A ducted heat pump in Wellington typically costs between $8,640 and $21,600 including GST in 2026 for supply and installation, with most standard mid-size homes landing around $11,000 to $17,000 including GST. Larger homes with multiple zones, long duct runs or extra electrical work can push past $20,000 including GST, while a smaller or more constrained install can sit nearer $7,700 including GST. The single biggest reason two quotes differ is scope: whether the price covers just the unit and a basic install, or the full job including ducting, zoning, controls and site complexity. This guide breaks down what you actually pay, what moves the number, and how to compare quotes with confidence.
How much does a ducted heat pump cost in NZ?
A ducted heat pump in New Zealand generally costs from around $8,000 to over $21,000 including GST for supply and installation, depending on home size and complexity. For a fairly standard setup, a benchmark of $11,000 to $17,000 including GST is common enough to be useful when you are reading quotes. Anything much below $8,000 including GST usually points to a smaller or more constrained job, and anything above $20,000 including GST signals a large or complex whole-home system.
Named provider pricing supports this range. One NZ supplier lists Daikin ducted systems from $11,042.99 to $17,173.99 including GST and Fujitsu ducted systems from $8,474.99 to $15,245.99 including GST. Another quotes an 8 kW ducted heat pump from $7,700 including GST as an indicative starting point, while a Wellington installer advertises a Fujitsu ducted central heating and cooling system from $11,500 plus GST, which works out to roughly $13,225 including GST before any site-specific extras.
The wide spread is normal for ducted work because every system is custom-designed to the house. When you compare numbers, anchor on the mid-range benchmark and then ask each installer what their figure leaves out. A headline price that looks unusually low almost always excludes ducting length, zoning, controls or electrical work that will appear later. Treat the first number as a starting point for a site visit, not a final cost.
What does a ducted heat pump cost in Wellington specifically?
In Wellington, a realistic 2026 budget for a ducted heat pump is around $8,640 to $21,600 including GST, and some local pricing guides put ducted systems or installs of four or more units in an even higher band of about $16,200 to $37,800 including GST. The gap between these guides reflects how much the final price depends on zoning, duct length, home layout and whether the job is a clean new-build fit-out or a retrofit into an older home.
Wellington’s housing stock pushes many jobs toward the higher end. The city has a large number of older villas and character homes where roof space is cramped, underfloor clearance is tight, and duct runs need to be longer and more carefully planned. A design that would be straightforward in a newer single-level home can become a custom job in a Wellington hillside villa, and that custom work shows up in the labour and materials line of the quote.
As a working example, a three-bedroom Wellington home on the flat with usable ceiling space and an adequate switchboard might land around $12,000 to $15,000 including GST for a zoned ducted system. The same system in an older two-storey home needing long duct runs, vibration isolation and a board upgrade could move toward $18,000 to $22,000 including GST. The lesson is to treat any city-wide figure as a guide and get a price built around your actual home.
What is included in a ducted heat pump quote?
A complete ducted heat pump quote should cover the indoor unit, the outdoor condenser, the insulated ducting, the supply and return vents, zoning controls, the electrical connection, commissioning and testing, and an operating handover. A quote that lists only the unit and a standard install is incomplete for a ducted system, and the missing items are exactly the ones that drive the real cost.
The parts that most often get left off a thin quote are the ducting length and routing, zoning hardware, return-air placement, condensation management and any switchboard upgrade. Each of these is a genuine cost. Insulated ducting runs add materials and labour, zoning lets you avoid heating empty rooms but adds dampers and controls, and an undersized switchboard may need work before the system can run safely. None of these are optional extras dressed up as upsells; they are part of a system that works properly.
When you read a quote, look for a line-by-line breakdown rather than a single lump sum. A trustworthy quote will name the brand and model of the indoor and outdoor units, the kilowatt capacity, the number of zones, the approximate duct run, and whether electrical work is included or excluded. If a quote is vague on these points, ask for them in writing before you compare it against anyone else’s. Clear scope is the only fair basis for comparison.
What factors push the price up or down?
The factors that move a ducted heat pump price the most are duct length and routing, the number of outlets and zones, roof or underfloor access, brand choice, pipe lengths, and whether the switchboard needs upgrading. Single-level homes with easy ceiling access sit at the lower end, while multi-level or older homes with long, awkward runs sit at the higher end. Each factor stacks, so two homes of similar size can differ by several thousand dollars including GST.
