Air conditioning guides
Everything you need to understand air conditioning, choose the right system, and know what to expect — explained in plain English. Whether you're cooling a single room at home or fitting out a whole building, start with the path that fits you.
Choose your path
Air conditioning for your home
HomeSystem types, sizing, costs and advice for homeowners.
Read guideAir conditioning for your business
BusinessCommercial systems, sector guidance, compliance and planning.
Read guideUnderstand the basics
These apply whether you're at home or in business.
How air conditioning works
The simple idea behind cooling and heating.
Read guideSingle-split vs multi-split
One room, or several from one outdoor unit.
Read guideInverter vs non-inverter
Why modern units are quieter and cheaper to run.
Read guideEnergy efficiency explained
SCOP, SEER and what the ratings mean.
Read guidekW and BTU explained
The units, and how they convert.
Read guideNoise levels explained
What dB(A) figures really mean.
Read guideLook something up
Not sure where to start?
If air conditioning is new to you, begin with how air conditioning works — it explains the one idea everything else builds on, that AC moves heat rather than "making cold". Then head to the home or business path for advice tailored to you.
Want a plan for your own space? Build your plan with the Aircon Planner →