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Is It Time to Replace Your Old Furnace? 4 Signs

December 30, 2024
Is It Time to Replace Your Old Furnace? 4 Signs

As the weather turns chilly, you’ll be relying on your heater or furnace to keep your home toasty. Unfortunately, if you have a particularly old furnace, you might get left in the cold. How can you tell whether you need a furnace replacement or whether you’ll make it through one more winter with a little maintenance and furnace repair?

Look for these four signs that it’s time for a heater replacement.

1. Your House Is Always Too Cold

An old furnace or heater will have difficulty keeping up with the demands of your thermostat. If your house has always had an issue with warming up, your furnace might just be too small for the space. But if it’s only recently begun to fail at its job, that’s a sign that something’s amiss.

You may also notice that some rooms are warmer than others. Uneven heating is another sign that your furnace can’t push heat throughout the house. For a quick fix, you can try some troubleshooting. The first thing to check if this happens is the filter. You may find the problem goes away once you put in a new one.

If you’re still getting cold air, then the furnace may simply not be able to produce heat anymore.

2. Your Furnace Is 15 Years Old or Older

The surest sign you need a furnace or heater replacement is that your system is 15 to 20 years old. No matter how much maintenance you do, your system has a finite lifespan. This means that your furnace could be putting out lovely, toasty warm air one day and completely quit the next. When an aged system is the problem, the only solution is a new furnace or heater installation.

Why is an old furnace a problem? Eventually, you’ll be putting more money into repairs than the cost of a new system. At that point, it makes sense to just install a new furnace rather than dump cash into the old one.

3. Your Air Quality Is Poor

Even with fresh filters, old furnaces will produce more dust. While air purifiers can help, the best solution is to address the furnace itself. Still, no purifier can remove the most dangerous output of an old furnace: carbon monoxide.

Old systems are at risk of producing this odorless, colorless gas. And it’s not just a mere annoyance; carbon monoxide is deadly in high amounts.

4. Your Power Bills Are Higher

Efficiency decreases with age, and this will become especially noticeable with a failing furnace or heater. To produce the same amount of heat, the furnace will have to work much harder than it has before, and you’ll see this reflected in your utility bills.

Get Ahead of Winter — Trust Southern Air to Replace Your Furnace

If your furnace is giving up, Southern Air is here to the rescue! We’ll inspect your system to see if it just needs tuning up or if you need a wholesale replacement.

Trust our experienced techs to ensure you can maintain comfy temps all winter long. Contact Southern Air before your furnace leaves you in the cold!


Meet Dustin

Dustin Caison serves as both the President and CEO of Southern Air, a family-owned business founded in 1980 and based in Palatka, Florida. As the third generation to lead the company, Dustin has dedicated over 21 years to continuing the legacy of excellence established by his father and grandfather.

A State Certified Air Conditioning Contractor, Dustin brings extensive expertise and professionalism to the HVAC industry. Under his leadership, Southern Air has maintained its commitment to delivering quality service and fostering strong ties with the Palatka community. His dedication and credentials have been key to the company’s ongoing success.

An avid outdoorsman, Dustin enjoys hunting, fishing, and golfing with his family and friends. He is also deeply involved in his local community, serving at his church, Rodeheaver Boys Ranch, the Putnam County Fair Board, and A Women’s Resource Center.

Dustin places great importance on taking care of his people and building strong relationships with his employees. He believes that with a dedicated team, strong business practices, and a focus on continuous growth, any business can achieve remarkable success.

