Is An Expansion Tank Required For A Tankless Water Heater

This may also expand the risks of the plumbing configuration.

Is an expansion tank required for a tankless water heater. If you are suffering from any type of thermal expansion in your home then the best option is to get the help of a water heater expansion tank. Pans shall be installed under storage type water heaters or water storage tanks installed in attics or above ceilings. Signs that you need a water heater expansion tank. In a closed plumbing system a standard tank water heater can stress your plumbing pipes and fixtures through the normal thermal expansion that happens when water is heated.

3 and 607 3 1 do not specifically distinguish between thermal expansion from a storage water heater a tankless water heater or other system equipment. This can be a problem in any closed system where water is heated. What type of water heater do you have. Pans are not required under tankless water heaters.

Plumbing difficulties may happen at any time and any date. Both water heaters and boilers for home heating systems can be prone to this kind of damage unless measures are taken to prevent it. Expansion tanks aka thermal expansion tanks are essentially safety devices to help you minimize the risk of damage to your hot water tank they are an add on to your existing hot water heater and are often installed on the water supply pipe to the water heater normally this is on the wall next to or very close by your hot water tank. Effective january 1 2014.

However while many tank style water heaters have thermal expansion tanks you may be wondering to yourself is an expansion tank required with a tankless water heater. The requirements contained in paragraphs 607. Expansion tanks are required if your system fails a water pressure psi test. However if you have a traditional tank style water heater you will most definitely need to consider if an.

The pan shall be galvanized steel having a minimum thickness of 24 gauge or other pans approved for such use. The risk of pressure damage along with your tankless water heater is very common. You do need a releif valve so that if the heating does not stop and the water expands it can expand. These restrictions are meant to reduce the risk of co poisoning.

If you have a tankless water heater you don t have to worry about an expansion tank because you don t have a primary tank to begin with. The water expands as it heats and on a tank you are raising the temp of water trapped in the tank because the water continues to heat after the tap is closed but on a tankless the heating stops as the tap is closed or its suppoesd too so you do not need an expansion tank on a tankless. Location in the case of gas or propane heaters the location for your heater may be restricted. Section 607 3 of the 2012 international plumbing code ipc provides the requirements for controlling pressure from thermal expansion.