Gas fireplaces, including inserts, can be direct-vent or ventless. Direct-vent systems are usually more expensive and less energy-efficient since heat escapes up the chimney. Unvented or vent-free ...

High-end Prestige Series vent-free gas logs, Models PS24 ... and the look of aged split logs to recreate the appearance of real wood, says the company. Temco Fireplace Products, Inc., 301 S. Perimeter ...