HVAC Design and Engineering
This AC size calculator.
This calculator is provided for use to calculate basic size in BTU to adequately cool a room of know size.
The sizing chart below the calculator is useful to help you determine your approximate air conditioner size requirement in Tons.
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Preview Calculator AC Required Preview
Estimated Air Conditioning Required in Tons based on Square Footage
Tons |
Zone 1 |
Zone 2 |
Zone 3 |
Zone 4 |
Zone 5 |
1.5 |
600 - 900 sf |
600 - 950 sf |
600 - 1000 sf |
700 - 1050 sf |
700 - 1100 sf |
2 |
901-1200 sf |
951 - 1250 sf |
1001 - 1300 sf |
1051 - 1350 sf |
1101 - 1400 sf |
2.5 |
1201 - 1500 sf |
1251 - 1550 sf |
1301 - 1600 sf |
1351 - 1600 sf |
1401 - 1650 sf |
3 |
1501 - 1800 sf |
1501 - 1850 sf |
1601 - 1900 sf |
1601 - 2000 sf |
1651 - 2100 sf |
3.5 |
1801 - 2100 sf |
1851 - 2150 sf |
1901 - 2200 sf |
2001 - 2250 sf |
2101 - 2300 sf |
4 |
2101 - 2400 sf |
2151 - 2500 sf |
2201 - 2600 sf |
2251 - 2700 sf |
2301 - 2700 sf |
5 |
2401 - 3000 sf |
2501 - 3100 sf |
2601 - 3200 sf |
2751 - 3300 sf |
2701 - 3300 sf |
sf = Square Foot
Zone 1 = Red
Zone 2 = Orange
Zone 3 = Yellow
Zone 4 = Green
Zone 5 = Blue
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