Lower Hutt sits on the valley floor, and the valley floor holds on to moisture. Hutt City Council describes the Te Awa Kairangi Hutt River valley as the most densely populated floodplain in New Zealand, and NIWA's long-term average rainfall at Gracefield is about 1,200 mm a year, against under 1,000 mm at Wellington Airport across the harbour. Damp ground under a timber house means damp air inside, which takes more energy to heat.
Much of the housing was built for families in a hurry. Rows of state houses in Naenae, Taitā and Epuni sit alongside post-war family homes in Stokes Valley and Wainuiomata, many of them with suspended timber floors and modest insulation. Down by the harbour, Petone's workers' cottages and the seaside homes of Eastbourne and the bays bring salt air into the mix. For any of them, these eight firms are where we'd start.
Is your Hutt home overdue for a proper heat pump?
Valley-floor houses give themselves away in a few familiar ways. Any of these is a good reason to get a quote before the cold, wet months arrive.
- Clothes in the wardrobe feel damp, curtains go mouldy along the bottom, and the house smells stale after a few days of rain.
- You heat the lounge every night, but the bedrooms at the far end of a long state-house hallway stay cold until spring.
- The old unit in your Petone cottage or Eastbourne bach is noisy, rusty or struggling, and you've lost track of when it was last serviced. Our heat pump troubleshooting guide helps you narrow down the fault.
- You're a landlord and not sure the lounge heater meets the Healthy Homes heating standard.
- The gas bill keeps climbing and you'd like to heat the whole house, and perhaps the hot water, without it.
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1. Illuminex Electrical
Hutt Central, Lower Hutt
Master Electricians in Hutt Central with a $20,000 workmanship guarantee
Illuminex Electrical has worked from Rutherford Street in Hutt Central since 2021, covering Lower Hutt and the wider region. Its team are registered Master Electricians who take on residential and commercial jobs, from a single power point to a full home renovation. Eastbourne, Petone, Stokes Valley and Wainuiomata are all on its patch, along with Upper Hutt and the Wellington suburbs.
Heat pump installation and upgrades sit beside switchboard upgrades, house rewiring, new builds, EV chargers, home automation and ventilation. That mix suits older Hutt houses, where a heat pump sometimes needs a new circuit first. All work is covered by the Master Electricians Guarantee, worth up to $20,000 on workmanship, and quotes are free.
Why they made the list
Workmanship is the word customers use most, by a long way, followed by polite staff, tidy work and prompt, competitive quotes. Switchboard upgrades and heat pump installs both come up often. The Master Electricians guarantee gives you a clear fallback, and one firm handling the wiring and the heat pump keeps things simple.
5/5 Rutherford Street, Hutt Central, Lower Hutt 5010
Illuminex Electrical listing See Illuminex Electrical's website
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2. Adam Tulloch Electrical Limited
Korokoro, Lower Hutt
A Korokoro firm running since 1992, with Fujitsu accredited installers
Adam Tulloch and Gary Cooke built this business from 1992 into what it calls a one-stop sparky shop, now working from Pito-One Road in Korokoro. Its large team includes electricians, appliance technicians, registered security installers and heat pump installers, covering Wellington, Kāpiti, Horowhenua, Manawatū and Tararua. The Lower Hutt office takes 24-hour emergency call-outs.
On heat pumps, the installers are Fujitsu accredited and fit single room, multi-room and whole home solutions. Every install carries the Fujitsu General 6 Year Comfort+ Warranty. Being fully brand trained, the team also diagnoses, repairs and services all makes and models, so you don't need a Fujitsu to call them. Home ventilation, appliance repairs, CCTV and alarms are part of the same business.
Why they made the list
More than three decades in the region and a team that can fix almost anything electrical count for a lot. Customers keep returning to workmanship, tidiness, quick response and attention to detail, and heat pump installs and rewiring are common jobs. Repairs on any brand make it useful when your existing unit plays up.
