Air Conditioning Explained

Welcome to Air Conditioning Explained where I talk about this popular cooling solution utilized in many homes and workplaces keep the atmosphere comfortable.

I'd first like to examine some of its basic functions as well as what maintenance is necessary in order to keep it running optimally for years.

What is Air Conditioning?

Air conditioning is the practice of controlling the temperature and humidity levels within an enclosed space.

AC systems are typically employed for cooling homes or buildings, but they can also heat and ventilate. AC systems come in both residential and commercial versions.

Learn How Air Conditioning Works

Air conditioning works when room-temperature air is circulated through an evaporator coil that's chilled by refrigerant. This chills the air and distributes it throughout the room evenly.

The warmer air that passes over the coil cools down and is then distributed throughout a building for comfortable temperature and humidity levels.

At the refrigeration stage of all air conditioners, heat exchange takes place to produce hot and humid air while keeping its interior cold. This process is similar to how domestic refrigerators generate both warm and cold air simultaneously.

Main Air Conditioner Types

There are various types of air conditioners to choose from.

When it comes to air conditioners, there is a wide selection of models designed to cool various spaces of various shapes and sizes.

Let's take a closer look at some of the most widely used AC types to determine which ones are ideal for where they should be installed.

Central Air

Also referred to as Heating, Ventilation & Air Conditioning (HVAC), these heating and cooling systems are generally commonplace in larger buildings.

This type of system is powered by central heating and cooling units and distributes heated or cooled air through ducts installed in walls, floors and ceilings.

While arguably the best comprehensive indoor climate solution, central air can be expensive to install and can cost a lot to run when not used efficiently. There are several other smaller cooling solutions that are cheaper to install and operate.

AC Mini-Split

Split systems are the most widely used air conditioning solution and consist of an outdoor and indoor unit.

The indoor unit houses the fan, evaporator and other components; while the outdoor unit contains both condensing ring and compressor as well as its own fan. These units are linked together by refrigerant line which transfers heat from outside to inside.

Self-Contained or Packaged AC Units

Single cooling units (e.g., window AC, PTAC and portable AC) are smaller in size and provide cooling only for a specific room.

Each is best suited for specific tasks.

Window AC

Window AC units may be utilized in buildings where central air is unavailable or the owner cannot afford a minisplit system.

Window units provide effective cooling in rooms where they're installed, though they take up space and may be difficult to fit into windows, thus decreasing natural light levels.

Coolers remove warm, humid air from inside a room and pump it back in. Conversely, venting the hot resulting air outside helps to remove it.

Packaged Terminal Air Conditioner (PTAC) units work similarly to window units; the only distinction being that they are mounted against a wall rather than directly into an opening in the window.

PTAC

PTACs are most frequently seen in hotel/motel rooms, some hospitals wards, and health centers.

Window AC units may be cheaper, but they tend to be less energy-efficient and may end up costing you more in the long run.

Portable AC

Portable units offer greater mobility since they're lightweight and can be moved around easily. However, these must be connected directly to an outlet in order for hot air to escape outdoors.

Air conditioners should be appropriately sized to cool a space. A system that's too small won't function efficiently, while one that is too large could generate excessive heat and increase energy bills.

Air Conditioning's Advantages

Air conditioning offers many benefits for homeowners and office workers.

Air conditioners can be a great asset in your home and office during hot weather, providing numerous advantages.

• Comfort: Cooling a space can make it more comfortable, especially in hot climates.
• Air Quality: An air conditioner improves indoor air quality by eliminating dust, pollen or other particles.
• Energy Efficiency: Being able to maintain consistent temperatures makes an area more energy-efficient.
• Safety: Air conditioning can make a room safer by decreasing the likelihood of fires and making it easier to detect smoke or carbon monoxide emissions.
• Health Benefits: Cooling a room can help reduce the risk of heat related illnesses like heat stroke or exhaustion.

Air Conditioning's Disadvantages

The primary disadvantage to running an AC system is its considerable cost.

Electricity prices are steadily increasing, while AC efficiency has reached its maximum in the current design. Therefore, running AC during hot weather will become increasingly costly.

AC systems also need routine upkeep, which can add a substantial expense to household budgets.

Air Conditioning Maintenance

Air conditioners require regular maintenance to remain optimal, no matter what you may think.

Maintaining your conditioner's efficiency and longevity is essential for its performance. Regular upkeep will make your system more efficient, enabling it to operate at peak performance levels.

• Change Your Air Filters Regularly: For optimal system performance, change your filter at least once a month.
• Annual Refrigerant Level Check: Check refrigerant levels annually to ensure optimal operation.
• Clean Coils
• Check Belts and Hoses for Wear Signs.
• Conductive Inspections of Electric Connections: It is essential to inspect electric connections for signs of corrosion and damage.

Summary

Air conditioning is an integral component in creating a comfortable indoor atmosphere.

However, for your system to function optimally for many years, you must ensure it is correctly sized and maintained. Regular upkeep and inspections are essential in guaranteeing your machine runs efficiently for years.

A happy home is a comfortable home and when the indoor temperature is just right, no matter how the weather is outside, that's real comfort!

Resources:

www.hvacrtraininginstitute.com
www.energy.gov/energysaver/air-conditioning
www.sciencedirect.com/topics/engineering/air-conditioner

Also, take a look at the "how AC works" video below:

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Posted: February 18, 2023


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