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10 Signs That Your Gas Furnace Needs Repairs

By Aztil –

Image for 10 Signs That Your Gas Furnace Needs Repairs

As we enter the holiday season, it’s time to fire up the heater and stay cozy on those cool winter nights. Even Florida has a winter, though we may prefer to crank up the heat until shorts are still comfy indoors. To do that, your gas furnace becomes the most important appliance in the house. After that initial smell of burning dust, your furnace should hum along all winter. But what if it doesn’t? We don’t use our heaters for much of the year, but reliable heating in the winter is vitally important. Knowing when to call for furnace repairs can keep you cozy all season and provide peace of mind for next winter. Aztil Air is here to help. Let’s look at the ten signs that your gas furnace needs repairs.

1. Strange Noises

Furnaces rarely make noise. You may hear some creaking right at first, but any serious noises are a bad sign.

  • Baning
  • Clanging
  • Squealing
  • Scraping

These sounds mean there is something wrong inside your gas furnace. These sounds can indicate loose or faulty components. Calling for repairs ASAP is the best way to stay safe and warm.

2. Inconsistent or Insufficient Heat

Your gas furnace should provide a steady flow of heat throughout the house. If you’re not getting enough heat, if the heat comes and goes, or if certain parts of your house have cold spots, there’s a problem. It could be an uncalibrated thermostat, clogged filters, problems with the blower fan, or a problem with the core heating system.

3. Short Cycling

A short cycle is when your furnace turns on and off repeatedly. This means it is not completing a full heating cycle and is likely taking damage and wasting energy with a very short cycle. Short cycles can be caused by a clogged air filter or signal problems from the thermostat. It can also happen if the furnace is overheating for some reason.

Quickly call Aztil Air for repairs if a gas furnace short cycles, as it could be dangerous and inefficient.

4. Rising Energy Bills

Did your energy bills suddenly spike when you turned on the heater? Does it cost way more to heat your home this winter than last winter, even in Florida’s mild cold season? If so, then you may have a furnace problem. Your furnace is working harder than it should. It could be an issue with your filter, ducts, or worn-out components that must be replaced.

Get your furnace inspected and tuned up before it costs a fortune in electricity or gas.

5. Yellow or Flickering Pilot Light

A pilot light provides a gas furnace with an essential function: lighting the gas used for heating. A healthy furnace should have a steady blue flame in the pilot light. If the flame goes yellow (a cooler flame) or flickers, it could indicate a problem with the furnace’s ventilation or gas supply. It could even be a sign of carbon monoxide leaking.

Immediately turn off your furnace and call Aztil Air for emergency repairs.

6. Unpleasant Smells

The burning dust smell when you first turn on your heater for the season is normal. But unusual smells after that should be a red flag.

  • A rotten egg smell can indicate a gas leak. Immediately shut off your furnace and its gas line, then open the windows before calling for emergency repairs.
  • A burning smell can indicate your furnace is overheating or there is a faulty component or exposed wiring that is scorching inside. Again, immediately shut it off and call for repairs.

Aztil Air can help you stay safe with emergency furnace repair services.

7. Difficulty Starting Your Furnace

Have trouble getting your furnace to start or keep running? This could be an issue with your gas furnace ignition system. It could also be a wiring flaw or a thermostat malfunction. A pro can help you diagnose and fix the problem so your furnace provides reliable heating again.

8. Frequent On/Off Cycling

If your furnace cycles on and off often, but not quite short cycling, it could still be a problem. This could indicate an issue with airflow or the thermostat. An inspection can discover why your furnace won’t keep running steadily.

9. Excess Dust or Poor Air Quality

A little dust when you first start your furnace is normal. But if the dust keeps increasing and your home’s indoor air quality drops, this could mean your furnace is not circulating air correctly or cleanly. Florida’s humidity can also cause dust to build up in your ducts and release when the blower runs. Duct cleaning and a furnace inspection can get to the root of the problem and help clear the air inside your home.

10. Carbon Monoxide Detector Alerts

Any home with a gas furnace (gas lines) should have active carbon monoxide detectors. These should be powered and placed near the floor to detect a gas leak that could lead to suffocation inside the home. If a carbon monoxide detector goes off, immediately shut off the furnace, close any gas lines (including the stove or other gas-powered appliances), and open all the windows.

Then call for emergency inspection and repairs.

