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re: thermostat settings
30 sep 2000
kasper wrote:
>...i had hot water heat in a three story single family home ... i had
>to crank up the boiler at least an hour before anyone would be getting
>out of bed. once the water was hot, it really did not cost all that
>much to keep it hot ... and then in the evening we cut back again a
>couple of hours before bedtime since it generally took quite a while
>for the temperature in the house to fall. with forced air, you get
>hot air right away so you do not need to crank up the heat real early
>before getting up but your place will probably cool much more quickly
>in the evening if you use a lower setback for sleeping.
sounds like an advantage for forced air. if the house stays cooler for
more of the day, there's a net energy savings compared to hot water...
the water in the system itself doesn't add much thermal mass compared to
the house, say 25 btu/f vs 1,000, for a 32x32x8' tall house with 128' of
3/4" pipe and 2,000 ft^2 of 1/2" drywall.
nick
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