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What Are Signs I Need a New Furnace?

A furnace is a major investment for any Nashville homeowner. Although it’s not something that will need to be done frequently, most people will face the decision of needing to purchase a new heating system sometime during home ownership.

Our team at True Blue Heating & Cooling wants you to understand how your furnace works and what signs you can watch for to indicate it’s time for a replacement heating system.

Time Has Passed

Perhaps one of the biggest factors in deciding it’s time to replace your furnace is its age. The average life span of a furnace is 15 to 20 years, but this can vary greatly depending on how well you have maintained your system. However, if your furnace is more than a decade old, it may be time to start planning for a furnace replacement.

Repairs Increase in Number, Cost, and Frequency

Another sign that it may be time to swap out your furnace for a new model is its repair record. As your furnace ages, you’ll find yourself calling in your Tennessee heating, ventilation, and air conditioning (HVAC) professionals more frequently. In addition, you’ll probably see the costs of service calls start increasing as well.

If your repair costs begin to reach half the cost of a new furnace within a year or so, it may be worth it to invest in a new heating system.

Utility Usage Rises

Keep an eye on your regular utility bills. If the unit cost of energy doesn’t rise but your monthly bills do, that may be another sign it’s time to replace your furnace. Older equipment tends to work less efficiently over time, which means it will require more energy to produce the same amount of heat.

One advantage of switching to a new furnace is that new models are always more energy efficient than older ones. As a result, you’ll automatically start recouping some of your investment in lower monthly utility bills.

For example, Money Magazine cites one possible example. If your annual heating costs are $2,000 and you increase your annual fuel utilization efficiency (AFUE) rating by 15 percent in a new furnace, you will save $300 each year. Naturally these numbers depend on your fuel and energy sources.

Excessive Humidity, Dust, or Dirt

Although many factors can play a role in indoor air quality, your furnace can definitely make a difference. If routine maintenance like changing your air filters and regular tune-ups do not solve humidity, dust, or other air quality issues, it may be a sign you need to replace your furnace.

Strange Noises or Odors

Be sure to be attentive to the daily behavior of your furnace. Often, buzzing, vibrations, clanking, or other noises may warrant a service call. If your professional technician finds your furnace has excessive wear or structural damage, it’s a wise decision to invest in a new furnace.

Change in Comfort Level

When you run your furnace, if your home doesn’t feel as comfortable as it has in the past, you may want to explore the causes. Older furnaces that are working inefficiently can cause different rooms in your home to vary greatly in temperature, leading to uncomfortable cold and hot spots. When you upgrade your furnace and its components to newer models, you may be able to boost the comfort level of you and your family.

Physical Appearance

Finally, you can take a quick inventory of your furnace’s physical appearance. If you see signs of rusting, cracks, or other structural weaknesses, it may be a smart idea to evaluate your new furnace options.

Contact True Blue Heating & Cooling for All Your Furnace Needs

If you’d like a professional assessment of your current operation costs and the typical return on investment (ROI) of a new furnace, give our team at True Blue Heating & Cooling in Nashville, TN, a call. Our trained technicians can help you evaluate your system and share information about new models available to help you make an informed decision. Call us at 615-568-7450 or request service online.

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Excellent Service from true blue heating and air service technician Matt was punctual, polite, and knowledgeable . Great price on preventative maintenance twice a year!
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Thank you for coming out to make sure I had heat today! You guys are the best! With all the drama I've had with my furnace, you guys always show up, even on your lunch hour! Thank you again so much!
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Casey is one of the kindest most thorough person. He did my service, answered my questions and was very helpful. I am thankful for him and his team.
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This install of an entire system could not have been a better experience. I am so happy and the system works so very awesome. I wish I would’ve done this years ago.
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Always great and dependable service. Been with them for 3+ years…..
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Excellent service and very detailed in their work. Super friendly and glad to have them taking care of our home.
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First time home owner and I feel comfortable with the service I received today.
I feel at ease going into Summer knowing my unit is doing good.
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Skye, a very polite. professional, and personable young man, performed a seasonal check up on our heating an cooling system this morning. He explained what our systems needs and the priorities of each problem. He also got us set up for a membership for maintenance that works for us. We would like to follow up with him for future work. Thanks Mike C.
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Casey and team did a great job!
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True Blue has taken very good care of me the past three years. Very pleased with their service.

