RT Heat Pumps & Electrical Ltd
- Installs heat pumps
- Ducted systems
- Servicing and cleaning
| Heat pump | Typical installed price |
|---|---|
| Small high-wall, about 2.5 kW (bedroom, small room) | $2,000 to $3,200 |
| Medium high-wall, about 5 kW (lounge) | $2,800 to $4,800 |
| Large high-wall, about 8 kW (open-plan living) | $3,500 to $5,500 |
| Ducted, whole house | $12,000 to $22,000 |
Installed prices, including GST, for a standard back-to-back install. Based on published price guides from eight NZ installers and retailers, updated Oct 2026. What changes the price
Enter the room size and how well it holds heat for a rough size. An installer confirms it when they measure up.
About 5 kW
A rule of thumb NZ installers use, for a room with a standard 2.4 m ceiling. High ceilings, big windows and open-plan spaces need more, so an installer should confirm it.
Sorted with heat pump specialists first, then electricians and other trades, each by Google rating and review count. Whanganui is in the Cold zone on the heat pump energy label, like the rest of New Zealand, so compare models on their Cold-zone stars. How to compare heat pump brands
Tell us the job and one trusted Whanganui installer will get back to you.
Get a quoteHow to work out the right size heat pump for a room in New Zealand, what the kW figures on the energy label mean, and why bigger isn't better.
Homeowner guideWhat changes the price of a heat pump in New Zealand, how to compare quotes, how to work out running costs from the energy label, and your rights.
Homeowner guideDucted or high-wall heat pump? How they compare on comfort, looks, ceiling space, zoning and the kind of NZ home each one suits.
Homeowner guideIn Whanganui, plumbers take a good share of the heat pump installers' work. Thompson Plumbing and Gas Ltd, Laser Plumbing Wanganui, Sharp Plumbing & Gas Services Ltd and Clark Plumbing & Gas all fit heat pumps, mostly for hot water, with outdoor heat pump hot water cylinders sitting beside solar and standard cylinders. Thirteen installers work from the city, and Whanganui District Council is the building consent authority. The rest are electricians and two heat pump specialists.
Southcombe Electrical is based in Westmere and is a family run business led by Josh Southcombe, with Holly running the office. It installs heat pumps beside lighting, switchboards, solar, EV chargers and rewiring, and has a 24 hour emergency service. It holds 5.0 from 121 reviews. HG Electrical is a locally owned electrician with heat pumps as one of its main services. It supplies, installs and services high wall, floor console and ducted units, sizes the system to each space, and installs all major makes. It is rated 5.0 from 45 reviews.
RT Heat Pumps & Electrical Ltd combines heat pump supply and installation with general electrical work for domestic and commercial customers. It advises on the right size of unit, installs high wall, cassette and ducted systems from most major brands, and services, repairs and re-gasses existing units. Its rating is 5.0 from 27 reviews. C M E Services is an electrical contractor with a heat pump sizing tool and a service booking option, with a Mitsubishi range that includes built-in Wi-Fi control. It holds 4.9 from 9 reviews.
Macell Maintenance & Electrical has more than 30 years of local experience and serves residential, commercial, industrial and agricultural customers, installing high wall and ducted heat pumps and giving free quotes. It is rated 5.0 from 7 reviews. Sound Electrical Ltd, formerly AME Electrical, has worked around Whanganui and Manawatu since 2000 and is an authorised installer of Fujitsu and Mitsubishi Electric heat pumps, at 4.3 from 6 reviews. Chelley Alexander Electrical serves Whanganui and surrounding areas within about 100 km, including Palmerston North, and offers high wall and floor console units. It has 5.0 from 3 reviews.
The plumbers deserve a separate look because their reviews dwarf the electricians'. Laser Plumbing Wanganui is rated 4.8 from 98 reviews and Thompson Plumbing and Gas Ltd 4.9 from 92. Thompson is a family-run business, trading since April 2019, now a team of 14 with certified plumbers, drainlayers and gasfitters. Sharp Plumbing & Gas Services Ltd, serving the community since 2014, is at 4.6 from 61. Clark Plumbing & Gas trades as Laser Plumbing Wanganui and is rated 4.5 from 2 reviews. Plumber Dan Limited, a plumbing, drainage, gas and building business with an office on Victoria Avenue, is rated 4.9 from 784 reviews.
Most of the businesses work within the city and its rural surrounds, and few name outside towns. Palmerston North is the one that comes up, and Feilding, Palmerston North, Hāwera, Levin and Pahiatua each have their own city page for people nearer those towns. A Whanganui homeowner who wants a heat pump for the living room will mostly look to the electricians and RT Heat Pumps & Electrical Ltd, and one who wants a new hot water cylinder will look to the plumbers.
Thompson Plumbing and Gas Ltd, Laser Plumbing Wanganui, Sharp Plumbing & Gas Services Ltd and Clark Plumbing & Gas all install heat pump hot water. Sharp Plumbing & Gas Services sells and installs outdoor heat pump hot water cylinders as well as solar.
HG Electrical, RT Heat Pumps & Electrical Ltd and Macell Maintenance & Electrical install ducted systems. HG Electrical and RT Heat Pumps & Electrical Ltd also fit high wall units, and HG Electrical fits floor consoles.
RT Heat Pumps & Electrical Ltd services and assesses existing units, repairs them and re-gasses them. HG Electrical services and repairs heat pumps, and Sound Electrical Ltd services the Fujitsu and Mitsubishi Electric units it fits.
Southcombe Electrical, HG Electrical, RT Heat Pumps & Electrical Ltd, Macell Maintenance & Electrical, Sound Electrical Ltd and Chelley Alexander Electrical all give free quotes. Ask each how it sizes the system for the room.
Chelley Alexander Electrical serves Whanganui and surrounding areas within about 100 km, including Palmerston North. Sound Electrical Ltd has worked around Whanganui and Manawatu since 2000. Palmerston North also has its own city page.
C M E Services installs a Mitsubishi range that includes models with built-in Wi-Fi control. Chelley Alexander Electrical also fits units with Wi-Fi control, alongside its high wall and floor console range.
Typical installed prices in New Zealand run $2,000 to $3,200 for small high-wall, about 2.5 kW, $2,800 to $4,800 for medium high-wall, about 5 kW, $3,500 to $5,500 for large high-wall, about 8 kW, $12,000 to $22,000 for ducted, whole house. A Whanganui quote moves with the size, the brand, how far the pipes run and where the outdoor unit goes. Based on published price guides from eight NZ installers and retailers, updated Oct 2026.
As a rough guide, allow about 120 watts per square metre in a well-insulated room, 140 in an average one and 160 in an older, draughty one. A 30 m² lounge works out at about 4.2 kW with average insulation and 4.8 kW if it loses heat. Heat pumps come in set sizes, so both round up to a 5 kW unit. Use the calculator above for your room, then have an installer confirm it.
The town partner gets every quote request from that town, a featured card at the top and their name on the form.
Pricing for heat pump installers