HVAC -

Heating Equipment

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

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 how to upgrade or expand an existing HVAC system.

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