How a Central Air Conditioner Works

Cutaway diagram of an air-conditioning system including a condenser, an evaporator, and a compressor.

How does an air conditioning system work? This expert article, along with diagrams and video, clearly explains how a central air conditioner cools a house by cycling refrigerant through its system and delivering chilled air through ductwork. A central air conditioner is like a giant refrigerator for your house. In fact, it employs the same […]

AC Not Working | Central AC Troubleshooting & DIY Repair

A York outdoor air compressor with leaves and pine needles sitting on top.

In This Article: Central AC Not Working At All AC Not Cooling But Running Air Conditioner Not Blowing Air Water Leaking from AC Air Conditioner Makes Noise Air Conditioner Won’t Turn Off Is your AC not working? If your central air conditioner is not cooling right, save money, time, and get comfortable again with these expert DIY air […]

8 Ways to Cool Your Home Without AC

ceiling fan

In This Article: Ventilate When You Can Get the Air Moving Minimize Heat Gain Reduce Indoor Humidity Turn Off Heat-Generating Lights and Appliances Weatherize Your Home Install Heat-reflecting Window Film Let Hot Air Out of Your Attic Want to cool down your house without turning on the AC? Keep your home comfortable even on the […]

What Is a BTU?

gas furnace burners

A BTU is the basic measurement used for rating how much energy it takes to produce heat. It’s used in determining the efficiency of air conditioning equipment, furnaces, and any appliances that heat—such as water heaters, ovens, and fireplaces. Here is what it means and how to convert BTUs into other energy measurements. When buying […]