HVAC -

Pressure Balancing

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 install jump ducts in bedroom walls to balance air pressures between rooms, enabling constant air flow for conditioning and freshness even when room doors are closed.

Guide describing mechanical ventilation tools and methods required for accurate airflow measurement.

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

Guide describing design of a mechanical ventilation design to enable accurate measurement of ventilation system airflow.

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.

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