air in which there are no known contaminants at harmful concentrations

air changes per hour

granular, processed carbon that is used in air filters to trap contaminants in the air.

liquid or solid particles suspended in air

Annual Fuel Utilization Efficiency. AFUE is used to measure the percentage of energy that is converted into heat inside your home or building. For example, if a gas furnace is rated AFUE 95 it means t [..]

the process of adjusting your HVAC system to deliver the proper airflow to each room.

the air handler is the term for the blower fan and heat transfer coil, as well as the housing of those components. It is used to move heated or cooled air from the HVAC system into your ducts.

the distribution and movement of air throughout the house.

an attic fan is a fan mounted on your attic wall that exhausts warm attic air to the outside.

your attic vent is a mechanical device used to ventilate an attic space, primarily to reduce heat buildup and moisture condensation.