What size furnace do I need?

January 31, 2019

When it’s time to replace your outdated furnace, it’s important to understand one size does not fit all.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 hurt your comfort, but can result in shortened life of your furnace, and leave you spending extra money on your utility bills.

If you select a furnace oversized for your home, 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 reduced lifespan and cost you more in energy bills.

How can you be sure you know the proper furnace size for your home? Get started with a load calculation from the team at TopTec Heating, Cooling, Plumbing & Electrical. A load calculation takes specifics from your home into review and gauges the Btu (a number that indicates the heating capacity of a furnace) needed to heat your house.

Some Items that Influence Furnace Size

  • Square Footage—What size is the area your furnace will need to heat? Your technician will be sure to carefully measure the square footage of your home. Not every inch of your home may be accounted for during this process. Usually, it is more useful to account only for the space that needs heating.
  • Home Insulation—Insulation assists in keeping warm air from leaving your home through the cold winter months. It also heavily affects energy efficiency and how large of a heating system you’ll need. Let the team from TopTec Heating, Cooling, Plumbing & Electrical evaluate the insulation in your walls and attic. They’ll help you choose the perfect furnace for your house.
  • Type of Window— Just like your walls, the specific type of windows in your home, frame type, glaze type, gas fills/spaces, etc. will influence your heating and cooling requirements.
  • Outdoor Climate—Factor in the range of weather you get in Libertyville. You’ll want a furnace that can sustain the conditions of your environment every year, without overworking itself.

Don’t settle for ‘close enough’ when choosing your new furnace. Let the professionals at TopTec Heating, Cooling, Plumbing & Electrical help you identify a unit that will fit your home properly. When you’re ready to start the process, contact us at 847-362-0262 or schedule an appointment online. Whether you have a few more questions about furnace size or want to chat about options for your space, we’re happy to help you out.