Heating and Cooling Terms and Definitions

Heating, Ventilating, and Air Conditioning (HVAC): Regulation of temperatures, through heating and cooling, inside of residential and commercial building.
HVAC: Acronym that refers to the climate control system, which governs heating, ventilation and air conditioning.
Needle Valve: A valve, used in HVAC systems, with a stem that tapers to a point.
Velometer: A device used to measure the velocity of air in an HVAC system.
Mass Coefficient: HVAC thermal calculation correction factor that adjusts for actual conditions.
Radial Ducting: An HVAC system with ductwork running outward from a central heating and/or cooling unit.
Recool: The sensible cooling of air that has been previously heated by HVAC systems serving the same building.
Ductwork: Network of ducts that has been installed, usually as part of an HVAC system. Ductwork is typically constructed from sheet metal.

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Home Heating Systems
It usually isn’t until we receive our energy bill that we remember how our home is heated. Heat is often taken for granted because for the most part our heating systems are controlled by a simple turn of the thermostat and magically we have heat! In recent times, homeowners are becoming more conscious of how much heat is used because energy costs are taking a bigger bite out of our household budgets.

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Common A/C Problems
Most air conditioning problems are a result of flawed installation, poor service, and insufficient maintenance. However, there are several ways to check for and resolve problems associated with your central air conditioning. Common problems include the compressor failing to turn on, the air not coming out cool enough, low airflow, and water leaks.

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Energy Efficient Air Conditioning
In order to get the most out of your air conditioning system, it is important to understand the different designs, components, and operating principles. Paying close attention to the proper sizing, selection, installation, maintenance, and correct use are keys to lowing your overall costs.

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