As summer winds down and cooler weather moves in, your air conditioner deserves a little attention before it goes into hibernation. A few simple maintenance steps now can help extend the life of your system, improve efficiency, and ensure it’s ready to keep you cool when warm weather returns. Here’s a handy end-of-summer checklist for homeowners.
Turn Off the Power Supply
Before doing any cleaning or maintenance, shut off power to your air conditioner at the breaker or disconnect box. This ensures safety while you work and prevents the system from turning on during an unseasonably warm fall day. Just make sure your system doesn’t accidentally turn on during a season when you don’t need it!
Clean the Outdoor Unit
Your outdoor condenser has been working hard all summer, and it’s likely collected dirt, dust, leaves, and grass clippings. Use a garden hose (on a gentle spray setting) to rinse off the fins and remove debris. Be careful not to bend the fins, and avoid using a pressure washer, which can cause damage.
Clear the Area Around the Unit
Remove leaves, sticks, and any clutter within two feet of the outdoor unit. Adequate clearance prevents rust, discourages pests, and allows for proper airflow when the unit is back in service next spring.
Replace or Clean the Air Filter
Even though you won’t be using the AC for several months, swap out the old filter for a fresh one before shutting down the system. This reduces strain on your equipment, helps keep indoor air clean, and ensures you’re starting fresh for the next cooling season.
Inspect the Ductwork and Vents
End-of-season is a perfect time to check for leaks, gaps, or obstructions in your ducts. Properly sealed ducts help your heating system in the winter and your AC next summer run more efficiently. While you’re at it, vacuum vents and registers to remove dust and debris.
Check the Thermostat
Update your thermostat settings for cooler weather. If you don’t already have a programmable or smart thermostat, consider upgrading—it can save money on both heating and cooling bills. A simple switch from cooling mode to heating mode should do the trick as you get ready.
Cover the Outdoor Unit (Optional)
Some homeowners choose to cover their outdoor condenser during the off-season to protect it from snow, ice, and debris. If you do, use a breathable, specially designed cover rather than plastic, which can trap moisture and cause corrosion.
Schedule Professional Maintenance
A professional HVAC tune-up is one of the best ways to prepare your system for winter. A technician can thoroughly inspect, clean, and service your AC, ensuring that everything is in top shape and ready for the next cooling season.
Your air conditioner may not be on your mind once autumn arrives, but taking a little time now ensures it will be ready to run efficiently when you need it again. By following this end-of-summer checklist, you’ll protect your investment, improve performance, and avoid unpleasant surprises next year.
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