Aztil Air Gas Furnace Repairs

If your furnace shows any of these signs, Aztil Air is here to help. We’ll help keep your home cozy and your furnace running safely all winter. Contact us online or call for emergency gas furnace repairs.

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What Our Clients Think Of Us


Excellent
Aztil Air Conditioning4.6
Based on 1913 reviews
Richard Driscoll
4 hours ago
Everything from the initial call in for my system not working (an AI voice which was completely responsive and believable), to the initial visit from Jeff Peralta who examined why our system was not working and told us (and SHOWED us why) we needed a new system, to the two installers (Angel and Yusnier) and who came on two days (they were both excellent - knew EXACTLY what needed to be done and knew HOW to do it), and with good humor. The AZTIL experience was superb. I heartedly recommend AZTIL.
Vinnie Mignone
4 hours ago
Reynold 5 stars
Laide María
4 hours ago
Elder great job
Richard Grossman
3 hours ago
Aztil Update: Just had Aztil come in to service my AC as well as install a new water heater. They are the best and that is why I use them and continue to recommend them. The technicians were Tino, Angel and Yusnier and they were fabulous. They were excellent and very professional, personable and extremely efficient. There work was very clean and they protected my apartment during the install process. They did not leave before insuring everything worked as it should. I would give them six stars if I could.
Great company with wonderful technicians as well as excellent office staff communication.
Response from the owner:

Dear Richard Grossman,

Thank you for your glowing review! We're so glad to hear that you had such an excellent experience with Lazarro and Antonio. We pride ourselves on providing top-notch service and are thrilled that you have chosen to sign a 5 year contract with us. We look forward to continuing to provide you with the best service possible.

Thank you again for your kind words.

Sincerely,
AZTIL
Elaine Gross
2 hours ago
Reynald C was great and explained everything to me.
Sylvia Jacobs
15 hours ago
Reynald Charles was my technician. He was very through and got my repair done in a very timely manner. I am VERY pleased with his service and that of Aztil AC.
John Stampfl
22 hours ago
Toni did a fantastic job! I believe he also did a very thorough job in all areas of our AC unit. He advised us of some areas of our unit that was building up mold and what needed to be done. The concern I had was why no other techs that come out every 6 months hadn’t brought this to our attention. Toni is very personable and he took the time to explain everything to us and I could tell that he is concerned about customer satisfaction. Appreciated all his efforts. Excellent Tech! We will request him to come back in 6 months again!
Most pleasant person who came to do diagnostics and repairs to my unit. Very knowledgeable and went the extra mile to make sure everything was working perfectly. I recommend this technician.
Response from the owner:Thank you for your kind words, Pierrette! We're thrilled to hear that our technician provided you with excellent service and went the extra mile. We truly appreciate your recommendation!
Rita Katz
2 days ago
Aztil has always been a very reliable and professional company, and Nico was a terrific and professional technician who was able to diagnose our problem. We were just surprised that our out-of-pocket was almost $2000 even with a maintenance contract and a warranty on the compressor.

