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Guides A-Z

This guide describes IECC 2009 and 2012 and ENERGY STAR Certified Homes insulation requirements.

This guide describes IECC 2015 and DOE Zero Energy Ready Home insulation requirements.

This measure guide describes the need to install a dedicated dual-pole circuit breaker for a future solar photovoltaic installation.

This guide provides information about installing Insulating sheathing above the roof deck on existing homes. This retrofit assembly is appropriate for homes with conditioned attics or where the retrofit is intended to create a conditioned attic.

Guide describing how to frame and insulate corners to reduce the heat loss and gain though structural framing.

Guide describing how to insulate headers over doors and windows to reduce heat loss and heat gain through solid wood framing.

Guide describing how to frame and insulate exterior-to-interior wall intersections to reduce the heat loss and gain though structural framing.

Guide describing how to minimize framing around doors and windows to reduce heat loss.

Guide describing how to frame a wall with minimal wall studs to prevent heat loss through walls.

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

Guide describing how to properly test the air barrier between the garage and house, and how to ensure the air barrier is tight enough to prevent garage air from entering the home.

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

Guide describing how to correctly air seal a wall with missing top plates or open wall cavities. 

Guide describing how to insulate a basement to improve the overall thermal performance of the building and provide more dry, usable conditioned space for home occupants and for HVAC equipment.

Guide describing ways to air seal an attached garage in new and existing homes.

Guide describing how to air seal attic access panels, doors, and stairs to provide a continuous air barrier at the ceiling.

Guide describing how to air seal bathroom and kitchen exhaust fans.

Guide describing how to air seal doors that are next to unconditioned spaces.

Guide describing ways to seal drywall to the top plate of an exterior wall to air seal the wall cavity.

Guide describing how to air seal duct and flue shafts. 

Guide describing how to air seal electrical wiring throughout a home.

Guide describing how to air seal around light tubes.

Guide describing how to air seal modular home marriage joints.

Guide describing how to air seal the gap between the drywall shaft wall (i.e., common wall) and the structural framing between units in multifamily housing.

Guide describing how to air seal around plumbing and other piping.

Guide describing how to air seal around recessed light fixtures. 

Guide describing how to air seal sill plates in new and existing homes.

Guide describing how to correctly seal structural insulatel panel (SIP) seams.

Guide describing how to air seal a whole-house fan system.

Guide describing how to air seal the rough openings around doors and windows.

This measure guide describes basic steps for designing and installing an indirect (anti-freeze) solar hot water system.

Guide describing a method for insulating an unvented attic by spraying foam insulation along the underside of the roof deck.

This measure guide describes the need to provide an architectural drawing for a future solar photovoltaic installation.

This measure guide describes the need to provide an architectural drawing for a future solar hot water installation. 

Guide providing information about constructing a roof with full insulation at the eaves, and insulating eaves in existing homes.

This guides describes how to insulate and air seal attic knee walls and floor joist cavities under knee walls.

Guide describing application of a radiant barrier layer in the attic to block radiant heat transfer between hot surfaces and heat-absorbing surfaces.

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

Guide describing how to install WaterSense® labeled bathroom and kitchen sink faucets and accessories.

Guide describing how to install a bathroom fan to remove excess moisture, cleaning chemical fumes, etc.

Guide describing the bathroom exhaust fan ENERGY STAR rating requirements.

Guide describing how to achieve RESNET Grade 1 installation standards, and meet/exceed code using batt insulation in existing walls. 

Guide describing how to increase insulation in existing homes by installing batt insulation on the ceiling plane of a vented attic.

Guide describing how to add spray foam insulation to the underside of the existing roof deck.

Guide describing blown insulation into exterior wall cavities of existing homes with minimal disruption to occupants.

Guide describing how to insulate a vented attic in an existing home using blown insulation added to the attic floor.

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

Guide describing how to avoid using wet materials and reduce moisture exposure in construction.

Information guide providing background information about air flow in residential buildings.

Information guide providing background information about heat flow in residential buildings.

Information guide providing background information about moisture flow in residential buildings.

Information guide describing how to calculate ventilation area in existing roofs.

Guide describing how to air seal and insulate a cantilevered floor.

Guide describing how to install a capillary break to help manage moisture in foundations.

Guide describing how to create a capillary break at all crawlspace floors using polyethylene sheeting to manage moisture in crawlspaces.

Guide describing how to install a capillary break under a slab foundation using either polyethylene sheeting or rigid insulation installed over aggregate or over sand and geotextile matting.

Guide describing appropriate flooring for wet areas of the home.

This measure guide describes basic steps for installing ceiling fans.

Guide describing how to air seal and insulate a ceiling.

Guide describing how to install moisture-resistant materials on walls behind showers and tubs to help manage moisture.

Guide describing Indoor airPLUS construction specifications for carpets.

Guide describing Indoor airPLUS construction specifications for low-VOC pressed wood materials.

Guide describing Indoor airPLUS construction specifications for low/no VOC paints and finishes.

