Air Conditioners are always at the top of the room or next to the ceiling. Air Conditioners are placed there for an excellent reason that most of us are unaware of. There’s a very logical explanation behind getting your air conditioner set on top of a room. To understand the explanation, you will need to grasp physics and how heat transferring works. 

Today, we will talk about, “why are air conditioners placed at the top of a room?”. By reading this article, all of your questions regarding this matter will be answered.

why are air conditioners placed at the top of a room

Why Are Air Conditioners Placed At The Top Of A Room?

To find out why air conditioners are placed at the top of a room, you need to know a few things about how heat transfers and the basics of physics. After learning these things, it’ll be easier for you to understand.

Heat transfers in 3 ways. They are Conduction, Convection, and Radiation. In terms of air conditioning units, the primary process of air heat transfer is convection—the movement caused within a fluid by the tendency of hotter and, therefore, less dense material to rise. Colder, more dense material to sink under the influence of gravity, which results in heat transfer, is called convection.

When the air cools, it contracts, gets denser, and sinks. When this happens, the warmer air at the bottom of the room rises as it is less dense. This process keeps repeating until the room is cool.

For convection to happen, the air conditioner has to be placed on the top side of the room. The placement of the air conditioner accommodates a proper cooling method. If the air conditioning units were installed near the ground level of a room, then the cold air coming from the air conditioner would not rise and cool the room as it is denser than warm air.

Read more: Does Antifreeze Help Air Conditioner?

Why Are Air Conditioners Fitted Near The Ceiling?

Air conditioners are mostly seen fitted near the ceiling. When it comes to air conditioning units, the primary process of air heat transfer is convection. The movement caused within a fluid by the tendency of hotter and therefore less dense material to rise, and colder, denser material to sink under the influence of gravity, which results in heat transfer, is called convection.

The main reason behind fitting air conditioners near the ceiling is that it helps cool the room faster and a lot more efficiently. By getting your air conditioner provided near the ceiling, you save time and energy.

Why Are Air Conditioners Installed Near The Ceiling Of The Room?

As we all know, warm air is very light. Warm air is light because it expands and loses its moisture as the air gets hot. When the air expands, it becomes a lot lighter. Lighter air can travel up towards the ceiling really fast while the cold, dense air slowly starts to come down towards the floor. 

Air conditioners are installed near the ceiling because the warm air again goes through a cooling process, and the air conditioner repeats the process until the room is cool, which causes a uniform cooling of the room.

For instance, if the air conditioner is at the bottom of the room, it cools the air surrounding it, and this air stays near the air conditioner due to being too dense and cold. However, The warm air that’s up towards the ceiling stays hot for a very long time, making the cooling process of the air conditioner ineffective.

Why Are Air Conditioners Placed Higher Up On The Wall?

Air Conditioners are placed higher up on the wall because placing them higher up on the wall increases the efficiency of the air conditioner and helps with the cooling process, and it also makes the room cool down a lot faster.

However, air conditioners can be placed anywhere your heart desires to put them. It depends on your perspective and the type of air conditioner you are using. 

Why Should Air Conditioners Be Installed At The Top windows?

Air Conditioners should be installed because the warm air is usually around the top of the room, around the ceiling, and windows. So, by installing the air conditioner at the top of the windows, the warm air around the air conditioner cools down fast. This is why air conditioners should be installed at the top windows.

how wide is a 10000 btu air conditioner

List Of Best Air Conditioners

1)Midea U Inverter Window Air Conditioner

About this air conditioner 

More than 35% Energy Saving: With the advanced DC Inverter technology, Midea U achieves over 35% energy savings compared to other traditional units, and it’s the first window AC to obtain the ENERGY STAR Most Efficient 2020 Certification. 

Extreme Quiet: It is nine times quieter than some traditional units. The U-shape blocks the noise from the cooling system using your window. This design allows for extremely quiet operation as low as 42 dBA – almost as quiet as a library.

Maximum window thickness including non-removable handle: 2-7/8 inches

Flexible window open: Midea U-shaped design allows your window to open.

Refrigerant: R32Smart Control: The Midea U is Wi-Fi-enabled. It can be controlled from anywhere through the cloud using the MideaAir app on iOS or Android. You can also use voice commands with Alexa or Google Assistant if you prefer.

Robust Installation: this air conditioner comes with a Support bracket for a more robust installation that supports the unit with the window open or closed. Available for single-hung or double-hung windows with sizes: 22-36 inches, minimal height at 13.75 inches.

2)GE 2-in-1 Smart Air Conditioner & Dehumidifier for Window | 8,100 BTU

About this air conditioner 

ULTRA-QUIET – 50% quieter than similar GE Appliance models*, this model delivers 43 dB of maximum comfort and minimum noise *Based on perceived loudness

COOLS MEDIUM ROOMS – Delivers 8,100 BTU cooling capacity for medium rooms up to 350 sq ft connected PEACE OF MIND- Integration with the SmartHQ app allows you to monitor, schedule, and control your smart air conditioner from anywhere, while compatibility with your favorite devices, including Amazon Alexa and Google Assistant, make everyday tasks easier than ever before

MAXIMUM COMFORT COOL – Select from 3 cooling and 3 fan speeds for energy-efficient cooling

DEHUMIDIFY – The built-in dehumidifying capability balances humidity levels in the room to keep you comfortable and to breathe easier

3)MIDEA 5,000 BTU EasyCool Window Air Conditioner

About this air conditioner 

FAST COOLING: 5,000 BTU window-mounted mini-compact air conditioner is perfect for cooling a room up to 150 square feet. Quickly cools down your home, office, or apartment for maximum comfort.

