How Much Space Should I Leave Open Around My Furnace?

November 05, 2019

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

Your furnace can shut down if it doesn’t have enough clearance. It also makes it challenging for our professionals to perform furnace repair.

Routine furnace maintenance is crucial to keep your system working well. An annually serviced furnace may work more efficiently, which could reduce your heating expenses.

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

Maintenance often helps us discover troubles before they start. This could help reduce future repair costs and likely prolong the life of your unit.

So how much room 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 research manufacturer directions and Montoursville ordinances for clearance rules.

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

You also need to make sure the area has plentiful airflow and ventilation, especially if you have an outdated furnace with a metal flue.

Related: Furnace Service or Furnace Replacement: What to Consider

This model of furnace needs combustion air from the adjacent location. If there’s inadequate air, dangerous gas fumes and toxic carbon monoxide could leak into your home.

If your furnace is located in a small room with a gas water heater, you may need to add extra openings. This could include a fully louvered door or vents in the walls.

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

Contact us

You don’t need to think about 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 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 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, place your litter box in another room. Cat urine contains ammonia, which could corrode your furnace’s heat exchanger. Plus, the furnace could circulate the unpleasant odors around your home.

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

Related: Is it Time for Furnace Service or Replacement?

Request Expert Furnace Service 

Whether you want furnace replacement or regular maintenance in Montoursville, Airmen HVAC Service can expertly take care of your needs. Our highly trained technicians can work on any HVAC model or brand.

Call us at 570-322-3131 or use our online scheduler to set up an appointment right away.