Warning Signs that You Need Furnace Repair

A healthy and comfortable home environment requires an efficient and reliable heating system. As most homeowners and business owners know, regular maintenance from HVAC professionals is a vital part of keeping our property’s furnace in top condition.

Unfortunately, even a well-maintained furnace can still break down occasionally. Though our furnace system hasn’t stopped working entirely, there are some early warning signs to look for that can show that something’s wrong. Having repairs sooner rather than later can save us the trouble of going without a working heater, as well as possibly cutting the cost of the repair job. Here are some of the warning signs to look for that our furnace needs repairing:

1. Increased Heating Bills

A high electric bill is often a sign that our heating system is not operating at its highest efficiency. Heaters often lose their effectiveness as they age and if they are not well maintained. As a result, our system may run longer to provide the same amount of heat causing your electric bills to go up. If you need a professional to assist you with any heater repair, our HVAC technicians have the equipment and knowledge to find the problem and advise you on the next steps.

2. The Thermostat Stops Working

A sure sign we need a furnace repair is when we have to keep turning up the heat, and it doesn’t seem to be making much of a difference. Regardless of whether this malfunction is due to electrical issues or loose wiring, call a trained HVAC technician to fix a broken thermostat as soon as possible.

3. Yellow Flame

When a furnace is working correctly, it will distribute a blue flame. When it changes to yellow, it is a warning sign that your system can be leaking carbon monoxide which is very dangerous to those who inhale it. Getting an expert to examine our unit will eliminate any further danger and damage.

4. Strange Noises

A strange noise from our furnace is one of the most prominent red flags that our system needs repairing. If you heard any banging, popping, humming, or screeching, this could be a warning sign that you may need to replace your unit or some parts of it.
The reason for some of these noises could be:

  • Popping: This sound can happen when parts inside our furnace respond to temperatures changes within our system.
  • Rattling: Unsecured ductwork, loose sheet metal or screws can be the cause of this sound. It may also suggest that the lower motor is not correctly balanced.
  • Humming: The unit’s fan motor may produce electrical humming sounds, but the fan should never be loud or disruptive. If it is, the inducer motor or blower fan motor could be starting to fail.
  • Screeching or Squealing: This is a sign that there is an overall issue with our blower motor or inducer motor. Possible problems could be a loose bearing, deteriorating belt, or a problem with the pulley that holds the belt.

5. Gas Smells

Old furnaces have the high risk of developing cracks in the heat exchanger inside our furnace. If we can smell gas leaking, it’s imperative to shut down our system immediately and call a professional HVAC technician quickly.

6. Dusty or Dry House

If our furnace is not functioning correctly, we might notice an increase in dust and dry air inside our home. Avoid this furnace malfunction that can cause asthma, allergies, and other health problems by having an expert to check our furnace and repair it if needed.

7. Furnace is more than 15 years old

The average life expectancy of a heating system is within 16 and 20 years. If your furnace system is close to this age or older and you have a repair costing more than 15% of a new furnace, consider replacing it with a new one because it is more likely to fail again soon.

Generally speaking, remember that no matter the age of the furnace, if the cost of repair is 50% or more expensive than a new furnace, we should replace it.

Expert Repair for All Your Heating Needs

Making sure that your furnace is in excellent working condition before the cold winter starts will prevent unnecessary furnace repair. Routine maintenance is essential for your furnace to work its highest efficiency and lengthen its life. If your HVAC system needs servicing, it’s best to call Einstein Plumbing, Heating, and Cooling. We provide plumbing, heating & cooling, water heater, and sewer & mainline services throughout Oregon, Washington, and Nevada. For more information about our expert services, contact our team today at 888-671-7767 or email support@einsteinplumbing.com.

Treat your furnace right and hire a licensed and qualified technician to repair your furnace when it starts to give warning signs of a struggle. You won’t regret it when you get an extra few years from your heater.

You may want to check out our other plumbing articles:

27 thoughts on “Warning Signs that You Need Furnace Repair”

  1. I didn’t realize that a yellow flame in the furnace could mean a sign that it is failing. Fortunately, I’ve never run into this problem myself, but it does seem like a serious one to look out for. After all, if it is carbon monoxide that causes the flame to burn yellow then that is a sign of a serious issue.

