Have been lurking and based on this site I have decided to replace my 20 year old Ruud 50gal rental gas water heater with one of the BW GX series. But trying to make sure I choose the right one. So far the old 50 gal. tank seems to be adequate (but I think its useful life must be near an end) ... the next tank will be required to handle my two children (9 and 11) into teenage (and later?) years so I am anticipating some increase in demand.
The 25 gallon unit would seem to be more efficient (2 inch vs 1 inch insulation) and presumably I am not heating a lot of water when not in use. This would seem to mean some saving - not sure how much though.
I am worried that if I buy the 25gal unit - I may regret this later and need (?) the 55gal unit
There is a well known sizing chart on BW site that suggested the right tank size... although so far I can't seem to find a combination that recommends either of the GX tanks. A quick call to BW and the sales staff endorsed the 25gallon unit. I accept the fact I know very little about this and would happily take that recommendation but it seemed a little counter intuitive.
Incidentally should I be concerned about ventilation given that the tank will occupy the same location as the current one - adjacent my gas furnace that is also atmospheric venting (that is to say it is Direct Vent exhaust but draws combustion air from inside the house)
Any help/suggestions on the right size unit, relative efficiency (and combustion air demand) gratefully accepted
thanks!
(great site!)
The 25 gallon unit would seem to be more efficient (2 inch vs 1 inch insulation) and presumably I am not heating a lot of water when not in use. This would seem to mean some saving - not sure how much though.
I am worried that if I buy the 25gal unit - I may regret this later and need (?) the 55gal unit
There is a well known sizing chart on BW site that suggested the right tank size... although so far I can't seem to find a combination that recommends either of the GX tanks. A quick call to BW and the sales staff endorsed the 25gallon unit. I accept the fact I know very little about this and would happily take that recommendation but it seemed a little counter intuitive.
Incidentally should I be concerned about ventilation given that the tank will occupy the same location as the current one - adjacent my gas furnace that is also atmospheric venting (that is to say it is Direct Vent exhaust but draws combustion air from inside the house)
Any help/suggestions on the right size unit, relative efficiency (and combustion air demand) gratefully accepted
thanks!
(great site!)
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