I think the most important thing about this thread is to educate yall on air conditioners.
I recently moved from a condo with a wall unit to a house with an HVAC system with outdoor condensing unit.
Our home inspector would not turn it on during the inspection b/c the outside temperature was below 50. He signed off on the house and noted that he'd come back in a month to check the HVAC b/c we'd still be going through mortgage crap by then so the timing worked out.
"Air conditioning manufacturers and HVAC professionals agree, an outdoor condensing unit should not be run in cold weather for any reason. The cause of this prohibition is the oil used to lubricate the compressor. There’s a significant amount of oil in the compressor and it functions like oil in your vehicle’s engine.
Just like engine oil, compressor oil for condensing units has different grades. The oil that is used in central air conditioner compressors is summer-weight oil. It is a heavy grade of oil that works well in warm conditions. It can heat up and still provide the compressor with the lubrication and protection required, something lighter grade of oil could not do. In cold weather, the oil is too thick for the safe functioning of the compressor.
Most HVAC technicians and home appraisers won’t run a central air conditioner unless daytime temperatures are above well above 60 degrees F for at least 2-3 days prior to the test."
Will Running an Air Conditioner in Cold Weather Damage It? | WebHVAC.com