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What Does HVAC Stand For?

HVAC (pronounced h-vack or spelled out) stands for Heating, Ventilating and Air Conditioning. The three functions of heating, ventilating, and air-conditioning are closely interrelated. All seek to provide thermal comfort, acceptable indoor air quality, and reasonable installation, operation, and maintenance costs. HVAC systems can provide ventilation, reduce air infiltration, and maintain pressure relationships between spaces. Your heating and air technician goes by the name of HVAC contractor and can provide heating repair expertise.

How Does My Heating and Air Conditioning System Move Air Throughout My Home?

A fan draws indoor air in through vents called return grills located throughout your home. The air travels through ducts that run to your systems’ air handler, where it is returned into the conditioned space through supply vents or registers in your wall, ceilings or floors.

How Often Should I Replace The Filter?
There’s no one-size-fits-all answer. The frequency of filter changes is driven by how much your heating and air conditioning system operates, which is also driven by your individual climate.

Start by checking the system’s filters at least once a month. Hold the used filter up to the light and compare it to a clean “spare.” When light is obscured by captured dust and dirt particles, the old filter should be changed. Keep a record for one year and then replace the filter on that basis. At a minimum, it is always a good idea to change filters at the start of the heating and cooling seasons and then in between according to your need. Also, it is a good idea to have your heating and air system checked at the beginning of the heating and cooling season to ensure proper operation.

What is a SEER And EER?
Since January 2006, all residential air conditioners sold in the United States must have at least a 13 SEER. SEER is the abbreviation for Seasonal Energy Efficiency Ratio, and it is a U.S. government standard energy rating and reflects the overall system efficiency of your cooling system. An EER is short for Energy Efficiency Ratio and doesn’t take into consideration the time of year, but rather the system’s energy efficiency at the peak operating use. Both ratings should be considered in choosing cooling products. The rating is a ratio of the cooling output divided by the power consumption and measures the cooling performance of the system. The Federal government developed an ENERGY STAR program for high-efficiency central air conditioning systems and in order to qualify these systems must have a SEER of at least 14.
We Are Replacing Our AC Unit This Season, What Advice Can You Give Me?
Replacing your system is one of the most significant financial decisions you will make. The reason for this is that the life expectancy of a system is around ten years. When choosing a contractor, pick a company to install the unit based on quality and customer service, not solely on price. Another thing to keep in mind when replacing a system is that the duct system you are connecting to is sealed tight with the proper amount of return air. With the new higher efficiency units, you also need to consider replacing your system with an appropriately sized unit, so you don’t end up with a house that is cool but has high humidity. Do some homework, pick quality contractors, and find someone you trust and you will have a successful installation that will bring you years of comfort and the least amount of overall cost.
What is Meant by a "Ton" of Refrigeration?
Confusingly, the unit has little to do with weight, as used in everyday language. One ton of refrigeration is the term used to refer to 12,000 B.T.U.s/hour (British Thermal Units/Hour) of cooling effect. Thus, a condensing unit with a cooling capacity of 60,000 B.T.U.s/hour is said to have a capacity of 5 tons.
Why Can't You Add Coolant to My System Without Checking For a Leak or Repairing an Existing Leak?
Since July 1st, 1992, it is illegal to release refrigerants into the atmosphere, either intentional or accidental because they can cause severe damage to the ozone layer. When refrigerants such as chlorofluorocarbons (CFCs) are removed, they should be recycled to clean out any contaminants and returned to a usable condition.
How Does The Clean Air Act Impact Heating and Cooling Systems?
The portion of the Clean Air Act that applies to the Heating, Ventilating and Air Conditioning (HVAC) industry encourages the development of ozone-friendly substitutes for chemicals that contain ozone-destroying chlorine, which are called hydrochlorofluorocarbons (HCFCs). The chemical refrigerant of choice for more than four decades, referred to as R-22, is in the HCFC category. R-22 is widely used in heat pumps and AC condensing units to heat and cool homes. Today, a refrigerant called R-410A is used because of its ozone-friendly properties.

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