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- This topic has 3 replies, 2 voices, and was last updated 25 years, 11 months ago by
Bob Langley.
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23 Sep 1998 at 12:28 pm #284438
Anthony Smith
My 40 gallon propane fired hot water heater has been making some new noises lately; I guess I can best describe them as crackling noises. The unit is about 10 years old and we live in an area with extemely hard water. We do have a water softener installed. Is there much likelihood that this noise is the result of hard water deposits inside the unit? If so, what is the best way to check it out? If not, what are some other possibilities?Thanks,Bob Langley Winters, CA
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25 Sep 1998 at 12:16 am #304306
Bob Langley
Participant -
25 Sep 1998 at 12:16 am #304308
Bob Langley
ParticipantBob, You have answered your own question. It is deposits breaking off at the bottom of the heater. Water then overhats when it hits the hot base causing the noise. The quality of the water is your problem, you cant do much about hard water unless you want to spend money on a small treatment plant. Probably not worth the hassle as you have got ten years out of the heater and its on its last legs anyway.: My 40 gallon propane fired hot water heater has been making some new noises lately; I guess I can best describe them as crackling noises. The unit is about 10 years old and we live in an area with extemely hard water. We do have a water softener installed. Is there much likelihood that this noise is the result of hard water deposits inside the unit? If so, what is the best way to check it out? If not, what are some other possibilities?: Thanks,: Bob Langley : Winters, CA
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25 Sep 1998 at 12:16 am #304325
Bob Langley
ParticipantThere are rust and/or mineral nodes on the interior of the center flue. Water gets into them and the heat from the flue turns them to steam. The pressure forces the steam out of the node and when it contacts the water, it collapses back to water. Since steam has a lot of energy, the transition back to water releases that energy in the form of a mini-explosion which is the sound you hear.: My 40 gallon propane fired hot water heater has been making some new noises lately; I guess I can best describe them as crackling noises. The unit is about 10 years old and we live in an area with extemely hard water. We do have a water softener installed. Is there much likelihood that this noise is the result of hard water deposits inside the unit? If so, what is the best way to check it out? If not, what are some other possibilities?: Thanks,: Bob Langley : Winters, CA
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