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Debra S.
15 hours ago
Mr Woo, was very pleasant and professional. He was thorough with the maintenance review even at the end of his work day.
Response from the owner:Thank you Debra for the great review and for choosing Southern Air!
Brenda L.
17 hours ago
Respectful, polite, pleasant and knowledgeable.
Response from the owner:Brenda we are glad to hear you enjoyed your service experience with Jason. Thank you for the review and we look forward to serving again.
Catherine O.
17 hours ago
Robert and now Albert were very pleasant, polite, explained and showed us what was wrong and repaired it quickly. Came right on time too!
Response from the owner:Catherine we are pleased to hear of your great experience with us recently. At Southern Air there is no pressure just comfort. We look forward to serving you and thank you for your business.
Deb S.
1 day ago
Very pleasant, professional. Explained things to me.
Response from the owner:Thank you! Glad everything was clear and the experience was a good one—that’s what we aim for.
Arron C.
2 days ago
Albert Vera serviced our AC today he was on time professional and thorough.
Response from the owner:Hey Arron, Justin is Amazing and we are glad to hear he saved the day! Thank you for choosing Southern Air!
Silas C.
2 days ago
Southern Air was a great choice. They were punctual, communicative, timely, polite, and trustworthy throughout the process. Everything was easy and professional, and I really appreciated how simple they made the air conditioning service. Albert, TJ and the Management/Office staff were awesome during a dire need. Thank you and God Bless USAll
Response from the owner:Thank you, Silas, for taking the time to share your feedback. We’re glad our team arrived on time, communicated clearly, and made your air conditioning service feel straightforward during a stressful situation, and we take pride in our professionalism and fast response. If you ever need a seasonal tune-up or would like to set up ongoing HVAC service, please give us a call.
Al
2 days ago
Professional service with a smile, I couldn't ask for more.
Response from the owner:Thank you, Al, for your feedback and for noting the friendly, professional service you received. We take pride in our professionalism and making every visit a smooth experience. Please feel welcome to call us anytime to schedule seasonal tune-ups or set up ongoing service.
marie C.
3 days ago
Technician Mr. Lake is professional, detailed and knowledgeable. He explained what needs be done and thorough. Geat service.
Response from the owner:Thank you, Marie, for taking the time to share your feedback. We’re glad Mr. Lake provided a professional, detailed visit and clearly explained the recommended work, and our fast response is something we work hard to maintain. Please call us anytime for seasonal tune-ups or if you’d like to arrange ongoing HVAC service.
David S.
4 days ago
Mr. Woo did a great job. He performed our semi-annual maintenance.
Response from the owner:We’re happy to hear Robert did a great job and took the time to work through everything with you. Thank you for trusting Southern Air with your HVAC repair.
Doug C.
4 days ago
Very professional & courteous. Efficient service.
Response from the owner:Thank you, Doug! I'm delighted to hear that our team's professionalism and courteous service made a positive impression. Efficiency is a core principle for us, and your feedback is truly appreciated.
Suzanne V.
4 days ago
Our technican was worked quickly and efficiently. He did a great job of the service and letting us know what he was doing.
Response from the owner:Thank you for sharing your experience! We’re proud to have Jason on our team — he’s always quick to diagnose and get things taken care of. We’re so glad we could get out the same day and get you back up and running!
Kathy
5 days ago
I thank you for the opportunity to leave this response. I had an issue yesterday, October 11 with family coming over and I had a technician come pretty quick I must say and it was Trenton and he was Awesome. My maintenance was scheduled for today and he came back out and did a thorough check and he was very professional gave me all the information and I was very happy would highly recommend!!!!
Response from the owner:Thank you, Kathy, for your feedback and for recommending Southern Air. We’re glad we could respond quickly, and that Trenton provided a thorough, professional check along with clear information to keep everything running smoothly. Please feel free to call us anytime for seasonal tune-ups or to set up ongoing maintenance service.
Diane P.
5 days ago
Is very personable . Told us the problem and exact cause. We really appreciate that! Did a find job for us. Advised us too - all was under warranty Larry and Diane Pope
Response from the owner:Thank you, Diane, for taking the time to share your feedback. We’re grateful you appreciated our professionalism in staying on site, diagnosing the issue, and getting the right parts to complete the repair. Please call us anytime to schedule a seasonal tune-up or set up ongoing service for your system.
Michael H.
7 days ago
Great job. Please send him back when we need service again.
Response from the owner:Thank you! Glad he took great care of you—we’ll have him back when you need us.
Ilene L.
1 week ago
