We get it, when you see a professional Chicago HVAC company use the words “danger” and “heater” in the same post, it can be a little disconcerting! Not to worry though, heating systems—rather, gas-powered heating systems—are not inherently dangerous devices. This is something we must clear up right now—we don’t want you to feel like you’re constantly in danger just because you utilize your natural gas lines.
However, it’s extremely important for us to tell you that just like powerful appliances that create combustion gases, a furnace can potentially create health hazards if it is not properly maintained.
That being said, we want to warn you about the most common cause for a gas furnace (at least, an aging one—in most cases) to become unsafe—because of a cracked heat exchanger. When we say aging, we mean about 15 years old. If your system is nearing this age, we’d recommend looking into a replacement soon regardless of whether you have a cracked heat exchanger or not, as an aging heater simply can’t perform as efficiently as it did near the beginning of its lifespan.