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Serving the greater Orlando area

24 hr Emergency Service


Serving the greater Orlando area

24 hr Emergency Service


The best Contractors we have had work with us in years. Polite, clean, thorough.

- J.

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What Factors Are Part of a Load Calculation?

There are a number of factors that need to be taken into account to properly heat and cool your home or business, but one of the most important of these factors is correct sizing. You may hear that all you need to know in order to correctly size and HVAC system for your home is the square footage; this simply isn’t true. Why? Every property gains heat throughout the day via a phenomenon known as heat gain, and daytime heat gain can increase the heat in your property up to 10 degrees. If you don’t account for this daytime heat gain, you could purchase and install an HVAC system that isn’t the right size. The heating and cooling experts at Downtown Air & Heat know how important it is to correctly size an HVAC system for any property, which is why we offer load calculating services in Orlando and the surrounding areas. If you are planning to install a new heating or cooling system, and need help, call us today!

Factors in a Load Calculation

No one really thinks about the various elements that may contribute heat to a given property, mostly because the focus on the main source of heating or cooling: the HVAC system. But there are a number of ways a property can gain heat:

  • Through exposed walls
  • Solar gain through windows
  • Conduction movement through doors and windows
  • Latent gains from electronics, lighting and people
  • Fireplaces

So, in order to properly calculate how daytime heat gain affects your property, the following items need to be considered:

  • The orientation of the property
  • The location
  • Climate
  • Types and number of windows and doors
  • Floorplan
  • Number of stories
  • Number of rooms
  • Number of occupants
  • Insulation levels
  • Square footage

Once all these factors have been determined, your technician can perform the calculation. The calculation will yield how much heating and cooling you’ll need, and as a result, what size HVAC system you’ll need.

A number of problems can develop when you install an HVAC system that is too big or too small for your home or business.

Contact the load calculation experts at Downtown Air & Heat today and schedule an appointment for your Orlando property!

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