we recently had our oil boiler serviced by our fuel-oil company. they left us a note saying that the “hartford loop” is too high, which apparently can result in radiator banging, boiler flooding, and water leaking from air valves. (this is our first winter in the house using this boiler.)
over the last few weeks, our pipes/radiators do indeed make banging sounds; there are frequent and very loud hisses from the valves; and one radiator sometimes leaks/sprays water from its valve.
i’d appreciate recommendations for a plumber who can do a full audit of our system and fix these issues relatively quickly. it should be someone who can deal with oil boilers (a couple of the mainstays on this site i called only service gas boilers). thanks in advance for any advice you can provide!