Skip to main content

Guides A-Z

Showing results 1 - 4 of 4

Description
Guide describing categories of direct-vent combustion space- and water-heating equipment and combustion safety testing.
Description
Guide describing how to install ventilation air inlets in open locations at a safe distance from potential air contamination sources.
Description
Guide describing the types of whole-house fans, installation details to reduce energy loss, and how to operate them for comfort and energy savings based on climate zone.