A Hamilton winter has its own routine. The sky clears overnight, the air goes still, and by morning a thick fog has settled over the river and the low ground from Fairfield to Melville, often with a frost underneath it. The sun can take until late morning to burn through, so a house that never warmed up properly the night before stays cold and clammy for hours. Then summer arrives warm and humid, with the same damp air making bedrooms stuffy.
The city's housing mixes old and very new. Hamilton East, Claudelands and Frankton have villas, bungalows and post-war weatherboard homes, many of them sitting on river flats or near gullies where moisture hangs about. At the edges, Rototuna, Flagstaff and Peacocke keep adding streets of new builds, usually well insulated but often open-plan and two storeys. Getting the heat pump right means knowing which of those houses you're in, and these are the ten installers we'd trust to work it out.
Signs your Hamilton home needs a heat pump expert
Waikato winters reward a heat pump that is well sized and well kept. Any of the following is a good reason to get someone out before the fog season sets in.
- On foggy mornings the lounge is still cold at nine o'clock, even though the heat pump has been running since you got up.
- A house near the river or a gully stays damp, with wet windowsills, a musty smell in the wardrobes and mould spotting the curtains.
- The outdoor unit spends a long time iced over, stops more often than it used to, or knocks and rattles when it restarts. Have a look at our guide to heat pump faults first.
- You've moved into a two-storey new build with one unit downstairs, and the upstairs bedrooms swing between chilly in July and stuffy in January. A multi-room setup often fixes both.
- A sleepout, rumpus or home office still relies on a plug-in heater or an old gas heater to be usable in winter.
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1. Superheat Electrical and Air-Conditioning
St Andrews, Hamilton
St Andrews heat pump specialists who do every job with their own staff
Twenty years of electrical, heat pump, air conditioning and ventilation work sit behind Superheat, which runs from Pukete Road in St Andrews and covers the Waikato and Waipā. The team are Registered Master Electricians and members of IRHACE, the professional body for the refrigeration and air conditioning trade. No subcontractors are used, so the people who quote are the people who install.
Mitsubishi Electric, Daikin, Hitachi, Samsung and Panasonic units come in high wall, floor, cassette, ducted and multi-split forms, and WiFi control can be added. SmartVent and other ventilation systems are fitted to meet the healthy homes rules for rentals. Businesses can book scheduled maintenance every three to six months, warranty policies for heat pumps and electrical work are published, and quotes are free.
Why they made the list
Every review is five stars, and the themes are consistent: the heat pump installs, workmanship, cleanliness and tidiness, then heat pump cleaning and prompt communication. A handful mention ducted installs specifically. Five brands and both refrigeration and electrical credentials in-house make it a strong first call for anything from one room to the whole house.
38C Pukete Road, St Andrews, Hamilton 3200
Superheat Electrical and Air-Conditioning listing See Superheat Electrical and Air-Conditioning's website
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2. Enlighten Electrical
Newstead, Hamilton
Newstead electricians who let you price the job online before calling
Since 2014, Enlighten Electrical has worked out of Morrinsville Road in Newstead, on the city's eastern edge, serving the city plus Cambridge, Te Awamutu, Morrinsville and beyond. Lance Harris and his team of registered electrical practitioners take on repairs, renovations, new house wiring, switchboard upgrades, solar, data and audio visual work for homes and commercial clients, and the firm is an accredited EVNEX partner for home EV chargers.
Supply and installation of heat pumps runs from a single room up to a whole house, in high wall, floor console or ducted form, starting with a free measure and quote. SmartVent positive pressure ventilation comes with a free consultation and design, a handy pairing in a damp Waikato house. An online estimator lets you get a rough figure before anyone visits.
Why they made the list
People keep coming back to fair cost, tidy work, respectful staff and how easy the team is to contact, with heat pump installs and EV chargers both well represented. Its spot on the eastern side of the city is handy for the Morrinsville and Cambridge jobs it already takes on.
177d Morrinsville Road, Newstead, Hamilton 3286
Enlighten Electrical listing See Enlighten Electrical's website
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3. Goldstar Heat Pumps
Frankton, Hamilton
Frankton heat pump specialists backed by two five-year warranties
Heating and cooling are all Goldstar does. From Haig Street in Frankton it handles advice, installation and servicing for homes and businesses in Hamilton, around the Waikato and over in Tauranga, and an installer visits to suggest a setup that fits the space. The brand choice spans Daikin, Fujitsu, Carrier and Mitsubishi Electric, and there are also ducted bedroom systems and ventilation.
As an accredited Daikin and Mitsubishi Electric installer, it can offer a five year manufacturer warranty on those brands, and it adds its own five year workmanship warranty that includes a free check of the system. A section for landlords and a room size calculator, which asks how well insulated your home is, help narrow down the choice before you ring. Quotes are free and carry no obligation.
