Top 5 Furnace Problems and How To Fix Them

Home / Top 5 Furnace Problems and How To Fix Them

It’s that time of year again – the cold weather is starting to move in and homeowners everywhere are preparing by turning up the heat. But what happens if your furnace starts acting up? Here are five of the most common furnace problems and how to fix them. Keep this information handy, just in case!


1. There’s No Power

There are a few things that could potentially go wrong with a furnace and cause it not to have power. One of the most common problems is when the furnace isn’t getting any electricity. This could be caused by a tripped circuit breaker or a blown fuse. If you have checked to make sure that there is power going to the furnace and it is still not working, you may need to call in a professional to take a look at it.


Another possibility is that the furnace may be having problems with its gas line. If you smell gas near the furnace, it is important to turn off the power and call a professional right away. A furnace repair professional will be able to fix any of these problems and get your furnace up and running again.


A furnace technician’s job can be difficult when the furnace isn’t working. The technician has to troubleshoot the furnace to find out what’s wrong. Sometimes, it’s a simple fix, like changing a blown fuse. Other times, there may be something more complicated wrong with the furnace. In any case, the technician will work to get the furnace up and running as quickly as possible.


2. It Keeps Cycling On And Off

If your furnace is cycling on and off, it likely needs to be cleaned. Clogged filters or vents can cause the furnace to overheat and cycle on and off. You can clean the filters and vents yourself, or call a technician to do it for you. Another possibility is that the furnace is too large for your home.

A furnace that is too large will cycle on and off in an effort to maintain the desired temperature. You may need to downsize your furnace to fix this problem.  Lastly, the furnace may simply be old and in need of replacement. If your furnace is more than 15 years old, it may be time for an upgrade.

3. There’s Insufficient Heat Or No Heat At All

There can be a few reasons why your furnace might not be producing heat. One common problem is a dirty furnace filter. If the furnace filter is clogged, it will prevent the furnace from distributing heat properly. Other causes of insufficient or no heat could be a broken thermostat, a malfunctioning furnace, or a lack of fuel.


If you’re experiencing problems with your furnace, the best thing to do is call in a professional to inspect and fix the issue. In the meantime, you can try some troubleshooting steps yourself. One thing you can do is change the furnace filter to see if that fixes the problem. You can also check to see if the furnace switch is in the “on” position and make sure there is fuel available.


If you’re still having problems after trying these tips, it’s best to call in a professional to take a look at your furnace and get it up and running again.

4. The Furnace Is Making Unusual Sounds

If your furnace is making unusual sounds, it may be experiencing a problem. If you try to fix the problem yourself, there are a few things you can do to troubleshoot it. First, make sure that the furnace is turned on and that the thermostat is set to the correct temperature. Next, check the furnace filter to make sure it is clean and not clogged. If the furnace filter is dirty or clogged, replace it. Finally, check the furnace vents to make sure they are clear and not blocked. If you have tried all of these things and the furnace still isn’t working properly, it may be time to call a professional.

5. Ignition Problems

If your furnace is having ignition problems, you may be able to fix them by cleaning the igniter. The igniter is the part of the furnace that lights the gas, and if it’s dirty, it can cause problems with the furnace’s ability to ignite. To clean the igniter, you’ll need to remove it from the furnace. This can be a little tricky, so you may want to call a professional to help you with this. Once the igniter is removed, use a brush or a wire brush to clean off any built-up dirt or dust. You can also use a vacuum cleaner to clean it off. Then, reinstall the igniter and try turning on your furnace again.


No one wants their furnace to break down in the middle of winter, but if it does, these are the five most common problems and how you can fix them. If your furnace is giving you trouble, don’t panic! Call us today and we will help get your heat back on as quickly as possible.

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Superior Mechanical Services, Inc. began in 1948 as a family-owned business with a vision to provide value-minded service with a down-to-earth approach to customers throughout the San Francisco Bay Area. As the premier Commercial and Residential HVAC Service provider for Livermore, Dublin, and Pleasanton, Superior Mechanical can do everything from heating and air conditioning to boiler and plumbing services. Our certified technicians will ensure every part of your project is done right using a careful checklist to guide and test each step. At the end of your appointment, we’ll show you how to get the most out of your new system and give you tips on maintenance so it lasts for years to come. Contact us today for amazing service tomorrow!

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