The Ultra with PhD (precision hydronic data) Technology® is a condensing high-efficiency gas boiler available in five sizes. With ratings ranging from 80 to 310 MBtuh, the boilers have 20-100 percent ...
BURR RIDGE, Ill. — Hydronic comfort heating solutions manufacturer Weil-McLain ® has added four larger sizes to its advanced, energy efficient Stainless Vertical Firetube (SVF) boiler portfolio to ...
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