Water heaters are particularly susceptible to breaking with high water pressure and the warming spring months. This is due to thermal expansion. A water heater that is too full due to high water pressure and with no expansion tank can break at the seam when the water inside gets hot.

How do I fix the water pressure in my hot water heater?

If you get a burst of water flow which seems like an over-pressure, it may be time to replace the pressure reducing valve in the water supply line. I would put a pressure gauge on the cold water. Then run the water for a few seconds until the pressure stabilizes in the line.

What would cause a sudden increase in water pressure?





Common causes of surges in water pressure include fluctuating appliance water demands, fluctuations in pressure from the municipal source, a faulty water pressure regulator, or issues with the pressure tank if you have a well water system.

What causes excessive pressure in a water heater?

The Temperature and Pressure Relief Valve, or T&P relief valve, is a safety valve in every water heater. When the temperature of the water is too high, the valve opens and releases water that causes the pressure to increase.

Can a hot water heater cause high water pressure?

In short, when the temperature or pressure of the water heater gets too high, the valve opens, and releases water that’s causing the increase in pressure. The problem is that many homeowners don’t realize they need to be testing their T&P valves every 6 months, and replacing them every 5 years.

What happens if water pressure is too high?

This is a serious concern—water pressure that’s too high is difficult to contain, and could leak to plumbing leaks, worn seals, and damaged fixtures. It could even shorten the lifespan of your appliances that depend on a water connection like your washing machine, ice maker, dishwasher, and more.

How high is too high water pressure?





80 psi

Is your water pressure too high? Most plumbing fixtures are designed to handle a maximum water pressure of 80 psi or lower. If your water pressure is higher than that, it can potentially cause the parts for your faucets, water heater, toilets and shut-off valves to fail.

Why does my water pressure keep going up and down?

Problems like leaks, clogs, and trapped air can definitely contribute to the water pressure going up and down. Some of these issues are easy to identify. Some of the most common and easily resolved pipe problems include… Bad or Corroded Connection – The connection at the stop valve can weaken or corrode.

Does water heater affect water pressure?

Believe it or not, and this is believable, your hot water heater can affect the pressure for both hot water and cold water.

How do I turn my water pressure down?



First, shut off the water at your house’s internal water main. Turn the shut-off valve completely to the right. Loosen the locking nut on the water pressure regulator by turning it to the left. Turn the adjusting screw to the left to reduce the water pressure or to the right to increase the water pressure.

Can expansion tank cause high water pressure?

Though usually not a problem, thermal expansion can lead to high water pressure and cause expensive problems. The main reason to have an expansion tank in a domestic water system is to prevent the damage from high water pressure, defined as anything over 80 psi.

What pressure should my hot water expansion tank be set at?

between 50 and 60 PSI



The recommended water pressure is between 50 and 60 PSI. Thermal Expansion Tanks contain an air bladder which is pressurized with air, and expands and contracts to absorb the expanded water from the water heater. needed. Check the air pressure in the Expansion Tank using a tire gauge.

How do I know if my water heater expansion tank is bad?

If your Thermal Expansion Tank is hanging from a pipe, you would push the Schrader Valve (air valve), located on the bottom of the tank, if the air is released then the tank is working properly. If nothing or water comes out your tank is bad and needs to be replaced.