We just had our A/C unit serviced by Michael King who was terrific and fixed our drain clog. He was friendly, professional and made a great recommendation to fix our drain clog long term to avoid future headaches. He installed the new Drain IV in the same visit. Highly recommend and we are hopeful that this solution will truly give us peace of mind.
SABRINA BURAC
2 days ago
Niko
Response from the owner:Thank you for your feedback, Sabrina! We appreciate your support and are glad to hear you had a positive experience. Looking forward to serving you again!
mvremer
2 days ago
Great customer service. Made some good recommendations. I will request Niko on future appointments
Response from the owner:We're thrilled to hear you had a fantastic experience! Niko will be excited to assist you in your future appointments. Thank you for sharing your thoughts!
Niko was very professional and answered my many questions. He was pleasant and very knowledgeable.
Response from the owner:Thank you for your kind words, Ginger! We're glad to hear Niko provided the assistance you needed. If you have any more questions, feel free to reach out!
Larry Morrison
2 days ago
Elder did a great job
Response from the owner:Thank you for your kind words, Larry! We're thrilled to hear that Elder did a great job. We appreciate your support!
Donna Simon
3 days ago
A shoutout to our technician, Antonio. He was here on a Sunday and got our air conditioner working again. He was so nice, courteous and professional.
Response from the owner:
Thank you so much for the kind words, Donna Simon! We are so glad to hear that Juan Ortega provided excellent service. He is indeed an asset to our company and we appreciate your feedback.
Mark O’Leary
3 days ago
Elder was fantastic. Fixed everything and did an outstanding job.
Response from the owner:Hello Mark. We greatly appreciate your positive review. I'm glad Benny was able to provide you with good service. We appreciate you as a customer and thank you for your business. Please contact us if you ever have any questions or need support with anything.
rosa loredo
4 days ago
Michael great technician friendly knowledgeable
Response from the owner:Thank you for the kind words, Rosa! We're glad to hear that Michael provided outstanding service. We appreciate your feedback!
Lois Nevler
5 days ago
Dana and Antonio were wonderful. Very kind and knowledgeable
Arlene Kelly
5 days ago
Alberto & Roberto are 10 plus! They installed a totally New air conditioning system . They are very professional, courteous, efficient and clean up after completion! Would definitely use them again!!
Response from the owner:Arlene Kelly, we're so glad to hear that Steven was able to provide you with excellent service and that you would recommend us. Thank you for your kind words!
j b
5 days ago
Michael was very helpful about how to get the most out our system. Professional, knowledgeable and friendly
Response from the owner:Thank you for your kind words, J! We're thrilled to hear that Michael provided you with excellent support. If you have any more questions or need assistance, feel free to reach out anytime!
Dana Degen
5 days ago
Response from the owner:Thank you for the 5 stars, Dana! We appreciate your support!
Nadine Waugh
5 days ago
Antonio is the best AC tech ever did my maintenance and also gave some great recommations
Highly recommend the company and Antonio
Response from the owner:Thank you so much for your kind words, Nadine! We're thrilled to hear that Antonio made a positive impact with his service and recommendations. Your high praise means a lot to us!
Marci Phillips
5 days ago
Antonio was here for a tuneup. Took the time to do the job and go over everything with me. Greatly appreciated
Response from the owner:Hi Marci, thank you for your kind words! We're so glad to hear that Niko did an excellent job and that you were pleased with the outcome. Thank you for being a valued customer.
David Pressler
6 days ago
Antonio came to my house and diagnosed the problem after testing my system, had the part I needed and installed it. My A/C works as it did before! Antonio is terrific!!
Jordan and Kai Were really great … deserve five star and more!!!
Response from the owner:Thank you so much for your kind words, Patricia! We're thrilled to hear that Jordan and Kai made such a positive impact. We appreciate your support and look forward to serving you again!
Nico is amazing! Quickly fixed our issue, explained it and cleaned up. Great service!
diane johnson
6 days ago
Niko was patient and efficient as he carefully examined both AC units! He was terrific !
Response from the owner:Thank you so much for your kind words, Diane! We’re thrilled to hear that Niko provided you with excellent service. Your satisfaction is our priority!
Ellen Jacobson
6 days ago
Elder fabulous
Response from the owner:Hi Ellen, thank you for your kind words! We're so glad to hear that Aztil did an excellent job and that you were pleased with the outcome. Thank you for being a valued customer.
Zelda Freedman
7 days ago
Elder
Service was great
Response from the owner:Thank you for your kind words, Zelda! We're thrilled to hear you had a great experience. We look forward to serving you again!
Alex
Response from the owner:Thank you for your feedback, Richard! We appreciate your support!
Michael Taylor
7 days ago
Response from the owner:Thank you for the 5 stars, Michael! We appreciate your support!
Alice Doyle
7 days ago
Michael, was great. He was very personable. I really liked him and I hope that he comes back in the service for us again I’m giving him 100 stars. was great and he was personable and I really do like him the next time that I have a visit from you guys it will be from him and I almost decided not to use you guys no more because of the other two gentlemen that came they were young boys, and they did not do things properly, but Antonio was very very good and I really liked himHe was very professional so thank you very much for letting Antonio come and giving yourself a second chance have a blessed day.
Clark Sprague
1 week ago
Elder was excellent. One of the best techs. I give him 5 stars
Response from the owner:Hi Clark, thank you for your kind words! We're so glad to hear that Aztil did an excellent job and that you were pleased with the outcome. Thank you for being a valued customer.
Theresa Harper
1 week ago
Response from the owner:Thank you so much for your 5-star review, Theresa! We appreciate your support!
Beth Green
1 week ago
Knows his job, new system
Response from the owner:Thank you for your positive feedback, Beth! We're glad to hear that you’re finding the new system effective. If you have any questions or need assistance, feel free to reach out!
Elder Zavala. He is an excellent tech that took his time explaining everything.. he did his job and everything he was supposed to do. Very happy with today’s maintenance!! He’s a total asset to your company
P. C.
1 week ago
Niko did a great job. He took his time, and did a great job. Highly recommend AZTIL!
Jim Louthan
1 week ago
Elder. Excellent job of repairing AC Excellent job of explaining Membership program.
Response from the owner:Thank you so much for your kind words, Jim! We're thrilled to hear you were happy with our AC repair and the membership program explanation. Your satisfaction is our priority and we look forward to serving you again soon!
Anita Luttinger
1 week ago
Niko very efficient would like him to come here for all future calls
Sheri Meyers
1 week ago
Nico was very knowledgeable. he answered all my questions and offered recommendations for my AC unit I will think about doing. I renewed my yearly Atzil contract for my cooling system.
Response from the owner:Thank you for the wonderful feedback, Sheri! Nico is a phenomenal part of our team, and he will be absolutely thrilled to hear that his knowledge and helpful recommendations made such a great impression today. We love that you are taking the time to think about your AC options, and we are so glad to have you back for another year with your renewed contract! We truly appreciate your loyalty and are always just a phone call away.
Kathleen Mooney
1 week ago
Elder took care of Everything nicely.
Response from the owner:Thank you for your kind words, Kathleen! We're thrilled to hear that Elder provided great service. Your satisfaction means the world to us and we look forward to serving you again soon!
CIHRHH H.
2 weeks ago
Rafael and Asiel installed my new A/C today. They were super. Everything went as planned. I am a happy camper.

