Why does my new tankless water heater go cold?

Another problem that tankless water heaters can run into is that of a cold water sandwich—a plumbing term given to sudden temperature fluctuations, when your tankless water heater produces hot and cold water intermittently. This can be caused by: A dirty water filter on the cold water inlet.

What to do if your Rinnai Water Heater has no hot water?

You could try thawing the pipes with a hair dryer on high as long as the area where the pipes were exposed to freezing temps is now above freezing JACUSTOMER-0spvukfq- : Called Rinnai Tankless customer service and they think it is the exterior pipes that lead to and from the rinnai unit.

Is there an error code on my Rinnai tankless?

No code. Tried flushing the unit but that didn’t help. Unit makes a loud rumble (very loud) when it kicks on. This was the only issue for maybe a week or so. Today it started kicking on/off while calling for hot water.

When was the Rinnai tankless hot water installed?

It was installed in my house back in 2009. It has been working flawlessly up until about 2 weeks ago. Then all of a sudden while trying to run hot water in either of the showers or in the kitchen sink, the hot water would start cycling between cold and hot. This cycling happens randomly and for various amounts of time.

Can a mini tank water heater be used with a tankless heater?

If you get that “hot water, cold water, hot water” surprise, consult a professional to see if you should combine your tankless unit with a “mini” tank water heater. The small tank water heater provides you with hot water while your tankless unit’s heat exchanger warms up.

Why is my tankless water heater not heating?

Lack of adequate venting will cause water leakage, and it is a well-known culprit for tankless water heaters. If venting is not working correctly, it may occur condensation inside the water heater which leads to leakage problems. If condensation is continuing, it might fall the entire system.

What are some common problems with a Rheem water heater?

Rheem Water Heaters – Common Issues No Hot Water. A tripped circuit breaker will shut down an electric heater and gas models that use electricity. Not Enough Hot Water. If the water heater is new, or if you’ve just moved into a new home and aren’t familiar with the water heater’s capability, it’s likely that There’s Water on the Floor.

Can a bad water heater cause low water pressure?

Poor Pressure. Hard-water buildup in the pipes can block water flow into and out of the hot water heater, resulting in low pressure. Sediment in the hot water tank has the same effect. A kinked flexible water line — especially the accordion-style copper pipes commonly used with hot water heaters — can also reduce flow.

Is a tankless water heater right for your family?

There are many benefits to installing a tankless water heater in a single-family rental home. Tankless heaters are ideal for small homes because they mount on a wall and take up a lot less room than a storage-tank water heater. Tankless heaters are also energy-efficient since they only heat water when it is needed.