Summer maintenance is mostly about protecting your cooling before the first heat wave tests it. The job that matters most is keeping the AC breathing: a debris-choked outdoor condenser or a clogged filter makes the system work harder, run longer, and is a common reason it quits on the hottest day of the year. The rest is catching storm damage early.
Quick summer maintenance checklist
- Clear leaves and debris from the AC outdoor unit.
- Change the HVAC filter and keep a spare on hand.
- Leak-test the grill's propane connections.
- Clear gutters and downspouts before summer storms.
- Seal gaps around windows and doors to keep cool air in.
- Wash and inspect the deck.
- Eyeball the roof from the ground for loose shingles.
- Empty and clean the dehumidifier.
Clear the AC outdoor unit
The condenser sheds heat through its fins, and grass clippings, leaves, and cottonwood fluff choke that airflow so the system runs longer and hotter. Cut back plants to give it about two feet of clearance on all sides, and with the power off at the disconnect, rinse the fins gently from the inside out with a hose. If the AC still won't cool well after a fresh filter and a clean condenser, call a technician. Refrigerant, electrical, and compressor issues aren't DIY territory.
Change the HVAC filter
A dirty filter is the most common cause of weak cooling and a frozen coil. Check it monthly in heavy cooling season and replace it when it looks gray, usually every one to three months. Note the size printed on the frame so you can keep a spare.
Leak-test the grill's propane connections
Brush soapy water on the hose and fittings with the tank open and the burners off; growing bubbles mean a leak. Tighten the connection and retest. If it still leaks or you smell gas, close the tank valve and replace the hose or regulator before using the grill. Don't repair a gas line yourself, and follow NFPA's grilling guidance.
Clear the gutters before summer storms
Packed gutters send heavy rain over the edge and down against the foundation. Clear them and confirm the downspouts carry water several feet from the house so a summer downpour drains instead of pooling.
Seal gaps to keep cool air in
Caulk and weatherstripping around windows and doors stop conditioned air from leaking out and hot air from sneaking in, which makes the AC cycle less. Run your hand around frames on a breezy day and reseal anything that's cracked or gone brittle.
Wash and inspect the deck
Clean off the winter grime and look for soft boards, popped fasteners, and loose railings while you're down there. Catching a wobbly rail now beats finding it with a full deck of guests.
Eyeball the roof from the ground
Use binoculars to scan for lifted or missing shingles, damaged flashing, and debris after spring storms. Note what needs work and hire a roofer rather than walking the roof yourself.
Empty and clean the dehumidifier
If you run one in a basement, empty and wipe the tank so standing water doesn't grow mold and musty smells, and rinse the filter so it keeps pulling moisture.
Good maintenance rhythm
The checklist gets you through summer once. Keep things running smoothly summer after summer by following a regular maintenance schedule.
- Before cooling season: clear the AC outdoor unit and have a pro service it if it's overdue.
- Monthly in summer: check the HVAC filter and replace it when it looks dirty.
- Start of grilling season: leak-test the propane hose and fittings.
- Before summer storms: clear gutters and downspouts.
- Spring: wash and inspect the deck and scan the roof from the ground.
- Ongoing: empty and clean the dehumidifier and reseal failing caulk.