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Easy to work with. Friendly and helpful.
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Casey and Matt showed up late into the evening due to issues on previous jobs but were excellent at diagnosing and fixing the A/C problem very quickly. I was impressed, so much so that I asked to get on a maintenance contract immediately.
Need to mention that a few of my neighbors have had similar experiences with True Blue. I considered honest and very fairly priced. Thanks, guys!
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I would recommend True Blue Heating & Cooling for air conditioning or heating needs! It was super hot summer and our air went out and they were able to replace our old system quickly and at a good fair price. They worked fast and did a great job.
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Very pleased with the service provided by Randy! He was on site less than 24 hours after putting in the request, carefully went through our system and made recommendations on repairs or additions, and when we decided to move forward, he scheduled for next day and had everything installed and ready to go in about an hour. We were not happy with our previous HVAC company and wanted to try someone different. We’ll be sticking with True Blue moving forward!
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Couldn’t ask for better installation and repair technician.- Matthew offered knowledgeable, efficient, professional and friendly service. We are extremely pleased with our new unit.
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Casey and his team always knockout my new custom home builds on time and in budget. If you’re looking for professional and knowledgeable workers in this field then this is the company to hire.
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Fast and fair pricing. Highly recommend these guys!
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Impeccable, prompt, thorough service. Highly recommend!
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They responded and were honest and trustworthy.
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We have used True Blue twice now. Both times we were happy with our experience. This time, although an unfortunate diagnosis for an entire new unit, Matt was fantastic! He was helpful, informative, very upfront and made the process seamless and quick to get handled. Very friendly and professional. We will be using them for all future needs!
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Would recommend True Blue, good company with knowledgeable technicians.
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Casey was great! Knowledgeable, friendly and experienced. A genuine business owner!
Response from the owner:Thank you, Srisagar! We're glad to hear you had a great experience with Casey; his expertise and friendly nature truly shine through.
Highly recommend Casey at True Blue Heating and Cooling. He promptly took my call on a weekend and worked quickly to make sure we had working heat in the house when temps were freezing. He was very kind and patient as well. I appreciate his fast and efficient work ethic.
Response from the owner:Thank you, Rochelle, for your kind words and recommendation! We're glad Casey was able to help you promptly and provide the service you needed during the freezing temps. Your appreciation means a lot to us!
Awesome service experience. Highly recommended.
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Service was great and friendly! They did not pressure me but gave me a detailed overview of services I might need in the future. Would definitely recommend for anyone to use.
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These guys are the best, gives great advice on saving money an throwing it away on a unit that needs to retire lol thank you so much
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They did a great job! Will absolutely use them again!
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Competitive rates. Amazingly fast turnaround/install. Great service!
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They quoted a price over the phone, stuck to it, showed up 30 minutes prior to their arrival tome, finished the work in less than 90 minutes, and the split unit works great. If you are looking for a very well run business you need to go no further than True Blue Heating and Cooling! They are top notch for service in middle TN!

Update 7/8/24.

We came home last night from a trip to a no cool situation. Called today and someone was out in 3 hours. Great service with quick fix.

11/25/24 - Matt came out today and has us back up from a no heat in less than 20 mins and recommended an enhancement to protect our compressor. All work done in less than an hour and we have heat before company arrives for Thanksgiving! Great company.
Response from the owner:Thank you so much for the 5-star review! We're thrilled to know you had a fantastic experience with us.
True Blue Heating and Cooling went above and beyond to resolve our HVAC issue. We were experiencing an A061_F Blower Fault error, where the motor couldn’t run. Matt quickly diagnosed the problem on the first visit and determined that we needed a new control panel board and blower motor. By the second day, both were installed, and everything was running perfectly!

Matt was exceptional—his communication was clear and professional every step of the way. Brandy was also kind and understanding, following up with me after I missed her call.

The team’s efficiency, expertise, and excellent customer care make them stand out. I highly recommend True Blue Heating and Cooling!
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Wonderful company. Performed an evaluation of our home HVAC system. Have used them since buying the home. Great folks to work with.
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Randy from True Blue was prompt, professional, and very knowledgeable. Not only did he tune up our system to make sure it was winter ready, he outlined what we could to in order to maintain out unit, and when it might be time to think about replacing.
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Great punctual service, easy to work with, great communication. Randy is great to work with, recommend him and the whole team!!
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Easy to get in contact and quick response time!
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James and his crew are top notch. They don't try and up sell you on stuff you don't need. They are amazing to deal with, and always answer my calls. James has done work for me for the past 6 years and I have never had any issues with their work or customer service. True blue goes above and beyond to make sure my family is comfortable year round.
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