I've heard the phrase, “It's too cold to set the charge!” for as long as I've been in the trade. “We need to come back and set the charge,” or we need to come back to do XYZ [some other thing]. Granted, there are cases where you do actually need to come back, but in […]

In residential, most techs and installers size the suction (vapor) and liquid lines to the stubs on the equipment. In larger built-up systems, sizing the piping is rarely the responsibility of the technician. But what happens if we show up to a job where the lines cannot be (reasonably) replaced because the size is different? […]

I am consistently surprised by how much false information still circulates out in the field, and one of the ones I hear often is the idea that you cannot or should not “top-off” or recharge R410a systems on top of an existing charge of R410a when the system is low. So, to be clear, before […]