EFFORTLESS OPERATION: 7 temperature settings, 2 cooling/2 fan-only speeds, and 2-way air direction give you the perfect amount of cooling every time

EASY INSTALLATION: Install easily with minimal modification to the existing window frame. Suitable for windows 23”-36″ wide and minimum 13″ high. All mounting accessories are included.

ENERGY-EFFICIENT: Combined Energy Efficiency Rate (CEER): 11.0. It helps reduce the energy costs

WASHABLE FILTER: The reusable and washable mesh filter reduces room odors for a more comfortable environment

4)SereneLife 12,000 BTU Portable Air Conditioner 

About this air conditioner 

HANDY AND PORTABLE: The Serene Life Portable Air Conditioner System features a lightweight, handy, sleek body design intended to be used in the bedroom, living room, or garage at home or office. It features rolling wheels for easy portability.

BUILT-IN DEHUMIDIFIER: you don’t only get the cooling effect of the portable AC but also help reduce humidity levels, a huge financial and space-saving!

4 OPERATING MODES: The compact floor AC indoor cooler conditioning unit features a simple electric plug-in operation and has 4 modes – cooling, heating, dehumidifier, and fan. It also features automatic swing mode w/ moving wind vent for maximum air circulation.

REMOTE CONTROL: Features a digital touch button control panel that includes the power, mode, timer, temperature, and fan speed settings. Other functions such as the unit selector (°C/°F) sleep key can be adjusted using the included remote control.

GREAT FOR ALL YEAR ROUND: With 12, 000 BTU (ASHRAE) / 7,000 BTU (SACC) cooling power and 12, 000 BTU Heating power, this is the best option to save space and money. The cold air can cover a room up to 450+ sq. ft. Airflow is rated at 380 m3/hr. Moisture removal/dehumidifier at 1. 8 liters/hr. w/ an operating noise level of only 56-59 dBa

5)Whynter ARC-14S

About this air conditioner 

14,000 BTU (ASHRAE) / 9,500 BTU (SACC) cooling capacity. Intake / Exhaust hoses: Based on the version of the portable air conditioner you have, you may need a 5.0″ or 5.9″ diameter hose(s) and/or connector(s) listed below. Please make sure to measure your existing hose(s) before ordering additional accessories. NOTE: Please note that we do not recommend extending the exhaust hose(s) more than 9 feet long.

Award-Winning: 1. Good Housekeeping’s “2020 Best Overall” and “can cool down a room faster than other portable units” 2. Consumer Report’s 2020 Highest Score; UL listed

Dual hose operation; Cools up to a 500 square feet space(ambient temperature and humidity may influence optimum performance)

Dehumidifying capacity: 71 pints per day; Air Flow (at high speed): 430 m3/h / 253 CFM; 3 fan speedsThree operational modes: Air conditioner, dehumidifier or fan; Cooling capacity 14000 BTU (ASHRAE-128 Standard) / 9500 BTU (DOE+ 2017 Standard); Maximum power consumption: 1300 W / 11.6 A. Noise level 

Eco-friendly CFC free Green R-32 refrigerant; Extendable exhaust hose (up to 60″); Window kit dimension: 6.5″ W x 20″ L (minimum), 46″ (maximum); Unit dimensions: 19″ W x 16″ D x 35.5″ HNoise reflecting off hard surfaces such as a floor or wall can make the sounds seem louder than they actually are.

Installation Instruction: Clean the air filters, Add minimum distance/gap of clearance from the air intake, Make the length of the exhaust hose is as short as possible, Set the unit to Cooling mode.

6)BLACK+DECKER BPACT10WT Portable Air Conditioner

About this air conditioner 

QUIET & POWERFUL – Our 6,000 BTU DOE (10,000 BTU ASHRAE) compact air conditioner (16.5 x 11.5 x 26 in) will keep you cool and comfortable all summer. An adjustable fan speed cools the air to 65°F at the coolest setting. Sleep mode makes it extra quiet while you rest.

PERFECT FOR SMALL ROOMS – This floor-standing portable AC unit provides steady, fast, effective cooling for rooms up to 150 sq. ft. It’s the ideal small air conditioner for dorms, apartments, cabins, campers, offices, bedrooms, or living rooms.

SIMPLE & QUICK TO INSTALL – Just wheel this portable air conditioner into any room with a double-hung or sliding window. Attach the included hose (4′ 11″) & window adapter, & plug it into an outlet! At the end of the season, just unhook & store.

EASY TO USE & CLEAN – The simple remote control & top-mounted LED display with a 24-hour timer allow you to precisely control the air temperature. To clean the filter, just slide it out twice a month, rinse it thoroughly under running water, & put it back3-in-1 

FUNCTIONALITY – Combines 3 energy-efficient functions for all of your cooling & ventilation needs with cool, fan, & dehumidifying modes all in one machine. Bucket-less, self-evaporating operation makes your living space cool, clean, and dry noise reflecting off hard surfaces such as a floor or wall can make the sounds seem louder than they actually are.

Installation Instruction: Clean the air filters. Add minimum distance/gap of clearance from the air intake. Make the length of the exhaust hose is as short as possible. Set the unit to Cooling mode. Make sure the unit is leveled—drain water from the drain plug at the back of the air conditioner.


The reason behind “Why Are Air Conditioners Placed At The Top Of A Room?” has been explained. If you are looking for more details, then you can contact a professional technician. That way, all of your problems are going to get solved.

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