Air conditioners are electrical appliances. As such, a number of the problems that can and do occur with an air conditioner are electric in nature. One of the most common electrical problems experienced with air conditioners is worn electrical connections. Here's a closer look at what this problem is, the signs your AC unit might have it, and what an HVAC contractor can do about it.

What is a worn electrical contact?

Electrical contacts are spots where two electrical components come together. This could be wiring and another piece of wiring, or it could be wiring and a metal plate. Air conditioners have a number of electrical connections. For example, there is a connection between the fan component and the condenser. There are several contacts between various parts inside the condenser, too. 

Sometimes, one or both components that form a connection may become worn. A wire may become a little shuffled to the side of where it should be. Or, fiction may cause a metal plate to wear down. These issues are referred to as "worn electrical contacts."

What are the signs of a worn electrical contact?

Usually, if your air conditioner has a worn electrical contact, either all or part if it won't turn on. The condenser may click on, but the fan may not run. Or, the fan might run, but the air is never cool because the condenser is not running. Sometimes, the AC unit might not kick on at all. It all depends on which connections are worn and how worn they are. Sometimes, an AC unit may go from working to not working overnight. Other times, it may grow more temperamental as the wear intensifies.

How do HVAC contractors fix worn electrical contact?

If you suspect you have a worn electrical contact, your HVAC contractor can visually inspect your system to see if they spot any wear and tear. They can also use a voltmeter or electrical tester to test various components and see where the electricity stops flowing. Once they've located the worn contact, they can replace or repair that part. In the most serious cases, they may need to have an electrician come do some of the work. Most HVAC companies employ electricians for this reason.

If your AC unit is not working correctly, a worn electrical contact could be at fault. Have an HVAC contractor look over the system and offer their input. For more information on AC repair, contact a professional near you.