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Guides A-Z

Showing results 1 - 50 of 62

Air Conditioning

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

Attic Ventilation Fans

Guide describing the use of attic ventilation fans to mechanically pull outside air through the attic in an attempt to cool the attic, control moisture, and prevent ice dams.

Bathroom Exhaust Fans

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

Bathroom Fan Ratings

Guide describing the bathroom exhaust fan ENERGY STAR rating requirements.

Combustion Furnaces

Guide describing combustion furnaces with selection and installation guidance.

Compact Air Distribution

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

Condensing Boilers

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

Direct Vent Equipment

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

Duct Leakage to Outdoors

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).

Ducted Returns

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.

ECM Air Handler Fans

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.

Encapsulated Ducts

Guide that illustrates how and when to encapsulate ductwork in unconditioned attics, increases the R-value of duct insulation, mitigating condensation issues and reducing air leakage.

Evaporative Cooling Systems

This guide describes evaporative cooling technologies which can be used to cool homes in dry climates.

Gas-Fired Boilers

Guide describing gas-fired boilers and hot water heat distribution systems used for home heating.

High-MERV Filters

Guide describing the uses, selection process, and specification of high-MERV filters.

Jump Ducts

Guide describing how to install jump ducts in bedroom walls to balance air pressures between rooms, enabling constant air flow for conditioning and freshness even when room doors are closed.

No Ducts or Air Handlers Located in Garage

Guide describing how to design HVAC systems to be located within the conditioned space of the home, either in a utility closet or in an air sealed conditioned attic, basement, or crawl space.

Outdoor Air Intake Damper Controlled

No outdoor air intakes connected to return side of the HVAC system, unless controls are installed to operate intermittently & automatically based on a timer and to restrict intake when not in use (e.g., motorized damper)

Removing Construction Debris from Ducts

Guide describing removal of construction debris from flex ducts and protection of ducts and HVAC equipment during construction to keep them free of dust and debris.