Tankless Water Heater Expansion Tank

Expanding hot water needs to have somewhere to go.

Tankless water heater expansion tank.

You do need a releif valve so that if the heating does not stop and the water expands it can expand through the releif valve letting you know that the unit is malfunctioning. The reason being is that a tankless water heater only produces hot water as requested. Since water expands when it is heated due to thermal expansion the water heater creates extra water volume every time it heats water. 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.

This may also expand the risks of the plumbing configuration. The risk of pressure damage along with your tankless water heater is very common. 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. What does an expansion tank do.

Proper venting gas and propane heaters emit carbon monoxide which must be vented outside. When the hot water supply is opened the tankless unit starts to produce hot water. Expansion tanks are required if your system fails a water pressure psi test. For the hybrid series data is based on the tankless water heater unit attached to the storage tank.

You don t need a water heater expansion tank if you have a tankless water heater since there is no tank and no buildup of pressure. But the tankless heater isn t on unless the water is flowing so no issue there. These restrictions are meant to reduce the risk of co poisoning. If certified a product can save energy save money and protect the environment by generating fewer greenhouse gas emissions than a less efficient product.

Your guide to energy efficient products. Plumbing difficulties may happen at any time and any date. The water heater expansion tank serves as an overflow receptacle by absorbing excess water volume that occurs when water is heated as well as absorbing fluctuations in the incoming water supply pressure. Most tankless water heaters electric or gas do not need a thermal expansion tank.

However if you have a traditional tank style water heater you will most definitely need to consider if an expansion tank is needed. Introducing the zep1 the stainless steel expansion tank for tankless water heaters. On a tank type heater it will be working in a static environment and needs to escape either in an expansion tank or back up the cold water service or blowing out your plumbing.