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How many vent-free products are in use today?

April 26, 2017products today vent-free

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How many vent-free products are in use today?

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More than 17 million U.S. households use vent-free gas supplemental heating appliances. Vent-free products are fueled by natural gas or propane and their precision-engineered burners provide highly efficient, environmentally clean-burning heat.