Why residential water heaters do not require expansion tank?
Why residential water heaters do not require expansion tank?
(OP)
As the question states, I was wondering why residential water heaters do not require expansion tanks?
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Why residential water heaters do not require expansion tank?
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RE: Why residential water heaters do not require expansion tank?
In residential applications, the expanding water can dissipate exess pressure back into the main piping.
In commercial applications, the check valve or backflow preventor prevents this.
However, more and more residential applications are requiring the backflow preventor. An expansion tank should then be installed.
RE: Why residential water heaters do not require expansion tank?
What's even more annoying is that city demands that the backflow valves be checked and certified periodically, at your own expense, of course,
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RE: Why residential water heaters do not require expansion tank?
RE: Why residential water heaters do not require expansion tank?
RE: Why residential water heaters do not require expansion tank?
RE: Why residential water heaters do not require expansion tank?
Also, like someone else eluded to, the domestic hot water heater has a temperature and pressure relief valve that will discharge (leak might be a poor term) to drain when necessary.
RE: Why residential water heaters do not require expansion tank?
RE: Why residential water heaters do not require expansion tank?
When the boiler heats up, some water drips from the valve. That's just the way it works.
RE: Why residential water heaters do not require expansion tank?
RE: Why residential water heaters do not require expansion tank?
RE: Why residential water heaters do not require expansion tank?