What size AC do I need for a 1000 sq ft house?
STEP 1: Determine how many BTUs of heating and tons of AC you need
| House Square Footage | BTUs Needed |
|---|---|
| 450 – 500 | 12,000 |
| 500 – 700 | 14,000 |
| 700 – 1,000 | 18,000 |
| 1,000 – 1,200 | 21,000 |
How do you size an air conditioner for a building or space?
Estimating Your Ideal A/C Size
- Calculate the square footage of the space (building or group of rooms) you want to cool.
- Divide the space’s square footage by 500.
- Multiply the number from Step 2 and by 12,000.
- Add 380 Btu for each person who works in the space all day.
- For each window in the space, add 1,000 Btu.
How big of an AC unit do I need for 1, 500 sq ft?
To properly get the tonnage of the AC you need, you can use the AC tonnage calculator here: For example, a standard 1,500 sq ft house would need a 2.5-ton air conditioner. To help us out, here is a quick table showing how many tons (and BTU) air conditioners we need for certain square footage:
How much air conditioner tonnage per square foot?
According to the DOE, “…an air conditioner generally needs 20 BTU for each square foot of living space.” We need to convert BTU to tonnage. 1 ton equals 12,000 BTU. That means that, on average, we will need 0.0016 tons per square foot.
How big is an average commercial air conditioner?
Air conditioner size is rated in tons and the sizes available increase in 1/2-ton increments. The average commercial A/C size ranges from 2 tons for small buildings to as much as 30 tons for very large buildings. A 1-ton air conditioner can remove around 12,000 Btu, or British Thermal Units, of heat per hour.
How is the size of an AC unit determined?
Consequently, AC sizing involves determining the home’s cooling load: the exact capacity in BTUs per hour and cubic feet per minute of airflow required to maintain a 78 degree temperature in the house. Residential central air conditioners range in size from 1.5 to 5 tons. Unit sizes go up in half ton increments:
To properly get the tonnage of the AC you need, you can use the AC tonnage calculator here: For example, a standard 1,500 sq ft house would need a 2.5-ton air conditioner. To help us out, here is a quick table showing how many tons (and BTU) air conditioners we need for certain square footage:
According to the DOE, “…an air conditioner generally needs 20 BTU for each square foot of living space.” We need to convert BTU to tonnage. 1 ton equals 12,000 BTU. That means that, on average, we will need 0.0016 tons per square foot.
How big does a commercial air conditioner need to be?
If you have a 5,000-square-foot space, divide that number by 500 to get 10. 10 times 12,000 is 120,000 Btu. If four people work there, add 1,520 (380 Btu x 4). If the space has three windows, add 3,000 (1,000 Btu x 3). This space will need a commercial A/C size with 124,520 Btu of cooling.
How many BTUs do I need for an AC unit?
STEP 1: Determine how many BTUs of heating and tons of AC you need House Square Footage BTUs Needed 100 – 150 5,000 150 – 250 6,000 250 – 300 7,000 300 – 350 8,000
