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  1. Boilers, Hot Water & Steam Heating
    Hi, The past two years, early in the heating season, I am getting a loud buzzing noise from my boiler, which seems like it is coming from the electronically controlled natural gas valve. The unit is a Slant Fin 90,000 BTU hot water boiler. From what I have found online, the buzzing could be...
  2. General Plumbing Discussion
    I’m in the process of going for a grade a boiler engineer exam. I was wondering if anyone on here would have any advice on what to focus on or tips on these types of tests. The exam is open book as well.
  3. Boilers, Hot Water & Steam Heating
    Hey all, I'm up here in metrowest Mass. with a customer interested in the Rinnai combi. I recently saw it at a local trade show. Its another of the combi type with a flat-plate heat exchanger stuffed in the bottom corner. Nice unit, but kind of pricey.. Comes with low loss factory header...
  4. Boilers, Hot Water & Steam Heating
    I work for a company with an inventory of around 50 AO Smith Cyclone boiler both the XHE and Xi models ranging from 199,000 to 400,000 btu. Over the last 2 years we have had approximatley 25 failures - the failures are in the heat tube - the heat tube is failing (leaking). I am just wondering...
1-4 of 4 Results