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 ...

Every technician remembers the first time they encountered a ductless mini-split and the panic they felt inside. Not only do these units look unusual, but they behave to some extent differently from ...

Which mini split air conditioners are best? Mini split air conditioners are heating and cooling systems that allow users to control temperatures on a room-by-room basis. They are more efficient than ...