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Guide describing combustion furnaces with selection and installation guidance.

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

Guide describing how to air seal and insulate flex ducts.

Guide describing how to create a designated shelter-from-heat space in a home to help occupants successfully weather an extreme heat event.

Guide describing ductless heat pump systems used for single-room or whole-house heating and cooling.

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.

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

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