On 6/23/2017 3:52 PM, Wayne Boatwright wrote:
> On Fri 23 Jun 2017 12:35:34p, Gary told us...
>> Mine is set at 75 and I turn it off when I leave for work and also
>> when I go to bed at night. I do use a bedroom fan though.
>>
>> Been hot and humid here lately so even 75 feels great to me.
>>
>>
>>
>
> Unless you're gone for days at a a time, it isn't economical to turn
> it off and on, or even to raised the temperature setting rather high
> and then cool it down to much lower. Your system works much more
> efficiently at a constant setting, or varying it only by a few
> degrees. According to HVAC engineers, this is a proven fact.


Ha. When I just wrote that, I KNEW someone would refute it like you just
did. I know the theory but believe me, I've lived in this apartment and
I tried it both way -

1) set ac and leave it on all summer at constant temp
2) same temp but turn off and on as I come and go

I've done that and my off and on saves half the electricity each month.
Maybe because my place is small (1100 sq feet). It does retain the cool
when I turn it off in the morning. I come home 10 hours later...it's 95
outside and maybe 78 inside...just residual coolness.

I know that "leave it on" is the popular way and maybe that works on
larger houses. I've done both ways though and no way leaving the ac on
saves me money....equals about twice the electric bill when I've done it.

Theories are good and I understand that theory but it does not work in
my little abode.
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