Zoning is a common swing factor. A basic single-zone ducted system is cheaper, but adding zones so different parts of the house can be set to different temperatures increases both the comfort and the price. Electrical work is another. If your existing switchboard is undersized, an upgrade can add a meaningful cost on top of the system itself, and it is often discovered only at the site assessment rather than the phone enquiry.
Brand and capacity also matter. A larger kilowatt system for a bigger home costs more in both equipment and labour, and premium brands sit above value brands at the same capacity. As a rough hierarchy, a small constrained install can start near $7,700 including GST, a standard zoned system sits around $11,000 to $17,000 including GST, and a large multi-zone whole-home system runs to $20,000 or more including GST. Knowing which band your home falls into before you call helps you read quotes realistically.
How does a ducted heat pump compare to split and multi-split systems on cost?
A ducted heat pump is the most expensive option upfront, a single split wall unit is the cheapest, and a multi-split system sits in between. The Energy Efficiency and Conservation Authority, known as EECA, describes single splits as easy to install and cost-effective for one main room, while ducted systems deliver whole-home comfort through discreet ceiling outlets at a higher installation cost. The right choice depends on how much of the house you want to heat and how your home is built.
A single split heats one main room or zone and is the lowest-cost entry point, which suits a living area or a single open-plan space. A multi-split runs several indoor units from one outdoor unit, so you can heat several rooms without the full cost of ducting. A ducted system heats the whole house from one hidden indoor unit with vents in each room, which is the closest thing to central heating and the most discreet, but it carries the cost of the ductwork and zoning.
House layout often decides the value question. EECA guidance notes that homes without easy roof or underfloor access can suit multi-split systems better than ducted, because retrofitting ducts into a cramped older home is expensive. If good ductwork already exists, ducted becomes more affordable; if it does not, new ducting can push the price up materially. For many Wellington homes, a well-placed multi-split plus insulation upgrades is the more practical value choice, while ducted remains the premium option where the house suits it.
Do you need council consent for a ducted heat pump in Wellington?
Most ordinary heat pump installations in Wellington are consent-exempt under Schedule 1 of the Building Act 2004, so a standard ducted install often does not need a building consent. However, MBIE guidance is clear that being exempt from consent does not remove the duty to comply with the Building Code, which is set out in Schedule 1 of the Building Regulations 1992. In short, the question is not only whether you need consent, but whether the work complies with code and council rules.
A building consent through Wellington City Council, which acts as the building consent authority, can be required if the ducted system involves structural changes, significant penetrations or other building work that falls outside the exemption scope. A reputable installer will know when a job crosses that line. The cleanest way to treat it is to check whether the installation is consent-exempt under Schedule 1 first, then confirm the Building Code requirements still apply.
Noise is the other consideration. If the outdoor unit, ducting route or associated works create a noise or land-use issue, Wellington City Council district-plan rules may matter alongside building consent, and the Resource Management Act 1991 can apply where there are effects on neighbours or the environment. MBIE guidance specifically names the Resource Management Act 1991 and local council bylaws as other legislation affecting building work. Placing the outdoor unit thoughtfully, away from bedroom windows and boundaries, keeps you on the right side of these rules.
How long does a ducted heat pump installation take?
A ducted heat pump installation in Wellington usually takes one to two days, and some installers allow up to three days depending on home size, roof access, zoning and any electrical upgrades. Rinnai describes ducted installs as a one to two day job, and that holds for most standard homes. Simpler split systems can be finished in half a day, but a ducted whole-home system is a larger and more involved piece of work.
The realistic sequence runs through a clear set of steps. It starts with an initial enquiry and rough sizing discussion, followed by a home and site assessment to check roof space, duct routes, the outdoor unit location, electrical capacity and airflow layout. From there you get a quote and system design, including whether zoning or extra electrical work is needed. Then comes booking, deposit and scheduling, before the install itself.
On installation day the team fits the indoor unit in the ceiling or underfloor space, runs the ducting, fits the vents, mounts and connects the outdoor unit, completes the wiring, then commissions and tests the system. The job finishes with a handover and an operating walkthrough so you know how to run it efficiently. This sequence matches EECA good-practice design steps, which put a proper assessment before the final quote. If your quote skips the assessment stage and jumps straight to a price, treat that as a warning sign rather than a convenience.
Can grants or subsidies reduce the cost?
Yes. Eligible Wellington homes may qualify for the Warmer Kiwi Homes programme, which can fund a large share of a heat pump and insulation, with a maximum heat pump contribution of $3,450 including GST. For homes that qualify, this can materially change the decision, because the effective out-of-pocket cost of a heating upgrade drops once the subsidy is applied. Eligibility depends on factors set by the programme, so it is worth checking the criteria before you commit to a system.
