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What is a "ventless" gas heating product?

Oct 13, 2017 0-minute read
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“Ventless”, or vent free gas heaters, fireplaces, fireplace inserts, stoves and log sets are heating appliances designed to be installed and operated without a chimney, flue, or vent. Vent free products can be used with either natural gas or propane, and are intended to provide supplemental heat to a home. Because there is no vent, flue or chimney required, all the heat generated by the product goes directly into the home. That's why vent free products are 99.9 percent energy efficient.