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Central Air Conditioning

How Does Air Conditioning Work?

The air conditioner in a central heating and cooling system provides cool air through ductwork inside your home, by providing a process that draws out the warm air inside, removing its heat.

A central air conditioner has a primary appliance such as an air handler or furnace located in a basement or attic. The air handler or furnace pumps chilled air throughout the house through a system of air ducts, which is often the same system utilized by a forced hot air furnace during the heating season. Thermostats in the home regulate temperatures by turning the cooling system off and on as room temperatures rise and fall.

HVAC Air conditioning units

Air Conditioning Installation

The design and installation of your air conditioning system are vital to achieving reliable and efficient indoor cooling. Even the finest equipment will break down prematurely if sized and installed the wrong way. Our equipment consultants have over 50 years of combined experience in the industry and will provide you with the best quality products at a competitive price. The quality of our equipment is just as important as the quality of our work.

It is very important to be sure that the unit is properly sized for your home. Some people always think that bigger is better, but an air conditioner that is too big will turn on and off more, won’t humidify as well, and is noisier than a unit that meets your needs. It will also use more energy and increase your utility bill. A unit that is too small will run consistently and work too hard, which can cause unnecessary wear on parts and the system may not keep your home cool enough.

If you are replacing an older air conditioning system, it is important to evaluate whether the existing ductwork needs to be resized, replaced, or insulated. New systems are more efficient and may require new ductwork in order to work properly. Make sure to consult with a professional to find out what you may need to make your new air conditioning system run most efficiently. Our team provides a FREE in-home consultation and price quotes. Schedule an appointment now.

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17 Point Check – Air Conditioning Tune-Up

  1. Evaluate & start unit; verify the unit is operational before tune-up takes place.
  2. Wash outdoor unit; helps protect against weather and helps extend the life of a unit.
  3. Routine cleaning of condenser coil; refrigerant pressures increase electrical costs if condenser coil becomes dirty.
  4. Check contractors and relays; worn contractors and loose connections can lead to motor and compressor failure.
  5. Remove debris around outside unit; this will prevent damage to the equipment and helps prolong efficiency.
  6. Examine insulation of refrigerant lines; this protects lines from water damage.
  7. Inspect electrical connections; this ensures safety and helps to extend the life of a system.
  8. Check unit disconnect switch; ensures safety, worn or overheated disconnect will blow fuses.
  9. Measure pressures with a gauge; improper refrigerant charge can cause compressor shut down.

  1. Check condensate drain; if a condensate drain becomes clogged, this could cause expensive water damage.
  2. Check, clean or replace return air filter; the restricted filter can shorten compressor life and reduces efficiency.
  3. Clean evaporator coil; a dirty coil will decrease efficiency and may lead to compressor failure.
  4. Check condensate pan and fitting for leaks; water damage can occur if the pan is cracked or loose fittings are found.
  5. Check temperature split across coil; temperature difference indicates production and capacity of a unit – this can affect comfort level.
  6. Check blower wheel; dirty blowers reduce air flow that will increase operating costs and can lead to compressor failure.
  7. Check blower motor stability; if dirty, could cause a decrease in efficiency and may cause it to fail.
  8. Check blower motor amp draw; this protects equipment and ensures optimum performance.

Central Air Q&A – Click on a question listed below to view the answer

How do I know it is time to replace my cooling system?

Below are a few indications that you may want to look into upgrading your cooling system.

  • If your unit if over 10 years old, you may want to consider replacing it with a high-efficiency unit that can save up to 20% on heating and cooling costs.
  • If your equipment needs frequent repairs and you notice an increase in your energy bills.
  • If you notice rooms in your home are too hot or too cold.
  • If you notice your unit is noisy.

What is a SEER?

A SEER is the Seasonal Energy Efficiency Rating that measures the efficiency of an air conditioning system by how much cooling it delivers per watt of electricity. The minimum SEER for a central air conditioner is 13, and 14 in most of the hotter states. Look for a high SEER rating, as well as the Energy Star label when looking to replace any of your equipment. Energy Star is a government-backed symbol for energy efficiency.

What is a BTU?

A BTU is the British Thermal Units that is used in the sizing of a central air conditioning unit, measured per hour, or in tons. One ton of cooling equals 12,000 BTU.

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