Furnace Installation

How Much Space Should I Leave Open Around My Furnace?

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

Your furnace can get too hot if it doesn’t have enough room. It also makes it hard for our specialists to perform furnace repair.

Regular furnace maintenance is essential to keep your unit running well. An annually serviced furnace may heat more efficiently, which could decrease your energy expenses.

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

Maintenance often helps us notice issues before they begin. This could help lower future repair bills and likely extend the life of your furnace.

So how much room should your furnace really have?

How Much Space Does My Furnace Need?

If you’re updating your basement or enclosing your furnace room, you should research manufacturer specifications and Marshalltown ordinances for clearance requirements.

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

You also need to make sure the room has enough airflow and ventilation, especially if you have an older furnace with a metal flue.

Related: Furnace Service or Furnace Replacement: What to Consider

This kind of furnace draws combustion air from the adjacent area. If there’s inadequate air, unsafe gas fumes and poisonous carbon monoxide could leak into your home.

If your furnace is positioned in a little 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.

Uncertain if your furnace or water heater has enough ventilation? We can help!

Contact us

You don’t need to consider 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 pull in air.

Keep Combustible Materials Away from Your Furnace

Although furnace rooms function 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 in another room. Cat urine contains ammonia, which could corrode your furnace’s heat exchanger. Plus, the furnace could spread the smelly odors around your home.

You should also frequently clean by your furnace to stop dust from developing.

Related: Is it Time for Furnace Service or Replacement?

Request Expert Furnace Service 

Whether you want furnace replacement or regular maintenance in Marshalltown, Kapaun & Brown Inc. can expertly take care of your needs. Our highly trained technicians can work on any HVAC model or brand.

Call us at 641-753-3563 or use our online scheduler to get an appointment now.

Back To Blog