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HVAC Load Calculations

A Load Calculation determines the amount of heating and cooling power needed in your home or business. Space conditioning systems over 10 years old are often unreliable and much less efficient than a modern system. When upgrading your system, it is very important to choose the correct size for utmost efficiency, comfort and minimal maintenance.

It is very common for some HVAC contractors to oversize your heating or cooling systems. Oversizing causes the system to be inefficient by creating temperature swings and can also cost more to install. 

Key factors for correctly sizing a heating and cooling system include:

  • Local Climate


  • Insulation Levels
  • Size, Shape & Orientation of Home
  • Window Area, Location & Type
  • Air Infiltration Rates
  • Number of Occupants
  • Occupant Comfort Preferences
  • Types & Efficiencies of Lights
  • Major Home Appliances (which give off heat).

We offer the following Manual J/S/D services to help you and your customers:

  • HVAC Whole House Load Calculation
  • HVAC Room By Room Load Calculation for Residential Changeout Installation
  • HVAC Room By Room Load Calculation for Residential New Installation
     

A room by room calculation is best if both the central HVAC and the HVAC ducting need to be replaced.​