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re: heating and air conditioning
29 sep 2001
ebest wrote:
>"lpogoda" wrote in message
>> top furnaces also have variable speed fans. one guy told me that at least
>> one study found that on average, a furnace fan uses about $500 worth of
>> electricity a year to operate, and that the new variable speed ones on
>> average use only about $85 worth of electricity a year.
>wow, those prices for electricity seem really high! are you talking about
>just running the blower on a gas furnace? my home electric bill for an
>entire year usually runs less than $400.00. i do live in an area that has
>some of the lowest electric rates in the entire us; so maybe that accounts
>in part why i find the prices that you mentioned to be pretty high.
an n-watt thing running 100% of the time uses about $n/year at 10 cents/kwh,
and 400 watt furnace blowers are common, and the power consumption is roughly
proportional to the cube of the rpm or airflow volume, so running a blower
at less than full-speed can save lots of energy. it's quieter, too...
nick
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