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 install efficient clothes washers in new and existing homes.

Guide describing how to conduct combustion appliance zone testing.

Guide describing combustion furnaces with compliance and installation guidance.

Guide describing how to choose and install a carbon monoxide alarm.

Guide describing correct ducting for exhaust fans.

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

Guide describing a complete window replacement in existing homes.

Guide describing compression cooling air conditioning systems for space cooling.

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

Guide describing condensing clothes dryers, which have a secondary heat exchanger and do not require exterior venting.

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

Guide describing options for designing/locating the thermal boundary in new and existing homes.

Guide describing how to install continuous air barriers in exterior walls.

This guide describes installation procedures for continuous rigid insulation to help provide thermal protection, reduce thermal bridging and provide a moisture barrier. 

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

Guide describing how to install continuously operating exhaust fans.

This measure guide describes effective ways to distribute hot water using core plumbing techniques.

Guide describing how to install screening to keep birds, rodents, and other pests out of vent openings in new and existing homes.

Guide describing how to apply water management strategies to below grade walls.

This measure guide describes effective ways to distribute hot water using demand plumbing techniques. 

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

Guide describing how to install dishwashers in new and existing homes.

Guide describing how to install ENERGY STAR rated dishwasher and clothes washers. 

This guide describes air barrier and insulation installation, along with air sealing for double walls - half or full walls included in a home design as an architectural feature that provides a more dimensional appearance.

Guide describing construction and insulation techniques for double wall framing.

This measure guide describes basic steps for designing a drainback solar hot water system.

Guide describing installation of sump pumps in the basement or crawlspace of a home.

Guide describing installation of a fully sealed continuous weather resistant barrier to help drain water away from above-grade walls.

Guide describing EPA WaterSense requirements for drinking water treatment systems.

Guide describing how to insulate and air seal dropped ceilings and soffits to prevent air leakage.

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.

This guides describes buried ducts in loose-fill attic insulation, a method that can only be used in dry climates.

This guide describes approaches to buryng 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. 

Information guide describing the use of ECM fan motors in air handlers used for heating, cooling, and ventilation.

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.

Guide describing how to use a blower door test to determine building envelope air leakage.

This guide provides criteria and installation guidance for ENERGY STAR windows.

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

Guide describing how to upgrade or expand an existing HVAC system.

Guide describing how to repair or replace skylights in existing homes. 

Guide describing how to install slab edge insulation when retrofitting existing slab-on-grade foundations.

Guide describing how to insulate a new foundation wall or an existing foundation wall by adding rigid insulation to the exterior side.

Guide describing how to properly grade a site so water will not saturate the soil, and penetrate into the foundation.

Guide describing how to provide combustion air for fireplaces and how to test fireplaces for combustion safety.

Guide describing how to apply flashing to the bottom of exterior walls to create a continuous drainage plane.

Guide describing how to create an air barrier between the garage and the conditioned space above it to prohibit pollutants from entering a home's interior.

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

Guide describing how to help drain water away from the perimeter footing.

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 sizing and installation of foundation heat exchangers, which can be connected to a heat pump system used for spacing conditioning as well as domestic water heating.

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 describing how to install insulated concrete forms to block excessive heat loss and gain though structural framing.

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.

This measure guide describes basic steps for designing an integrated collector storage (ICS) or thermosyphon hot water system.

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.

Information guide describing WaterSense requirements for outdoor ornamental water features.

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.

Guide describing how to evaluate existing ventilations systems before performing home upgrades.

Information guide describing how to perform a thorough visual evaluation of walls, windows and doors before proceeding with renovation projects.

Information guide describing how to balance pressure in supply and return ducts. 

Guide describing how to correctly vent a clothes dryer.

This guide describes proper installation of high-MERV furnace and air-handler filters.

Guide describing how to install a radon mitigation fan with various types of house foundations.

Guide describing ways to reduce access to bugs, rodents and other pests through openings in a home.

Guide describing how to install energy efficient refrigerators in new and exisitng homes.

Guide describing how to install removable interior storm windows in existing homes.

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.

Guide describing principles of insulating band joists as a stand alone energy upgrade, or as part of creating a closed crawlspace.

Guide describing how to insulate closed crawlspace walls and band joist areas with rigid foam board insulation.

Guide describing how to apply an air control layer directly over existing wall sheathing, and cover by two layers of insulating sheathing held in place by vertical furring strips.

Guide describing how to upgrade walls that separate the garage from the house by providing a continuous air control layer on the garage side of the wall and adding rigid foam insulation.

Guide describing how to insulate an existing slab floor by adding rigid foam insulation over the slab then installing a floating subfloor.

A guide for choosing and installing roof anchoring systems for solar panels.

Guide describing how to apply heavy membranes at valley/roof deck penetrations in wet climates to help drain water away below the roofing.

Guide describing how to apply heavy membranes at eaves in cold climates to help guard against ice dams.

Guide outlining how to retrofit an exterior wall and/or attic to provide continuous air sealing.

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

Guide describing how to air seal and insulate flex ducts.

