Expansion tank question

Discussion in 'Water Heater Forum, Tanks' started by chaoster, Apr 4, 2010.

  1. chaoster

    chaoster New Member

    Messages:
    42
    I have a AO Smith 40 gallon gas hot water heater. Sometimes water sprays out the prv. I have an expansion tank connected to the boiler, do I need one for the water heater or is there something else wrong?
  2. hj

    hj Moderator & Master Plumber Staff Member

    Messages:
    26,512
    Location:
    Cave Creek, Arizona
    The boiler one is an independent unit, and has nothing to do with your water heater thermal expansion. IF you need a water heater expansion tank because of the dynamics of your system, and you have not told us anything that indicates whether you do or not, then you need an additional one at the water heater, besides the one on the heating system.
Similar Threads: Expansion tank
Forum Title Date
Water Heater Forum, Tanks Expansion Tank Question - also a water pressure question afterthought! Aug 8, 2014
Water Heater Forum, Tanks two water heaters, new whole house filter, max 90 psi, can I use one Expansion tank? Jun 10, 2014
Water Heater Forum, Tanks Expansion tank, suggestions to brand an size. Jan 13, 2014
Water Heater Forum, Tanks Thermal Expansion Tank Jan 5, 2014
Water Heater Forum, Tanks specific thermal expansion tank recommendation? Nov 21, 2013

Share This Page