Quote:
Originally Posted by look 171
2500 sq's is too large for tank less. it will work, but you will wait for a bit to get hot water. Ideally, you should have two small heaters, same for the tank less, but most homes are build or designed that way. If energy saving is what you are after, forget about tank less. there is a hefty entrance fee and the catch up time will be a long wait.
Do you have a recirc. pump and how far apart are the baths and kitchen? All that will affect the delivery of hot water from the tank less heater. Then, there's the scale filter and an expansion tank if you have recirc. pump (timer and thermo. switch is necessary to avoid continue running of heater).
Life span of new heaters are about 10 years. Now they are twice as much, just like Sammy mentioned. 20 years life span is the great heater of the old. AO smith makes good heaters.
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no reciRc pump and the water heater is in the garage master bath is second story in the back a long run...takes a little while for hot water to get there,