Homeowner guide · Updated October 2026

General Servicing vs Chemical Wash vs Chemical Overhaul

What each aircon service includes, how long it takes, what it costs, and which one your aircon needs.

Aircon dismantled into parts on a protective sheet for a chemical overhaul — Unit fully dismantled for a chemical overhaul

Side-by-side

	General servicing	Chemical wash	Chemical overhaul
What it cleans	Filters, panel, drain, light coil clean	Coil, blower, drain with chemical	Every part, unit dismantled
Time per unit	30–45 min	1–1.5 hours	2–3 hours
Price per unit	from $30	$80	$150
How often	Every 3 months	About yearly	When needed

Choose general servicing if

Your aircon cools well and was serviced in the last 3 to 6 months
You just want to keep it running efficiently

Choose a chemical wash if

Cooling is weak even after servicing
There's a smell or occasional dripping
It hasn't been chemically washed in over a year

Choose a chemical overhaul if

Strong mouldy smell or black spots on the blower
A chemical wash didn't fix the problem
The unit hasn't been deep-cleaned in several years

Related services

General Servicing

Regular servicing keeps your aircon cold, quiet and cheap to run.

from $30/unit

Chemical Wash

When general servicing no longer fixes weak cooling, leaks or a musty smell, the coil and blower are coated in grime that only chemical cleaning removes.

from $80/unit

Aircon Repair

We find the fault first and quote you before any repair.

check from $50

Gas Top-Up

Low refrigerant gas makes your aircon run longer and cool less.

from $60/unit

Whether you are fitting out a new BTO, replacing a tired system in an older flat or upgrading a condo, we survey the site, recommend the right size and brand, and install with neat trunking and proper drainage.

System 2 from $1,800