For summer home maintenance, start with the systems that work hardest in heat and storms: AC airflow, dryer venting, gutters, irrigation, refrigerator coils, alarms, grill safety, plumbing leaks, and basic air sealing.
Quick summer checklist
- Check the HVAC filter and replace it if dirty.
- Clear leaves, weeds, and storage from around the outdoor AC unit.
- Confirm the AC condensate drain is not backing up.
- Clean the dryer lint screen and check the exterior vent flap.
- Test smoke alarms and carbon monoxide alarms.
- Clean refrigerator coils if they are dusty.
- Check gutters and downspouts before heavy summer rain.
- Run irrigation zones and look for broken heads or soggy spots.
- Clean grill grease trays and check gas connections before heavy use.
- Look under sinks and around toilets for slow leaks.
- Check obvious air leaks around doors and windows.
Check the HVAC filter first
Summer AC problems often start with airflow. A clogged filter makes the system run longer and can contribute to frozen coils or weak cooling. Check the filter monthly during heavy cooling season and replace it when it is visibly dirty, bowed, or loaded with dust.
Save the filter size somewhere you can find it later. The airflow arrow should point toward the furnace or air handler, not toward the return grille.
Clear the outdoor AC unit
The outdoor condenser needs open airflow. Remove leaves, weeds, grass clippings, and storage items around the unit. About 2 feet of clearance is a good practical target when the space allows it.
If the coil is covered with cottonwood fluff or dirt, turn the system off and rinse gently with a garden hose. Do not pressure wash it. The fins bend easily, and bent fins reduce airflow.
Check the condensate drain
Air conditioners pull moisture out of indoor air. That water should leave through a condensate drain. If the line clogs, water can end up in a pan, ceiling, wall, or floor depending on where the equipment sits.
Look for standing water near the indoor unit, a musty smell, or water in an emergency pan. If the system shuts off and you see water near a float switch, stop and clear the drain or call HVAC service.
Check dryer vent airflow
Clean the lint screen every load. In summer, also check whether the exterior vent flap opens strongly while the dryer runs. Weak airflow, hotter laundry rooms, or loads that need a second cycle can point to a restricted duct.
Lint buildup is a fire risk and a performance problem. If the duct is long, crushed, packed with lint, or hard to access, have it cleaned properly instead of guessing.
Test alarms
Press the test button on smoke alarms and carbon monoxide alarms. Replace batteries when needed and replace full smoke alarms when they reach the age printed on the label, often 10 years for smoke alarms.
Summer brings more grilling, storms, generator use, and travel. Working alarms are boring in the best possible way.
Clean refrigerator coils
Dusty refrigerator coils make the compressor work harder. Summer kitchens are warmer, doors get opened more often, and that extra load matters. Clean coils every 6 to 12 months, or sooner if you have pets or visible dust.
Check the manual for coil location and safety steps. Coils may be under the fridge, behind a toe grille, or on the back.
Check gutters, downspouts, and irrigation
Summer storms expose drainage problems fast. If gutters overflow, check for debris, sagging, or a clogged downspout. Water should discharge away from the house, not next to the foundation.
Run each irrigation zone and watch it for a minute. Look for broken heads, overspray against siding, soggy patches, and dry spots. A small leak underground can waste water for weeks before it looks dramatic.
Inspect the grill before the busy season
Clean grease trays, scrape heavy buildup, and check burner ports. For gas grills, use soapy water on hose connections to look for bubbles that indicate a leak. Do not use a grill with a leaking hose, cracked regulator, or strong gas smell.
Look for leaks and air gaps
Open sink cabinets and check for dampness, swelling, rust, stains, or musty smells. Check toilet bases for softness or water marks. Small leaks are easier to deal with before vacation season and heat make everything smell worse.
Then check doors and windows for obvious damaged weatherstripping or cracked caulk. This will not fix a bad AC system, but it can reduce heat gain and make rooms more comfortable.
Good maintenance rhythm
- Monthly in cooling season: check HVAC filters and test alarms.
- Every load: clean the dryer lint screen.
- Every 6 to 12 months: clean refrigerator coils if dusty.
- Spring and summer storm season: check gutters and downspouts.
- Before heavy grill use: clean grease trays and check gas connections.
- After heavy weather: walk the outside and look for water going where it should not.