"Jim-Poncin" wrote in message
nk.net...

This is the third summer of usage for our air conditioning unit. It's an
external unit that works through the central forced air system.

This summer the KW hrs usage is up about 60 pct over the last two summers.
Obviously, settings and weather influence it, but I'm wondering if it
could
be that it needs maintenance of some kind that would make it more
efficient
and use less electricity.

Any thoughts or ideas what I should look for to make sure it's not running
inefficiently?

Gracias

Do you change the oil in your car?
Do you change the filters every 30 days?
Why would you assume that something designed by, installed by man would not
need a check up?
I have my unit checked every year before I need it. Cheap insurance as far
as I am concerned.

Where I live has been more humid than usual this year. Yep the bill had
climbed a bit.