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How Do I Calculate Air Conditioner Size? The 13 Detailed Answer

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To calculate the size of the air conditioner you need for a room, first, multiply the length of the room with its width. Then multiply it with 25 BTU to get the ample cooling for the room under different weather conditions. For example, if the room is 15 feet long and 12 feet wide, it comes to 180 square feet.For example, a 30,000 BTU, 2.5-ton air conditioner is made to effectively cool a home between 1,200 and 1,500 square feet. A slightly larger 3,600, 3-ton unit, is designed for homes that are 1,500 to 1,800 square feet.12,000 BTUs will cover 400 sq. ft. (3,200 cubic feet)

How many btu do I need for my room?
Room Type Room Size Recommended BTU
12 x 12 room 144 sq ft 5,000 BTU
12 x 24 room 576 sq ft 12,000 BTU
13 x 13 room 169 sq ft 6,000 BTU
14 x 16 room 224 sq ft 6,000 BTU
Apr 25, 2022
How Do I Calculate Air Conditioner Size?
How Do I Calculate Air Conditioner Size?

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How many BTU do I need for a 12×12 room?

How many btu do I need for my room?
Room Type Room Size Recommended BTU
12 x 12 room 144 sq ft 5,000 BTU
12 x 24 room 576 sq ft 12,000 BTU
13 x 13 room 169 sq ft 6,000 BTU
14 x 16 room 224 sq ft 6,000 BTU
Apr 25, 2022

How many sq ft will a 2.5-ton AC cool?

For example, a 30,000 BTU, 2.5-ton air conditioner is made to effectively cool a home between 1,200 and 1,500 square feet. A slightly larger 3,600, 3-ton unit, is designed for homes that are 1,500 to 1,800 square feet.

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How to calculate room air conditioner size | AC calculation | Earthbondhon

How to calculate room air conditioner size | AC calculation | Earthbondhon
How to calculate room air conditioner size | AC calculation | Earthbondhon

Images related to the topicHow to calculate room air conditioner size | AC calculation | Earthbondhon

How To Calculate Room Air Conditioner Size | Ac Calculation | Earthbondhon
How To Calculate Room Air Conditioner Size | Ac Calculation | Earthbondhon

What size room will a 12000 BTU air conditioner cool?

12,000 BTUs will cover 400 sq. ft. (3,200 cubic feet)

Which AC is suitable for 12×12 room?

According to Energy Star, a 12×12′ or 144 sqft room requires 5,000 BTU of cooling capacity when occupied by two persons. If the room is heavily shaded, it only requires 4,500 BTU. If the room is very sunny, it requires 5,500 BTU. For each additional person, you need to add 600 BTU.

How many BTU do I need calculator?

For example, a 300 square foot room typically requires 7,000 BTUs to maintain a comfortable temperature, while a 1,000 square foot room requires 18,000 BTUs. A simple formula to determine your heating needs is: (desired temperature change) x (cubic feet of space) x . 133 = BTUs needed per hour.

How many square feet is a 3 ton air conditioner good for?

ZONE 1 ZONE 3
2 Tons 901 – 1200 sf 1001 – 1300 sf
2.5 Tons 1201 – 1500 sf 1301 – 1600 sf
3 Tons 1501 – 1800 sf 1601 – 1900 sf
3.5 Tons 1801 – 2100 sf 1901 – 2200 sf
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What is the difference between a 2 ton and 3 ton air conditioner?

Differences in Air Conditioner Size

A two-and-a-half ton air conditioner has 30,000 BTU’s and can cool a home sized 1,201 to 1,500 square feet while a three ton unit has 36,000 BTU’s and is designed for homes 1,501 to 1,800 square feet.


See some more details on the topic How do I calculate air conditioner size? here:


Understanding Air Conditioner Sizing – The Spruce

To calculate the size, simply multiply the length times the width of the room or area to be cooled. Then, as a practical number, multiply that …

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Calculating Air Conditioner Sizing | Your AC Sizing Guide

You’ll sometimes see them measured in air conditioning tonnage, or “tons.” The simplest conversion here is that every “ton” equals 12,000 BTUs. A 36,000 BTU …

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AC Size Calculator | Get BTU’s and Tonnage – Free and Easy!

