About 20. NOAA’s 1991 to 2020 normals for DFW Airport average 20 days a year at 100 degrees or more, most of them in July and August, on top of 106 days a year at 90 or hotter.
Yes, from supply that was recovered and reclaimed or made before 2020, since U.S. production and import of R-22 ended on January 1, 2020, according to the EPA. Fixing the leak matters more than the recharge, and on a system that old we price replacement alongside it.
Yes. In most Southlake homes the furnace blower moves the cooled air, so a weak blower or a clogged filter can freeze the coil and cut the cooling.
April is a good month. DFW Airport averages about 7 days at 90 degrees or more in May and 22 in June, so a check in April leaves time to catch a weak capacitor or a slow refrigerant leak before the long run of hot days starts.
On a recently replaced system, the usual suspect is an oversized unit that shuts off before it has run long enough to pull moisture out of the air. A repair will not fix that, but a load calculation shows whether the system is the wrong size for the house.
