4 Signs You Have a Failing Furnace: When to Replace It?

A furnace is a heating unit designed to warm your home space during the cold months. It works by producing heat in one component and distributing it to different parts of your house through vents and ducts. However, the time will come when it starts to deteriorate and eventually break down. For this reason, you must come prepared and ready by looking for signs that your furnace finally needs to be replaced.

Here at Legacy Heating, we have been providing the most comprehensive and cost-effective HVAC services in Edmonton and Calgary and surrounding areas for many decades now. If you’re looking to replace your old furnace and install a new one, we’ve got you covered!

In this article, we will share four signs showing that you have a failing furnace so that you can prepare for its actual replacement:

1. It releases cold air

There is nothing more annoying than a furnace producing and releasing cold air. When this happens, it defeats the purpose of having one in the first place because your furnace is supposed to make heat and warm your home. During such circumstances, you may want to check the thermostat and its components, such as the motor in the blower fan, heat exchanger, or pilot light. If one or some of them are completely damaged, you may need to replace your furnace.

2. It produces irregular noises

It’s quite normal for your HVAC system, particularly your furnace, to make some noises. They simply mean that your system is running and working. However, when you start hearing irregular sounds, such as popping, squeaking, banging, or rattling, they may paint a different picture. As such, be sure to inspect your heating unit and replace it when necessary, as the last thing you want is a malfunctioning furnace that can compromise the safety of your family!

3. It has increased your energy bills

When your monthly energy bill suddenly spikes, there are many possibilities for this occurrence. One of these is when you have a failing furnace. The chances are that it is no longer working properly and efficiently due to some damages to its parts or components. Be sure to get your furnace inspected by our professional technician at Legacy Heating to see whether you can still fix it or you need to repair it.

4. It has been old and outdated

Age is a key factor in deciding whether or not you must install a new furnace. Keep in mind that the average life expectancy of a furnace ranges from 15 years to 30 years. If your furnace has long been with you and your family, it may already be old and outdated, so you can expect several issues to surface over the years. Even if it receives regular cleaning and maintenance, it will eventually end and require a replacement!


At this point, we’ve covered five signs showing that you have a failing furnace—cold air, irregular noises, increased energy bills, and old age. When faced with one or some of these signs, be sure to work with the professional to see if you can still fix it or you’ll finally need to replace it. Ultimately, your furnace must be in top shape and working order for your heating needs and the utmost comfort at home!

The experts at Legacy Heating provide heating and air conditioning services in Calgary and Edmonton, such as HVAC repair, replacement, and maintenance. If you’re looking for an HVAC contractor to repair or replace your furnace, get in touch with us today to book an appointment!

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