We have a four-year-old central air conditioning system that ran
fine until this summer, but now isn't doing so well. I don't believe
the air is coming out as cool as it used to, and the system runs
almost constantly but does not cool the house as much as it
(We have a "Space Pack" system, by the way.)
The company that installed it came out twice in one week to check
it, and checked the attic components as well as the outside unit.
They have found nothing wrong. However each time they said it
needed "half a pound" of freon. Does that sound right?
The service order from the second guy who came out said he
used 1.5 (lbs?) of CB222, and that he "moved the Exp. bulb."
We have replaced the filters. Today as a test I turned the thermostat
way down (from mid-70s to mid-60s). The system ran constantly
but the house only got a slight bit cooler.
Any idea what the service guys might want to check next?