Guides

Buying guides, sizing references and straight answers for air conditioning and HVAC equipment in Australia. Written for people who actually own and maintain the gear.

Split System Capacity Sizing for Australian Rooms: A kW Guide

How to size a split system air conditioner correctly for an Australian room, with kW-per-square-metre benchmarks by climate zone and common sizing mistakes.

4 min read

Reverse-Cycle vs Cooling-Only: Which Should You Buy

Reverse-cycle versus cooling-only air conditioners compared for Australian climates, running costs and resale value, with guidance on which suits your home.

5 min read

How to Read a Split System's Energy Star Rating

How the Australian energy star rating label works for air conditioners, what the numbers mean, and how to compare running costs before you buy.

5 min read

R32 vs R410A: What Australian Techs and Buyers Need to Know

R32 and R410A compared for Australian buyers and techs: GWP, charge size, flammability class, servicing rules and what it means for a used unit.

5 min read

Multi-Head vs Single Split: Sizing a Whole House System

Multi-head air conditioner systems compared with individual single splits for whole-house Australian installs, covering simultaneous-use derating and cost.

5 min read

Inverter vs Fixed-Speed Compressors Explained

How inverter and fixed-speed air conditioner compressors differ in running cost, comfort and longevity, and which matters more for a used unit purchase.

5 min read

How to Check a Second-Hand Condenser Before You Buy It

A practical inspection checklist for a used air conditioner condenser: compressor sounds, coil condition, refrigerant checks and the questions to ask.

4 min read

Common PCB and Control Board Faults (and How to Swap One)

The most common air conditioner PCB and control board faults in Australia, how to read the fault codes, and what a licensed swap actually involves.

4 min read

Buying a Used Ducted Air Conditioner Without Getting Burned

A practical checklist for buying a second-hand ducted air conditioning system in Australia, from compressor age to duct condition and reinstall cost.

4 min read

Refrigerant Licensing and Safe Handling in Australia (ARC Explained)

How refrigerant handling licensing works in Australia under the ARC scheme, why it exists, and what it means for DIY air conditioner work and repairs.

5 min read