It is 110 degrees out, we have set the central air for 70 but we can not seem to get the temp under 74 degrees, the unit is always running is it just too hot out for the unit to keep up, or is something wrong with the unit
Heating & Cooling - Whirlwind - FH-778 Air Conditioner
Answers & Comments
You probably hit the nail on the head. You are currently getting 36 degrees difference in temp. That's pretty darn good. Most units would struggle with that. Running all the time is usually an indication that the unit could be somewhat undersized too. 74 degrees is not that bad under those conditions.
I agree you can normally get a 20 drop in temp. from outside ambient. The system sounds like it is doing it's job.