About
Two electrical engineers saw the need for a way to conveniently burn anthracite coal, which was plentiful, but heating with coal had a bad reputation of being dirty and requires maintenance several times a day. Our engineers developed an automatic stoker unit equipped with a coal hopper that held enough fuel for several days. This allowed the coal to be cleanly burned and without frequent maintenance. They then saw the need to make a hot water boiler specifically designed to burn coal and built them in multiple sizes to meet our customers' needs.
As prices of energy continued to escalate, Keystoker continued its research. Over 60 years of research has developed a patented feed in system, a patented flat grate, and a patented thermal heat exchange, which has produced the highest efficiency possible.
