Common HVAC Terms

At RES Air Conditioning, we believe constant training and certification gives us an edge in the HVAC industry. Our heating and air conditioning Henderson, TX technicians are knowledgeable and certified in residential and commercial air conditioning installation, service and repair. We remain current in today’s high efficiency energy-saving HVAC technology, best practices, and products. We also know that informed clients are better able to make better-quality decisions.

  • Air Conditioner – A device that conditions the air from warm to cold through a process using mechanical or chemical energy. This includes the conditioning of air for refrigeration purposes as well as for comfort purposes.
  • Air Handlers – This is the main unit of a heating or cooling system that contains the blowing, heating, or cooling elements that cool or warm the air. This unit is then connected to ducts and the ventilation system that carries the conditioned air throughout the building.
  • Dual-Fuel Systems – A common form of heating unit that uses both a gas — or oil heating system — for the extreme cold weather, and a more efficient heat pump that can be electrical or otherwise in milder months. The benefit of these flexible fuel units is the controllability of the efficiency.
  • Electric Air-Cleaners – A device that filters and purifies air through mechanical energy powered by electricity. The goal of the use of this device is to remove allergens and contaminates from the indoor air, making the indoor air quality much safer and healthier.
  • Electric Unit Heaters – An electrical appliance that converts electrical energy into heat through the use of a heating element. Working on the principle of Joule Heating, the element takes an electrical current and forces it through resistors, converting the electrical energy in to heat energy.
  • Gas Furnace – A home or business heating unit that burns gas fuel for conversion into heat energy that is subsequently ventilated throughout a specified building, home or business.
  • Gas Unit Heater – A heating unit that is often self-contained, such as a space heater, that contains all of the mechanics of the unit but not necessarily any vent system or ductwork hooked up to the unit.
  • Heat Pump – An HVAC unit component, this unit is responsible for the delivery of warm air from where it is created in the unit to the ductwork or ventilation system or tract.
  • Media Air Cleaners – Any type of air cleaning and purifying device that cleans the air by passing the intake air through a dense mesh, filter, or screen.
  • Programmable Thermostats – An air conditioning or heating unit control box that has settings that can be programmed to run at certain times, can actively monitor the indoor temperature, and can be programmed for heating and cooling efficiency.
  • Rooftop Units
    • RTU Heat Pump – See Definition Below
    • RTU Gas/Electric – See Definition Below
    • RTU Electric/Electric – See Definition Below
      • Rooftop Units are heating or air conditioning units that are placed on the top of a roof rather than on the side of the house, in a window or in a utility closet or basement. These are the same as units found in other locations, only they are raised up onto the roof. These types of units still may contain a heat pump, run on gas/electric dual fuel systems, or electric/electric systems.
  • Split Systems – These are heating or cooling systems that heat single or multiple rooms by circulating refrigerant to a small coil and fan unit, but is not connected to any ductwork for circulation throughout a specific area.
  • Two-Staged Cooling Units – a cooling or air conditioning unit that uses a compressor and has two levels of operation.
  • UV Lights – Ultraviolet light is a powerful waveform of light that can be used to kill organisms and biological dangers within a heating or cooling system to increase the air quality of the air circulating.
  •  Variable Speed Blowers – An HVAC component that allows running capacities at various levels for increased efficiency. These units can cut running costs by up to 1/3 per year.
  • Variable Speed Compressors – An HVAC air compressor component that takes advantage of variable-speed drive technology for a more efficient running. These types of units are not only more efficient than fixed-speed units, but they also save money on energy bills.
  • Ventilation – The movement of air (that has been conditioned to be warmer or cooler) throughout a specified area through ductwork or radiance.
  • Wi-Fi Thermostats – An air conditioning or heating system control panel that allows the changing of settings or the programming of settings from remote locations via electronic devices.
  • Zoning – The planning of the movement of cool or heated air through a ventilation system in the perfect way to heat or cool more important zones or areas in a succession from most to least important. This is done for both comfort and efficiency.