How Much Space Should I Leave Open Around My Furnace?

November 05, 2019

Natural gas furnaces need adequate space and airflow to run right.

Your furnace can overheat if it doesn’t have enough space. It also makes it difficult for our professionals to complete furnace repair.

Routine furnace maintenance is essential to keep your system operating trouble-free. A regularly serviced furnace may work more efficiently, which could reduce your energy costs.

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

Maintenance often helps us spot troubles before they start. This could help lessen future repair bills and likely extend the life of your system.

So how much area should your furnace really have?

How Much Space Does My Furnace Need?

If you’re finishing your basement or enclosing your furnace room, you should consult manufacturer specifications and Booneville statutes for clearance requirements.

As a general rule of thumb, your system should be 30 inches away from furnace room walls on all sides. This permits our service experts to comfortably repair it.

You also need to check the space has ample airflow and ventilation, especially if you have an outdated furnace with a metal flue.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 draws combustion air from the nearby location. If there’s inadequate air, dangerous gas fumes and poisonous 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 install supplemental openings. This could involve a fully louvered door or vents in the walls.

Uncertain if your furnace or water heater has proper ventilation? We can take a look!

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You don’t need to consider airflow and ventilation as much if you have a newer, high-efficiency furnace with PVC piping. Your system uses one pipe as an exhaust vent and the other to draw in 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 things 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, put your litter box elsewhere. Cat urine contains ammonia, which could corrode your furnace’s heat exchanger. Plus, the furnace could circulate the smelly odors around your home.

You should also regularly sweep by your furnace to block dust from accumulating.

Related: Is it Time for Furnace Service or Replacement?

Request Expert Furnace Service 

Whether you have to have furnace replacement or routine maintenance in Booneville, Booneville Heating & Cooling LLC can expertly meet your needs. Our highly trained technicians can work on any HVAC model or brand.

Call us at 662-269-8716 or use our online scheduler to get an appointment now.