Optimizing Furnace Fan for Air Conditioning
I am wondering if I can also tweak the fan setting for cooling. I am holding my cooling setpoint OK, but I have the sense that my air conditioning is not as strong as before, i.e. it seems to run longer than it used to. Last fall I pulled off the aircon unit housing and dusted and washed the cooling fins, so I think my owner maintenance is up to date.
With a thermostat setpoint of 76F, and measured as such at the return plenum, the output is around 62F, a difference of 14F. I am reading that the difference should be between 16F and 22F as a general rule of thumb.
I have the option of tweaking the cooling airflow up or down. Can/should this be used to adjust the output temperature?