Why they made the list
None of the others here comes close on the amount of feedback about heat pump installs, and efficiency is the next most common theme. An easy process, quick and tidy installs and competitive pricing follow. The workmanship warranty with a free check built in is a practical extra in a region where units run hard all winter.
18b Haig Street, Frankton, Hamilton 3204
Goldstar Heat Pumps listing See Goldstar Heat Pumps's website
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4. Alectrics Electrical | Electrician Hamilton
Frankton, Hamilton
Registered electricians from Frankton who fit split and ducted systems, plus Lossnay ventilation
Founded by South Africans and proud of its Waikato home, Alectrics Electrical brings 40 years of experience to Hamilton and nearby Tamahere, Cambridge, Te Awamutu and Morrinsville. All of its electricians hold registration and practising licences with the Electrical Workers Registration Board. Its work spans repairs and rewiring through to commercial and industrial jobs, solar, EV chargers, CCTV and inspections, including electrical warrants of fitness for campervans and caravans.
For heating, it helps you choose between a split system and a ducted one, sizes it for the space and installs it neatly, then services it afterwards. Lossnay heat recovery ventilation is offered for homes that need fresh air without losing warmth. A free site visit comes before the quote, pricing is upfront, and the team takes on homes, rentals, new builds, shops, offices and industrial sites.
Why they made the list
Tidiness tops the feedback, followed by a high standard of work, heat pump installs, ventilation systems, efficient staff and clear communication. Pairing heat recovery ventilation with a heat pump is a sensible answer for a damp house on Hamilton's river flats, and the Newton Place base keeps Frankton jobs close.
3B Newton Place, Frankton, Hamilton 3204
Alectrics Electrical | Electrician Hamilton listing See Alectrics Electrical | Electrician Hamilton's website
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5. X Electrical - Electrician Hamilton
Hamilton Wide
A small Master Electrician business that gives straight advice on which unit to buy
X Electrical keeps things small and personal. The team are Registered Master Electricians, backing their work with the Master Electricians guarantee, and they cover upgrades, renovations, repairs, new builds, pool and spa wiring, home automation and LED lighting for homes and commercial clients. Solar is a big part of the business too, with more than five years of residential and commercial installs and ongoing maintenance checks.
On heat pumps, the starting point is advice. With no ties to a particular brand, it will help you find the best value unit for your rooms, or install one you've already picked, and Mitsubishi installs feature among its past jobs. Detailed quotes come back within 24 hours, with a clear explanation of what you're paying for.
Why they made the list
Cleanliness, a friendly team and polite staff are mentioned most, along with tidiness and attention to detail. Solar and battery work features heavily too, so if you're thinking about panels and a heat pump together, one firm can plan the electrical side of both. Fast, detailed quoting suits people comparing a few options.
47 Fuchsia Lane, Hamilton 3284
X Electrical - Electrician Hamilton listing See X Electrical - Electrician Hamilton's website
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6. Hamilton Home Heat Pumps
Hamilton Wide
Installs planned around Waikato fog, frost and humid summers
Hamilton Home Heat Pumps sizes its systems for the conditions on the Waikato valley floor: foggy, frosty winters and warm, humid summers. Its work runs from single-glazed villas in Hamilton East to new builds in Rototuna and Flagstaff, and out to Cambridge and Te Awamutu. A site visit checks the layout, the insulation and the best spot for the unit before a free, fixed-price quote is given.
High wall, floor console, ceiling cassette, multi-split and ducted heat pumps are all fitted, and the same systems cool and dehumidify in summer. A registered electrician does and certifies the electrical work, and someone holding an approved filler licence handles the refrigerant, with the paperwork supplied. Units carry the manufacturer's warranty, the team services and repairs what it installs, and it helps you check Warmer Kiwi Homes eligibility before you commit.
Why they made the list
With no reviews on record, the case rests on how it operates. Both the electrical and refrigerant work are handled by properly licensed people with paperwork to show for it, the full range of system types is available, and summer dehumidifying is part of the pitch rather than an afterthought. That suits a city this damp.
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7. XP Electrical
Frankton, Hamilton
A young Frankton firm led by its two directors, from homes to pump stations
Directors Dylan and John set up XP Electrical in 2019, and the locally owned business now works from Haig Street in Frankton. It describes itself as a one-stop electrical shop for residential, commercial and industrial clients across Frankton, Hamilton Central, Dinsdale, Rototuna, Cambridge, Te Awamutu and the wider Waikato. Industrial jobs include pump station and water treatment installations and automation.
Heat pumps are one of its specialities, with heating and ventilation sitting next to emergency repairs, fault finding, switchboard upgrades, lighting, EV chargers, solar, data and networking, alarms and security. It also carries out electrical inspections and caravan electrical warrants of fitness, and the team offers free quotes, so pricing a new unit for the lounge costs nothing.
