Central AC cooling rate? (heater, insulated, furniture, room)

[Grenoble_slopes]

I have a 2 ton AC for a 1000 sq ft home.When it was 80F outside, it took over an hour to drop the indoor temperature from 75F to 72F. Is this normal?

I'm unfamiliar with AC so I don't know if it's functioning as it should or not. I'm wondering if I should have it checked for problems. The air filter is new. The home is well insulated (Upper Midwest - cold winters) and the heater warms the house very quickly.

[ShaneSA]

I would have it checked. it may need charging. It may be the house. there are alot of variables to consider. the best way to find out is have the system checked by a pro.

[Charles]

Originally Posted by Grenoble_slopes

I have a 2 ton AC for a 1000 sq ft home.When it was 80F outside, it took over an hour to drop the indoor temperature from 75F to 72F. Is this normal?

I'm unfamiliar with AC so I don't know if it's functioning as it should or not. I'm wondering if I should have it checked for problems. The air filter is new. The home is well insulated (Upper Midwest - cold winters) and the heater warms the house very quickly.

That doesn't sound too bad. If it were significantly faster then the unit would cycle a lot and chill the place. The AC is designed to maintain temperature. Still a Manual J calculation will provide the most accurate sizing (two tons for 1000 sqft is probably about right).

Other variables: Lots of sunlight shining in the house radiating heat, lots of "heat sources" like warm furniture, walls, counters, etc which have stored a lot of heat.

Get a thermometer and measure then supply air. If it is around 13F-15F cooler than the room air then it looks like the A/C is working properly.

[harry chickpea]

What Charles said. A little slow, but within range. What you don't see is the reduction in humidity, which is a major part of AC. If you have a unit that cools too fast, the air doesn't all get drawn across the coils, so you end up with a cold damp house. 20 degree drop across the coil is about right, with losses, 15 at a register is good. 13 would only be at the end of a long run.