The Weil-McLain Ultra is an Energy Star rated condensing gas boiler with an AFUE between 92 and 93.3% for regular conditions, and 98% for conditions related to low temperatures. It is a two-stage induced draft boiler that has what Weil-Mclain call “integrated PhD (Precision Hydronic Data) Technology”, a system that “initiates efficient and ongoing hydronic heating”. The design of the Weil McLain Ultra gas boiler is CSA certified.
Weil-McLain has recalled Ultra Series 80,105,155 and 230 boilers manufactured after June 1, 2012 and prior to March 11, 2014. A cap on the boiler manifold can crack and release gas into the home, presenting a risk of fire or explosion. Consumers may contact Weil-McLain at 888-770-7139 for more information.
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