On Thu, 7 Feb 2019 17:06:18 -0500, Ed Pawlowski wrote:

We had the AC on a little the past couple of days. I'm curious how much
the electric bill will be come summer. So far, it is cheaper than I've
paid in many years.

My guess is the SEER rating of the HVAC. And do the units match. Mine
is SEER 14, matched. In the desert southwest the bill went down bigly
-- better than it was with a builder grade HVAC unit.