How Do I Know It’s Time to Replace My Furnace?

October 20, 2020
Updated August 2023

You rely on your furnace to keep your home warm and comfortable throughout the winter. As with anything else, there comes a point when it needs to be replaced. How do you know when that point has been reached or even passed? Let’s discuss some signs that it’s time to shop for a new furnace.

It’s Over 15 Years Old

Furnaces live on average between 15 and 20 years. Once a furnace is older than 15 years, it typically begins to have costly breakdowns. This can be taken as a clear indication you’re better off replacing it.

When the repair will cost 50% or more than the value of replacement, you should install a new one. If the furnace is 20 years old, even a repair that’s just 10% of the replacement cost should prompt you to upgrade. It’s likely to soon need another repair.

Your Utility Bills Have Risen Dramatically

As furnaces get older, they become less energy efficient. Heating your home makes up a large portion of your utility bills, so this loss of efficiency can really cost you. Modern furnaces are highly energy-efficient, so you’ll see a large drop in your utility bills when you get a new unit.

You Experience Uneven Temperatures

If you have hot and cold spots in your house, it’s a sign your furnace isn’t delivering sufficient airflow. Too much heat is going into some rooms while not enough reaches others. This is an indication you need a new furnace.

You Notice Cracks or Corrosion

If you can see cracks or corrosion on your furnace, it needs to be replaced. If not dealt with, this can become a serious health hazard. The furnace could be leaking carbon monoxide into your home’s living space.

Murphy Company Heating & Cooling of Louisville, KY, has been installing furnaces since 1973. Our NATE-certified technicians also perform furnace repairs and tune-ups. In addition, we can replace, repair and maintain your air conditioning system. Our other services include indoor air quality solutions and ductless mini-splits. Please call us today to learn more about our work.

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