How Does a Split Air Conditioner Work? A Comprehensive Guide


Air conditioning systems have become an integral part of our lives, especially during scorching summers. Among the various types of ACs, split air conditioners are popular for their efficiency and quiet operation. In this detailed blog, we’ll explore how split ACs work, their components, and an innovative solution to enhance indoor air quality.


The Basics: Refrigeration Mechanism of Split AC

A split air conditioner operates based on the principles of refrigeration. It consists of two main units: the indoor unit (located inside the room) and the outdoor unit (placed outside the building). Let’s delve into the details:

  • Indoor Unit: Contains the evaporator coil, which aids in cooling by absorbing heat from the room.
  • Outdoor Unit: Houses the condenser coil, responsible for releasing excess heat to the external environment.

The key principle: Energy cannot be created or destroyed. To cool the room, the AC must transfer heat from the indoor space to the outdoor world.

2. The Split AC Working Cycle


  1. The compressor initiates the process by compressing the refrigerant gas, increasing its pressure and temperature.
  2. The heated refrigerant flows into the condenser coil in the outdoor unit.

Expansion Valve

  1. The expansion valve creates a low-pressure situation, causing a portion of the liquid refrigerant to turn into gas.
  2. This phase change cools down the refrigerant.

Evaporator Coil

  1. The cooled refrigerant reaches the evaporator coil in the indoor unit.
  2. The blower circulates room air over the coil, allowing the refrigerant to absorb heat from the air.
  3. The refrigerant mainly exists in the gaseous state after this process.

Cooling Cycle

  • The refrigerant completes a cycle, moving from the compressor to the condenser coil, expansion valve, and evaporator coil.
  • This cycle repeats until the desired room temperature is achieved.

An air conditioner primarily functions to cool indoor air by circulating refrigerant through coils, which absorbs heat and transfers it outside, subsequently circulating the cooled air back into the room. While air conditioners feature basic filters, they serve mainly to protect the equipment from dust and debris rather than to purify the air. Consequently, pollutants present in the indoor air, such as dust, pollen, pet dander, or volatile organic compounds (VOCs), continue to be recirculated throughout the room without effective removal. While air conditioning may help reduce indoor humidity levels and improve comfort, it does little to address indoor air quality issues caused by pollutants, potentially even contributing to indoor air pollution in poorly ventilated spaces. Therefore, for effective improvement of indoor air quality and reduction of airborne pollutants, dedicated air purifiers are necessary.


3. Airth Air AC Purifier: Elevating Indoor Air Quality

The Airth Air AC Purifier revolutionises split ACs by converting them into powerful air purifiers along with cooling. Here’s how it works:

  • Installation: Incorporating the Airth Air AC Purifier into your split AC system is a seamless process that requires minimal effort. Simply affix the purifier to your existing split AC unit, ensuring it is securely attached for optimal performance. The user-friendly design ensures hassle-free installation, allowing you to enjoy the benefits of enhanced air purification without any complexity or inconvenience.
  • 99% Germ Elimination: Powered by cutting-edge technology, the Airth Air AC Purifier is engineered to combat harmful germs and bacteria lurking in the indoor environment with remarkable efficacy. Through advanced filtration and purification mechanisms, the purifier targets and neutralises a wide spectrum of pathogens, achieving a staggering 99% germ elimination rate. This comprehensive approach to indoor air sanitation provides you and your loved ones with a healthier living environment, free from the threat of microbial contaminants.
  • Rapid Air Purification: Experience the transformative impact of rapid air purification with the Airth Air AC Purifier. Within just thirty minutes of activation, you'll notice a discernible improvement in indoor air quality, characterised by a refreshing sense of cleanliness and purity. By swiftly removing airborne pollutants, allergens, and odours, the purifier creates an environment conducive to enhanced well-being and comfort. Whether it's eliminating cooking odours, neutralizing pet dander, or reducing airborne allergens, the Airth Air AC Purifier delivers prompt and effective air purification, ensuring that you can breathe easy with confidence.

In summary, split ACs keep us cool by transferring heat, and with the Airth Air AC Purifier, you can breathe cleaner air while staying comfortable.

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