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HVAC Terminology: A Guide for Homeowners


If you’re in the market for a new HVAC system, you’re likely to come across a lot of technical jargon that can be confusing. Understanding HVAC terminology is important because it can help you make informed decisions. It will make you feel more comfortable when it comes to purchasing, maintaining, and repairing your AC system.

Some common words on HVAC terminology that you should be familiar with:

  • SEER Rating: SEER stands for Seasonal Energy Efficiency Ratio. This rating measures the efficiency of an air conditioner or heat pump over a cooling season. The higher the SEER rating, the more energy-efficient the system is.
  • AFUE: AFUE stands for Annual Fuel Utilization Efficiency. This rating measures the efficiency of a furnace or boiler over a heating season. The higher the AFUE rating, the more energy-efficient the system is.
  • BTUs: BTUs stands for British Thermal Units. Professionals use this measurement to determine the heating or cooling capacity of an HVAC system. The higher the number of BTUs, the more powerful the system is.
  • Thermostat: The thermostat is the device that controls the temperature of your home. It can be set to a specific temperature, and it will turn the HVAC system on and off to maintain that temperature.
  • Air Handler: The air handler is the part of the HVAC system that circulates air through the ducts. It typically contains a blower, a filter, and the components that heat or cool the air.
  • Refrigerant: Refrigerant is the substance that absorbs and releases heat in an HVAC system. It is responsible for cooling the air in an air conditioner or heat pump.
  • Ductwork: Ductwork is the system of pipes or channels that distribute air throughout your home. It is typically made of metal, fiberglass, or flexible material.
  • Heat Exchanger: The heat exchanger is the part of a furnace that transfers heat from the combustion chamber to the air that circulates through your home. It is an essential component of a gas or oil furnace.

Master your HVAC Terminology 

By understanding these HVAC terms, you’ll be better equipped to communicate with HVAC professionals and make informed decisions about your heating and cooling system. For example, knowing the SEER rating of an air conditioner or heat pump can help you compare different models and choose one that will save you money on your energy bills in the long run. Moreover, HVAC terminology can help you troubleshoot problems with your AC system. For instance, if your furnace has a low AFUE rating, it may be less efficient and costing you more money on your energy bills. Or if your air conditioner is low on refrigerant, it may not be cooling your home effectively.

If you’re ever unsure about HVAC terminology or need assistance with your HVAC system, don’t hesitate to contact a professional HVAC technician. They can help explain any terms you’re unfamiliar with and provide guidance on how to maintain or repair your system.

Communicate Better With our Professionals

At Ivannova Air Conditioning we give you the best guidance on professional hvac terminology. We provide customized and reliable solutions to customers. In addition, our company delivers high quality work at incredibly prices. We always put our customers first. Call us today at (305) 713-6033 or schedule online.


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