Thread: Quick basic advice on a dripping gas 40-gal hot-water heater
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Donna Ohl, Grady Volunteer Coordinator Donna Ohl, Grady Volunteer Coordinator is offline
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Default Quick basic advice on a dripping gas 40-gal hot-water heater
On Wed, 13 Feb 2008 11:17:11 -0800 (PST), wrote:
What is this "magic" number of 41,045 BTU?

I think it's the assumed amount of BTUs an "average" household uses in a
day.

I'm sure there are math majors out there in the crowd who could tell us if
that assumption is true given the formulas previously provided.

Sears 33154 (marketed as Kenmore but made by AO Smith) FHR=97 EF=0.63
(41,045 btu/0.63)($1.21106/therm * 1 therm/100,000 btu) x 365 = $288/year

CHOICE B:
Home Depot 183-717 (marketed as GE but made by Rheem) FHR=80 EF=0.58
(41,045 btu/0.58)($1.21106/therm * 1 therm/100,000 btu) x 365 = $313/year


Are any mathematicians out there who can tell us the units on the 41,045?
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