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Why Is a Load Calculation Necessary for Heating Installation or Replacement?


When adding a new heating system to your home, whether as a brand new installation or a replacement, you can’t just choose a new system and have it installed. Why not? You’ll be missing a key step in the installation process: sizing. Correct sizing is critical for a number of reasons that we’ll explain more about below. To ensure that your new heating system is properly sized, you’ll want to work with an expert who can accurately calculate the heating load for your home. The pros from DB Heating & Cooling, Inc., can help you with the entire heating installation or replacement process, including the calculation of the heat load.

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What Is It?

A heat load calculation, also known as a Manual J, tells our technician exactly how much heat your home needs to be comfortable. A number of important factors are included in a Manual J calculation:

  • The number of windows and doors
  • The types of windows and doors
  • Level of insulation throughout the home
  • The orientation of the home
  • Daytime heat gain
  • Number of floors and occupants
  • Floorplan

Our technician will take all of these factors into account, calculate them and determine how much heat your home needs.

Why Is This Important?

Doing a proper heat load calculation ensures that you won’t purchase and install a heating system that is either too small for your home or too big. While it is pretty easy to understand how a too-small heating system can be an issue, many may puzzle over the idea that a heating system can be too big. Here’s why a system that is too large can be an issue. First, the system will overheat your home, creating an atmosphere that is too hot and too dry. Second, a system that heats too quickly is likely to short-cycle, meaning it will turn on and off constantly. Why? When your home heats too quickly it will also cool quickly. In turn, your heating system will constantly cycle on and off, which will excessively wear it out.

Ready for a new heating installation or replacement in Nanuet? Call the pros at DB Heating & Cooling, Inc., today!