Talk:Programmable thermostat
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Needs discussion of the cancellation of the EnergyStar program and the reasons — Preceding unsigned comment added by 98.125.219.227 (talk) 23:42, 24 May 2011 (UTC)
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Any of you engineers out there I am curious: What is the mean, mode, or median temperature to put a programmable thermostat on during the night in the winter? I know, I know it depends on where you live.Okay, I live in southwest Pennsylvania.
My idea is that the lower I put the temperature at night the more I am wasting in the morning when the thermostat warms the house to optimum temperature.
For example, I have the temperature set at 62 degrees at night and then 67 briefly in the morning when the household wakes up. The natural gas furnace continually runs during this time when the temperature outside goes below 40 degrees F.
Should I reset it higher during the night on average? Does it matter? Am I wasting my time asking this question because the savings is nil?
Thanks, P831
Calculating energy savings is simple. Take the delta T from indoor set point and setback point. The energy savings as a % are proportional to the difference. That is delta T for set point (daytime occupied temp) say 70 and outside temp of 40 your delta T for set point is 30 degrees. If your set back point (unoccupied or night temp) is say 60 and outside temp is 40 then setback delta T is 30. So your energy saving while in setback is 1 - (30/40). Work up a spread sheet for hour by hour. Typically if you are careful about setback when unoccupied and at night you'll save 15 to 30%. Programmable t-stats have a very poor user interfaces, but if used as proscribed you they do save energy. — Preceding unsigned comment added by 98.125.219.227 (talk) 23:57, 24 May 2011 (UTC)