Best air conditioning installers in the Perth Hills (2026)
Table of Contents
These are the best-rated air conditioning specialists working the Perth Hills, from Kalamunda, Lesmurdie and Gooseberry Hill along the scarp, down through Forrestfield, High Wycombe and Maida Vale on the foothills, and out to Mundaring, Glen Forrest, Darlington, Roleystone and the bush blocks beyond. They are ranked on real Google reviews, not on who paid us. The hills are a smaller, spread-out market than the flat metro suburbs, so this is a tighter list of genuine air-con installers rather than a forced top 10. Below it you will find what a split-system or a ducted reverse-cycle job actually costs up here in 2026, the red flags that tell you to hang up the phone, and a quick checklist to run before you let anyone drill through your wall.
Featured air con installers
These spots are for Perth Hills air con installers who want to stand out on this page. None are taken yet, so the full review-ranked list is right below. That ranking is earned off Google reviews and never for sale. Are you a local installer around Kalamunda, Mundaring, Roleystone or Forrestfield? Featured spots start at $50 a year.
Get a Featured spot ▸How we ranked these
- Google reviews do the ranking. We start with every installer’s live Google star rating and the number of reviews behind it, pulled fresh from Google Maps across Kalamunda, Mundaring, Roleystone, Forrestfield and the hills suburbs in between.
- Rating, weighted by volume. A 5.0 from a handful of jobs is not proof yet, so we weight the score by review count. A proven rating from dozens of customers is not beaten by a perfect score from a few. Up here the review bases are smaller than the flat metro, so the leaders sit close together and any of them is a fair first call.
- A smaller, spread-out hills market. The Perth Hills do not have a deep bench of dedicated air-con firms the way Joondalup or Canning Vale do. Plenty of hills homes are looked after by electrical-and-air outfits and by Perth-wide installers who drive up the hill. So we have listed the genuine air-conditioning specialists here and named the electrical-first firms below, rather than padding the list to reach ten.
- Licence matters. Split-system work handles refrigerant, so a legitimate installer holds an ARCtick (Australian Refrigeration Council) licence and uses a licensed electrician for the electrical connection. We tell you how to check both yourself in the checklist.
- Other trades and retailers left out. These searches also pull up air con stores, wholesalers, auto air-conditioning and radiator shops, plumbers and electricians. They are real businesses, but they are not the house-call air-con installer you book, so we have kept them off this list along with any listing carrying only a review or two.
- Paid spots are labelled, and never jump the queue. When a business pays for a “Featured” spot it is marked as such. The review-based order below does not change to favour a payer. Right now, no spots are sold.
Phair Services
A clean 5.0 held across 40 reviews is the biggest body of proof on this page, and that depth is exactly why the volume weighting puts them first. Working the Mundaring and Kalamunda end of the hills, they cover the lot, from a single bedroom split to a whole-home ducted reverse-cycle fit-out, plus servicing and no-cool repairs. When a perfect rating holds up over that many jobs it usually means consistent sizing and tidy work, so this is a safe first call for the Perth Hills.
View listing & contact ▸Bowden Air
A clean 5.0 across 27 reviews is a genuine standout up here. A perfect sheet over that many installs points to careful sizing and neat finishing, which is what you want before someone runs pipe through a hills roof space. They sit a whisker behind the leader on review weight alone, not on quality. A strong choice for supply-and-install work around Mundaring, Glen Forrest and Darlington.
View listing & contact ▸Discover Comfort Air Conditioning
A 4.9 across 33 reviews is one of the deepest bases on the page, and that strong rating over a solid base is why the weighting keeps them right in the mix at the top. Only the finest margin separates the top three, so treat these as a near tie, the order between them comes down to review weight and rating, not a gap in quality. A reliable call for install and service work across Forrestfield, High Wycombe and the foothills.
