Enthalpy? A Fancy Word for Heat! This program presents the important concepts of pressure enthalpy in a manner that will appeal to the service technician. Each refrigerant has its own properties and ...

The temperature on a summer day may be in the 80s or 90s. So why does it feel so much hotter? That's the heat index. Here's how it works.

As a late-summer heat wave hits Ohio, use this heat index chart to see how hot it feels outside.