HVAC -

Ventilation

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

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 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.

Guide describing the uses, selection process, and specification of high-MERV filters.

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