Why they made the list
All 54 reviewers gave five stars, mostly praising workmanship and communication, then an efficient, punctual team and good advice. Heat pump installs come up by name. For a house in Dinsdale or Rototuna where the switchboard might need attention before a new unit goes in, one capable electrical firm covering both is handy.
3D Haig Street, Frankton, Hamilton 3204
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8. Switched On Electrical Ltd
Frankton, Hamilton
A Duke Street firm with 13 staff and a 24 hour line
Switched On Electrical began in 2004 with two people and has grown to 13, serving Hamilton and the Waikato with a 24 hour service. Its working motto is to do it once and do it right. The team belongs to the Master Electricians Association and offers the Master Electricians workmanship guarantee, which gives you somewhere to turn if anything about the job isn't right.
Installs, servicing and repairs of heat pumps sit alongside ventilation systems, extractor fans, rangehoods, spa and swimming pool wiring, lighting design and switchboard upgrades. New builds, commercial installations, maintenance and test and tag are covered too, and property managers lean on it for repairs to rentals. A free, no-obligation quote is available.
Why they made the list
It carries the most feedback of the ten, and the common threads are a quick response, being easy to deal with and polite staff, with heat pump installs often mentioned. Servicing and repairs on the same list as installs mean a unit that stops on a frosty night has a phone number to call at any hour.
94C Duke Street, Frankton, Hamilton 3204
Switched On Electrical Ltd listing See Switched On Electrical Ltd's website
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9. 2E Electrical
Hamilton Wide
St Andrews electricians with a dedicated heat pump and ventilation team since 2009
Damian and the 2E team have served Hamilton and the Waikato since 2009, taking on residential, commercial and rural electrical work from Perclo Place in St Andrews. Their licensed electricians handle new builds, renovations, solar, CCTV and ESCOUT energy monitoring, and they count Waikato builders, developers, businesses and homeowners among their customers.
Heat pumps and ventilation have their own dedicated service, which supplies and installs units from leading brands, including ducted systems, alongside balanced ventilation. Servicing and repairs are offered, and the team points out that a yearly service also helps landlords stay on the right side of the healthy homes standards. Full warranties and a satisfaction guarantee back the work, payment plans are available, and both quotes and assessments are free.
Why they made the list
People describe friendly electricians, quick and tidy work and a team that is easy to work with. Rural work is part of the mix, which helps if your place is a lifestyle block outside the city. Payment plans and free assessments make it straightforward to scope a ducted system before committing.
18F Perclo Place, St Andrews, Hamilton 3200, New Zealand
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10. Controlled Electrical | Heat Pumps
Hamilton Central, Hamilton
A Hamilton Central heat pump firm with a minimum five year warranty on every unit
Based on Vialou Street in Hamilton Central, Controlled Electrical and Heat Pumps serves Hamilton, Cambridge, Te Awamutu and the wider Waikato, working on homes and light commercial sites. Its range takes in high wall, floor mounted, ceiling cassette, concealed and ducted units from Mitsubishi, Fujitsu, Daikin, Haier and Carrier, with units supplied direct from the manufacturer.
Every heat pump it supplies carries at least five years of parts and labour warranty, and installs are certified by its registered electricians. Sizing takes in how well the walls and ceilings are insulated and whether the windows are single glazed. One point of contact runs the job from a free consultation and quote through to after-sales care, and the team also does lighting, solar and healthy homes work.
Why they made the list
Its reviews are fewer than most here, but all are five stars and they focus on heat pump installs, workmanship, punctuality and reliability, with fair pricing and accurate fault diagnosis mentioned. Five brands and every common system type give you real choice, and landlords have used it for heat pumps in their rentals.
27D Vialou Street, Hamilton Central, Hamilton 3282
Controlled Electrical | Heat Pumps listing See Controlled Electrical | Heat Pumps's website
Picking a Hamilton heat pump installer
Start with how the unit will cope on a frosty, foggy morning. Ask each installer what output the model keeps at low outdoor temperatures and how they sized it for your rooms, not just the floor area. Our guide to sizing a heat pump sets out the key questions.
Think about the shape of the house. A villa or bungalow with separate rooms often does best with one high wall unit for the living room, plus smaller units or floor consoles in the bedrooms. A new two-storey home in Rototuna or Peacocke with good insulation and roof space may suit a ducted system, and our ducted or high wall comparison weighs them up.
If damp is the real problem, ask about ventilation as well. Several of these firms fit positive pressure or heat recovery systems, and a heat pump on its own won't fix a house that never airs out.
Ask who services the unit afterwards and how often. Units in the Waikato run for months at a time, and our heat pump servicing guide covers what a proper service involves.
Lastly, read the quotes closely: brand and model, where both units sit, the pipe run, who holds the electrical and refrigerant licences, and what the workmanship guarantee covers. To see whether a subsidy could apply to your home, read heat pump grants in NZ.
Every heat pump installer in Hamilton is on the Hamilton page, where you can filter by the job you need.