August in Pennsylvania is no joke. The dog days of summer bring sticky humidity, record-breaking afternoons, and an AC unit that has been running nearly nonstop since June. By this point in the season, your system has already put in a full summer’s worth of work, and there are still warm weeks ahead.

The good news? A few simple habits can help your home stay comfortable for the rest of the season and set your cooling system up for a strong finish before fall arrives. Here’s what to check this month.

Change Your Air Filter

If you haven’t swapped your filter since spring, August is the time to do it. A clogged filter forces your AC to work harder, which means higher energy bills and more wear on your equipment. During peak cooling season, filters can get dirty faster than you’d expect, especially in homes with pets or anyone with allergies.

Pull the filter out and take a look. If it’s gray and visibly dirty, replace it. Most filters should be changed every 30 to 90 days. Stock up on a few extras so you always have one on hand.

Clear Around Your Outdoor Unit

Your outdoor condenser unit needs room to breathe. Over the summer, grass, weeds, and debris can build up around the sides and top of the unit, blocking airflow and making your system less efficient.

Turn off the unit and clear away any vegetation growing within two feet of it. Give the exterior fins a gentle rinse with a garden hose to remove dirt and buildup. A clean condenser runs cooler and costs less to operate.

Check Your Condensate Drain Line

Your AC removes moisture from the air as it cools your home, and that water drains out through a condensate line. By August, algae and mold can clog that line, causing water to back up and sometimes overflow into your ceiling or walls.

Find the drain line (usually a PVC pipe near your indoor air handler) and pour a cup of distilled white vinegar down it. This kills buildup before it becomes a blockage. If you notice water pooling near your unit or see a float switch tripping your system off, call a technician right away.

Use Your Ceiling Fans the Right Way

Ceiling fans don’t actually cool the air, but they make a room feel several degrees cooler by creating a breeze. During summer, your fans should spin counterclockwise when viewed from below. This pushes cool air down, making the room feel more comfortable without lowering your thermostat.

Using fans in occupied rooms lets you set your thermostat a few degrees higher without any drop in comfort, which adds up to real savings on your energy bill.

Block Heat at the Windows

Windows let in a surprising amount of heat during August afternoons. Closing blinds or curtains on south and west-facing windows between noon and early evening keeps your home noticeably cooler and takes some of the pressure off your AC.

This is a no-cost fix that makes a real difference, especially in rooms that tend to run warm.

Schedule a Late-Summer Tune-Up with Madsen

Many homeowners schedule HVAC tune-ups in the spring before the cooling season starts. But if your system has been running hard all summer, a late-summer check-up is worth considering. A technician can catch issues that developed over the season before they turn into breakdowns, and having your system inspected now also gets it ready for the transition to heating season. Catching a small refrigerant leak or a worn capacitor now is far less disruptive than dealing with a failed system on the hottest day of the year.

Since 1946, Madsen, Inc. has helped families in Pennsylvania stay cool, comfortable, and worry-free. Whether your AC needs a tune-up, a repair, or a fresh filter, our certified technicians are ready to help. Call Madsen at (610) 356-4800 to schedule your late-summer service appointment. A little attention now goes a long way toward a cooler August and a smooth start to fall.