Four Tips to Get Your Home's AC Winter-Ready

Most people aren't thinking about their air conditioner when winter approaches, which means the unit often gets forgotten and left exposed to the cold. Although an AC unit is tough and designed to handle the elements, taking a few steps to winterize the unit can help prolong its life and prevent maintenance problems later.

1. Shut Off the Power

Your AC can pull a phantom load during the winter months, even when it isn't running. This leads to higher electricity bills. It can also cause stress from power surges to the unit, particularly if you live somewhere with frequent winter power outages. Simply turn off the main control switch to the AC. This may be located on the thermostat, or you can shut off the breaker to the AC as long as it is on its own dedicated circuit.

2. Remove the Debris

Debris around and inside the exterior unit can lead to mold growth and blockages in the unit. You can easily remove the cover of the outdoor unit and remove any dead leaves or other debris that have become trapped inside. Outside the unit, rake up fallen leaves and cut back any grass or weeds growing up against the unit. Not only does this prevent the plant material from clogging up the vents and the compressor fins, but it also allows air circulation so moisture doesn't collect in the unit.

3. Replace All Filters

Every AC system has at least one filter, and some models may have multiple filters. Don't wait until spring to replace these. Leaving dirty filters in place over winter can lead to mold and bacterial growth in the AC, which will then blow all through your home when you turn the system back on come summer. Pull out all of the old filters and dispose of them. Then, use a vacuum cleaner hose attachment to clean out the filter housing thoroughly. Once this is done, put in new filters so your AC is ready to go come the next cooling season.

4. Cover Carefully

Covering the outdoor AC unit in winter can protect against damages from ice, debris, and moisture, as long as it is done correctly. Ideally, you will have a cover made specifically to fit your unit. A true AC cover has an enclosed top and mesh sides so that air can still circulate through the sides and dry out any entrapped moisture. If you must make your own cover, choose something that only covers the top like a piece of plywood cut to fit.

Contact an air conditioning service for more assistance when winterizing your AC.