Guides A-Z

Guide describing the installation of boiler controls in multifamily housing.

Guide describing refrigerant-based compression-cooling air conditioning systems for space cooling.

Guide describing air-sealing of the seams and holes in HVAC air handler and furnace cabinets.

Guide describing the repair and reconfiguration of the air handler closet and platform when replacing the air handler.

Guide describing how to install back-draft dampers in exhaust fans to make a shared duct possible.

Guide describing how to install a bathroom exhaust fan to remove excess moisture.

Guide describing the bathroom exhaust fan ENERGY STAR rating requirements.

Guide describing the use of building cavities as supply or return ducts.

Guide describing combustion furnaces with selection and installation guidance.

Guide describing correct ducting for exhaust fans.

Guide describing design and installation of compact duct systems for central heating and cooling systems.

Guide describing condensing boilers and hot water heat distribution systems used for home heating.

Guide describing how to install a corrosion-resistant drain pan in condensate-producing HVAC equipment.

Guide describing how to select low-sone supply and exhaust fans for quiet, continuous operation.

Guide describing how to install continuously operating exhaust fans.

Guide describing categories of direct-vent combustion space- and water-heating equipment and combustion safety testing.

Guide describing how to conduct duct leakage tests on all components of the HVAC system (including the air handler, ductwork, register boxes/boots, and all air devices such as diffusers, registers, or grilles).

Guide describing how to install ducted returns in bedroom walls to balance air pressures between rooms and to enable stale air to return to a central heating system's air handler for reconditioning even when room doors are closed.

Guide describing approaches to burying and encapsulating ducts in unconditioned attics to increase the overall R-value of duct insulation.

Guide describing method for installing ducts in a duct chase above a dropped ceiling.

Guide for designing and installing interior ducts in an interstitial floor cavity in new and existing homes.

Guide describing method for designing and installing ducts in a raised ceiling chase.

Guide describing the use of electronically commutated motors (ECMs) in HVAC central air handler fans to reduce power consumption compared to a single-stage fan motor.