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The Cool Science Behind Modern Air Conditioning Systems

Dec 27, 2023

If you live in Orlando, you’re no stranger to the sweltering heat and humidity. That’s where modern air conditioning systems come to the rescue! These systems have evolved significantly over the years to provide comfort, energy efficiency, and climate control in our homes. In this blog, we’ll explore the various components of a modern air conditioning system tailored for a typical Orlando home, ensuring you stay cool and comfortable year-round.

The Heart of the System – The Condenser Unit

The condenser unit is the outdoor component of your air conditioning system, and it plays a crucial role in the cooling process. Located outside your home, it contains the compressor, condenser coil, and a fan. Here’s how it works:

  • Compressor: This is often called the “heart” of the system. It pumps refrigerant throughout the system to absorb and release heat, making your home cooler.
  • Condenser Coil: This coil dissipates heat absorbed from the indoor air, allowing the refrigerant to return to a liquid state.
  • Fan: The fan helps to expel the heat generated during the cooling process and circulates air over the condenser coil.

Common issues with the condenser unit:

  • Refrigerant leaks
  • Fan motor failure
  • Dirty or clogged condenser coil
  • Electrical problems

The Indoor Unit – The Evaporator Coil and Air Handler

The indoor unit of your air conditioning system is responsible for distributing cool air throughout your home. This part includes:

  • Evaporator Coil: This coil, usually located within the air handler, is responsible for absorbing heat from the indoor air. It contains refrigerant that evaporates as it absorbs heat, turning it into a cold gas.
  • Air Handler: The air handler houses the evaporator coil and a blower fan. It circulates the conditioned air through your home’s ductwork, keeping your rooms comfortable.

Common issues with the indoor unit:

  • Frozen evaporator coil
  • Blocked or dirty air filters
  • Fan motor problems
  • Thermostat issues
AC unit sittng outside of home


Ductwork is the network of pipes or channels that transport cooled air from the air handler to different rooms in your home. Properly insulated and sealed ducts are essential for efficient cooling and temperature control. In Orlando’s hot and humid climate, ensuring your ducts are in good condition can help save energy and maintain consistent comfort.

Common issues with ductwork:

  • Leaky ducts
  • Poor insulation
  • Obstructions or blockages
  • Duct damage


The thermostat serves as the control center for your air conditioning system. Modern thermostats are often programmable or smart, allowing you to set precise temperature schedules and monitor energy usage remotely. Smart thermostats, in particular, can optimize your cooling system’s performance by learning your preferences and adjusting settings accordingly.

Common issues with thermostats:

  • Inaccurate temperature readings
  • Programming errors
  • Wiring problems
  • Battery issues (for non-wired thermostats)

Air Filters

Clean indoor air is crucial for a healthy home environment. Air conditioning systems include air filters that capture dust, pollen, and other airborne particles, providing cleaner air for your family. Regularly changing or cleaning these filters is vital to maintain optimal system performance.

Common issues with air filters:

Refrigerant Lines and Drainage

Refrigerant lines connect the indoor and outdoor units, allowing the flow of refrigerant between them. Proper installation and insulation of these lines are essential for system efficiency. Additionally, your AC system has a drainage system to remove excess condensation, preventing mold and mildew growth in your home.

Common issues with refrigerant lines and drainage:

  • Refrigerant leaks
  • Clogged condensate drain
  • Corroded or damaged refrigerant lines
  • Poor insulation


Modern air conditioning systems have come a long way in providing efficient and comfortable cooling for Orlando, Florida homes. Understanding the components of your AC system and maintaining them regularly is crucial for optimal performance and energy efficiency. Whether you’re upgrading your existing system or installing a new one, these components work in harmony to keep you cool and comfortable in the Sunshine State’s hot and humid climate.