What Is The Small Tank On Top Of My Water Heater

The water heater doing this is not normal and should be a cause for concern and will range in severity depending on how much water is leaking out.

What is the small tank on top of my water heater. A common question and concern that most homeowners have been when they notice their water heater is leaking water from the top part of the tank. My new water heater w exp tank has resulted in water hammer not previously experienced with our original 15 yr old tank. Both water heaters and boilers for home heating systems can be prone to this kind of damage unless measures are taken to prevent it. Many water heater tanks have their temperature and pressure relieve valve positioned on the side of the tank.

This small tankless water heater is a mini type tankless water heater the flow rate of it 2 5 gallons per minute. Only bathroom up and down seem affected. Suits the need of two sinks at the same time or one shower and one sink simultaneously in hot weather or southern area. 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.

Not all water heaters have an expansion tank but if yours does it s function is similar to that of the t p relief valve. This may seem like an easy question but it is also one that many people do not actively think about. This can be a problem in any closed system where water is heated. An expansion tank is a small tank that is typically located on or above the top of the water heater.

Common residential expansion tank looks like a small propane 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. Call back to installer found no errors. At the top it has an air valve like the one seen on most tires called schrader.

I have since noticed if i reduce or turn off water supply to tank the hammer reduces and stops entirely. At the bottom there is a threaded pipe connection. Usually they are the same size as basketball depending more or less on the size of the water heater they serve. This secondary safety device is designed to absorb excess hot water.

Why is my water heater is leaking from top. What type of water heater do you have. How does the expansion tank of. I have a leak from this blue small tank on top of my hot water heater but i dont know what the blue tank is or what it does.

It is a gas heater about 3 years old. The area is rusty and has started dripping. However some models have these valves located on the very top of the machine. If your hot water heater is designed like this then this could be a reason your water heater is leaking at the top.