- High-wall, living area
- $3,200–$4,800 installed
- Ducted, standard home
- $8,000–$15,000 installed
- Multi-split
- $5,000–$12,000 the middle ground
Villas and bungalows are some of the best-loved and hardest-to-heat houses in the country. High studs, timber floors, sash windows and, often, patchy insulation all work against you. The choice between a simple high-wall heat pump and a ducted system comes down to how much of the house you want warm, how the heater looks in a character room, and what the building lets an installer do.
What is the difference between ducted and high-wall heat pumps?
A high-wall split has one indoor unit mounted high on a wall, piped to one outdoor unit. It heats the room it is in. A ducted system hides a larger indoor unit in the ceiling or under the floor and pushes warm air through insulated ducts to grilles in several rooms. A multi-split sits between the two: one outdoor unit feeding several wall or floor units, with no ducting.
How much more does ducted cost than high-wall?
A lot more. Most of the extra is labour and materials for the ducts, not the unit itself. The table uses typical installed price ranges collected in August 2026.
| System | Price range | Typical |
|---|---|---|
| High-wall split, small room (up to ~25 m², ~2.5–3.5 kW) | $2,500–$3,500 | $3,000 |
| High-wall split, living area (~25–45 m², ~5–6 kW) | $3,200–$4,800 | $4,000 |
| High-wall split, large open plan (45 m²+, ~7–9 kW) | $4,500–$6,500 | $5,500 |
| Multi-split (2–5 indoor units) | $5,000–$12,000 | $8,500 |
| Ducted, standard home | $8,000–$15,000 | $12,000 |
| Ducted, large home (5+ zones) | $15,000–$25,000 | $20,000 |
Source: Top5.nz heat pump installation costs, updated August 2026, cross-checked against Varcoe. Your quote depends on access, pipe and duct runs and electrical work.
For a villa, ducted retrofits tend to land towards the upper end of these ranges because access is harder. See our ducted heat pump cost guide for what pushes the price up.
Is ducted less efficient than a high-wall heat pump?
Slightly. Consumer NZ notes that ducted systems lose some heat from the ducts, which makes them a little less efficient than other types. How much depends on duct insulation, how long the runs are and whether the ducts sit in a cold roof space. Zoning, where you only heat the rooms you are using, can offset part of that loss because you are not warming empty bedrooms all evening.
A single high-wall unit in the lounge uses the least electricity, but it also heats the least house. Compare like with like: one room against one room, or whole house against whole house. Our running cost guide shows how to estimate either.
Which looks better in a character home?
Ducted, by a distance. All you see are ceiling or floor grilles and a wall controller. A high-wall unit is a large white box high on the wall, which some owners of restored villas find hard to live with next to original cornices and ceiling roses. Floor consoles are a common compromise: they sit low, under a window or beside a fireplace, and blow warm air from floor level, which also suits high-stud rooms.
Can you fit ducted heating in an old villa?
Often, but not always, and access decides it. An installer needs somewhere to put the indoor unit and room to run ducts, either in the roof space or under the floor.
| House type | High-wall | Ducted |
|---|---|---|
| Villa with a pitched roof and walkable ceiling space | Straightforward | Usually possible through the ceiling |
| Bungalow with a low-pitched roof | Straightforward | Ceiling space may be too tight; underfloor may work |
| Villa or bungalow on piles with good crawl space | Straightforward | Underfloor ducting with floor grilles is often the best option |
| Concrete slab or no roof or floor access | Straightforward | Rarely practical; look at multi-split instead |
Wherever the ducts run, they need to be well insulated. Ducts in a cold roof space or a draughty subfloor lose more heat, which matters most in colder climate zones such as Christchurch and Dunedin.
Which should I choose?
- Heat one living area on a budget: a high-wall split, or a floor console if the stud is very high.
- Heat the living area plus two or three bedrooms without ducts: a multi-split. Note that Consumer NZ points out all indoor units must heat or cool at the same time.
- Heat most of the house with nothing on the walls, and you have roof or underfloor access: ducted with zoning.
- Uninsulated villa in a cold zone: insulate first. You may then need less capacity whichever system you pick.
- Holiday home or bach used occasionally: a high-wall split keeps it simple.
Still undecided between whole-home options? Read our multi-split heat pumps page next.
Frequently asked questions
Is ducted heating worth it in a villa?
It can be if you want to heat most of the house, care about how the heating looks, and the installer can reach a usable ceiling or underfloor space. If you only need the lounge warm, a high-wall or floor console is far cheaper.
How much does ducted heating cost for a standard NZ home?
Typically $8,000 to $15,000 installed for a standard home, and $15,000 to $25,000 for a large home with five or more zones, based on August 2026 price data.
Are ducted heat pumps less efficient?
Slightly. Consumer NZ notes some heat is lost from the ducts. Good duct insulation and zoning, so you only heat rooms in use, reduce the gap.
Can you install a ducted heat pump without a roof space?
Sometimes, if there is enough crawl space under the floor for the unit and ducts. Homes on a concrete slab with no roof access are rarely suited to ducted heating; a multi-split is usually the alternative.
What is a floor console heat pump?
An indoor unit that sits low on the wall near the floor instead of high up. It blows warm air from floor level, which can suit high-stud rooms, and its filters are easier to reach.
Can a multi-split heat some rooms and cool others?
No. Consumer NZ notes that one indoor unit cannot cool while another is heating on a multi-split system.