If defrost isn’t working, something in the chain is broken. This step-by-step approach shows you exactly where to look and what to test.

Part 1 in this series covered defrost cycle problems in heat pumps. Now, let's discuss the second major winter issue: heat pumps stuck in one mode. The customer calls and says the system won't switch ...

When Ezra Shelton pumps five gallons of gasoline, he expects five gallons of gas. "It's gotta be close," Shelton says. "Very close." Shelton is a Marion County Weight and Measures Inspector. During ...

Thank you for visiting one of our most popular classic articles. If you’d like to see updated information on this topic, please check out this recently published article, Interpreting the Sounds of a ...