Does precooling save energy? if not, is it worth it?
We were encouraged to precool our house to use less energy during peak demand (and pay electricity rates based on demand). But our house seems like it runs all night and morning to cool down enough to not run during the maybe 5 to 6 hours of peak time when it heats up without the AC running.
We have done air sealing and insulation, but need to replace our not so efficient 30+ year old furnace, which could factor into how long it takes to cool our house back down, but makes me wonder if we set it at 76 degrees all the time (maybe higher) if it would run less over all.
If so, which is more important, using less during peak demand times or using less overall?