So I live in an ancient house, no insulation and no room for insulation in the walls, giant gaps between the door frame and door (I'm working on that), etc.
In my area daily highs are around 95-100 degrees Fahrenheit. The A.C. currently runs nonstop all day long and manages to keep the house at an unbearable (for me, a fat guy that sweats a lot) 88 during the day and down to 82ish just before dawn. Electricity bills are at $500 per month, compared to $200 in the winter when we didn't have heat running at all.
I moved in near the middle of last summer and was too busy to pay attention to the A.C much, but I'm pretty sure we had it set to 78 or so and it could get it down to that temperature without running nonstop. Viewing my electricity bills seems to confirm this as we were paying around $350 for the same months last year.
So is there any way to identify if my A.C is not working correctly? Cold air is blowing out of the vents, scientifically measured at around 67 degrees by sticking a meat thermometer into the vent
I'm a fairly competent diyer, I work on my car and with electronic devices as a computer engineering major, so I'm not afraid to open things up and tinker with them, but A.C. units is just uncharted water for me, if someone could point me to some guides and schematics I would be very grateful...