Heat Load Calculations

Heat Load Calculations in Low Country, South Carolina

Maximizing the energy efficiency of your home is the goal of every cost-conscious homeowner. Matching the proper-sized HVAC unit to your home can be a complicated process, however. You must calculate the required heat load for your home based on the climate zone where you live, the number of residents and the square footage of the structure.

That means choosing the right HVAC system for your home is not simply a bigger-is-better proposition, as many homeowners believe. Purchasing an oversized system will cause the unit to short-cycle, which can create damage. An undersized unit will run constantly, causing it to wear down prematurely while failing to reach desired indoor temperaturs on extremely hot or cold days.

The solution is to calculate an accurate number of BTUs (British Thermal Units) needed to heat and cool your home and find an HVAC system that corresponds to those figures. That number, called the heat load, factors in 600 BTUs per resident. A homeowner should divide the heat load by the cooling capacity of the AC unit in BTUs to determine how many air conditioners are needed to climatize the home.

Experts from Ocean Air Cooling & Heating can help you calculate the heat load of your South Carolina home to maximize its energy efficiency. Example: A 2,000-square foot home in a climate zone with a heating factor of 40 BTUs per square foot requires a furnace with an output of 80,000 BTUs per hour.

It's a very precise formula. It's one every homeowner should understand before selecting an HVAC unit with the proper SEER rating to service his or her home for decades to come.

Inside the Heat Load Numbers

Unique circumstances can skew the formula to calculate the heat load at your home. If you have excess shade, a non-vented attic, heavy air infiltration or a variety of different insulation materials, these factors will alter your heat load. Homes with such conditions require the input of an experienced professional like our certified experts at Ocean Air Cooling & Heating to calculate an accurate heat load.

Without that information, which we will provide in a detailed heat-load anaylsis, it is impossible to zero in on the right HVAC system for your home. Accurate heating and cooling load calculations are essential to identify the proper size and type of system for your home.

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Choosing the wrong unit could lead to higher utility bills, poor indoor air quality, noisy operations, frequent repairs and an inability to maintain proper moisture control inside the home. You may wind up needing to add a humidifier or a dehumidifier to your home if you install the wrong system.

Let Us Calculate the Many Variables

Other variables needed to calculate your home's heat load include the climate zone of the residence, the size of the house and its directional orientation. Homes with multiple windows that face east or west will absorb more direct sunlight, increasing their heat loads. The U-value of your windows also will impact your heat load.

There are enough variables to create confusion for many homeowners. It's best to receive guidance from one of our experts in Low Country, South Carolina to make sure you select the proper system for your home.

We Can Determine the Heat Load in Your Home

It's essential to know the heat load in your home before picking the proper HVAC unit. Ocean Air Cooling & Heating has been providing those numbers to South Carolina homeowners for many years. Contact us online or call us at 843-508-2620 to get a free estimate or learn more about our stellar HVAC services.


Systems We Serve

  • ruud
  • rheem
  • goettl
  • westinghouse
  • trane
  • carrier
  • lennox
  • bryant
  • amana
  • goodman
  • york
  • comfortmaker
  • heil
  • american standard
  • coleman
  • tempstar