Recent content by davida

Thanks for your response. It's a Rheem RTGH-84DVLN. I don't have an expansion tank. I'm not sure what the water pressure is, but we're on the city water supply.

I installed a rheem gas condensing tankless water heater yesterday, and it seems to be providing hot water just fine. My problem is that for about a second when you first open a cold water tap in the tub (or when the clothes washer begins to cold water, or a toilet begins to refill, but not...