Air Conditioner Buying Guide

Want to keep the heat out? No matter in which part of the world you live; it’s always safe to beat the heat outside with a reliable air conditioner. An AC that suits your home or office and saves your money.

If you are one of those who are planning to buy a brand new AC, you might have the following questions in mind.

  • What is meant by “ton” in Air Conditioning?
  • 1 ton, 1.5 ton, 2 ton; which one capacity is best for me?
  • What is inverter technology AC?
  • What’s the biggest difference between an inverter and non-inverter AC?
  • Which air conditioner is better- window or split?
  • What is the star & BEE rating?
  • What is a good EER for an air conditioner?

and many other relevant questions.

In this in-depth AC buying guide, you will get the answer to all of your questions. This will surely help you choose the best air conditioner for your home or office.

If you live in a hot part of the country it is probably hard to imagine surviving without air conditioning. More than 13 percent of the household spends its annual bill based on A.C.’s energy star. It is an equipment used to low down the heat and adjust the room temperature and provides cooling. As per Wikipedia:


Let’s try answering all the questions.

What is Ton in AC?

Lots of people are unaware of air conditioning tonnage. It doesn’t weigh 1 ton, then what does it mean?

The answer is pretty simple. Suppose you have installed 1 ton AC in your room. Then it will provide the same cooling effect as you would have put 1 ton of ice in your room. If we convert it mathematically, taking the measurement unit as latent heat of ice we will find:

1 Ton AC = 12000 BTU/hour
2 Ton AC = 18000 BTU/hour
3 Ton AC = 24000 BTU/hour

This means that it can extract the 12000 British Thermal Units from your environment.

10 Factors to consider before buying A.C.:

#1 Energy Star Rating

While buying a window or split AC you must focus on the energy star rating. The minimum star is 1 and the maximum star is 5. The more the star the more you can save the energy and money on the electricity bills. The star rating is given to A.C. on the basis of energy efficiency. Try to get the 5 stars A.C. for you, though its price is high you will save a lot of energy in the future.

#2 Warranty

Before buying the new unit, visit the manufacturer’s website and look for the unit warranty, which is a minimum 1 year but some units have a warranty for more than 1 year. The different manufacturer companies have different warranty years.

#3 Cooling/BTU

BTU(British Thermal Unit) is the cooling limit. While buying the A.C. you should keep in mind the cooling capacity of the unit. BTU is a measure of the ability to cool the room. The EER(Energy Efficiency Rating) is the amount of cooling it can provide using the limited amount of energy power.

#4 Noiseless

While buying the A.C. must consider the noise element, there should only be the noise of fan riding. You may have to pay the little more for this feature but as the demand increases the prices decreases. A manufacturer like, Friedrich is known for the quietest air conditioner.

#5 Air Purifiers

Make sure that it easily purifies the air, as all we need the cleansing air. If the air purifiers are not clean they may cause disease to people. Therefore it is always safe to invest in such an air conditioner which provides the good filtering of air to breathe.

#6 Variable Speed Fan

Flexible fans control commotion levels and framework efficiencies. They are designed to eliminate the discomforts caused due to regular switching of the power supply of A.C.

#7 Electronics Controls and Digital Display

The unit should provide the accuracy of temperature and all the other features in the digital display and should be remote control features for the users.

#8 Quiet Mode

Units with this feature give the solace than simply cooling.

#9 Heat Pumping Mode

Some units should be run backward to keep changing the warmth pump. This is usually accessible with bigger BTU outputs. A normal size A.C.’s is rated about 12.000 BTU. The total power consumption(Watts) varies from model to model.

#10 Wind Swing

It coordinates the air equally in the entire room. You can swing the air of the air conditioner wherever you want in the room.

What size portable air conditioner do I need?

In a standard room with 8-foot ceilings, use these estimations: 8,000 BTUs will cover 200 sq. ft.10,000 BTUs will cover 300 sq. ft. 12,000 BTUs will cover 400 sq. ft. You can multiply the room length by the room width to get the square footage of the area.

Different type of air conditioner

Central air conditioner

It consists of a condenser, an air handler with a blower with the evaporator coil. The condenser is on the outdoor and the air handler with the evaporator is in the basement. It uses refrigeration technology for cooling the air.

Window Air Conditioner

These A.C.s are suitable for the large and wide room, they pump the hot air outside the window and leaves the room cool. They are less common these days. Windows AC is quite large and a little noisy. They are expensive when used as they require much amount of energy to run. They are more powerful than a portable air conditioner.

Benefits Of Window A.C.:

  • Easy to install, no need to make holes in the wall.
  • Most models of window A.C. provide the heaters as well.
  • Suitable for the smaller rooms but having the window.

Split Air Conditioner

The split A.C. just needs to be mounted on the wall and the compressor sits on the outdoor. They are not noisy because the compressor makes noise sits outside. It absorbs the heat of the room and makes the room temperature cool. The downside of this unit is that they are not capable enough to cool the entire room and they are expensive to install.

Benefits Of Split A.C.:

  1. Wide blowers cool faster.
  2. It can be fitted on any wall.
  3. compressor and condenser are located outside hence make less noise.

Inverter Air Conditioner

The inverter is used to control the speed of the compressor which regulates the temperature. Due to the inverter air conditioner, the life of the unit parts has increased and fluctuations in the load are eliminated. They are quieter and need a low operating costs, but they might be more expensive than other units.

Benefits Of Inverter A.C.

  • Less Noise
  • Power Efficient
  • Quick Cooling
  • Consistent Cooling

Portable Air Conditioner

The portable air conditioner is more flexible than the window a.c. or the split a.c. As these types of A.C.’s does not require the installation in the wall or in the window. They can be moved anywhere in the room or house according to your need. These types of a.c. units use the air from inside the room to cool down the condenser. It has timer and remote control but they are heavy in weight and it takes the floor space.

Benefits Of  Portable A.C.:

  • Easy setup as it does not require the drills in walls and windows, takes the floor space.
  • Can be moved from one room to another.

Popular brands providing the best air conditioner


  • Voltas Air Conditioner
  • L.G. Air Conditioner
  • Samsung Air Conditioner
  • Blue Star Air Conditioner
  • Hitachi Air Conditioner


  • Carrier
  • Goodman
  • Lennox
  • Trane
  • York

These were some important information which will help you buy the best air conditioner. If you want to add your opinion, mention them in comments.