1. What is Tons in HVAC?

In HVAC, a "ton" is a unit of cooling capacity equal to 12,000 BTU per hour. It originates from the amount of heat needed to melt one ton of ice in 24 hours.

2. How Does the Conversion Work?

The conversion formula is simple:

Where:

• 1 Ton = 12,000 BTU/h
• BTU/h — British Thermal Units per hour (heat removal rate)

Explanation: This conversion helps HVAC professionals size cooling systems appropriately for buildings.

3. Importance of Proper Sizing

Details: Correct tonnage calculation ensures efficient operation, proper humidity control, and prevents short-cycling of equipment.

4. Using the Calculator

Tips: Enter the BTU/h rating from your equipment specifications or load calculation. The calculator will convert to tons of cooling capacity.

5. Frequently Asked Questions (FAQ)

Q1: How many BTU/h are in 1.5 tons?
A: 1.5 tons = 18,000 BTU/h (1.5 × 12,000)

Q2: What's typical for residential systems?
A: Most homes need 1-5 tons (12,000-60,000 BTU/h), depending on size and climate.

Q3: Why is proper sizing important?
A: Oversized units cycle too frequently, reducing efficiency and dehumidification. Undersized units can't maintain temperature.

Q4: Is this the same as refrigeration tons?
A: Yes, the ton measurement is the same in refrigeration and air conditioning.

Q5: What factors affect tonnage requirements?
A: Square footage, insulation, windows, climate, occupancy, and heat-producing appliances all affect cooling load.