The installation phase is where the furnace equipment is selected and integrated into the existing space heating system and ductwork. The Gas Safety Regulation (administered by the BC Safety Authority and seven municipalities) and the furnace manufacturers instructions will generally provide basic guidance on the furnace installation sequence and health and safety considerations. TECA and HRAI provide additional materials on the selection and installation of new furnace equipment (See Additional Resources section).

While there are several measures that have an impact on the performance of a new furnace installation, the following items are critical to ensuring the new equipment achieves the full energy-savings, comfort, and durability that the homeowner is expecting from the new furnace. The following is a summary of important considerations with locations indicated on the accompanying high-boy furnace graphic. Note that similar considerations are applicable to down-flow and horizontal furnaces; however, ducting and piping may be located at different locations due to differing configurations.