Do you need an Expansion Tank if you have Well Water? If a customer is not on city water and have a well, chances are they do not need a thermal expansion tank. It would not do any harm to have one but it most likely isn’t necessary. A well has a well tank that acts as an expansion tank.
Does an expansion tank affect water pressure?
The expansion tank contains air, which is highly compressible. Expanding water from the water heater can flow into the expansion tank, where the air compresses, making room for the increased volume of water. Water pressure in the system doesn’t increase significantly.
How does an expansion tank work on a well?
Boiler System Expansion Tanks A heavy duty diaphragm flexes against an air cushion to maintain a safe operating pressure. This eliminates relief valve discharge and creates a quiet, longer lasting system. Maximum working pressure: 100 psi.
Is a pressurized well tank the same as an expansion tank?
The most significant difference between expansion and pressure tanks is their functionality. An expansion tank handles water expansion and provides protection for water valves and heaters. On the other side, the pressure tank lengthens the lifespan of the pump.
What’s the difference between a pressure tank and expansion tank?
Is an expansion tank really necessary for a hot water heater?
From a building code perspective, expansion tanks are not required for tankless water heaters where no storage tank for hot water is installed. In most cases, they are used as a preventative measure to prolong the life of your water heater and reduce the risk of ‘overworking’ your plumbing system.
What does an expansion tank do on a water heater?
The expansion tank is designed to handle the thermal expansion of water as it heats up in the water heater, preventing excessive water pressure. If water pressure gets to high it can damage valves in plumbing fixtures, joints in supply pipes and the water heater itself.
How to install an expansion tank on a water heater?
Disconnect the Water and Power Supply. Turn off the water supply to your water heater.
Do I need an expansion tank on my water heater?
If you do not have a one way valve installed on the main water line, and therefore do not have a closed water system, you may still benefit from a water heater expansion tank. Expansion tanks are normally installed above the water heater on the cold side before the water comes into the water heater.
