Thanks to everyone who helped out with the direct vent/power vent water
heater and boiler question a few days ago.
Now I have another question. I found many sites with tankless water heaters
which have very high efficiency. But I am worrying whether this will cause
unstable water temperature in practice. Could you point me to some reviews,
or share your own experiences with me?
Also, I am not clear what is the difference between a hot water boiler and a
water heater. I know that a boiler has a lot more heat capacity (in
BTU/hr). Howeve, I don't know whether it has a water tank as well, and
whether the size of the tank is important (it is not listed in many
specifications). I also appreciate help on that issue.
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On Sat, 06 Aug 2005 13:49:59 GMT, "Feng Ouyang"
A boiler is an indirect system using steam to heat the water.
They were popular in recirculating systems, such as found in
laundromats, but are gradually being replaced by tankless heaters.
Hot water 'boilers' generally weren't designed to heat the water in
a single pass, and required an external tank and recirculating
pump, making them rather inefficient.
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