12/33 Pito-One Road, Korokoro, Lower Hutt 5012
Adam Tulloch Electrical Limited listing See Adam Tulloch Electrical Limited's website
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3. Get Pumped Heatpumps
Wainuiomata, Lower Hutt
One Wainuiomata technician who handles your job from quote to switch-on
Dean Nolan started Get Pumped Heatpumps in 2016, bringing more than 20 years of heat pump design, installation and maintenance with him. He works from Hyde Street in Wainuiomata and covers the Hutt and the rest of greater Wellington, and he handles each job himself from start to finish. Each installation is sized on a site visit, and a registered electrician does the connection and the Certificate of Compliance.
He supplies and installs Mitsubishi Electric and Gree heat pumps, with high walls, floor consoles, cassettes, ducted options and multi-room systems to choose from, plus fresh air ventilation. Servicing, repairs and replacements are all offered, along with heat pumps for landlords who need to meet the Healthy Homes rules. An online size selector gives you a starting point before the free quote.
Why they made the list
Dealing with the same person from the first visit to the finished install is a big part of the appeal, and every review so far is five stars. People mention quick setup, competitive pricing, workmanship, tidiness and an easy process, and a couple praise the advice on where to put the unit. Wainuiomata households have a specialist on their doorstep.
37A Hyde Street, Wainuiomata, Lower Hutt 5014
Get Pumped Heatpumps listing See Get Pumped Heatpumps's website
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4. Hanlon's Tisco Services In Wellington
Moera, Lower Hutt
A long-standing repair workshop with a separate heat pump team
Hanlon Tisco has more than 25 years behind it in the Petone area and is best known for repairing televisions, audio gear and whiteware, from its base on Randwick Road in Moera. It repairs on the bench and on site, from Petone to Masterton and from Wellington City to Ōtaki, and a mobile van can collect larger items.
Heat pumps are their own service line. The team supplies and installs high wall, floor console, multi-room and ducted systems with Wi-Fi control, and its servicing includes deep coil sanitising with antimicrobial treatment. EWRB registered electricians handle the electrical side, and finished installations and component repairs come with a written warranty. Heat pump installs get a free quote, while repairs are priced after an assessment.
Why they made the list
Friendly staff get an extraordinary number of mentions, and warranty repairs and punctuality come up often too. The coil sanitising service is worth knowing about if an older unit smells musty when it starts. Having one business that can fix the TV, the washing machine and the heat pump is handy for a busy household.
115 Randwick Road, Moera, Lower Hutt 5010
Hanlon's Tisco Services In Wellington listing See Hanlon's Tisco Services In Wellington's website
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5. Chillzone LTD
Petone, Lower Hutt
Talk straight to Mike in Petone, from first chat to finished install
At Chillzone you deal directly with Mike Fryer. The Petone company, on Bouverie Street, installs and services heat pumps, air conditioning and refrigeration across the Wellington region, and it has 15 years in the industry. It is trade qualified and registered, and a large share of its work comes through referrals from past customers.
Mike advises on systems and brands, working with Mitsubishi Electric, Daikin, General and Panasonic, and the process is simple: talk about the property, review a free quote, then agree a time to install. Houses, apartments and offices are all covered, and it services existing systems if you send the make and model. Commercial refrigeration for dairies, supermarkets, hotels and restaurants is the other half of the work.
Why they made the list
If you like knowing exactly who you'll be dealing with, the direct line to the owner is the draw. Heat pump installation dominates the feedback, followed by punctuality, quality of work, a hassle-free process, responsiveness and professional advice. Working across four brands keeps the advice even-handed, and the referral-heavy workload says a lot about repeat trust.
Unit 53/47 Bouverie Street, Petone, Lower Hutt 5012
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6. Abode Air Conditioning Ltd
Alicetown, Lower Hutt
Engineering-led design in Alicetown, from a Daikin dealer of more than 25 years
Mechanical engineer Alan Strawbridge founded Abode Air Conditioning and still leads its design work and calculations, drawing on 40 years of experience. From Cuba Street in Alicetown, the company serves Greater Wellington from Levin to Masterton. It has been an authorised Daikin dealer for more than 25 years and a Mitsubishi partner for over a decade, and its own team, including three in-house electricians, does every install.
