Pre-Summer Air Conditioner Checklist for Tweed Coast Homes | JC Cool
Your Pre-Summer Air Conditioner Checklist
Every year it plays out the same way. The system sits untouched through winter, then the first genuinely hot day arrives, everyone switches on at once — and the ones that don't work properly all need a technician on the same afternoon.
August and September are the quiet months. If something's wrong with your system, now is when it's cheap to find out and easy to book. Here's what you can check yourself, and what's worth leaving to us.
Before you start
Switch the system off at the wall isolator, not just the remote, before you touch anything. Don't remove panels from the outdoor unit — capacitors inside can hold a charge long after the power is off. Everything below can be done safely without opening anything up.
What you can do yourself
Clean the indoor filters. If you only do one thing, do this. Open the front of the wall unit, slide the filters out, vacuum off the loose dust, then rinse them under a cool tap. Never use hot water — it warps the mesh. Let them dry completely before they go back in, because a damp filter is exactly how a system starts smelling musty.
Clogged filters choke airflow, which makes the system work harder, cool less and cost more to run. In a ducted system, find the return air grille and check the filter behind it as well.
Give it a test run. Set it to cooling, drop the temperature well below room temperature, and let it run for twenty minutes. You're looking for cold air within a few minutes, no rattles, grinding or new vibration, and no water dripping from the indoor unit. If it takes far longer to cool the room than it used to, make a note of that — it's meaningful.
Check the drain. Over winter, condensate drain lines fill with algae, sludge and the occasional insect nest. A blocked drain is the most common cause of water pouring down an internal wall in December. Find the outdoor end of the drain pipe and make sure water runs out freely while the system is cooling.
Clear the outdoor unit. Cut back anything that has grown around it over winter and pull out leaves, cobwebs and debris. The unit needs clear space to breathe — roughly a hand's width at the sides and a good metre in front of the fan discharge. While you're there, give the coil a gentle rinse with a garden hose. No pressure washers: the fins bend flat and never recover.
Look at the pipework. The insulated pipes running to the outdoor unit should be dry and covered. Oily residue, ice, or bare and crumbling insulation are all worth a phone call.
Check the basics. Fresh batteries in the remote, and confirm the isolator and circuit breaker are on. If the breaker trips when you run the system, stop there and call us — that's an electrical fault, not a settings problem.
What needs a technician
Some of it isn't optional. In Australia, only technicians holding an ARC refrigerant handling licence can legally work on the refrigerant circuit, so anything involving gas pressures is off-limits to homeowners.
A proper service covers:
Refrigerant pressures and a leak check — a system low on gas cools poorly and eventually destroys its own compressor
Deep chemical clean of the indoor and outdoor coils, including a sanitising treatment where mould is present
Electrical testing — capacitors, contactors, terminal connections and compressor current draw
Fan motors, bearings and blower wheel condition
Condensate drain flush and pump test
For ducted systems: duct integrity, insulation, zone motors and any rodent damage in the roof space
Most of the faults we find at this time of year are small — a weak capacitor, a slow leak, a partly blocked drain. Repaired in September they're minor. Left until January, the same faults arrive as a no-cooling call in a heatwave, with a wait time attached.
How often is enough?
Once a year is the baseline for a residential system. If you're near the water, running the system most of the year, or dealing with pets and dust, every six months is the better rhythm — and ducted systems generally warrant the closer attention because so much of the equipment is out of sight.
Call sooner rather than later if you notice
Air that isn't cold, or a system that runs constantly without reaching temperature
Ice forming on the pipework or the indoor coil
Water dripping or staining inside
A musty or burning smell when it starts up
Grinding, screeching or a new rattle
The circuit breaker tripping
Book while it's quiet
JC Cool Air Conditioning and Refrigeration services homes and businesses across the Tweed Coast. Winter is our quietest stretch — get in now and you'll have the pick of the diary instead of joining the queue on the first 35-degree day.
Contact us to book your pre-summer service.
