The summer cooling checklist (before the heat arrives)

Summer comfort is mostly preparation with a calendar. Every item below works better done in late spring than in the first hot week — when every technician, and every air-conditioning unit, is already booked.

The strategy before the hardware

Cooling has an order of operations that saves money: keep heat out, then move air, then cool air. Keeping heat out is shading and timing — close east-facing blinds before you leave for work, open windows at night only while the outside air is genuinely cooler than in. Moving air is fans: a fan does not lower the temperature, it raises the rate your skin loses heat — which is why a fan plus an open night window often beats an aircon set two degrees lower. Only then does the aircon run, and it runs cheaper when the first two layers already did their work. If bills still shock you, the diagnosis lives in why the bill is high when nothing changed.

The aircon service, honestly small

Three things keep a split system or central AC honest through summer: a clean filter (check monthly in heavy use — the habit from the filter guide), a clear outdoor unit (the coil and clearance routine), and vents that are actually open — closing most of them to "push air elsewhere" is a myth that raises pressure and costs. Strange sounds before the season's first run are worth ten minutes of decoding; grinding and squealing are not "character".

Heat, cooking and the outside

Every oven hour is an aircon hour. Summer kitchens move outside where the setup is safe — the outdoor cooking rules exist because every one of them was broken somewhere first. Inside, pressure cookers, lids, and the grill on the balcony done properly make the kitchen's contribution to the heatwave a rounding error.

Safety items that matter more in summer

Window locks that let you sleep with airflow and security (renter-friendly options included); the bbq gas bottle stored upright and outside; and the dryer's lint habit — summer laundry loads climb, and lint is the fire risk that only ever needed sixty seconds.

Southern-hemisphere readers: six-month offset as always — this list is your December. The interactive version lives on the seasonal checklist.