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Guides A-Z

Guide describing how to air seal and insulate the floor above an unconditioned basement or crawl space.

Guide describing how to install flashings to help direct water down and out at all the openings in a wall system.

Guide describing the air sealing of rim joists on walls connecting homes and attached garages.

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

Guide describing how to install a tankless hot water heater in a new or existing home to provide domestic hot water that is heated on demand without the standby losses associated with tank storage water heaters

Guide providing information about geothermal (ground-source) heat pumps including an overview of technology and guidance on compliance and installation.

Guide describing the installation of gutters, downspouts, and alternate options for managing rainwater run-off from roof.

This guide provides information about heat pump water heaters.

Guide describing lighting choices and installation procedures in new and existing homes.

This guide describes the uses, selection process, and specification of high-MERV filters.

Guide describing how to conduct a home performance assessment before beginning retrofit projects in existing homes.

Guide describing how to thoroughly seal HVAC ducts to ensure air delivery without leakage, and to ensure economical and quiet performance of the HVAC system.

Guide describing how to insert a replacement window in an existing home.

Guide illustrating how to insulate a floor over unconditioned space with conditioned space above by adding insulation and air sealing.

Guide describing air sealing of non-ICAT recessed lights installed in accessible attics of existing homes.

Guide describing how to upgrade a wall with a floor overhang (or cantilever) on an existing home by adding rigid insulating sheating and or closed-cell spray foam insulation and air sealing.

Guide with information about how to upgrade a garage ceiling when a portion of the interior of the house is located directly above the attached garage by adding insulation and air sealing.

Guide describing how to install insulation below attic platforms

Guide describing how to upgrade a crawlspace floor in an existing home by adding insulation.

This guide describes RESNET Grade 1 level installation of insulation in walls, attics, and floors.

Guide describing installation procedures for combined space and water heating systems.

Guide describing how to choose ENERGY STAR fans.

This measure guide describes the need to install a mounting surface for equipment related to a future solar photovoltaic installation.

Guide describing how to install jump ducts 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 how to install efficient kitchen exhaust systems.

Guide describing how to install and test all water-using fixtures, equipment, and appliances to ensure there are no leaks.

Guide describing how to install low-e exterior storm windows.

Guide describing how to install low-e permanent interior storm windows.

Guide describing how to install an exhaust fan in an attached garage to pull fumes out of the garage and to depressurize the garage with reference to the home.

Guide describing the use of micro-irrigation systems to reduce water usage in residential landscaping.

Guide describing the split system heat pumps used for central forced air heating and cooling.

This measure guide describes the need to install a mounting surface for equipment related to a future solar hot water installation.

Guide describing how to properly apply mulch to landscaping. 

Guide describing water metering in multi-family buildings. 

Guide providing information about installing boiler controls in multifamily housing.

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.

Guide outlining how to correctly install flex ducts without excessive coils or loops.

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

Vapor retarders can be a crucial part of the building envelope and can help manage moisture issues to keep the home dry. However, before installing a vapor retarder, installers must be aware that in some instances vapor retarders can increase the likelihood of condensation issues.

Guide describing how to correctly choose building materials.

Guide describing how to install obvious ventilation controls.

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

Guide describing how to correctly slope surfaces outside a home to force water to flow away from the edge of the home.

Guide describing insulation of piping in exterior walls.

Guide describing why planting ground covers on steep slopes without irrigation prevents erosion. 

Information guide describing how to assess attics, ceilings and roofs before proceeding with upgrades in existing homes.

Retrofit guide describing how to assess harmful gasses such as carbon monoxide, sulfur oxides, nitrogen oxides, and soot from existing combustion appliances.

Information guide describing how to assess crawlspaces and basements before proceeding with upgrades in existing homes.

This guide can help you assess an existing Heating, Ventilation and Air Conditioning (HVAC) system for potential intervention such as repair, upgrade or expansion, or replacement.


Information guide describing pre-retrofit actions to take to assess for asbestos, volatile organic comounds (VOCs) soil gasses including radon and lead.

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