Indicators That Your Existing Heating System May Be Ready for Replacement

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If you’re like me, you’re probably reading this with one eye closed. After all, any time you read anything with the word “replacement”, especially “furnace replacement,” it probably doesn’t spell good financial news.

But you still have another eye open, so I’ll try to be as gentle and honest as possible as I share some of the telltale signs that may indicate your furnace is on its last leg.

But first, do three quick math calculations:

  • Determine exactly how old your furnace is. If it’s more than 20 years old, it’s probably running on borrowed time. But if it’s in that “gray” area of about 15 years old, you might consider replacing it with more efficient Energy Star certified furnace.
  • Add up all the money you’ve spent on furnace repairs in the last two or three years. (Don’t factor in regular, annual maintenance checks.) Like old cars, old furnaces become fussy and prone to frequent breakdowns the last few years of their life span. The repair bill total alone might demonstrate that you’re fighting a losing battle against furnace replacement.
  • Review your energy bills. Take into account rate increases, of course, but if your heating bills have been going up while your usage has remained fairly constant, this is a good indicator that your aging furnace isn’t working as efficiently as it should.

With these figures as a backdrop, keep that eye open as you consider the other signs of a faltering furnace:

  • It’s rusting or cracking.
  • It’s making loud or unusual noises it hasn’t made before.
  • It’s spewing dust, dirt, soot or rust.
  • It’s cycling on and off in an unusual manner.
  • The furnace flame has changed from blue to yellow (a potential sign of carbon monoxide).
  • Your home is heating unevenly or is more humid than normal.

Yes, taking stock of your furnace can be an eye-opening experience, but furnace replacement can be surprisingly easy when you call Scott’s Heating & Air Conditioning. We’ll size your home, help you find the most economical solution and then encourage you to train both eyes on your new, blazingly efficient furnace.

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Scott's Air
  
 

Scott’s Heating & Air Conditioning is a full-service heating and air conditioning company and a Bryant® Factory Authorized Dealer in Central Florida. Whether you need repair, maintenance, or installation of a new heating or cooling system, we provide efficient, cost-effective, and professional service. When it’s hot, call Scott!

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Nick was great. He took care of my concerns and all my questions as this is my first home. He was professional, and very thorough I am very happy. Would 💯 recommend
Gary Bungart
2 days ago
6/4/2026 Alan and Logan were here today to do our 6 month check up. They were on time, efficient, polite and knowledgeable. Nice to have a company I can depend on for great service. 1/20/2026: Allen and Michael from Scotts Heating and Air were just here for our 6 month maintenance on our HVAC and they were excellent. Polite, Friendly, On Time and Efficient. We greatly appreciate everyone from Scott's Heating and Air who have been to our house!! We had to have our entire HVAC replaced and Craig really worked with us to get us a fair price and arranged 1 year 0% financing. We got scheduled very quickly and Boris, the installer, could not have been better. He was exactly the type of service person we want in our house. He and his team were polite and meticulous. They cleaned up the job site when it was completed. Once the install was complete Boris was very good and explaining our system to us and left us with complete confidence of a job WELL DONE! ......... Fantastic service and was able to schedule for the next day. Anthony was thorough and explained everything he did. He was extremely polite and efficient. The receptionist who scheduled my appointment was also very polite and easy to work with. I highly recommend Scott's Heating & Air Conditioning.
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Allen is a great technician! I totally recommend his services!!
Janice Jackson
3 days ago
Allen just completed our 2nd regular maintenance and cleaning of our 3 AC systems. Professional, informative, and thorough…what more could you ask for. Thanks Scoot’s for the great employees and service.

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