this post was submitted on 16 Nov 2024
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Furnace/water heater replacement.
Can low water pressure in the whole house be attributed to a bad water heater?
Low water pressure is usually a sign of low water pressure.
Only if you have good pressure on cold water but weak pressure on hot.
Whole house suggests an issue with the supply line, for example an old galvanized pipe which is filling with rust deposits.
No.
Ours was exactly that, the oulet and inlet pipes in the tank corroded badly. Cold pressure fine, hot pressure was flow restricted
European here without education for a plumber, just barely scratched the profession for a few years.
Low water pressure occurs in bigger complexes with a pipe to small for the consumers. The water pressure in suburbans and cities comes directly from the local water station.
If you have issues with this, there are special armatures for low water pressure.
The cheapest improvement is replacing the water disperser with a current one.
Other then that, one could install a pump to improve the water pressure, but these things are expensive and have high maintainability costs due to pumping drinking water, not water in a heater pipe.
Perhaps your pipes are too wide.
Bad PRV (Pressure Reducing Valve). They only last so long. If you have high water pressure (over 120psi) coming in they last a few years tops. If thatβs the case, get one with 2 diagrams and itβll last you 10 years at a minimum.
There are lots of states that will straight up ban you from doing this without a gasfitter ticket.