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 ...

Static pressure refers to the forces acting on the inner surfaces of HVAC system ductwork. It serves as an indicator of airflow and can be affected by numerous forms of resistance, including the ...

Knowing the correct pressure readings for your AC refrigerant can stop a technician from charging you for a gas refill your unit does not need — here is every number you should have on your phone ...