Venting Gas, Wood & Pellet Stoves

Gas Stoves

Gas hearth products are vented in three ways: natural draft (vented through the roof), direct-vent, and vent-free. Below are the options for gas hearth appliances.

Natural Draft (Class B) Venting

Natural draft hearth appliances take in combustion air from inside the home and vent products of combustion outside the home.

Direct Vent

Direct-vent appliances draw combustion air from the outdoors and exhaust its combustion products to the outdoors, eliminating the need for a standard chimney system. A glass panel in direct-vent units is critical to keeping the combustion system sealed from the home, maintaining high efficiency and indoor air quality. Direct-vent piping can go out the wall directly in back of the unit or go upward from the top of the appliance then though the wall or roof. Various models differ. Check with your retailer.
Currently, the majority of gas fireplace sales are direct vent units.

Unvented or Vent-Free

Unvented and vent-free refers to the kind of hearth appliance that draws its combustion air from inside the home and is designed to burn so efficiently that it eliminates the need for venting.
Caution should be used in choosing a vent free stove or fireplace. Moisture content and other products of combustion can cause adverse effects to wall and ceiling finishes. Persons with respiratory problems or allergies should avoid vent free appliances.

Wood Stoves

Wood burning stoves are primarily vented through the ceiling with high tech insulated chimney piping or through an existing masonry chimney. Wood stoves connected to masonry chimneys require an approved chimney liner. Chimneys that do not contain a liner in serviceable condition and be re-lined with stainless steel or poured refractory liners. Exterior masonry chimneys should have an insulated chimney liner to reduce risk of excessive creosote build up.

Pellet Stoves

Pellet stoves are power vented and can be installed almost anywhere in the home, including through a ceiling, through a wall, or into an existing masonry chimney as long as the installation includes at least 3 feet of vertical chimney. Pellet stove chimneys are unique and are usually 3 or 4 inches in diameter. Masonry chimneys require clay or stainless steel liners.

Venting Components

We stock high grade venting components for direct vent and natural vent gas stoves and fireplaces as well as pellet stove vent pipe.

For wood burning chimneys and connectors we feel strongly about providing high grade components that can safely handle the higher temperatures and stress of wood heat.

We are confident providing class A insulated stainless steel chimney systems and stainless steel chimney liners and Maine made Elmers heavy gauge welded seam stove pipe for a safe, long lasting wood stove connection. We also carry double or triple wall direct cooled stove pipe for situations requiring close clearance to combustibles.