Reply To: Rheem water heater making popping sounds

The Tank Rheem water heater making popping sounds Reply To: Rheem water heater making popping sounds

#20988
Bec the Tech
Participant

Hi,
Some of the manufacturers don’t allow horizontal installation. You’ll have to check with the manufacturer of the particular expansion tank you have. Randy is right, though, the thermal expansion tank shouldn’t have anything to do with the noise the heater is making.
Very likely air entrapped under sediment buildup that makes a popping sound when it’s heated and expands and the information page about sediment is an excellent reference.
Rebecca

Water Heater Rescue

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