BASC Search | Building America Solution Center

Dryer vents directly to the outdoors

Image

Dryer vents directly to the outdoors

Image

Direct vent appliance installed

Image

A direct-vent sealed-combustion fireplace takes its combustion air directly from outside through a dedicated air inlet and vents combustion products directly outside

Image

Gas-fired condensing boiler is installed as a direct vent appliance

Image

Clothes dryers vented directly to outdoors, except for ventless dryers equipped with a condensate drain

Image

A direct-vent sealed-combustion furnace has dedicated pipes for combustion air and exhaust

Image

Dryer exhaust duct should vent directly to the exterior via a smooth, rigid metal duct

Image

Furnaces, boilers, and water heaters located within the home’s pressure boundary are mechanically drafted or direct-vented

Image

Category III oil-fired, sealed-combustion boiler configured as a direct-vented appliance that draws its combustion air from outside

Image

Because flue temperatures are cool, intake and exhaust ducts on a Category 4 direct-vent sealed-combustion condensing furnace can be made of PVC

Image

Wrong – Two combustion appliances are sharing a flue which could lead to backdrafting if one appliance is updated to a direct vent appliance and disconnected from shared chimney.

Image

For fireplaces that are not mechanically drafted or direct-vented to outdoors, total net rated exhaust flow of the two largest exhaust fans is .15 CFM per 100 sq. ft. of occupiable space when at full capacity

Image

Proper Clothes Dryer Venting

Guide

Guide describing how to correctly vent a clothes dryer to direct exhaust air out of the home.

Fireplaces and Wood Stoves Have Proper Ventilation

Guide

Guide describing how to provide combustion air for fireplaces and how to test fireplaces for combustion safety.

Ventless (Condensing) Clothes Dryers

Guide

Guide describing condensing clothes dryers, which have a secondary heat exchanger and do not require exterior venting.

Home Performance Assessment

Information Guide

Information guide describing how to apply a whole-house approach to home improvement with energy efficiency upgrades, improved indoor air quality, and increased comfort.

Unvented Combustion Appliances

Guide

Guide describing concerns with un-vented combustion appliances such as sealed fireplaces.

Generators for Back-Up Power During Outages

Information Guide

Information guide describing options and considerations for installing a generator for backup power in case of temporary power outages.