If you remove the vapor access port cap on a running air conditioning system, the low temperature brass on the inside of the port will condense water vapor from the air surrounding the port directly onto the port. This is because the air surrounding the port is often below the dew point. Don't remove the port cap until you are immediately ready to connect the gauge. Don't even connect the gauge unless you suspect a problem with the refrigerant charge level. We want to reduce

After servicing or adding refrigerant to an air conditioning system, add locking caps to the service ports if the system is in an accessible area. This reduces the chance of someone tampering with the refrigerant charge. The IMC code that requires this may or may not be adopted/enforced by your local municipality. However, it is a really good idea to do so to keep everyone safe and to keep the refrigerant charge intact. IMC Code 1101.10: " Refrigerant circuit access ports loc

There are a number of factors that lead to a residential NO A/C service call, so make sure to rule out the condensate line/switches! These switches may be wired to break either the R wire which is the 24V power to the thermostat or the Y wire heading to the outdoor unit contactor. To find such an issue, inspect the condensate area for any visual signs such as a secondary pan full of water! A simple issue like a clogged condensate trap or a clog at the condensate pump can lea

I just finished reading the book Unconformed, by Bryan Orr, from HVAC School. I invested about 5 hours spread over three days and let me...