Rooms are sized on site using their volume, sun and cold spots. Homes can choose high-wall, floor console, multi split or ducted systems, hot water heat pumps, and ventilation, with positive pressure for older, leakier houses and balanced heat recovery for airtight new builds. The workmanship warranty matches the manufacturer's period, each installation includes a Code of Compliance certificate, and ventilation consultations are free.
Why they made the list
An engineer doing the sums is valuable in a valley full of draughty older homes, and the ventilation advice is matched to the type of house. Customers mention heat pump installs and friendly staff most, then thoroughness, annual servicing and timeliness. Commercial work for medical centres, hotels and schools shows it can handle complex jobs.
424 Cuba Street, Alicetown, Lower Hutt 5010
Abode Air Conditioning Ltd listing See Abode Air Conditioning Ltd's website
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7. Fantail Services Limited
Hutt Central, Lower Hutt
Hutt Central heating, cooling and ventilation people since 2010
Fantail Services began in 2010 and works from Pretoria Street in Hutt Central, serving the greater Wellington region. Its aim from day one has been to become the region's most respected name for heating, cooling, ventilation and electrical work. Commercial clients get HVAC design, server room climate control, cool rooms, hydronic heating and a 24/7 call-out service.
For homes, it installs heat pumps and air conditioning, heat recovery ventilation that keeps the whole house comfortable, and residential electrical work, and it offers servicing and maintenance afterwards. It fits solar and EV chargers too, and does seismic restraint work for commercial buildings. You can get an estimate online to start the conversation.
Why they made the list
A firm that designs systems for server rooms and cool rooms brings that precision to a family home. Feedback mentions responsiveness, efficiency, a choice of options, sound advice and thorough work, and Mitsubishi gets a couple of mentions. Heat recovery ventilation alongside a heat pump is a sensible pairing for damp valley houses.
5 Pretoria Street, Hutt Central, Lower Hutt 5010
Fantail Services Limited listing See Fantail Services Limited's website
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8. Degree Limited
Petone, Lower Hutt
Petone's Fujitsu ducted system designers, operating since 2004
Degree was founded in 2004, and its directors bring half a century of experience between them. The company is based on Udy Street in Petone and serves Wellington, Lower Hutt, Upper Hutt and Kāpiti. An in-house registered master electrician certifies the electrical work, and its accredited installers can extend Fujitsu warranties from five to six years.
Fujitsu is the focus, with high wall, floor standing, compact cassette, multi-room and ducted systems, plus the Sleep Pump, a ducted unit that heats and cools up to three bedrooms. Designing ducted systems is a speciality. Wi-Fi control and Ata Touch home automation are available, commercial heat pumps and refrigeration are serviced and repaired, and solar is offered. Consultations are free.
Why they made the list
If you've settled on a ducted system, a team that specialises in designing them is a sensible first call. Customers mention friendly staff and good communication, and some reviews describe service visits on existing units. The extra year of Fujitsu warranty and an in-house electrician add peace of mind for a whole-house job.
2B Udy Street, Petone, Lower Hutt 5012
What to ask a Lower Hutt installer before you sign
Ask where the outdoor unit will go and why. On low, flat sections in Moera, Waiwhetū or Naenae, a wall bracket that lifts the unit clear of the ground keeps it away from puddles and the odd garden flood.
Ask how the size was worked out. A heat pump in a cold, damp state house has to do more than one in a sunny, insulated renovation, so the quote should mention insulation, floor type and room aspect. Read up on heat pump sizing so you can spot a guess.
Think about the layout. A long hallway with bedrooms down one side suits a multi-room system or a ducted system better than a single large unit, and the pros and cons are laid out in ducted vs high wall.
Ask whether ventilation or underfloor insulation should come first. In a damp house, stopping moisture at the source helps the heat pump work less hard.
Finally, check the paperwork. You should get a Certificate of Compliance for the electrical work, and the rules on who is allowed to install a heat pump show which tradespeople need which licence.
Every heat pump installer in Lower Hutt is on the Lower Hutt page, where you can filter by the job you need.