A furnace that is too big will cause hot and cold spots in your home

Purchasing a modern oil furnace is a substantial decision since there are plenty of choices on the market this week, including different models, makes, and brands, available features and technologies, oil furnace types, and efficiency rating.

One of the most crucial things you will have to figure out before you buy your furnace is what size you need for your attic. Sizing a furnace does not only entail calculating the square footage of your home, and there are many things you have to consider when sizing a furnace for your attic. Generally, a HVAC system that is too big for your house will cycle frequently, creating cold and hot spots throughout your home, impacting efficiency, creating repair issues, and reducing the life duration of your furnace. A very small furnace will run continuously without achieving your desired temperature. The increased workload will raise your energy costs, create repair problems, and prematurely cut short the repair life of your unit. A furnace’s size is related to its heating output and how much heat it can produce, and furnace output is often measured in British Thermal Units (BTUs) per hour. BTU is an energy measurement, particularly the amount of energy needed to increase 1 pound of water by 1F. One of the major factors that will influence your furnace size is the size of your home, particularly how much square footage of space needs to be heated. Besides that, consider your region’s temperature, your home’s style and orientation, the number of exterior walls in your home, the quality and thickness of your insulation, the number of doors and windows you have, your furnace efficiency rating, and the state of your air duct.


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