HVAC Contractor helping a couple choose a furnace

What size furnace do I need?

When you need to update your outdated furnace, it’s important to understand one size does not fit all. A system that is not sized appropriately for your home, will not only impact your comfort, but can result in shortened life of your furnace, and leave you stuck with higher energy bills.

If you select a unit oversized for your house, you’ll start to experience short cycles. This means your oversized furnace heated your home too fast, turning off before the furnace can reach correct operating temperatures. An undersized or oversized system can lead to shortened lifespan and higher costs.

How can you be sure you know the right furnace size for your home? Begin with a load calculation from the experts at US Air Heating and Cooling. A load calculation takes specifics from your home into account and gauges the Btu (a number that indicates the heating capacity of a furnace) required to heat your space.

Some Things that Influence Furnace Size

  • Square Footage—How large is the area your furnace will have to heat up? The technician will be sure to carefully measure the square footage of your home. Not every inch of your home may be considered during this process. Many times, it is more useful to account only for the space that needs heating.
  • Home Insulation—Insulation helps keep warm air from leaving your home during the cold winter months. It also heavily affects energy efficiency and how large of a heating system is required. Let the team from US Air Heating and Cooling review the insulation in your walls and attic. They’ll help you choose the ideal furnace for your house.
  • Type of Window— Just like your walls, the particular type of windows in your home, frame type, glaze type, gas fills/spaces, etc. will have an impact on the heating and cooling needs of your home.
  • Outdoor Climate—Consider the range of weather you receive in Rock Hill. You’ll want a furnace that can handle the conditions of your environment every year, without overworking itself.

Don’t settle for ‘close enough’ when picking your new furnace. Let the experts at US Air Heating and Cooling help you identify a system that will fit your home properly. When you’re ready to begin, call us at 803-220-0761 or book an appointment online. Whether you have some questions about furnace size or want to chat about options for your space, our experts are happy to help you out.

Back To Blog