  2. My youngest daughter approached me yesterday saying that there’s a dust bunny underneath the coach. This is the first time that we’ve had that in a long time. I was wondering what could have caused it and then I saw your article. According to you, it’s a sign that the furnace is malfunctioning and needs repair. I’ll go get someone to check on it right away. Thanks a lot!

  3. Last night, my boyfriend came over for a visit, and he mentioned seeing the furnace flame change from blue to yellow. I shrugged it off thinking that it’s normal for the flame to change colors every once in a while, but now I learned that it’s not! When you mentioned that yellow flame is a sign that the system is leaking hazardous carbon monoxide, I began panicking! I’ll make sure to mention this to my parents. Thanks for sharing.

  4. Thanks for sharing an article about the signs that a furnace needs repair. I like that you talked about how recognizing early signs of furnace issue can save us from spending on costly repairs. I never knew that an increased heating bill may mean that the water heater is not working properly anymore at its highest efficiency. My husband was asking me if I can think of any reason for why our heating bill drastically increased. It’s great that I found your article as an answer to my question. It’s important for us to find a repair service that will help us immediately to avoid a high heating bill. I’ll make sure to remember all your tips.

  5. The house I moved into is kind of old. I’d been told that the furnace was in good condition. However, it seems like a new one might need to be installed, especially after reading how there is an increase in dust and dry air when it’s not working properly.

  6. I absolutely agree with what you said about the importance of an efficient and reliable heating system to achieve a healthy and comfortable home environment. My mother called me today in the office and told me that the furnace in my home is producing strange and loud noises. She tried to figure out what’s wrong with the furnace but unable to fix it. I believe that what she heard was the popping sound that I also heard the other day. It’s important for me to provide my family a comfortable home, so I will make sure to contact a professional heating repair to get help on repairing our furnace.

  7. I like that you mention that a high electric bill may be a sign that your heating system is not working as well as it should. I’ve noticed that with my own furnace, so I think it may be time to get it looked at. I want to make sure that I hire a reputable HVAC contractor to make any necessary repairs so that I don’t have to worry about it this winter.

  8. I like that you talked about how you must consider calling a furnace repair specialist immediately when you smell a gas leaking. My daughter called me today and told me that she had to leave the house because of the smell of gas coming from the furnace. Her safety is my priority, so I will make sure to call a furnace repair company to help us with it immediately. Thanks for the tips!

  9. I didn’t know that furnaces only last from 16 to 20 years long. I don’t think I’ve been getting as much heat out of my furnace lately. I can see how it would be nice to have someone replace it with a new one because I think it’s about 17 years old now.

  10. I like that you talked about how you must consider replacing your heating system if it ages more than 15 years old because of the possibility of it in failing soon. My husband and I are living in the house that my mother gave us. The heating system that we have has been installed for more than 16 years now. It’s important for me to ensure our comfortability at home, so it’s imperative for me to ensure the efficiency of all the appliances. With that being said, I will make sure to contact an HVAC company to get help in replacing our furnace.

  11. Thank you for the post on the warning signs that you need furnace repair. I definitely think if you notice that turning up the heat on your thermostat doesn’t do anything you should call a professional. You want to have that fixed as soon as possible to prevent further issues and allow you to heat your home again.

  12. The best part of your article for me is when you talked about how you can consider asking for written estimates from at least 3 companies that you’re considering in order to find the furnace repair company that offers the most comprehensive service for the best price. The furnace we have at home is producing popping sound whenever we try to use it. It’s important for us to have the problem of our furnace repaired to prevent the problem from getting worse. This is an unexpected issue, so we don’t have the luxury amount of money to use for its repair. It will make sense for us to find the furnace repair company that can provide the best deal possible without compromising the quality of their job. I will make sure to consider all your tips for finding the best furnace repair company.

  13. I like that you talked about how you must consider furnace repair and once you hear a strange noise from your furnace. My family was watching a movie last night when we heard our furnace producing banging sound. This is the first time that it happened, so I’m glad that I came across your helpful blog. It’s important for us to have this issue checked and repaired as soon as possible, so I will make sure to contact a professional furnace company for help. Thanks!

