Updated monthlyKatherine split system price guide

Split system air conditioning
in Katherine

A split system costs $1,650–$4,050 fully installed in Katherine, bedroom units from $1,650, large living-area units up to $4,050, with unit size, brand tier and install complexity driving the spread.

Price your Katherine split install

Licensed installers who service your postcode quote your exact job, obligation-free.

Katherine split system installed prices

2.5kW, bedroom or study

$1,650–$2,100

3.5–5kW, living room

$2,200–$3,250

7kW, open-plan living

$3,200–$4,050

Three splits, whole home

$6,050–$9,150

Installed prices, unit + standard back-to-back installation. Shared scale.

Real quote data

What Katherine homeowners pay for splits

Job	Installed price	Suits
2.5kW split, bedroom, back-to-back install	$1,650–$2,100	Single bedroom or home office
3.5–5kW split, living room, standard install	$2,200–$3,250	Living areas, medium lounge
7kW split, open-plan living	$3,200–$4,050	Large open-plan house living zone
Three splits across the home, one visit	$6,050–$9,150	Whole-home comfort without ducted

Full local pricing across all system types on the Katherine cost guide; every brand priced by size on the national price list.

Cost drivers

What moves a Katherine split quote

Back-to-back, or not

The cheap baseline: indoor unit on an external wall, condenser directly behind it. Every metre the two units drift apart adds piping, cabling and labour, the biggest single swing on most quotes.

Electrical work

Bigger units need a dedicated circuit, and older switchboards sometimes need an upgrade to take one. Legitimate money, but it should be an itemised line, not a surprise on install day.

Top End heat inland

Katherine runs hotter than Darwin through the build-up, without the sea breeze. Size generously, the unit works an eight-month season.

Tropical spec throughout

Corrosion-resistant units and tropical-rated installs are the baseline this far north, ask what's specced for the Territory.

Katherine split system questions

How much does a split system cost installed in Katherine?

$1,650–$4,050 covers almost every standard Katherine install: small bedroom splits run $1,650–$2,550, large living-area units $2,750–$4,050. Brand tier and install complexity set where you land, back-to-back installs at the bottom, long pipe runs and upper storeys at the top.

When is the cheapest time to install aircon in Katherine?

The Dry, May to September. The build-up from October drives the rush and holds prices up through the wet.

Why do quotes vary for the same unit?

The install, not the box. A back-to-back install, indoor unit on an external wall with the condenser directly behind, is the cheap baseline. Long pipe runs, upper-storey condensers, harder walls and switchboard work each add real labour, which is why two honest quotes on different homes can sit hundreds of dollars apart for the identical unit.

What size split system do I need?

The working rule is 120–150 watts of cooling per square metre: roughly 2.5kW for a bedroom, 5kW for a 30m² lounge, 7kW+ for open-plan living, adjusted for your climate. Our size calculator does it properly in thirty seconds, free, no email.

How long does installation take in Katherine?

Most split installs are a half-day job, scheduled within 1–2 weeks of accepting a quote. From the build-up onward, expect 2–4 weeks of queue, book in the Dry.

Split system air conditioning in Katherine