Heat Load Calculator

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Hold Ctrl (Windows) or Command (Mac) to select multiple items

Results

  • Heating Load: 0 BTU/hr
  • Cooling Load: 0 BTU/hr
  • Recommended HVAC Size: 0 tons
  • Annual Energy Cost: $0

Understanding Heat Load

Heat load calculations are crucial for proper HVAC system sizing.

  • Heating Load Winter requirements.
  • Cooling Load Summer requirements.
  • Internal Gains Equipment and occupants.
  • External Factors Climate and insulation.

Design Considerations

Insulation

R-value impact.

Windows

Solar heat gain.

Occupancy

Internal heat load.

Equipment

Heat generation.

HVAC Sizing Guide

  • Undersized Insufficient comfort.
  • Oversized Energy waste.
  • Optimal Balanced efficiency.
  • Zoning Area requirements.

Energy Efficiency Tips

  • Insulation Proper R-values.
  • Windows Energy efficient glass.
  • Ventilation Air exchange.
  • Controls Smart thermostats.