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When it’s time to upgrade your outdated furnace, it’s important to realize one size does not fit all.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 lead to shortened life of your furnace, and leave you stuck with higher energy bills.

If you choose a system oversized for your space, you’ll start to run into short cycles. This is because your oversized furnace heated your home too quickly, turning off before the furnace can reach proper operating temperatures. An undersized or oversized system can lead to decreased lifespan and cost you more in energy bills.

How can you be sure you know the correct furnace size for your home? Begin with a load calculation from the experts at Airmax Long Island Inc. A load calculation takes aspects 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—What size is the area your furnace will have to heat up? Your technician will be sure to carefully measure the square footage of your home. Not every inch of your home will be included during this process. Many times, it is more useful to account only for the space that needs heating.
  • Home Insulation—Insulation works to keep warm air from escaping 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 Airmax Long Island Inc evaluate 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 Suffolk/Nassau County. You’ll want a furnace that can sustain the conditions of your climate every year, without overworking itself.

Don’t settle for ‘close enough’ when selecting your new furnace. Let the qualified technicians at Airmax Long Island Inc help you find a unit that will fit your home properly. When you’re ready to begin, you can reach us at 631-737-5566 or arrange 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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