AC Tonnage Calculator – What Size AC Do You Need?
Selecting an air conditioning tonnage is one of the most important decisions to help you achieve maximum comfort, energy efficiency, and long-term savings. Our AC Tonnage Calculator provides the best estimate of the tonnage (BTUs) required for your room or building using a proven HVAC electrical formula.
AC Tonnage Calculator
Why Is Tonnage Important?
Tonnage is the term used to define the cooling capacity of an air conditioning unit. 1 Ton equals 12,000 BTUs/hour. You do not want to install an AC unit that is too small as it will not cool your space and installing a unit that is too large may exceed comfort levels and can create high humidity and higher bills.
How to Calculate Tonnage?
We use the following key factors:
- Room Size (sq ft or sq m)
- Ceiling Height optional
- Location/Climate Zone
- Sunlight Exposure
- Number of People and Appliances
Key Features:
- Instant calculations with toggle (sq ft/m)
- Useable for house, apartment, office, or shop applications,
- Input for heat load factors can be adjusted,
- HVAC professionals use our calculator.
Pro Tips:
- Remember, if you're in hot & humid areas, you will need to add 0.5 Ton.
- If your ceiling is over 10 ft, it may benefit to add an additional 10-20% to your tonnage.
Final Thought:
If your AC is the improper size, you will waste energy and it will not perform to the right standard of cooling. Please use our free AC Tonnage Calculator and enjoy your cool comfort!
Frequently Asked Questions: FAQs
Q: What is 1 ton in air conditioning?
A: 1 ton is 12,000 BTU/hour to cool about 120 to 150 sq ft in a standard room.
Q: How much tonnage do I need for 250 sq ft?
A: You generally need a 1.5 Ton AC for that amount of space depending on sunlight entering the room and usage.
