HVAC Contractor helping a couple choose a furnace

What size furnace do I need?

When you need to upgrade your outdated furnace, it’s important to realize one size does not fit all. A system that is not sized appropriately for your home, will not only hurt your comfort, but can mean a shortened life of your furnace, and leave you with larger energy costs.

If you choose a unit oversized for your space, you’ll start to notice short cycles. This is because your oversized furnace heated your home too fast, turning off before the furnace can reach the right operating temperatures. An undersized or oversized system can lead to shortened lifespan and bigger expenses.

How can you be certain about the correct furnace size for your home? Start with a load calculation from the professionals at Banister's Heating & Air Conditioning Services. 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 house.

Some Things that Influence Furnace Size

  • Square Footage—How big is the area your furnace will need to heat? The technician will be sure to carefully measure the square footage of your home. Not every inch of your home needs to be considered during this process. Often, it is more valuable to account only for the space that needs heating.
  • Home Insulation—Insulation works to keep warm air from leaving your home throughout the cold winter months. It also heavily affects energy efficiency and how large of a heating system will be necessary. Let the professionals from Banister's Heating & Air Conditioning Services take a look at 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 influence your heating and cooling requirements.
  • Outdoor Climate—Think about the range of weather you experience in Carlsbad. You’ll want a furnace that can handle the conditions of your climate every year, without overworking itself.

Don’t settle for ‘close enough’ when picking your new furnace. Let the professionals at Banister's Heating & Air Conditioning Services help you find a system that will fit your home properly. When you’re ready to start the process, you can reach us at 575-446-3948 or schedule an appointment online. Whether you have additional questions about furnace size or want to discuss options for your space, our team is happy to help you out.

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