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Common Furnace Problems and How to Fix Them

November 12, 2022 | Blog

When you’re ready to warm up after being in the autumn cold, nothing is worse than coming home to a cold house! Whenever your furnace is starting to let you down, it doesn’t mean you have to get a new one. In fact, looking into furnace repair can save your furnace and your wallet.

Here at Big Mountain Heating & Air Conditioning, we know how important it is to be able to DIY home services to escape that Sacramento weather!

Broken Thermostat

If you notice that your temperature is not showing on your home’s thermostat, it may be hard to regulate the temperature of your home. Thermostats will become non-responsive if broken as well. If this happens, there are some steps you can take to troubleshoot the issue by yourself.

One of the steps that you can take is to check your power circuits. It can be easy for a wire to not be attached, or for power outages to affect your thermostat’s power. If your thermostat is battery-powered, take the time to replace the batteries. This will keep the power supply strong and the thermostat responsive.

Dirty Furnace Filter

If your thermostats and blower belts are both okay, the problem may be in your filters. The filters in your furnace need to be changed at least every 3 months. This will need to be changed more if you have pets, as dander and fur will quickly start to clog your filters. A dirty furnace filter can contribute to a lack of air flowing out of your furnace, bad smells and more.

To replace your dirty furnace filter, you need to get a new one. Most HVAC filters are fiberglass and can be bought from local retailers or mailed directly to your house. After you receive your filter, locate the service panel and remove it. After that, you should be able to see the old filter. Simply remove it, replace it and see if your furnace starts working correctly.

When Should I Consult A Technician?

The easiest way to tell if you need to consult a technician is if your furnace is starting to act and sound strange.

If you’ve done all you can to make sure your furnace is running and are still hearing clanging, there is something wrong with your machine. An easy way to avoid a broken furnace is to have it regularly inspected, usually 1 to 3 times a year.

Ready To Repair Or Replace Your Furnace?

At Big Mountain Heating & Air Conditioning, we know what a pain it is when your home systems fail you. Whether you’re left cold in the Sacramento autumn or wondering if it’s time for a furnace tune-up, we have the tools for you!

We don’t stop at heating, with solar and window services to make sure your home stays as beautiful as you bought it. Contact us today for the best customer service around, from start to finish!

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What Our Customers Have To Say

Good Rebates

This is a review for a complete HVAC system replacement from Big Mountain. I started at the SMUD website looking for the best rebate program and found a list of contractors there. I vetted out companies that had a lower number of completed jobs per the SMUD rebate program data.

Lee S.

Very Professional

Had my A/C go out yesterday, called Big Mountain today and they had a serviceman in my area of Lincoln, he was here within a half hour and fix my unit in a very professional manner, and the cost was reasonable. I was very impressed with the company and the serviceman.

Tom D.


I had a appointment with them between 1-3 and one of their staff members called me and kept me updated when they will arrive which was nice. Steve arrived on time and was really nice for explaining what could the cause be. My ac fan was working but cool air wasn’t coming out.

Krystal L.