Q&A Term/Definitions
Define AFUE? Annual Fuel Utilization Efficiency. AFUE is a rating that reflects how efficiently a gas furnace converts fuel to energy.
Define BTU? British Thermal Unit. In scientific terms, it represents the amount of energy required to raise one pound of water one degree Fahrenheit.
Define capacity? The output or producing capability of a piece of cooling or heating equipment. Cooling and heating capacity are normally referred to in BTUs.
What is CFM? Cubic Feet per Minute, a standard of airflow measurement. A typical air conditioning system produces 400 CFM per ton of air conditioning.
What is a condenser coil? Located in the outdoor unit, the coil dissipates heat from the refrigerant, changing the refrigerant from vapor to liquid. In American Standard units, the coil is called Spine Fin
Define cycling? Refers to the process of an HVAC system turning on and off. Some systems require less cycling than others, leading to higher energy efficiency and less wear on the system
What is duct work? Refers to the process of an HVAC system turning on and off. Some systems require less cycling than others, leading to higher energy efficiency and less wear on the system
What is a furnace? An indoor heating unit that works in conjunction with an air conditioner or heat pump
What is a heat pump? An outdoor unit that warms your home in winter and cools your home in summer.
Define HSPF? Heating Seasonal Performance Factor. Refers to the efficiency of the heating mode of heat pumps over an entire heating season: The higher the number, the more efficient the unit.
What is a indoor coil? The other, less visible half of your outdoor unit. It's attached to your furnace or air handler. As indoor air flows across it, heat and moisture are drawn out, leaving air that is cool, comfortable and conditioned.
Define load calculation? A detailed analysis of your home's energy needs conducted by your dealer to help determine which comfort system is best for your home.
What is humidity? The amount of moisture in the air. Variable speed systems can reduce this moisture for added comfort
What is refrigerant? A substance that produces a cooling effect. It's used in most air conditioning and cooling systems.
What is SEER? Seasonal Energy Efficiency Ratio. This is a rating that measures the cooling efficiency of a heat pump or air conditioner. The higher the number, the more efficient the unit.


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