As a maintenance person, all my units are fixed orifice, 1.5- 2 ton units, split systems.
To acurately measure the charge and determine superheat I know I should be
using a sling phychometer to determine wet bulb temp in an apartment.
Is there any way to fake it ?
For example if the weather report determines the humidity level in the area,
is there a standard rule you can use , for example outside humidity + 5 percent more of humidity to determine inside wet bulb, or is this just rediculus ?