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Heating and cooling in PenrithBuilt for the hottest afternoon, and the frosty morning after.

An installer for Penrith

Licence-checked installers in Penrith who specialise in your kind of job see it, and the one who takes it calls you to quote.

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Penrith is where Sydney's heat peaks: it reached 48.9 degrees on 4 January 2020, and January afternoons at Penrith Lakes average 30.8. Winter nights still get cold enough for frost. So a system here has to cool hard in summer and heat properly in July, and the size on the quote matters more than almost anywhere else in the city.

Updated 29 October 2026 · Written by the Find My Aircon team · How we check our facts

What's different about Penrith

The heat is measured, street by street

Penrith City Council's heat research put temperature loggers at 120 sites across the city. On the day Penrith hit 48.9, they read up to 52 degrees at Berkshire Park and 51.5 at Agnes Banks. The long-run averages agree: Penrith gets 67 days a year above 30, against 15 in the CBD.

Cold nights, too

Penrith Lakes averages a July minimum of 5.4 degrees, and frost turns up on some winter mornings. If a reverse cycle system is also your heater, its heating output deserves as much attention as its cooling.

More units than you'd think

In the suburb itself, 43.4% of homes were flats or apartments at the 2021 Census and another 20.4% were townhouses, semis or terraces. Only 36.0% were separate houses.

Most homes are rented

60.2% of Penrith's homes were rented in 2021. If you're one of them, a new unit or a replacement is the owner's decision, so the request goes through them or the agent.

Well past the sea breeze

Penrith sits 55 km inland with the Nepean River on its western edge. The north-easterly sea breeze that cools the coast doesn't make it 9 km inland, so the west runs 6 to 10 degrees hotter on late spring and summer days.

Which jobs come up most in Penrith?

Ducted reverse cycle in the houses. ActronAir says an air conditioner loses cooling capacity above 35 degrees, and its example is a 14 kW system dropping to 10 or 12 kW. In Penrith that's the afternoon to size for. A ducted specialist should work out the heat load room by room rather than guess from floor area. More on ducted air conditioning in Sydney.

Splits in units and townhouses near the station. NSW strata rules treat a new reverse cycle unit as a minor renovation, so it needs majority support at a strata meeting unless a by-law hands the decision to the committee. Get that sorted before collecting quotes. The apartments and strata guide covers the paperwork.

Repairs in the first heatwave. A unit that struggled last January is the one to look at in spring, while installers still have room in their week. See air conditioning service in Sydney.

What we'd do

If we lived in Penrith

We'd size for the 40-plus afternoon, then check the heating capacity at 2 degrees on the energy label, because that's closer to a Penrith July morning than the 7 degree figure. We'd want the outdoor unit with plenty of air around it, and in a unit we'd get the strata answer first. Then we'd want an installer who does that exact job in the west every week. Tell us the job and your postcode: licence-checked installers near Penrith who do that work will see it, and only the one who takes it gets your details. Once 48 hours go by with nobody near Penrith taking it, installers from other parts of NSW may see it.

What this work looks like

Photos from real jobs in Melbourne, to show what the work looks like. They aren't from an installer near you.

An older evaporative cooler on a tiled roof
An older evaporative cooler on a tiled roof. Sep 2019. A job in Melbourne.
New insulated ducts run through a roof space
New insulated ducts run through a roof space. Sep 2023. A job in Melbourne.
A gas ducted heater against a brick wall, beside the underfloor access
A gas ducted heater against a brick wall, beside the underfloor access. Jun 2023. A job in Melbourne.

More job photos

Questions people ask

What size air conditioner do I need in Penrith?
It depends on the room or house, the insulation and which way it faces, so ask for a proper heat load. Size with Penrith's hottest afternoons in mind: ActronAir says capacity falls away above 35 degrees, and Western Sydney averages 10 to 20 of those days a year. Our size calculator is a sensible starting point.
Is evaporative cooling an option in Penrith?
It's more workable here than on the coast. Penrith's January afternoons average 47% humidity, and Seeley says evaporative cooling generally suits hot, dry climates. It only cools, though, so you'd still need heating for frosty mornings. Compare them in evaporative or refrigerated.
I rent in Penrith. Can I get air conditioning put in?
Ask your landlord or agent first, in writing. It's their property and their decision, and in a strata building the owners corporation may need to approve it too.

Ready for the right installer to take a look in Penrith?

Your postcode and three quick questions. Licence-checked local installers who specialise in your kind of job see it, and the one who takes it gets in touch to quote.

Free for you. Installers pay us for each job we pass on.

Where this information comes from

We don't publish prices. Every home is different, so an installer's written quote is the only real number. How we write and check these pages.

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