1. What is AC Tonnage?

AC tonnage refers to the cooling capacity of an air conditioning system. One ton of cooling equals 12,000 BTU per hour. Proper sizing is crucial for efficient cooling and energy savings.

2. How Does the Calculator Work?

The calculator uses the standard formula:

Where:

• AC Tonnage — Cooling capacity in tons
• 600 sq ft/ton — Standard coverage area per ton of cooling

Explanation: This formula provides an approximate guideline for matching AC capacity to room size based on standard HVAC calculations.

3. Importance of Proper AC Sizing

Details: Proper AC sizing ensures optimal cooling efficiency, prevents short cycling, reduces energy costs, and extends equipment lifespan. Oversized or undersized units can lead to comfort issues and higher operating costs.

4. Using the Calculator

Tips: Enter the AC tonnage (e.g., 1.0, 1.5, 2.0) to calculate the recommended room size. This is a general guideline - actual requirements may vary based on insulation, climate, and other factors.

5. Frequently Asked Questions (FAQ)

Q1: Why 600 square feet per ton?
A: This is a standard industry guideline for moderate climates. Hotter climates may require 400-500 sq ft per ton, while cooler climates may allow 700-800 sq ft per ton.

Q2: What factors affect AC sizing?
A: Climate zone, insulation quality, window area, ceiling height, sun exposure, and number of occupants all impact AC sizing requirements.

Q3: Can I use this for central AC systems?
A: Yes, this calculation works for both window units and central AC systems, though professional Manual J calculation is recommended for whole-house systems.

Q4: What if my room has high ceilings?
A: Rooms with high ceilings (over 8 feet) may require additional cooling capacity. Multiply the square footage by (ceiling height/8) to adjust.

Q5: Should I round up or down when choosing AC size?
A: It's generally better to slightly undersize than oversize to prevent short cycling. Consult with an HVAC professional for precise sizing.