View listing & contact ▸5.0 (12)
5.0 (8)
5.0 (7)
5.0 (4)
4.3 (6)
A note on the ranking: the top three are a genuine near tie. Phair Services leads on the deepest base on the page, a 5.0 across 40 reviews, which the volume weighting keeps just ahead of Bowden Air (5.0 across 27) and Discover Comfort (4.9 across 33). Below them the bases get thin, which is the nature of a spread-out hills market, so treat positions four to eight as a close pack of smaller, well-reviewed local operators. Empire Air sits at the bottom because its 4.3 average is right at the rating floor we will feature. We list only real, review-bearing installers and never pad the list to hit ten. Some of the most-reviewed names in these searches are electrical-first firms that also install air con: ARO Electrical and Air (5.0 across 154) and Pinnacle Electrical & Air-Conditioning (5.0 across 14) both feature on our Perth Hills electricians list, and Coral Electrical & Air Conditioning and IMR West Air Conditioning & Electrical work more as sparkies who fit units, so we have named them here rather than rank them against air-con specialists. If you want the electrical and the air-con handled together, they are worth a look. Ford & Doonan’s head office is a retail air con store rather than a house-call installer. Mouritz (4.1) and Ambience Air Conditioning Midland (4.1) sit below the rating we would feature, and Kalamunda Plumbing, the auto and radiator shops, and the solar and generator listings are different trades. Sanitair Perth East holds a strong 5.0, but it is a dedicated cleaning and servicing specialist rather than a supply-and-install contractor, so we have noted it here rather than ranked it, if a mould clean or a service is all you need, it is worth a call. We have also held back Perth-wide names such as Style Air that already feature on our other lists, to keep this page anchored to installers working the hills.
What air conditioning actually costs in the Perth Hills (2026)
Nobody likes ringing an installer blind on price. These are honest ballpark ranges for the common jobs around Kalamunda, Mundaring, Roleystone and the foothills, GST and standard install included. They are a guide to keep you from being overcharged, not a quote. Air con pricing swings a fair bit on brand, capacity and how hard your place is to run pipe through, and hills homes on bush blocks with steep driveways and split-level roofs often sit at the top of these ranges, so always get the job priced in writing before work starts.
| Job | Typical range | What pushes it up |
|---|---|---|
| Service, clean & check (split) | $120-$240 | Multiple units, mould clean, older systems, hills travel |
| Re-gas / refrigerant top-up | $180-$450 | Finding and fixing the leak first, larger systems |
| Fault find / no-cool call-out | $100-$200 | After-hours, older systems, travel out to the hills, parts on top |
| Supply & install split (2.5-3.5kW, bedroom) | $1,300-$2,300 | Premium brand, double-brick or timber wall, upstairs, long pipe run |
| Supply & install split (5-7kW, living area) | $2,300-$4,000 | Second-storey, split-level roof access, switchboard upgrade |
| Multi-head split (2-3 indoor heads) | $4,500-$8,500 | Number of heads, long hills pipe runs, brand |
| Ducted reverse-cycle, whole home | $9,500-$19,000+ | Home size, zones, single vs three-phase, roof space and pitch |
| Add a zone / extra ducted outlet | $300-$700 | Ceiling access, damper and controller |
| Evaporative cooler supply & install | $3,500-$6,500 | Roof type, ducting runs, controller |
| Bushfire-zone outdoor unit works | $150-$600 | Ember screening, clearance from vegetation, hardstand for the condenser |
| Relocate an existing split head | $350-$750 | New pipe run, re-gas, patching the old spot |
The hills are their own job. Summers up here run hot and dry like the rest of Perth, but the nights and the winters are noticeably cooler than the flats, and the higher suburbs around Mundaring, Mount Helena and Chidlow catch frost, so reverse-cycle that both cools and heats earns its keep where older evaporative-only setups leave you cold in July. Plenty of hills homes are still on tired evaporative units and moving across to reverse-cycle. Bush blocks bring their own considerations: many properties sit in designated bushfire (BAL) zones, so the outdoor condenser wants clear space from vegetation, ember screening and a proper hardstand, not a unit tucked into the leaf litter against a timber wall. Timber and weatherboard homes at Darlington and Glen Forrest, and split-level builds on the scarp at Kalamunda, Lesmurdie and Gooseberry Hill, make placement and pipe runs trickier and can lift the price. And because the hills sit a fair drive from the metro depots, a local hills installer often saves you the travel loading a city firm adds. A licensed installer should give you a fixed price or a not-to-exceed figure, in writing, before starting. If they cannot, that is a red flag (see below).
Don’t get ripped off: red flags
- No ARC licence for the refrigerant. Anyone installing or decommissioning a split-system handles refrigerant, and that legally requires an ARCtick (Australian Refrigeration Council) licence. The electrical connection also needs a licensed electrician. If they cannot give you an ARC number, walk away, no exceptions.
- Sticking the outdoor unit anywhere in a bushfire zone. Up here that matters. A good installer keeps the condenser clear of vegetation and leaf litter, screens it against embers where the BAL rating calls for it, and sets it on a proper hardstand. An installer who does not even ask about your bushfire rating has not thought it through.
