# Fred # wrote:
And I guess a UPS that would supply power for more than 1/2
hour or so is going to be costly. So's a generator.

Dan

Should be cheap as not much power required to control the gas fired unit. Go
to any office or computer store and get one suitable for you unit - should
be under $100. You need to replace the UPS battery once every few years.

ahh check the current use of the tankless, if it uses a fan for exhaust
you may need a really large UPS.

did you knpow there are commercial size regular hot water tanks, they
can supply a hotel continiously so one home would be easy.. kinda
pricey but available