12/5/25 Alex came for tuneup and fixed thermostat problem. Wonderful experience. 5 stars.

12.29.25 Alex came to fix a/c thermostat wiring problem. A/C did not put out heat. He fixed within 5 minutes. 5 stars.
Response from the owner:Hi Cihrhh, thank you for your kind words! We're so glad to hear that Rafael and Asiel did an excellent job and that you were pleased with the outcome. Thank you for being a valued customer.
Sandy Creighton
2 weeks ago
Response from the owner:Thank you so much for your amazing review! We're thrilled to hear you had a great experience with us. Your support means the world and we look forward to serving you again soon!
Bob Ormerod
2 weeks ago
Great job of keeping me informed and getting the maintenance done effectively!
Response from the owner:Hi Bob! We're thrilled to hear you felt well-informed and that our team did a great job. Your satisfaction means the world to us and we look forward to working with you again in the future!
I Solomon
2 weeks ago
Elder was terrific. He helped me out and took care of the problem
Response from the owner:Thank you for your positive review. I'm glad you were happy with Rick's work. We appreciate your business and look forward to serving you again.
Daesong Kim
2 weeks ago
Niko did a good job today much appreciated
Response from the owner:Thank you so much for your kind words! We're thrilled to hear that Niko made a positive impact. Your appreciation means a lot to us!
David Schwarz
2 weeks ago
Dana did a fine job
Response from the owner:Hi David, thank you for your kind words! We're so glad to hear that Tino did an excellent job and that you were pleased with the outcome. Thank you for being a valued customer.
Edward Liberston
2 weeks ago
Explained everything I needed to know. Concise and understandable.
Did a great job.!!!!!
Judith Pisani
2 weeks ago
Elder was absolutely professional and did his job quickly and efficiently AI would recommend him highly Judy and Frank Pisani
Linda LaRocco
2 weeks ago
Elder Zavala did a great job.
Response from the owner:Hi Linda, thank you for your kind words! We're so glad to hear that Cody did an excellent job and that you were pleased with the outcome. Thank you for being a valued customer.
William Ernstein
2 weeks ago
Elder did a great job
Response from the owner:Thank you for your kind words! We're thrilled to hear that Elder made a positive impression. We appreciate your feedback!

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Request more information by filling out the form below to learn about our Elite Cool Membership Program.

Highlights of the Elite Cool Membership Program include:

  • Members will receive priority service: Get top priority when scheduling service calls.
  • No overtime charges: We’re here for you anytime, day or night, 365 days a year, without any overtime charges.
  • A 15% member discount: Receive a 15% preferred discount on repairs not covered by the manufacturer.
  • Two maintenance calls per year: Benefit from two maintenance calls per year, spaced about six months apart.
  • AND MORE!

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