Air Conditioner Cools Intermittently

This is Turtle.

Check the outside condenser coil for being plugged up with dirty. This is a common problem with the hvac system when they say what you said.

TURTLE

My AC cools o.k. when the outside air temperature is in the high 60s to low

Thanks for any help.

recirculate?

Most equipment runs best with annual service.

How long do you go between oil changes for your car? Do you or your wife have annual doctor check-ups?

You are past due for service. Keep in mind that a 15 year old unit is about due for replacement. While I don't suggest replacement when basic maintenance will do, if it really needs any amount of work, I would replace it as it is close to the end of its life and a new unit should cost less to operate saving you some of the money you will spend on one.

distribution

Thanks for the reply.

This is a central unit (heat pump) and is about 15 years old. I believe the last time it was serviced was about 8 years ago.

a common problem with the hvac system when they say what

Thanks Turtle. I'll have a look now that I know where to start.

Window unit, or central air, or mini split?

Central. Unit sits outside. I am not the owner; I would have maintained it better.

Could be any of a lot of things. Low on freon, dirty coils, bad air flow, fan going bad.... the list goes on. I'd suggest you call a repair guy and pay him yourself. It's your comfort you're working on.