How Much Space Should I Leave Open Around My Furnace?

November 05, 2019

Natural gas furnaces need sufficient space and airflow to work correctly.

Your furnace can overheat if it doesn’t have enough clearance. It also makes it difficult for our specialists to perform furnace repair.

Annual furnace maintenance is crucial to keep your unit running trouble-free. An annually serviced furnace may heat more efficiently, which could reduce your energy costs.

Related: How Does Furnace Maintenance Impact the Energy Efficiency of Your Home?

Maintenance often helps us discover issues before they begin. This could help reduce future repair expenses and likely prolong the life of your furnace.

So how much room should your equipment really have?

How Much Space Does My Furnace Need?

If you’re remodeling your basement or closing off your furnace room, you should research manufacturer instructions and Grand Prairie laws for clearance rules.

As a general suggestion, your furnace should be 30 inches away from furnace room walls on all sides. This permits our service professionals to comfortably repair it.

You also need to check the area has ample airflow and ventilation, especially if you have an outdated furnace with a metal flue.

Related: Furnace Service or Furnace Replacement: What to Consider

This kind of furnace needs combustion air from the nearby area. If there’s insufficient air, hazardous gas fumes and deadly carbon monoxide could flow back into your home.

If your furnace is positioned in a tiny room with a gas water heater, you may need to put in more openings. This could consist of a fully louvered door or vents in the walls.

Not sure if your furnace or water heater has proper ventilation? We can help!

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You don’t need to assess airflow and ventilation as much if you have a up-to-date, high-efficiency furnace with PVC piping. Your unit uses one pipe as an exhaust vent and the other to add air.

Keep Combustible Materials Away from Your Furnace

Although furnace rooms are often also used for laundry and storage space, you should keep yours free of clutter that could be fire hazards.

This includes:

  • Clotheslines
  • Cleaning or laundry products
  • Gasoline, paint or paint thinner
  • Rags and papers
  • Wood scraps and sawdust
  • Used filters

If you have a cat, place your litter box in another room. Cat urine contains ammonia, which could corrode your furnace’s heat exchanger. Plus, the furnace could spread the stinky odors around your home.

You should also regularly sweep near your furnace to stop dust from developing.

Related: Is it Time for Furnace Service or Replacement?

Request Expert Furnace Service 

Whether you need furnace replacement or regular maintenance in Grand Prairie, Bon Air Service Company can expertly meet your needs. Our highly trained technicians can work on any HVAC model or brand.

Call us at 972-332-1028 or use our online scheduler to get an appointment right away.