1. What is HVAC Tonnage?

HVAC tonnage refers to the cooling capacity of an air conditioning system. One ton of cooling equals 12,000 BTU (British Thermal Units) per hour. This measurement originated from the amount of heat needed to melt one ton of ice in 24 hours.

2. How Does the Calculator Work?

The calculator uses the simple formula:

Where:

• \( Tons \) — Cooling capacity in tons
• \( BTU/h \) — British Thermal Units per hour

Explanation: The formula converts BTU per hour (a measure of heat transfer rate) into equivalent tons of cooling capacity.

3. Importance of Proper Tonnage Calculation

Details: Correctly sizing an HVAC system is crucial for energy efficiency and comfort. An undersized unit won't cool properly, while an oversized unit will short-cycle, reducing efficiency and lifespan.

4. Using the Calculator

Tips: Enter the BTU/h rating of your HVAC unit (found on the nameplate or specification sheet). The calculator will instantly convert it to tons.

5. Frequently Asked Questions (FAQ)

Q1: How many square feet will 1 ton cool?
A: Approximately 400-600 sq ft in moderate climates, but this varies based on insulation, climate, and other factors.

Q2: What's the difference between BTU and tons?
A: Tons are simply a larger unit of cooling capacity (1 ton = 12,000 BTU/h). Tons are commonly used for residential systems.

Q3: How do I find my unit's BTU rating?
A: Check the manufacturer's label on the outdoor condenser unit or consult the product specifications.

Q4: What's a typical tonnage for a house?
A: Most homes range from 1.5 to 5 tons, with average being about 3 tons for a 2,000 sq ft home.

Q5: Can I use this for heat pumps?
A: Yes, the calculation works the same for heat pumps in cooling mode.