Furnace Installation

How Much Space Should I Leave Open Around My Furnace?

Natural gas furnaces need adequate space and airflow to heat correctly.

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

Routine furnace maintenance is important to keep your system operating smoothly. A routinely serviced furnace may work more efficiently, which could lower your heating costs.

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

Maintenance often helps us notice problems before they start. This could help lessen future repair expenses and potentially extend the life of your unit.

So how much area should your equipment really have?

How Much Space Does My Furnace Need?

If you’re updating your basement or closing off your furnace room, you should consult manufacturer instructions and St. Louis statutes for clearance guidelines.

As a general recommendation, your heater 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You also need to make sure the room has plentiful airflow and ventilation, especially if you have an outdated furnace with a metal flue.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 kind of furnace draws combustion air from the surrounding location. If there’s inadequate air, hazardous gas fumes and toxic carbon monoxide could leak into your home.

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

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

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You don’t need to consider airflow and ventilation as much if you have a modern, high-efficiency furnace with PVC piping. Your unit uses one pipe as an exhaust vent and the other to pull 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 somewhere else. Cat urine contains ammonia, which could deteriorate your furnace’s heat exchanger. Plus, the furnace could spread the stinky odors around your home.

You should also routinely sweep by your furnace to stop dust from building up.

Related: Is it Time for Furnace Service or Replacement?

Request Expert Furnace Service 

Whether you need furnace replacement or routine maintenance in St. Louis, Morgner Inc. Air Conditioning & Heating can expertly handle your needs. Our highly trained technicians can fix any furnace model or brand.

Call us at 314-262-4541 or use our online scheduler to get an appointment now.

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