HVAC maintenance

The indoor unit of a split HVAC system that houses the blower fan, evaporator coil, and air filter components

The electric motor that powers the fan to circulate conditioned air throughout the ductwork and living spaces

The standard measurement of heating and cooling capacity representing the energy needed to change one pound of water by one degree Fahrenheit

An electrical component that stores and releases energy to help start and run HVAC motors efficiently

A safety device that monitors and alerts occupants to dangerous levels of carbon monoxide from combustion appliances

The pipe or tube that removes water produced when warm air passes over cold evaporator coils during cooling

The outdoor component of air conditioning systems containing the compressor, condenser coil, and fan

Adjustable plates in ductwork that control and direct airflow to different areas of a building

The system of metal or flexible tubes that distributes heated or cooled air throughout a building

A rating that measures cooling efficiency by comparing BTU output to electrical watts consumed

The indoor coil where refrigerant absorbs heat from indoor air during the cooling process

A metering device that controls refrigerant flow into the evaporator coil and reduces pressure for cooling

Minimum Efficiency Reporting Value that indicates an air filter’s ability to capture particles of different sizes

The metal chamber where combustion heat transfers to air without mixing exhaust gases with indoor air

An HVAC system that can both heat and cool by reversing the refrigeration cycle seasonally

High-Efficiency Particulate Air filter that removes 99.97% of particles 0.3 microns or larger from air

A control device that monitors and maintains desired indoor humidity levels automatically

The measure of air purity inside buildings including pollutants, humidity, and ventilation adequacy

The process of determining the correct HVAC system size based on building specifications and climate

The air distribution box attached to the furnace or air handler where supply and return ducts connect

A digital thermostat that automatically adjusts temperature settings based on programmed schedules

The measure of insulation’s resistance to heat flow with higher values indicating better insulation performance

The precise amount of refrigerant required for optimal HVAC system operation and efficiency

The grille where air from rooms enters the ductwork to return to the HVAC system for reconditioning

The component in heat pumps that changes refrigerant flow direction to switch between heating and cooling modes

Seasonal Energy Efficiency Ratio measuring air conditioner efficiency over an entire cooling season

When HVAC systems turn on and off frequently due to oversizing, thermostat issues, or mechanical problems

The resistance to airflow in ductwork that affects system efficiency and comfort levels

The vent covers where conditioned air enters rooms from the HVAC ductwork system

Device sensing the temperature and sending signal basd on set limits.

A precise metering device that adjusts refrigerant flow based on cooling load requirements

HVAC capacity measurement where one ton equals 12,000 BTUs of cooling per hour

HVAC equipment with high and low operating speeds for improved efficiency and comfort control

Ultraviolet lights installed in HVAC systems to kill mold, bacteria, and other microorganisms

A motor that adjusts speed based on heating or cooling demand for better efficiency and comfort

The amount of fresh outdoor air introduced into a building measured in cubic feet per minute

HVAC configuration allowing different areas to be heated or cooled independently with separate thermostats