Direct Vent Equipment Description Guide describing categories of direct-vent combustion space- and water-heating equipment and combustion safety testing.
ECM Air Handler Fans Description Information guide describing the use of ECM fan motors in air handlers used for heating, cooling, and ventilation.
Fireplaces/Stoves with Proper Ventilation Description Guide describing how to provide combustion air for fireplaces and how to test fireplaces for combustion safety.
Whole House Ventilation Strategies for Existing Homes Description Guide describing how to select and install whole-house ventilation systems for existing homes.