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HVAC


Solution Center Guides


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

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

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

Guide describing how to air seal duct and flue shafts. 

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

Guide describing the bathroom exhaust fan ENERGY STAR rating requirements.

This case study presents a cold-climate project that examines an alternative approach to ground source heat pump (GSHP) ground loop design. The innovative ground loop design is an attempt to reduce the installed cost of the ground loop heat exchange portion of the system by containing the entire ground loop within the excavated location beneath the basement slab.

IBACOS investigated the performance of a small-diameter high-velocity heat pump system compared to a conventional system in a new construction triplex townhouse. A ductless heat pump system also was installed for comparison, but the homebuyer backed out because of aesthetic concerns about that system. In total, two buildings, having identical solar orientation and comprised of six townhomes, were monitored for comfort and energy performance.

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

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

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

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

This measure guide describes basic steps for installing ceiling fans.

Guide describing how to conduct combustion appliance zone testing.

Guide describing combustion furnaces with compliance 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 compression cooling air conditioning systems for space cooling.

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

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.

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.

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

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

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.

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 installation procedures for combined space and water heating systems.

Guide describing how to choose ENERGY STAR fans.

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

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.

Guide describing how to install obvious ventilation controls.

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

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.

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

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

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

Guide describing how to correctly locate duct terminals to meet the ENERGY STAR Certified Homes program.

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

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

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

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 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.