Here's the thing. An HVAC leak might seem like a minor annoyance at first.Maybe you hear a hissing sound or notice your ...

Using dry nitrogen to pressure test a system is a very effective method of verifying a system is leak-free. In fact, I believe it is more reliable than using a standing vacuum test typically performed ...

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 ...

Refrigerants with low global warming potential are more sustainable for the planet, but often more flammable than traditional HFCs. UL Solutions’ Zhongshan laboratory is addressing safety concerns ...