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Why Won’t My Furnace Turn On?

It’s that time of year again – the leaves are changing color and falling, everyone is starting to break out their light jackets, and furnaces across Ogden are being switched to “on.” For some unlucky homeowners, however, their furnace won’t turn on. If your furnace keeps going off or just won’t turn on altogether, here are some things you can do to remedy the issue.

Problem: My furnace will not turn on

If you find that your furnace is not starting, there could be a number of things wrong with it. The first thing to do is check your thermostat and make sure it’s functioning properly. Test it out by turning it to “heat” and setting it to 10 degrees above the current room temperature. A lot of thermostats have a delay of a few minutes, so give it a few minutes to turn on. If your thermostat isn’t working at all, call in a professional to fix the issue, and you should be back in furnace action.

If your furnace won’t ignite, be sure to check the pilot light. As a safety feature, many modern furnaces won’t turn on without a pilot light. This ensures you’re not just pumping gas into your home. If this doesn’t do the trick, check the air filter as well. If the air filter is past its prime, then your system could be clogged, causing your furnace to not turn on as another safety feature.

If none of these do the trick, then it’s time to call in the pros. Chances are, you don’t want to sit around in your cold home, tinkering with your furnace for days. A professional can get to the bottom of the issue quickly and get your furnace back up and running in no time!

Problem: My furnace is turning on and off

If your furnace keeps going out, it could be short-cycling. Short-cycling is not good for you or your furnace because it can lead to your furnace needing repairs or breaking down, and it also raises your energy bills. Luckily, there are a few things you can do to try to fix your furnace’s short-cycling.

Another common reason is a dirty air filter. Earlier, we mentioned that a dirty air filter can clog up your system, therefore keeping your furnace off as a safety measure. A dirty air filter can also cause your furnace to cycle on and off frequently. Change out the air filter and see if the issue resolves itself. Then, be sure to replace your air filter about every 30 days.

As with a furnace that won’t turn on, a common culprit here is your thermostat. If it’s not functioning properly or if it’s placed in direct sunlight, it can be causing your furnace to turn on and off.  A seasoned HVAC professional can fix your thermostat for you so your furnace can get back to normal functionality.

If you’ve addressed those two issues and your furnace keeps going out, then check with a professional to makes sure your furnace is the right size. If your furnace is too big for your home, that could be why it keeps turning on and off. Unfortunately, the solution for this issue is a furnace replacement.

Short-cycling is not good for your wallet or your furnace, so call in an HVAC professional to assess the issue if you can’t get it resolved on your own.

Preventing Future Furnace Issues

If you want to avoid encountering a faulty furnace when the cold weather kicks in, the best course of action is a routine maintenance check. During a maintenance visit, an HVAC professional will make sure that your furnace is still working as it should and there’s nothing that needs to be repaired. If they do find something, they can fix it on the spot, before it becomes a bigger issue down the line. Maintenance gives you peace of mind that when the weather in Ogden gets chilly, you’ll still have a nice warm home to go to.

For furnace repairs, replacement, or maintenance service, call the HVAC experts at Mountain Air. We’ll make sure your home is a comfortable temperature all season long. Call us at (801) 416-2215 or contact us online to get started.

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