- Quoting a system without sizing it. A good installer measures the room or home, ceiling height, window aspect and insulation, and sizes the kilowatts to suit. “She’ll be right, we’ll put a 7kW in” without measuring gets you an over- or under-sized unit that either short-cycles or runs your power bill up all summer, and leaves you cold on a frosty hills morning.
- A cheap “supply & install” that skips the electrical or the brackets. Suspiciously low quotes often leave out the isolator switch, proper wall brackets, pipe covers or the electrical connection, then expect your own sparky to finish it. Get the inclusions in writing.
- Cash only, no receipt, no warranty paperwork. Manufacturer warranties (often five years) only stand if the unit is installed by a licensed installer with the paperwork to prove it. No paper, no warranty, and no comeback if it fails.
Before you hire: quick checklist
- ARC licence. Confirm the installer holds a current ARCtick licence for refrigerant work, and that a licensed electrician does the electrical connection. Check the ARCtick number at arctick.org.
- Bushfire-aware placement. On a bush block, ask where the outdoor unit will sit and how it will be kept clear of vegetation and embers. A hills installer should raise this before you do.
- Insurance. Ask for current public liability cover, it protects your home if something goes wrong.
- Written quote. Itemised and in writing, including brand, model, kW capacity and whether the electrical and isolator are included, before work starts.
- Capacity sizing. They measured the space and sized the unit to it, rather than eyeballing a number over the phone.
- Warranty. Confirm the manufacturer warranty is registered in your name and you get the installer’s workmanship warranty in writing.
- Recent reviews. Look for recent, specific reviews, not just a big number. A steady stream of detailed 5-star installs beats one old burst of them.
Frequently asked
How did you rank these installers?
By their live Google star rating and the number of reviews behind it, pulled from Google Maps across Kalamunda, Mundaring, Roleystone, Forrestfield and the hills suburbs in between. We weight the rating by review volume so a proven score from dozens of customers is not leapfrogged by a perfect score from a handful. The hills are a smaller, spread-out market than the flat metro, so the leaders sit close together, treat the top three as a near tie. All of them are working air con specialists, not retailers, wholesalers or other trades.
Why only eight, not ten?
Because we will not invent businesses to fill a list. The Perth Hills genuinely have fewer dedicated air-con firms than the flat metro suburbs, and a lot of hills homes are serviced by electrical-and-air outfits (named in our note above and on our Perth Hills electricians page) and by Perth-wide installers who drive up the hill. Rather than pad the ranking with thin or out-of-area listings, we have kept it to the eight genuine air-con specialists with a real review base up here.
Are these paid placements?
No. This list is ordered on Google review data. Businesses can pay for a “Featured” spot at the top, which is clearly labelled, but paying never changes the review-based order below. As of this update, no spots are sold.
Reverse-cycle or evaporative up in the hills?
Reverse-cycle is the stronger fit for most hills homes, and here is why. The nights and winters up here are colder than on the flats, with frost in the higher suburbs, so a system that heats as well as cools earns its keep, whereas evaporative cooling cannot heat at all and struggles on humid days. Evaporative is cheaper to run and moves a lot of fresh air, and it still suits some homes, but plenty of hills homeowners are swapping tired evaporative units for reverse-cycle so they are covered in both a 40-degree summer and a frosty July.
What size air conditioner do I need?
As a rough guide, a bedroom might need 2.5 to 3.5kW, a medium living area 5 to 6kW, and an open-plan living and kitchen 7 to 9kW or more, but ceiling height, window size and aspect, and insulation all move that number. High raked ceilings, common in hills homes, push the load up, so do not guess it: a good installer measures the space and sizes the unit, because an over-sized system short-cycles and an under-sized one never quite gets there.
Do I need a licensed installer?
Yes. Installing a split-system handles refrigerant, which legally requires an ARCtick licence, and the electrical connection must be done by a licensed electrician. DIY installs void the manufacturer warranty, can void your home insurance, and often leak refrigerant or trip out. Booking a licensed installer is the only way the warranty and the paperwork actually stand.
How often is this page updated?
Monthly. Ratings and review counts move, new installers earn their spot, and we re-pull the data so the list stays honest and current.
Are you an air con installer in the Perth Hills?
Get in front of homeowners who are ready to book. Claim your free listing, or ask about a Featured spot on this page.
Get featured ▸ Claim your free listingRankings based on Google review data collected 24 July 2026. Ratings change, we re-check monthly. Blue Collar Business · Western Australia’s Trades & Home Services Directory.