For a long time the cooling in my house was just sub par.
I would turn down the control equipment plus nothing would happen.
I changed the air filter, cleaned the inside of the cooling plan plus hoped for frigid air. The most I would get is tepid to cool air blowing around the house. That was the issue, the actual air coming out of the vents was not frigid enough. I did a lot of googling about the problem. All that did was startle myself and others though. I thought I might have a damper issue, wiring concern or need a brand current cooling system. Thankfully I took a few afternoons plus just thought about what could be going wrong. Rather than jump on the horn plus have an a/c business come over, I used my brain. I started looking over my outdoor air compressor plus I realized that it was at an angle. It was not totally on its side, just slightly off centered. I then looked up if that could affect the indoor air handler cooling; Yes, when an outdoor equipment is tilted, all the coolant pushes to one side of the machine. Then when the A/C operates, no coolant is going over the air. So you then get tepid air inside of the home. All I needed to do was get a few stone blocks to level my A/C component out. It was almost immediate where I had frigid air once again. Thankfully I did not have an A/C business come in plus repair this small issue. I figured it out on my own.