How Much Space Should I Leave Open Around My Furnace?

November 05, 2019

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

Your furnace can get too hot if it doesn’t have enough clearance. It also makes it difficult for our technicians to accomplish furnace repair.

Routine furnace maintenance is essential to keep your equipment working trouble-free. A regularly serviced furnace may work more efficiently, which could lower your energy bills.

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

Maintenance often helps us spot problems before they start. This could help lessen future repair costs and possibly prolong the life of your system.

So how much clearance should your furnace really have?

How Much Space Does My Furnace Need?

If you’re remodeling your basement or closing off your furnace room, you should take a look at manufacturer specifications and Muldrow laws for clearance requirements.

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

You also need to ensure the room has ample airflow and ventilation, especially if you have an aging furnace with a metal flue.

Related: Furnace Service or Furnace Replacement: What to Consider

This model of furnace draws combustion air from the nearby space. If there’s inadequate air, dangerous gas fumes and deadly carbon monoxide could back draft into your home.

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

Not sure if your furnace or water heater has adequate ventilation? We can assist you!

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

Keep Combustible Materials Away from Your Furnace

Although furnace rooms double as laundry and storage space, you should keep yours free of items 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, situate your litter box elsewhere. Cat urine contains ammonia, which could deteriorate your furnace’s heat exchanger. Plus, the furnace could spread the stinky odors all over your home.

You should also regularly clean around your furnace to prevent dust from accumulating.

Related: Is it Time for Furnace Service or Replacement?

Request Expert Furnace Service 

Whether you have to have furnace replacement or regular maintenance in Muldrow, Air Service Co. can expertly handle your needs. Our highly trained technicians can repair any furnace model or brand.

Call us at 918-212-8943 or use our online scheduler to get an appointment today.