About John Wood Water Heaters
John Wood Water Heaters
GSW Water Heating is a global leader in residential and commercial water heaters. What began in Canada, over a century and a half ago as a tinware and farm implements company, has evolved today into a leading designer and manufacturer of electric, gas, propane and oil-fired water heating systems. GSW brand names like John Wood, Flame Guard® and SuperFlue® are internationally recognized by customers for their quality, efficiency and reliability
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