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Seal Seams in Air Handler Cabinets

Publication Date

July, 2015

Video describing how to seal air handler cabinet seams.

Sealed and Insulated Metal Ducts

Guide describing how to air seal and insulate metal ducts.

Sealed and Insulated Fiber Board Ducts

Guide describing how to air seal and insulate fiber board ducts.

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.

Sealed and Insulated Flex Ducts

Guide describing how to air seal and insulate flex ducts.

Air Sealing the Air Handler Closet

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

HVAC Ducts Shall Not Be Run within Exterior Walls

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

Evaporative Cooling - Code Compliance Brief

This brief discusses the provisions in the 2015 International Energy Conservation Code (IECC) and International Residential Code (IRC) related to evaporative cooling.

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.

Sufficient Cavity Space for Flex Ducts

This measure guide describes how to correctly install ducts, ensuring enough cavity space to avoid compression.

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 Kinks or Sharp Bends in Flex Duct Installation

Guide outlining how to correctly install flex ducts without kinks or sharp bends.

Support at Intervals for Flex Ducts

Guide describing how to hang ducts with supporting straps or saddles to adequately support ducts so they do not sag and are not pinched or compressed in a manner that would cause damage to the ducts, the duct insulation, or the duct air barrier covering.

Ductless Mini-Split Heat Pumps - Code Compliance Brief

The intent of this brief is to provide code-related information about ductless mini-split heat pumps to help ensure that the measure will be accepted as being in compliance with the code.

Rooms Containing Fuel-Burning Appliances - Code Compliance Brief

An entirely new section in the 2015 IECC/IRC regarding fuel-burning appliances basically requires the appliance to be isolated from the building thermal envelope, located either outside or within a separate room if the fuel-burning appliance is supplied by open combustion air ducts. This brief provides an overview of the requirements and further details of approving the actual "room".

Transfer Grilles

Guide describing how to install transfer grilles 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.