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Posted by CJT on February 16, 2008, 6:40 pm
Donna Ohl, Grady Volunteer Coordinator wrote:
> On Sat, 16 Feb 2008 14:14:46 -0800, Anthony Matonak wrote:
>
>>I'm only one person but I average about 5 therms a month.
>
>
> Wow. 5 therms a month is extremely low, it seems to me.
>
> The US Department of Energy assumes the "average" houshold uses a bit less
> than 1/2 a therm a day *just* for the water heater alone!
>
> 43,302 kJ/day = 41,045 Btu/day = 0.4105 therm/day
>
> That would be 15 therms a month just for hot water for the average
> household in America.
FWIW, we're apparently almost exactly average.
I wonder if Europe uses the same amount?
>
> REFERENCES:
> Calculating water heater costs for meaningful comparisons
> http://www.daviddarling.info/encyclopedia/W/AE_water_heater_cost.html
> 365 × 0.4105/EF × fuel cost (therm) = estimated annual cost of operation
>
> Review of hot water heaters
> http://www.consumersearch.com/www/house_and_home/water-heaters/review.html
> 365 X 0.4105/EF X Fuel Cost (therm) = estimated annual cost of operation
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