The way a subsidy interacts with a ducted system is worth understanding. The heat pump contribution is capped, so on a $14,000 ducted job the grant covers a portion rather than the whole cost. Where subsidies tend to make the biggest difference is on smaller single-unit installs, where the capped contribution covers a larger share of the total. For a full ducted system the grant is a helpful offset rather than a transformation of the price.
Because the funded amount and eligibility can shape which system makes sense, the best option for your home is not just about the equipment. A household that qualifies for support and also needs insulation work may find that combining insulation upgrades with a smaller heat pump delivers better value than a full ducted system at full price. Ask your installer whether they work with the programme and what documentation you need, and confirm current eligibility through the official channels rather than relying on a sales conversation.
What is special about installing a ducted heat pump in Wellington?
Wellington installs need more attention to wind, salt exposure, roof-space access and noise control than many other parts of New Zealand. The city’s coastal location makes corrosion protection more important, and NZ guidance specifically recommends corrosion-resistant coils for coastal areas. The windier conditions and tighter, often older housing also make the outdoor unit placement, vibration isolation and clear airflow around the condenser especially important.
Housing stock is the other big factor. Many Wellington homes are older villas or compact builds where roof space is cramped and duct runs are longer, so a standard ducted design can fail if the ceiling space is too tight. NZ guidance recommends locating ducted systems in the ceiling with the supply and return ducts as far apart as practical, and keeping pipe runs short for efficiency. In an older Wellington home, achieving that takes more planning than in a newer, more standard house, which is why local jobs are less cookie-cutter.
In practice this means a few questions are worth asking any Wellington installer directly. Ask about anti-corrosion coatings for the coil if your home is coastal or exposed, about vibration mounts for the outdoor unit, and about how they will manage noise near bedrooms and neighbouring properties. Ask for a proper heat-load assessment rather than a generic quote, and confirm whether the price includes insulated ducting, return-air placement, condensation management and any switchboard upgrade. These details are where Wellington-specific cost and comfort are won or lost.
How do you get an accurate quote and avoid surprises?
The most reliable way to get an accurate ducted heat pump price is to insist on a home assessment and a heat-load calculation before any final number. Ducted systems are custom-designed, and wrong sizing hurts both comfort and running cost, so a figure given over the phone without seeing your home is a guess. A proper assessment looks at your layout, insulation, windows, roof and underfloor access, and electrical capacity, then sizes the system to suit.
When you have two or three written quotes, compare them line by line rather than on the headline price. Check that each one names the indoor and outdoor unit, the kilowatt capacity, the number of zones, the approximate duct run, and whether electrical work and any switchboard upgrade are included or excluded. A lower quote that excludes ducting, zoning or electrical work is not actually cheaper; it just defers those costs. Matching scope across quotes is the only fair comparison.
Use a simple checklist before you sign. Confirm the quote includes insulated ducting, return-air placement, condensation management, zoning controls and commissioning. Confirm whether the price is stated including GST, because every figure you act on should be GST-inclusive. Ask about corrosion protection and vibration mounts if your home is exposed, and ask the installer to confirm whether any consent or council noise consideration applies under Wellington City Council rules. A quote that answers all of these clearly is one you can trust.
Is a ducted heat pump worth the cost?
A ducted heat pump is worth the higher cost when your goal is whole-home comfort, your house suits ducting, and you value discreet outlets over visible wall units. EECA notes that heat pumps are among the lowest-cost heating options to run, so the premium you pay upfront for a ducted system buys both even, whole-house warmth and efficient running over the life of the system. For the right home, that combination justifies the investment.
The decision turns on your home and your budget. If the house has usable roof or underfloor space and you want consistent temperatures across every room, a ducted system at $11,000 to $17,000 including GST for a standard install is a strong long-term choice. If the house is older, retrofit-heavy or hard to duct, a multi-split system or a well-placed single split combined with insulation upgrades often delivers better value, heating the spaces you use most without the full ducting cost.
The practical path is to weigh upfront cost against running cost and comfort, then match the system to your home rather than to a general rule. Get a heat-load assessment, compare like-for-like quotes including GST, check whether you qualify for any subsidy, and confirm the install meets Building Code and Wellington City Council requirements. A ducted system is the premium option, and for a suitable Wellington home it earns its place. For others, a smaller, well-designed system is the smarter spend.