It runs off natural gas or liquid propane ... Suitable for in-wall installation, the Empire deluxe direct-vent fireplace insert has clean, modern lines and a broad opening to put out enough ...

or a more modern look, like the customizable B46 Ascent model from Napoleon. A direct-vent gas fireplace uses a single exterior opening to expel combustion gas and draw clean air in. Unlike ...

Do gas fireplaces increase indoor air pollution? Modern fireplaces with sealed combustion systems minimize indoor air pollution by venting all combustion byproducts outside. Harmful emissions and ...