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Marc, Plumber
Category: Plumbing
Satisfied Customers: 1126
Experience:  Plumbing heating & home maintenance contractor
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We have a Rinnai Tankless gas water heater. Water heater was

Customer Question

We have a Rinnai Tankless gas water heater. Water heater was working great then we turned off cold water input. I turned back on the next day. Everything is firing and looks fine but water is now lukewarm at output. We turned heater up to 140 and still not hot enough for shower. We used to have it set at 125.
Submitted: 1 year ago.
Category: Plumbing
Expert:  Rick replied 1 year ago.

Welcome to Just Answer, my name is ***** ***** I will do my best to help you with your issue. If my initial response doesn’t answer your question then let me know and we can continue our conversation.

The first thing to try is t clean out the filter screen on the cold ware inlet to the tankless