I think the biggest consideration is finding a competent, honest contractor
who will determine exactly what kind and size unit that you need.

My outside unit is 18 years old (Trane) and still working Ok, but in the
summer my electricity bill is really high and my unit seems to run a lot.

I have considered replacing the unit with a higher SEER (currently have a 12
SEER), but each of the AC contractors that I have talked to just come in,
look at the old unit, then give me a paper estimate. None have bothered to
measure rooms, look at the attic, do load calculations, etc. One of the
contractors that I talked to advertises heavily on the radio in my area,
Dallas, but all he did was take a quick look around at my old unit, give me
a $$ estimate, and ask when I wanted to start the installation. I did not
call him back

Hopefully, you will have better luck in finding a good contractor.
"KOS" wrote in message
ups.com...
Hi, I am planning on putting in central air in my house. Been looking
at diff units. Not familiar with Lennox- anyone deal with them before?
How are the units?? THANKS!