  14. I like that you talked about how you imperative it is to immediately shut down your furnace and contact a professional if you notice that your furnace is producing gas smell because it may mean that there are cracks developing in your system. We started smelling a leaking gas in our house this morning which is why we have no working furnace at the moment. Now that I know the need to contact a professional, I will make sure to call an HVAC specialist as soon as possible. Thanks!

  15. I am thankful to be made aware that the yellow light that comes from the furnace indicates that it is releasing carbon monoxide and needs to be checked by a professional right away. I thought there was something different with the furnace, but I could not point my finger at it. Now that I realized it, the flame was orange instead of blue. I will call for help right away.

  16. I’m glad that you mention how having a high electric bill an show that your heating system isn’t functioning efficiently, which can happen as they get older or if they’re not well maintained. In order to prevent this, you’d probably want to hire a local heating repair service so they can come over regularly and check for problems. When doing this, you’d probably want to find someone who has experience with the brand you have so they know how to properly repair and maintain your system.

  17. I never knew that you must consider replacing your furnace that’s close to the average lifespan of a heating system because you can expect that it will fail again soon. Our furnace at home was installed more than 16 years ago. It has been shutting down for no reason these days, so I will make sure to hire a professional that can replace it with a new one as soon as possible. Thanks!

  18. Wow, I never knew that a furnace should be emitting a blue flame and that when the flame is yellow, it could be a sign that there is a leak. That is really good for us to know because when my husband went to check our furnace this morning, the flame wasn’t quite as blue as usual. We’ll have to call a professional to come and help us get everything checked so we are not putting our family in danger by having an inefficient HVAC system.

  19. You got my attention when you said that you should consider replacing your furnace if it’s close to the age between 16-20 years since it’s the average life expectancy of a heating system. My husband and I are looking to install a new furnace. Our old furnace was installed more than 17 years ago and has been showing signs of problems. I will hire a professional to install a new furnace soon.

  20. I never knew that a furnace’s lifespan is between 16 and 20 years. That is really good to know because our furnace has to be over 18 years old, so it’s no wonder we’re having problems with it. At this point, it would be much better to just replace it because the repairs wouldn’t be worth it for just the year or two that it has left. I’ll have to call a furnace specialist and see if they could help us get it taken care of soon.

  21. You got me when you said that your furnace needs to be repaired when it’s making strange noises. I will make sure to do this because my furnace at home has been producing squealing noises that are becoming annoying at times. My goal is to eliminate the noises and make sure that I have an efficient furnace, so I’ll hire a heating contractor soon.

  22. I never knew that most furnaces last between 16 and 20 years. That is good to know because our furnace is probably 15 years old right now, so we should probably start looking for a company that could replace it for us. Even if it lasts for the next 5 years, it would still be safe to have the company’s information on hand so that we’re always prepared!

  23. The furnace is one of the most important parts of your home, so you need to know when it should be repaired. I particularly like that the article brings up the yellow flame because that is a huge warning sign. After all, that likely means that the heater is leaking carbon monoxide which is a problem that you’ll want to get fixed immediately.

  24. Thanks for a really great article!!! I enjoyed reading it very much. The way you have mentioned all the pointers indicating the signs is really brilliant. Some, people aren’t aware of these signs.

  25. I never knew that your furnace’s blower motor must have issues due to a deteriorating belt if your furnace is making squealing sounds. With that in mind, I will make sure to have our furnace repaired as soon as possible. Our furnace has been producing irritating sounds that are unusual. We don’t want to wait for things to get worse. Thanks for sharing this.

  26. You got me when you said that your furnace is not working efficiently if you noticed that your electric bills are getting higher. My husband and I have been bothered because of the sudden spike of our energy bills. We noticed that our furnace has been making strange noises too. Since we don’t want to ruin our budget on electrical bills, we will make sure to have our furnace repaired soon.

  27. Thanks for letting me know that increased heating bills is an indicator of problems. Maybe it would be best to have a professional come and fix it. That way, we can save money on our bills.

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