Tag: Condensing Boilers

Cast Iron Condensing Boilers… Yes, It Is Possible

Acidic condensation does corrode cast iron.  There’s no questioning the chemistry involved.  But, does this mean that cast iron cannot be used in condensing boilers?  I think most of us will strongly agree that it is a bad idea.  Well-known hydronics expert, John Siegenthaler, wrote an interesting article for Plumbing & Mechanical last year that challenges…




Do You Neutralize? I Hope So… It’s Code.

With condensing technology pervading mechanical rooms, a new product must be installed – a neutralization kit.  Condensing boilers and water heaters utilize water vapor in the flue gas to add BTUs to the heat exchange.  This water vapor is acidic and needs to be properly disposed of.  As a rule of Thumb, 1 gallon of water…




How A Condensing Boiler Works

Gas-fired condensing boilers are often associated with energy efficiency and rightfully so.  At a minimum, they all have a 90% thermal efficiency rating.  There is a higher upfront cost, but it comes along with the promise of saving energy dollars. To achieve these savings, you cannot just install this device in the mechanical room and walk…