Are you hearing loud noises coming from your furnace? Wondering whether you should shut it off? In many cases, the safest answer is ‘yes’. Shutting it off immediately can prevent system damage and serious safety risks.
Below, this heating repair contractor in Glenview, Illinois is going to explain when furnace noises are harmless, and when it’s time to shut the system off and call a professional for help.
Most furnaces have a very normal sound profile. And once you have lived with one for a while, you usually get used to it. You may hear a soft hum while it runs or a quiet click as the system cycles on and off.
But if your furnace is suddenly loud or it seems like it is slowly getting louder, that’s not something you want to ignore. A furnace is a mechanical unit with electrical components and, in many homes, gas combustion. When it starts rattling, shaking, banging, scraping, screeching or grinding, it could point to a part being loose or faulty.
Furnace noise problems tend to get worse over time. The longer the system runs while something is wrong, the more likely it is that the problem will spread and start damaging other components too. That is how a relatively simple repair can turn into a much more expensive breakdown.
So, if your furnace is making weird or loud noises, contact a heating repair contractor in Glenview, Illinois as soon as possible.
If the noise is sudden and too loud, it is usually best to shut the furnace off immediately. That can prevent additional damage and may even reduce the risk of a dangerous situation.
Turn the thermostat off first to stop the furnace from continuing to run. If you still hear noise coming from the unit, use the emergency shutoff switch near the furnace or turn the system off at the breaker.
If you feel unsafe at any point, you can also shut off the gas valve to the furnace. But only do this if you are confident, you know what you are doing. If you are not 100% confident, it is better to leave it alone and call a professional.
Also keep in mind that carbon monoxide (CO) is odorless. You can’t rely on smell to know there is a problem. If your furnace is acting strangely and you notice symptoms like headaches, dizziness, nausea, or fatigue, or if your carbon monoxide detector goes off, leave the home and call emergency services immediately.
It is strongly recommended that you don’t keep restarting a noisy furnace just to see if the sound goes away. Restarting the system repeatedly can make the system more inefficient. If the issue involves ignition or overheating, turning it back on can add extra stress to parts that are already struggling. And that can lead to a bigger breakdown.
It is also not a good idea to poke around inside the furnace. Furnaces contain electrical wiring and built-in safety switches. Opening panels or moving things around without experience can cause injury or create an unsafe situation (even if your intention is just to take a quick look).
That said, there are two basic checks that most homeowners can safely do without risking damage or injury.
The first is checking your air filter. A clogged filter restricts airflow and can contribute to strange noises. The second is making sure that vents and returns are not blocked by anything.
To be on the safer side, it is best to contact a heating repair contractor in Glenview, Illinois as soon as you notice a problem with your furnace. Addressing the issue early is almost always easier and less expensive than waiting for the furnace to stop working completely.
If your furnace is making loud noises, our team at John J. Cahill Plumbing, Heating & Air Conditioning is here to help. As the top-rated heating repair contractor in Glenview, Illinois, our team can diagnose the problem fast, restore safe heating, and help prevent costly breakdowns. Contact us to learn more.