# Air Conditioner Sizing Guide: Sizing Chart (BTU & Ton)

Rule of thumb is a great way to size an air conditioner most of the time. However, one calculation method can't be used for all applications. Thus, I created multiple sizing charts for the most common applications so that people can quickly find the suitable air conditioner size.

To calculate air conditioner size, multiply the length of the room by the width of the room to get the square footage of the room. Then, multiply the square footage by 25-50 btu/hr.sqft according to the application to obtain the cooling capacity needed. Finally, match the air conditioner size with the required cooling capacity.

Following are a series of air conditioner sizing charts for different applications from bedrooms and living rooms to apartments and mobile homes. My recommended air conditioner sizes are based on the following criteria:

• Based on adjusted rule of thumb according to my research and experience
• Room sizes are common and typical for most places
• Square footages are approximated and averaged
• Resulted air conditioner sizes are actual capacity available in the market

With that said, you may find the suitable air conditioner size using one or more of the following sizing chart(s).

## Common Residential Air Conditioner Sizes

Below is a table of common residential air conditioner sizes in 4 different units of measurement for cooling capacity (BTU, Ton, HP and kW). These different units of measurement don't translate mathematically. They are listed based on commonly available sizes. Hence, you should not use this table for unit conversion.

## Common Central Air Conditioner Sizes

Below is a table of common central air conditioner sizes in 4 different units of measurements for cooling capacity (BTU, Ton, HP and kW). Again, these different units of measurement don't translate mathematically. They are listed based on commonly available sizes. Hence, you also should not use this table for unit conversion.

## Room Air Conditioner Sizing Chart by Room Size

Below is a room air conditioner sizing chart by room size. The air conditioner sizes (BTU & Ton) are rounded to the actual common air conditioner sizes rather than just the result of the calculated cooling capacity. Hence, you can conveniently match the exact air conditioner based on your room size.

## Room Air Conditioner Sizing Chart for Bedrooms

Below is a room air conditioner sizing chart for bedrooms. The air conditioner sizes (BTU) are rounded to the actual common air conditioner sizes rather than just the result of the calculated cooling capacity. Hence, you can conveniently match the exact air conditioner based on your bedroom size.

## Room Air Conditioner Sizing Chart by Room Type

Below is a room air conditioner sizing chart by room type. The air conditioner sizes (BTU) are rounded to the actual common air conditioner sizes rather than just the result of the calculated cooling capacity. Hence, you can conveniently match the exact air conditioner based on your type of room and its respective square footage.

## Air Conditioning Sizing Chart by Total Square Footage

Below is an air conditioner sizing chart by total square footage. The air conditioner sizes (BTU & Ton) are rounded to the actual common air conditioner sizes rather than just the result of the calculated cooling capacity. Hence, you can conveniently match the exact air conditioner based on the square footage of any room, house or home.

Return Air Grille Sizing Guide CFM ...
Return Air Grille Sizing Guide CFM Chart & Calculation

## Central Air Conditioner Sizing Chart for Homes by Total Square Footage

Below is a room air conditioner sizing chart for homes by total square footage. The air conditioner sizes (BTU & Ton) are rounded to the actual common air conditioner sizes rather than just the result of the calculated cooling capacity. Hence, you can conveniently match the exact air conditioner based on your home size.

## Air Conditioner Sizing Chart for Houses by No. of Bedroom

Following are air conditioner sizing charts for houses by no. of bedroom. A house can either use central or room air conditioners depending on your preference.

### Central Air Conditioner Size for Houses

Below is a central air conditioner sizing chart for houses. The air conditioner sizes (BTU) are rounded to the actual common air conditioner sizes rather than just the result of the calculated cooling capacity. Hence, you can conveniently match the exact air conditioner based on the square footage of your house.

### Room Air Conditioner Size for a 2-Story House

Below is a room air conditioner sizing chart for a 2-story house. The air conditioner sizes (BTU) are rounded to the actual common air conditioner sizes rather than just the result of the calculated cooling capacity. Hence, you can conveniently match the exact air conditioner based on the type of room and its respective square footage.

### Room Air Conditioner Size for a 3-Bedroom House

Below is a room air conditioner sizing chart for a 3-bedroom house. The air conditioner sizes (BTU) are rounded to the actual common air conditioner sizes rather than just the result of the calculated cooling capacity. Hence, you can conveniently match the exact air conditioner based on the type of room and its respective square footage.

### Room Air Conditioner Size for 4-Bedroom Houses

Below are room air conditioner sizing charts for 4-bedroom houses (2000 sqft and 2400 sqft). The air conditioner sizes (BTU) are rounded to the actual common air conditioner sizes rather than just the result of the calculated cooling capacity. Hence, you can conveniently match the exact air conditioner based on the type of room and its respective square footage.

