Posts Tagged: water heater thermal expansion

How to Set Water Heater Expansion Tank Pressure Correctly

The Right Way to Adjust Expansion Tank Pressure Quick Summary Setting the proper water heater expansion tank pressure is critical for protecting your plumbing system from thermal expansion damage. The expansion tank pressure should match the home’s static water pressure, measured when no plumbing fixtures are in use. If the pressure is set too low, the tank can become waterlogged and lose expansion capacity, rendering it useless. If the pressure is too high, the tank can’t handle pressure spikes, leading to a dripping T&P valve, pipe stress, and early plumbing … Read More