Dispelling Common Air Conditioning Myths


When it comes to air conditioning systems, there are numerous myths and misconceptions that can lead to improper maintenance, inefficient operation, and even costly repairs. In this blog post, we’ll debunk some of the most prevalent myths surrounding AC service, repair, and installation.

Myth #1: Bigger is Always Better

One common myth is that a larger air conditioning unit is always better for cooling a space. However, this is not always the case. An oversized unit can lead to inefficient cooling, increased energy consumption, and frequent cycling on and off, which can shorten the lifespan of the unit. A properly sized unit, recommended by a professional HVAC technician, will provide efficient cooling while reducing energy costs.

Myth #2: Closing Vents Saves Energy

Many homeowners believe that closing vents in unoccupied rooms will save energy. Unfortunately, this is a myth. Closing vents can disrupt the airflow balance in your system, causing it to work harder and potentially leading to premature failure. It’s best to keep all vents open and adjust the thermostat to your desired temperature.

Myth #3: Air Conditioning is Responsible for Causing Colds

This myth stems from the belief that being exposed to cold air can lead to catching a cold or flu. However, colds and flu are caused by viruses, not temperature changes. While sudden temperature fluctuations can make some individuals more susceptible to illness, air conditioning itself does not cause colds.

Myth #4: Air Filters Only Need Changing Once a Year

  • Neglecting to change air filters regularly can lead to poor indoor air quality, reduced efficiency, and potential system damage.
  • The frequency of filter changes depends on various factors, such as the type of filter, the number of occupants, and the presence of pets.
  • As a general rule, it’s recommended to change air filters every 3 to 6 months for optimal performance and efficiency.


Separating fact from fiction is crucial when it comes to air conditioning maintenance and service. By debunking these common myths, homeowners can make informed decisions and ensure the longevity and efficiency of their AC systems. Remember, consulting with a professional HVAC technician from All Climate Heating & Air Conditioning is the best way to address any concerns or questions you may have about your air conditioning needs.