## Air Conditioner Sizing Chart for Apartments by No. of Bedroom

Below is an air conditioner sizing chart for apartments by no. of bedroom. The air conditioner sizes (BTU) are rounded to the actual common air conditioner sizes rather than just the result of the calculated cooling capacity. Hence, you can conveniently match the exact air conditioner based on the square footage.

### Room Air Conditioner Size for a 1-Bedroom Apartment

Below is a room air conditioner sizing chart for a 1-bedroom apartment. The air conditioner sizes (BTU) are rounded to the actual common air conditioner sizes rather than just the result of the calculated cooling capacity. Hence, you can conveniently match the exact air conditioner based on the type of room and its respective square footage.

### Room Air Conditioner Size for a 2-Bedroom Apartment

Below is a room air conditioner sizing chart for a 2-bedroom apartment. The air conditioner sizes (BTU) are rounded to the actual common air conditioner sizes rather than just the result of the calculated cooling capacity. Hence, you can conveniently match the exact air conditioner based on the type of room and its respective square footage.

## Room Air Conditioner Sizing Chart for Garages by No. of Car

Below is a room air conditioner sizing chart for garages by no. of car (insulated and non-insulated). The air conditioner sizes (BTU) are rounded to the actual common air conditioner sizes rather than just the result of the calculated cooling capacity. Hence, you can conveniently match the exact air conditioner based on how many cars and the respective square footage.

## Room Air Conditioner Sizing Chart for RVs by Type & Size

Below is a room air conditioner sizing chart for RVs by type & size. The air conditioner sizes (BTU) are rounded to the actual common air conditioner sizes rather than just the result of the calculated cooling capacity. Hence, you can conveniently match the exact air conditioner based on the type of RV and the respective size.

## Air Conditioner Sizing Chart for Mobile Homes by Type & Size

Following are air conditioner sizing charts for mobile homes by type & size. A mobile can either use central or room air conditioners depending on your preference.

### Central Air Conditioner Size for Single-Wide Mobile Homes

Below is a central air conditioner sizing chart for single-wide mobile homes. The air conditioner sizes (BTU & Ton) are rounded to the actual common air conditioner sizes rather than just the result of the calculated cooling capacity. Hence, you can conveniently match the exact air conditioner based on the size of the mobile home.

### Central Air Conditioner Size for Double-Wide Mobile Homes

Below is a central air conditioner sizing chart for double-wide mobile homes. The air conditioner sizes (BTU & Ton) are rounded to the actual common air conditioner sizes rather than just the result of the calculated cooling capacity. Hence, you can conveniently match the exact air conditioner based on the size of the mobile home.

### Room Air Conditioner Size for a Single-Wide Mobile Home

Below is a room air conditioner sizing chart for single-wide mobile homes. The air conditioner sizes (BTU) are rounded to the actual common air conditioner sizes rather than just the result of the calculated cooling capacity. Hence, you can conveniently match the exact air conditioner based on the size of the mobile home.

### Room Air Conditioner Size for a Double-Wide Mobile Home

Below is a room air conditioner sizing chart for double-wide mobile homes. The air conditioner sizes (BTU) are rounded to the actual common air conditioner sizes rather than just the result of the calculated cooling capacity. Hence, you can conveniently match the exact air conditioner based on the size of the mobile home.

## Digital Products by aircondlounge

These are the top selling digital products made by me and sold on aircondlounge. Check them out and see which products fit your needs.

### Design Engineer Starter Pack

Kick start your HVAC design journey with nine (9) calculators, five (5) diagrams and three (3) charts.

• Simple design
• Easy to use
• Key values included

### HVAC Basics (eBook)

Learn different types of HVAC components used in residential and commercial buildings.

• Summary list
• Sample photos

### Chilled Water System (eBook)

Pursuit the truth and learn the fundamental ways to approach the chilled-water system.

• Comprehensive explanation
• Fundamental approach
• Progressive teaching

## Recommended Air Conditioners

I reviewed and compared hundreds of air conditioners. These are my latest recommended products. Check them out if you're looking to buy one.

### Daikin Atmosphera R32 Mini Split Heat Pump

A high efficiency and very reliable wall-mounted mini split with the latest environmental-friendly R32 refrigerant gas and quality from Japan.

• Efficiency 27.4 SEER
• Operating temp. -13°F
• Warranty 12 years

### Midea U-Shaped Inverter Window Air Conditioner

A beautifully designed window air conditioner with the latest environmental-friendly R32 refrigerant gas that runs more quietly than most other window ACs.

### LG LV1419IVSM Portable Air Conditioner

Portable air conditioner recommended by 6 reputable reviewers. Low noise operation and high efficiency. More than 70% 5-star rating on Amazon.

• Low noise at 44 dB
• High efficiency
• 2022 best portable AC

Yu Chang Zhen

I enjoy working on air conditioners and ventilation fans because Malaysia is a very hot country.