Boiler Water Gauge Glass

My gauge used to be 1/2 to 2/3 full. Last night, I noticed its completely full. Should I be worried? I regularly purge the water through the bottom knob so the water is clear not cloudy. It’s just full ! Let me know if you think this is a problem or maybe it’s just due to the fact that the boiler is getting extra work these days !

By brownie77 |