, including the cooling side of it, because in Hawke’s Bay you'll be using that half by February.
Which type of heat pump suits your home
The house decides this more than the budget does. Napier has 1930s plaster with a high stud on one street and a flat-ceilinged new build on the next, and the same unit does a very different job in each.
High-wall
Up near the ceiling, blowing down and across. What goes into most Napier lounges, and the cheapest way to get a room warm.
Floor console
Sits down at skirting level and pushes the heat out low. In a room with a 3-metre stud that's the difference between warm feet and a warm ceiling.
Ceiling cassette
Recessed into the ceiling, throwing air out on all four sides. Suits the open-plan layouts around Taradale, and needs a flat ceiling with space above it.
Multi-split
Two to four indoor heads sharing one outdoor unit. The reason to bother is that you hang one box off the house instead of four, which counts for a lot on a tight site.
Ducted
One system, grilles in every room, nothing visible on a wall. Wants roof space, so it's far easier on a newer build than on a 1930s bungalow.
What size heat pump do you need
Floor area is the starting point, but a high ceiling or the original single glazing will push a Napier room up a size, and plenty of houses here have both.
Bedroom or small room
About 2.5kW.
Living area
5 to 6kW.
Large or open-plan
7 to 8kW.
Start there, then add capacity for a high stud, original single glazing, or a west-facing wall of windows.
Why a high ceiling costs you a size
Warm air rises and then stays up there. In a 1930s room with a 3-metre stud, a fair share of everything the unit produces collects in the top half metre where nobody is sitting, and the thermostat down at head height never sees it. You're paying to heat the space above the picture rail.
That's why the floor console argument comes up so often in this city. It puts the same heat into the room from down at skirting level, so it reaches you before it climbs.
And why original glass costs you another
A single pane sheds heat roughly ten times faster than an insulated wall of the same size. A front room with a big original window is losing warmth about as quickly as a modestly sized unit can supply it, which is why a well-chosen unit in a Marewa state house can outperform a bigger one in an Art Deco place with the windows still in.
Oversizing isn't the safe way out of that, either. A unit with too much capacity reaches the set temperature in a rush, switches off before it has taken any moisture out of the air, and leaves the room warm and faintly damp.
Run your own numbers through the sizing calculator, then let whoever quotes it measure the stud height for themselves.
Replacing an old heat pump
Near the coast, the part that fails is nearly always the outdoor unit.
The giveaway is a unit that still runs but has quietly got worse: longer to warm the room, a power bill creeping up, the outdoor fan running more than it used to. Once the metal on the outside has gone, no amount of servicing brings the performance back.
A replacement can often reuse what is already on the wall. Brackets, pipework and cable that are the right size and in sound condition stay, and that takes a real chunk off the quote. Pipework carrying the residue of an older refrigerant doesn't, because leaving it shortens the life of whatever goes in next.
Changing the unit is also the cheapest chance you'll get to change where it lives. If the last one was put on the seaward wall because that was the short way through, moving it round the house costs a few hundred now and saves an early replacement later.
Worth knowing up front: ask what the outdoor unit is specified for. The back of it is packed with thin aluminium fins, and salt corrodes them, so within a few streets of the water a coated one is the difference between a unit that lasts its warranty and one that doesn't. Out on the plains that matters far less than how quickly it clears frost and gets back to heating.
Consent and electrical work
A high-wall going into an existing house isn't building work, so there's no building consent to get. Ducted going into a new build or a serious renovation is usually covered by the consent the building work already has.
Napier is the one place in the country where the heritage question comes up on ordinary houses. A listed Art Deco property, or one inside a character area, can have rules about what is allowed to hang off an elevation that faces the street. It rarely stops the job and it frequently moves the outdoor unit, so it's a question for the site visit rather than for install day. Napier City Council holds the list.
The electrical side is certified by a registered electrician and the refrigerant side is handled under an approved filler licence. Neither is optional, and between them they are why this isn't a weekend project.
Looking after your heat pump
A heat pump in Hawke’s Bay works most of the year, heating through winter and cooling through a summer that gets genuinely hot and dry. Two seasons of use means the filters fill twice as fast as they would somewhere you only run it in July.
Clearing them is a two-minute job and it's yours. Lift the front panel, slide the filters out, rinse them under the tap, let them dry. Do it monthly while it's working hard. A choked filter makes the unit run longer for less heat, and you pay for the difference.
Outside, the rinse only matters if you're near the water. A hose over the back of the unit a couple of times a year washes off the salt before it has time to work into the metal. Further inland there's nothing much to wash off.
Anything past that is a job for someone with gauges: ice that won't clear, a breaker that trips, water inside, air that's not properly warm, or a noise that was not there last year. The annual service is when the charge and the electrics get checked properly.
Common questions about heat pump installation
How much does heat pump installation cost in Napier?
Fitted, roughly $2,000 to $3,000 for a bedroom, $2,900 to $4,500 for a main living area and $3,900 to $5,800 for something large or open-plan, with whole-home ducted from about $12,000. Inside those figures it's the distance the pipework travels, how reachable the outdoor spot is, and whether your switchboard has a spare circuit.
How long does the job take?
Half a day covers most single high-wall installs. It stretches towards a full day if the pipework has a long way to go, the wall is difficult, or there's more than one unit. Multi-split and ducted are booked as multi-day jobs from the start.
Do I need a coastal unit in Napier?
Within a few streets of the water at Ahuriri or Westshore, yes. Salt corrodes the thin aluminium fins on the outdoor unit, and once they crumble it sheds heat poorly and costs more to run. A coated unit costs a little more and lasts a lot longer. Further inland it makes no practical difference, and on the plains how quickly a unit clears frost matters more.
Why does my outdoor unit ice up on a frosty morning?
Every heat pump has to melt the frost off the outdoor unit now and then, and it stops heating your room while it does. On the Heretaunga Plains, where cold air drains off the hills and settles overnight, that happens more often than it does at the coast, so a unit that clears frost quickly is worth asking for.
Will a heat pump heat a high-ceilinged Art Deco room?
Yes, as long as it's sized for the height rather than the floor plan, because a good share of the warmth collects above head height. Where the stud is very high a floor console frequently heats the room better for the same money, since it delivers the heat at the level you actually occupy.
Can I install one myself?
No. Refrigerant work in New Zealand needs an approved filler licence and the hard-wiring has to be certified by a registered electrician, so a DIY install is both illegal and a straight cancellation of the warranty. Clearing access and agreeing where it goes are yours; the rest isn't.
Does an Art Deco house need consent?
Not for the heat pump itself. What can apply is a heritage listing or a character area rule about the street elevation, which may move the outdoor unit rather than stop the job. Worth checking with Napier City Council before anyone books a date.
What will it add to the power bill?
A right-sized unit warming a living room across a Hawke’s Bay winter usually adds something in the range of $25 to $60 a month, depending how many hours it runs and how much the house leaks. You get three to four units of heat for every unit of electricity, which no plug-in heater comes close to.
Get a price for your place
Send the room, the age of the house and the suburb. Your local installer will size it, specify the right outdoor unit for your end of town, and give you a fixed price.