Welcome! Here are the website rules, as well as some tips for using this forum.
Hi. I have an oil fired boiler, with the coil inside. I am not getting hot water at my sinks or showers. It's actually mildly warmer than the cold water. It has a watts 70a mixing valve. The pipe from the boiler is hot where it connects to the valve. The mix side is not. If I shut off the water to the cold connection, I get nothing at the sink. The boiler does fire up. Also the forced hot water heat does work. Does this sound like a bad mixing valve? The water in my town is terrible and known to ruin things.