This BTU and AC tonnage calculator can help. … Another way to size air conditioners is to determine the system size that is currently in place.

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How to Determine the Size of HVAC You Need – Climate Tech …

Once you have the base BTUs figured for your home’s size, you can then figure out the size of AC and heating units you need. For the air …

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What size AC do I need for 1500 square feet?

Therefore, if your home is 1,500 square feet, your air conditioning unit should be 3.5 to four tons.

What size room will a 18000 BTU air conditioner cool?

BTU Sizing Chart for Mini Split Systems
Area To Be Cooled Capacity Needed (BTUs Per Hour)
700 to 1,000 square feet 18,000 BTUs
1,000 to 1,200 square feet 21,000 BTUs
1,200 to 1,400 square feet 23,000 BTUs
Up to 1,500 square feet 24,000 BTUs
Jul 18, 2016

What size room will a 15000 BTU air conditioner cool?

Air conditioners rated at 15,000 Btu should be enough to cool most rooms up to about 875 sq. ft.


Air Conditioner – How To Select The Proper Size Unit

Air Conditioner – How To Select The Proper Size Unit
Air Conditioner – How To Select The Proper Size Unit

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Air Conditioner - How To Select The Proper Size Unit
Air Conditioner – How To Select The Proper Size Unit

What size AC do I need for 1200 sq ft?

STEP 1: Determine how many BTUs of heating and tons of AC you need
House Square Footage BTUs Needed
500 – 700 14,000
700 – 1,000 18,000
1,000 – 1,200 21,000
1,200 – 1,400 23,000
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What size air conditioner do I need for a 12×15 room?

That means 12×15=180 square feet. Take the 180 sq. ft. times 25 BTU per square foot and you get the minimum BTU air conditioner you should buy.

What size air conditioner do I need for a 12×12 bedroom?

If you want to properly cool down a 300 square foot area (or room), you need a 6,000 BTU air conditioner. Obviously, the problem arises when you have a tiny 12×12 room, for example. According to the US Department of Energy directive, an air conditioner’s most appropriate size would be 2,880 BTU unit.

What is cooling capacity of 1.5 ton AC?

Cooling Capacity:

Similarly, if we consider 1.5 Ton AC, the cooling capacity is 18000 BTU/hr, which means 5275 Watt approx.

How many BTU do I need per cubic foot?

The general rule of thumb is to choose a unit at a measurement of roughly 20 BTU per square foot of living space.

What is the formula for calculating BTU?

Some common BTU calculating formulas are shown below. BTU = Flow Rate In GPM (of water) x (Temperature Leaving Process – Temperature Entering Process) x 500.4*Formula changes with fluids others than straight water.

How do I calculate BTU for air conditioner?

All you have to do is to multiply the length of your room in feet by the width of your room in feet, and then multiply that by 25. That will give you the BTU needed to properly cool your room.

What size AC do I need for 1700 sq ft?

Furnace and Air Conditioner size for a detached 2-storey home
House square footage * Furnace Output [BTU/hr] Air Conditioner size [ton]
up to 1300 sq ft 40,000 BTU/hr up to 2 ton
1300 to 1700 sq ft 45,000 BTU/hr 2 ton
1700 to 2500 sq ft 55,000 BTU/hr 2.5 ton
2500 to 3500 sq ft up to 65,000 BTU/hr 3 to 3.5 ton
May 26, 2017

Sizing Heat AC, Load Calculation

Sizing Heat AC, Load Calculation
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Sizing Heat  Ac, Load Calculation
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Can I replace a 3 ton AC with a 4 ton?

Proper size is a must. There is no reason for you to install a 4 ton if you can use a 3 ton. The low stage isn’t that much less than full capacity because of the unloading scroll systems.

What size AC do I need for 2000 square feet?

If your home is 2000 square feet, you can calculate your HVAC needs the same as you would for a 1600 square foot home. Assuming one ton of cooling capacity can cool 400 square feet of your home, you’ll need about 5.0 tons of air conditioning capacity. Multiply this by 12,000 BTUs, and you’ll get 60,000 BTUs.

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