Southern Air technician Justin C. is the best technician I have ever had work on my systems. He is polite, professional and trustworthy. He is very knowledgeable with the equipment. 10 🌟
Response from the owner:Thank you, Ilene, for taking the time to share your feedback. We’re glad Justin provided a professional, trustworthy visit and clearly explained your system with strong technical know-how. If you’d like, please call us anytime to schedule a seasonal tune-up or set up ongoing service.
Church S.
1 week ago
Tech came out to evaluate our system and found that it must be replaced. He examined the system and found that the unit was not too old and not worth repairing. Will be meeting with sales team for estimate to replace the unit.
Response from the owner:Thank you for your feedback. We appreciate you noting how thoroughly our technician evaluated your system and helped you understand why replacement made more sense than repair, and we aim to stay professional from the first visit through the estimate. Please call us anytime to schedule seasonal tune-ups or set up ongoing service.
Ida F.
1 week ago
He was detailed and very pleasant to work with.
Response from the owner:Thank you, Ida, for taking the time to share your feedback. We’re glad you appreciated the detailed work and how pleasant the visit felt, and we pride ourselves on our professionalism. If you ever need a seasonal tune-up or would like to set up ongoing service, please give us a call.
Beth A.
1 week ago
Very nice experience as always. Thanks J. 6 months new system maintenance .
Response from the owner:Thank you, Beth, for your feedback and for continuing to trust Southern Air for your new system maintenance. We pride ourselves on professionalism, and we’re glad your visit with our team went smoothly again. Please call us anytime to schedule seasonal tune-ups or set up ongoing service.
Awesome Technicians. Knowledgeable & Thorough Service
Response from the owner:Thank you so much for the great review, Bryon! I'm glad to hear that our technicians provided knowledgeable and thorough service for your HVAC needs. We appreciate your feedback and look forward to serving you again.
DonaRae L.
2 weeks ago
Communication was excellent all along from scheduling the service to completion of the service call.
Response from the owner:Thank you, DonaRae, for your feedback and for highlighting how smoothly things went from scheduling through the completed visit. We pride ourselves on fast response and professional communication every step of the way. If you would like to schedule seasonal tune-ups or set up ongoing service, please call us anytime.
Nana A.
2 weeks ago
Lake was very knowledgeable and efficient. I would recommend this employee. Great person to work on air
Response from the owner:Thank you for your review! We know how important it is to have issues resolved quickly, and we’re glad Robert was able to take care of the drain problem promptly and professionally. We appreciate you trusting Southern Air!
Tony D.
2 weeks ago
Dylan was extremely courteous, professional, and a pleasure to interact with for my A/C check.Thank you
Response from the owner:Tony, thank you for taking the time to leave this review. I’m glad Dylan made your A/C check easy with his courtesy and professionalism, and we appreciate you choosing Southern Air.
Judy
2 weeks ago
Our first experience having Southern Air service was due to A/C unit going down. Contact person at the office, I believe Gabby, was courteous and mentioned they had a technician available late morning on same day. We received a text with Justin's pic attached to say he would be in. Unbelievable, he was here within 3 hours. Justin is very knowledgeable with his work. He kept us informed of what he was doing. He's courteous and respectful to speak with. He's a great asset to the company. They've gained an additional satisfied customer. Unfortunately, the previous company we were with, about 11 years, could not respond to our needs or apparently cared. We will share our experience with Southern Air with our neighbors and church family. Thank you Southern Air and Justin! Bob & Judy Today's visit..2/21/24 5 Star technician with Southern Air. Justin is well informed and knowledgeable with his delivery of quality service. He is a man of integrity. Thank you Southern Air for offering quality technicians to the community. Bob & Judy
Response from the owner:We're overjoyed to see your 5-star rating! Thank you for sharing your positive experience with us.
Quyen D.
2 weeks ago
Very good in what he does, pleasant and knowledgeable.
Response from the owner:Thank you, Quyen, for your feedback and for noting how pleasant and knowledgeable our technician was. We pride ourselves on professionalism and a fast response on every visit. Please call us anytime to schedule a seasonal tune-up or set up ongoing service for your HVAC system.
Anna D.
2 weeks ago
Albert was polite, professional and took the time to explain maintenance and warranty options to me. No pressure. Very satisfied with 6 month p.m.
Response from the owner:Thank you, Anna, for taking the time to share your feedback. We’re glad you received quick, courteous, professional service and that our team answered your questions clearly, since fast response is a point of pride for us. Please call us anytime to schedule seasonal tune-ups or set up ongoing maintenance service.

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