turns out I have a clogged chimney. The spill switch trigged and I took a match and confirmed I have a clogged chimney. So I'm off to buy some brushes and rods...but while at it, my boiler is 50+ years old.
I don't use the boiler that MUCH these days as we have installed splitless HVAC throughout the house and we now have *zoned* heating.
Attached is a pic of my 50-60 year dinosaur.
Should I just wait till it totally conks out or is it due time.
Not sure about efficiency, etc....