RALEIGH — Early summer-like temperatures in spring are putting many air conditioning systems to the test. The hot weather is also keeping repair crews working overtime.

Fixing a home air conditioning system can be expensive, but there are some inexpensive things you can do to prevent problems. Replacing air filters every month can save wear and tear on a home system.

Dan Gladstone of Cary says he wished he had gone a step further signing up for regular maintenance checks.

"The problem basically is that we didn't do what we should have done which is check it out, give it a tune-up or whatever an air conditioner needs," he says.

There is less you can do about preventing problems with the air conditioner in your car. One repair shop owner recommends if you hear a noise in your system, turn it off and get it checked before you do more damage.