HVAC Contractor helping a couple choose a furnace

What size furnace do I need?

When it’s time to upgrade your outdated furnace, it’s important to know that one size does not fit all. A system that is not sized properly for your home, will not only affect your comfort, but can mean a shortened life of your furnace, and leave you spending extra money on your utility bills.

If you select a furnace oversized for your house, you’ll start to run into short cycles. The reason is that your oversized furnace heated your home too rapidly, turning off before the furnace can reach the right operating temperatures. An undersized or oversized system can lead to decreased lifespan and cost you more in energy bills.

How can you be certain about the proper furnace size for your home? Get started with a load calculation from the professionals at Olde Towne Heating & Air. A load calculation takes specifics from your home into consideration and gauges the Btu (a number that indicates the heating capacity of a furnace) required to heat your space.

Some Factors that Influence Furnace Size

  • Square Footage—What size 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. Often, it is more beneficial to account only for the space that needs heating.
  • Home Insulation—Insulation works to keep warm air from filtering out of your home during the cold winter months. It also greatly affects energy efficiency and how large of a heating system is required. Let the team from Olde Towne Heating & Air take a look at the insulation in your walls and attic. They’ll help you select 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 influence your heating and cooling requirements.
  • Outdoor Climate—Consider the range of weather you experience in Mount Pleasant. You’ll want a furnace that can keep up with the conditions of your climate every year, without overworking itself.

Don’t settle for ‘close enough’ when picking your new furnace. Let the experts at Olde Towne Heating & Air help you pick a solution that will fit your home properly. When you’re ready to begin, call us at 843-485-0967 or schedule an appointment online. Whether you have a few more questions about furnace size or want to chat about options for your space, our team is happy to help you out.

Back To Blog