Refrigeration Tonnage Calculator — Accurate AC & Cooling Capacity Estimates

Refrigeration Tonnage Calculator

Calculate refrigeration tonnage, BTU requirements, and cooling capacity for your space. Get precise AC sizing and energy estimates for any room or building.

Step 1: Space Dimensions

Space Measurements

Accurate room dimensions are crucial for calculating proper refrigeration tonnage. Measure length, width, and height to determine total cubic volume.

Step 2: Cooling Requirements

Watts

About Refrigeration Tonnage

One ton of refrigeration equals 12,000 BTU/hr. Proper sizing prevents overworking your system and ensures energy efficiency. Oversized units cycle frequently, reducing efficiency.

Refrigeration Tonnage Calculation Results

Summary
Cooling Capacity
Energy Breakdown

Required Cooling Capacity

3.5 Tons
42,000 BTU/hr
Room Volume
3,000 ft³
Temperature ΔT
25°F
Recommended Unit
3-4 Ton AC
Estimated Monthly Cost
$85-120

Cooling Capacity Requirements

Basic Cooling Load
2.5 Tons
30,000 BTU/hr
Occupancy Load
0.5 Tons
6,000 BTU/hr
Equipment Load
0.3 Tons
3,500 BTU/hr
Safety Margin
0.2 Tons
2,500 BTU/hr

Sizing Recommendations

For optimal efficiency, select a unit within 0.5 tons of calculated requirement. Oversized units cycle frequently, reducing efficiency and increasing wear. Undersized units run continuously, struggling to maintain temperature.

Energy Consumption & Cost Breakdown

Tonnage Calculation Formula

Total Tons = (Volume × ΔT × Insulation Factor + Occupancy + Equipment Load) / 12,000

Calculate room volume in cubic feet. Multiply by temperature difference and insulation factor. Add occupancy and equipment heat loads. Divide by 12,000 BTU/ton to determine required tonnage.

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