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Existing HVAC System Upgrade or Expansion

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

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

Information guide describing considerations for before retrofitting HVAC systems, retrofit scope considerations, and HVAC system replacement options.

Guide describing combustion furnaces with selection and installation guidance.

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