The Many Choices with New Home Construction

When Your Furnace Won't Do Its Job: Is Your Furnace The Wrong Size?

Furnace repair contractors regularly deal with a variety of furnace issues, but one of the most common of these is furnaces that just won't heat the home properly. Although the problem may be that your furnace is at the end of its useful life span, there is also a chance that your home has the wrong size furnace to start with. Read on to find out why the right size really does matter when it comes to furnaces. 

The Original Furnace Installation: Was it Done the Right Way? 

Prior to the original furnace installation, a furnace repair contractor should have gathered some very specific information to determine what size furnace would be right for the home. 

  • Square Footage: The total square footage of the home, minus any auxiliary areas that don't need heating, for example garages.
  • Analysis of Insulation: The type and quantity of insulation in each area of the home.
  • Analysis of Air Entry Points: Even very well-constructed homes may have some type of air entry points aside from windows and doors. Chimneys and small cracks are common entry points for additional air. 

Using all of the information above, your furnace repair contractor will perform calculations using a British Thermal Units scale (Btu/hr) to determine exactly what size furnace will work best for the home. 

Why Are Those Furnace Calculations So Important? 

The furnace calculations are important because the furnace simply can't work properly - or at least to its full potential - if it's the wrong size for the home. 

  • Too Small: If the furnace is too small, it will continually have to work in an attempt to heat the whole home. Since a small furnace just can't effectively heat a large home, it will end up wasting energy in an attempt to do so. The strain of this constant use may shorten the life span of the furnace.
  • Too Large: When a furnace is overly large for the home, it will generally use far more energy than necessary by continually cycling. Although this will keep you warm, it may actually uncomfortably overheat the home before finally stopping. Some homeowners have to run their furnace fan near-constantly to combat this overheating. With so much heat being generated, an overly large furnace can result in sky-high energy bills.

Not Too Big, Not Too Small, But Just Right!

When your furnace is neither too big or too small, it will operate at its peak efficiency, which saves energy costs long term. Even better, when you buy a furnace of the proper size, you don't have to pay the unnecessary higher costs attached to a larger furnace. If your furnace just isn't doing its job, call a furnace repair contractor to find out whether the size is the problem! Continue reading more about heating and cooling to enhance your understanding and decision making.


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