A variable frequency drive (VFD) fails to vary the discharge-air fan speed. A motor overheats and fails prematurely. Programmable controls that generally operate without issue suddenly experience ...

ELECTRICAL FAILURES: “Although there are a number of mechanical problems that cause an air conditioning system to fail, the vast majority — over 75 percent — of air conditioning system failures are ...

In an older house, the first system to fail is rarely the one you are watching most closely. The real tipping point is a mix ...