Clean your AC coils. Change the filter. That’s it.

Yes, you should prepare your AC for spring by changing the filter and cleaning the coils. That’s basically the whole job. Do it before the first hot day or you’ll be sweating while you work.

Filters are easy: buy the right size (check the old one), and swap it out. Every three months is fine, but spring is a good reminder. If you have a reusable filter, rinse it with a garden hose and let it dry completely.

Coils are slightly more work but not hard. Turn off the power to the unit first. Remove the outer cover (usually a few screws). Use a soft brush or a vacuum with a brush attachment to gently remove dust from the fins. Then get a coil cleaning spray from the hardware store, spray it on, let it foam, and rinse with a gentle stream of water. Don’t bend the fins. Straighten any bent ones with a fin comb if you’re feeling fancy.

That’s it. Fifteen minutes of work saves you a service call and keeps the AC running efficiently.

Your electric bill will thank you.