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Heating & Air Conditioning
snowblower_gw

Is it worthwhile upgrading a gas hot water heater for efficiency?

snowblower
16 years ago

We've got a RUDD P40-7 gas hot water heater that's about 9 years old. It has a lousy energy efficiency of .056

Monthly use of 31 therms (which has been typical) of gas cost us $64.48 (Keyspan in Boston) which is $2.08 per therm net.

Is this worth replacing with something more efficient? Our only other gas use is for a 15 year old gas Whirlpool clothes dryer that does 4-6 loads per week and a 10 year old GE range which cooks about 3 meals per week.

Comment (1)

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