Guide describing how to air seal and insulate metal ducts.

Guide describing how to air seal around duct shafts and flues installed through ceilings, walls and flooring in new and existing homes.

Guide describing service water pressure requirements for EPA's WaterSense Program.

Guide describing how to install WaterSense® labeled showerheads.

Guide describing insulation techniques for skylight shaft walls.

Guide describing how to insulate slabs on grade in climate zones 4 and higher.

Install Tier 1, master-slave, load-sensing advanced power strips in entertainment centers and computer stations.

Guide describing how to reduce exposure to environmental tobacco smoke in multi-family buildings.

This measure guide describes basic steps for designing a thermosiphon solar hot water system. 

This guide describes procedures for assessing feasibility of solar resources, and designating location of propolsed PV arrays and solar thermal panels.

This measure guide describes the need to install a plumbing and wiring chase for a future solar hot water installation.

This information guide describes the need to install a solar bypass valve on the existing hot water tank for a future solar hot water system installation.

Guide describing how to install spray foam on the exterior of the existing home after framing over the existing siding.

Guide describing how to apply spray foam insulation to ceilings in existing homes.

Guide describing how to insulate the walls of an existing home with spray foam insulation.

Guide describing how to insulate an existing foundation wall by adding spray foam insulation to the interior side of the wall.

Guide describing sprinkler irrigation landscape watering practices for water efficiency.

Guide describing how to create a fully aligned air barrier behind a staircase.

Guide describing best practice venting strategies for existing steam heating systems in multifamily buildings.

Guide describing how to install step and kick-out flashing on roofs.

This measure guides describes how to install structural insulated panels to block excessive heat loss and gain though structural framing. 

Guide describing how to install stucco over rigid foam insulaiton in new and existing homes.

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

Guide describing the need for covers on sump pumps in the basement or crawlspace of a home.

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.

Guide describing techniques for installing insulating sheathing as a continuous drainage plane on walls.

Guide describing the use and testing of programmable thermostats.

Guide describign how to analyze boiler and building performanceand install thermostatic radiator valves (TRV) to reduce temperatures in over heated spaces.

Guide describing toilet and urinal requirements and selection for EPA's WaterSense program.

Guide describing how to conduct duct leakage tests per RESNET protocols.

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

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.

Guide describing how to undercut the doors  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 methods for insulating an unvented attic along the roof line.

Guide describing how to properly ventilate un-vented combustion appliances such as sealed fireplaces.

Guide describing methods for insulating an unvented crawlspace or conditioned basement with rigid foam on the interior side of the walls to provide an insulated space for HVAC equipment.

This measure guide describes the need to leave space for a solar hot water tank in the home’s utility room.

Guide describing replacement of a single-speed pool pump with variable-speed pump.

This information guide describes the need for ventilating a home before occupancy to reduce the concentration of VOC emissions in the home.

Guide describing how to install ventilation air inlets in open locations at a safe distance from potential air contamination sources.

Guide describing how to install a radon-mitigating vertical ventilation pipe in existing homes with various types of house foundations.

Guide describing the design and installation considerations for recladding of above grade walls using insulated vinyl siding.

This guide describes how to install a rigid air barrier to separate the porch attic from the conditioned space. 

This guide describes how to install a rigid air barrier to walls behind fireplaces.

This guide describes how to install a rigid air barrier to walls behind showers and tubs.

Guide with details about how to provide a continuous water control layer across the roof assembly by sealing all roof penetrations in existing homes.

Guide describing how to insulate the sill beam or sill plate on the exterior side in a way that allows drying to the exterior, as part of an exterior wall upgrade.

Guide with information about how to install flashing integrated with air and water control layers around piping, vents, and other wall penetrations as part of an exterior wall retrofit.

Guide describing an approach to re-roofing an existing flat roof to improve thermal, water, and air control performance.

Guide describing how to re-roof an existing home with a sloped roof.

Guide describing how to install and properly integrate flashing at the intersection of an existing wall and an existing intersecting roof

Guide describing how to retrofit an existing basement floor or slab to reduce moisture issues.

Guide providing information about treating bulk water drainage issues and moisture control measures in existing basements and crawl spaces.

Guide describing ways to save water use in residential swimming pools and spas.

Guide describing how to determine an efficient and effective water softener. 

Guide describing how to design a water-efficient landscape that will minimize the need for supplemental water by using the WaterSense® Water Budget Tool.

Guide describing how to select and install whole-house ventilation systems for existing homes.

This guide describes how to install a whole-building ventilation system to provide adequate dilution of indoor air contaminants. 

Guide describing additional requirements for HVAC systems in warm-humid climates to operate in a dehumidification mode to maintain indoor relative humidity at or below 60 percent.

Guide describing wind washing and how to prevent it.

Guide describing how to rehab a window in an existing home.

Guide describing how to replace a window sash in an existing home.

Guide describing how to modify an existing window sash for high-efficient windows. 

This guide describes the need for installing a wiring conduit for future solar photovoltaic installations.