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.

Is an expansion tank required for a tankless water heater.

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. This may seem like an easy question but it is also one that many people do not actively think about. You do need a releif valve so that if the heating does not stop and the water expands it can expand. Pans are not required under tankless water heaters.

Expansion tanks are required if your system fails a water pressure psi test. Effective january 1 2014. The pan shall be galvanized steel having a minimum thickness of 24 gauge or other pans approved for such use. Signs that you need a water heater expansion tank.

This may also expand the risks of the plumbing configuration. Section 607 3 of the 2012 international plumbing code ipc provides the requirements for controlling pressure from thermal expansion. This can be a problem in any closed system where water is heated. These restrictions are meant to reduce the risk of co poisoning.

Tankless water heaters are growing in popularity for a wide variety of reasons including on demand hot water and their space saving design. 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. Plumbing difficulties may happen at any time and any date. 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.

The risk of pressure damage along with your tankless water heater is very common. The requirements contained in paragraphs 607. However if you have a traditional tank style water heater you will most definitely need to consider if an. 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.

Location in the case of gas or propane heaters the location for your heater may be restricted. Both water heaters and boilers for home heating systems can be prone to this kind of damage unless measures are taken to prevent it. What type of water heater do you have. 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.