Indoor Air Conditioning: Your Complete Guide to Indoor Air Conditioners

Indoor Air Conditioning

Indoor air conditioning is an amazing way to keep your house cool during the warmer seasons as well as a cost-effective solution to keep warm during the cold ones. Being able to control the temperature and climate in your home doesn’t have to be a challenge and with the wide range of indoor air conditioners from MAC, you will benefit from the qualities they can offer you and your home.

But there are important questions you’ll want to have answered when considering installing an internal air conditioning unit in your home, such as how does an indoor air conditioner work? what types are there? and what are the additional benefits they can offer? In this blog, we will give you our expert guidance on indoor air conditioners.

What Is an Indoor Air Conditioner?

The main purpose of an air conditioner is to circulate cool air through the environment it is installed alongside and connected to, an outdoor unit. It is also important that the indoor air conditioner is wall mounted in a high position to efficiently circulate the cool air around the environment. Indoor air conditioners are ideal for cooling individual rooms and small spaces, helping to provide localised cooling rather than attempting to cool an entire house. These units are typically installed and used in residential settings, including apartments, houses, offices and other spaces where a centralised cooling system is not a practical solution.

The components that go into making an indoor air conditioner work include:

  • Compressor: This component is responsible for compressing the refrigerated gas and raising its temperature.
  • Condenser: Also located in the outside unit, the condenser changes the high-pressure, high-temperature gas from the compressor from a gas to a liquid.
  • Evaporator: Consisting of coils and fins, located near the indoor air conditioning unit, the low-pressure refrigerant liquid enters the evaporator and evaporates when the indoor air travels over the coils, taking heat from the air and cooling it.
  • Expansion valve: This is located between the condenser and the evaporator and acts as a metering device that controls the flow of the refrigerant entering the evaporator and reduces pressure.
  • Fan: This component helps to circulate the cooled air into the room.
  • Thermostat: This is the device that controls the desired temperature of the indoor aircon unit.

How Does an Internal Air Conditioning System Work?

Now that we know the various components that make up an indoor air conditioner, let’s look at the process of how it works.

Indoor air conditioning – and air conditioning in general – works on the principles of refrigeration. A unit will efficiently cool the indoor air by removing heat and moisture from the room.

The process can be broken down into a few steps:

  • Air intake: The unit will draw in the warm air from the room through the vent system, typically located somewhere on the front of the unit.
  • Air filtration: Located inside by the vent, the warm air will pass through an air filter to remove dust, pollen and other particles, to improve the overall air quality.
  • Cooling process: The warm air is passed through the various components inside the aircon unit, including the compressor, condenser, evaporator and expansion valve to cool the warm air which is then ready to be circulated through the room.
  • Air distribution: The cooled air is blown by the fan back into the room, effectively lowering the temperature and creating a more comfortable indoor environment.
  • Temperature control: The final process of how an internal air conditioning system works is down to the owner – you. By using the thermostat, the user can control the temperature of the room and once the desired temperature is met, the unit will stop its cycle. After a certain amount of time, the temperature will begin to rise, signalling the thermostat to begin the cycle to reach the cooler temperature the user desires.

An indoor air conditioner can efficiently cool the indoor air and keep the space at a reasonable temperature by cycling refrigerant through the evaporator and condenser coils continually.

Types Of Indoor AC Units

Wall Mounted Systems

Sometimes known as a ‘split unit aircon system’ – as there will be both an indoor and outdoor unit – a wall-mounted aircon system is installed on the wall of the room you’re looking to cool. These are some of the most popular indoor aircon units on the market and are ideal for homes as they are very quiet and will keep your room cool with ease.

Floor Mount Systems

If you are unable to install a wall-mounted unit, floor-mounted indoor air conditioning units will be a great alternative option. These are very easy to install and offer portability, meaning you can relocate this type of internal air con unit with ease, helping to provide cool air to wherever you desire.

Split System Air Conditioner

While the wall-mounted systems go by this name, these systems are purpose designed for larger rooms and are ideal for commercial spaces, such as offices and larger areas. Rather than just one unit located on a wall, a split system air conditioner will possess multiple units connected to one outdoor aircon system. These systems offer more precision with temperature, where users can control cool and warm air in unison with results happening on a much quicker basis.

Benefits Of Using Indoor Air Conditioning Units

Apart from providing a comfortable and desired temperature for users in warm weather, what other benefits does an indoor air conditioner offer? Firstly, those that suffer from respiratory health issues will benefit from the better air quality that indoor air conditioning units provide. The filters installed will remove dust, pollen and other particles that can pose a risk to people who suffer from asthma.

Indeed, thanks to the cooler air that will be circulating your room, those that struggle to sleep during warmer weather will be able to drift off with ease, with no more reason to feel hot, sticky and bothered when trying to sleep. Additionally, you won’t need to leave windows open during the day or night with the cool air flowing around, reducing the amount of bugs and insects entering your home as well as reducing the risk of intruders looking for an opportunity during the night. For more on the benefits of indoor aircon units, take a look at our blog on the key benefits.

Find Your Ideal Indoor Air Conditioner System

With the seasons becoming increasingly warmer, an indoor air conditioner is the best and most cost-effective solution to keep you and your family cool, healthy and happy. There are several types to choose from which can offer an individual the benefits and requirements they desire, and here at MAC, we have a wide selection of indoor air conditioners to choose from. Take a look at our range to find the ideal aircon unit for your home.

We would be more than happy to help you find what you’re looking for, so contact us today by phone on 0121 730 4800 or send us an email at

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