IF you look only at boiler shipment statistics from the Gas Appliance Manufacturers Association, it looks as if the hydronics market is in for a rough ride. Shipments for residential gas cast iron boilers will finish down about 8% in 2005. That, however, tells only part of the story. GAMA doesn't have a good method yet to measure ship- ments of high-efficiency, low-mass condensing boilers, explained Dave Dolan, vice president/marketing for Weil-McLain. Today, high-efficiency products are 20% of sales, he said, with traditional cast iron comprising the other 80%. He predicts high-efficiency boilers will have 40% of sales in five years.
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