Fast Furnace-No Heating Diagnostic
We quickly find why your furnace stopped heating and give honest repair options to restore comfort fast.
Furnace-No Heating Diagnostic
When your furnace stops heating, you need clear answers fast. At Dr. Shox Heat-n-Air, we provide furnace no heating diagnostic service to find the real cause of the problem and help you get your home warm again. We work on residential heating systems across the Memphis metro area, plus nearby communities in Mississippi and Arkansas. Our goal is simple: honest diagnosis, fair pricing, and repairs that make sense for your home and budget.
A furnace that runs but does not produce heat can fail for many reasons. In some homes, the thermostat is not sending the right signal. In others, the issue may be a dirty flame sensor, bad ignitor, clogged filter, limit switch problem, pressure switch fault, blower issue, gas supply problem, weak electrical connection, tripped safety control, or a worn-out part inside the unit. Sometimes the furnace will not turn on at all. Other times it may short cycle, blow cool air, make unusual noises, or lock out for safety. Our diagnostic service is designed to pinpoint the issue instead of guessing.
What our furnace no heat diagnostic includes
We start with the symptoms you have noticed. If your heater is not heating, not turning on, or not keeping up, we listen first. Then we perform a step-by-step inspection of the furnace and related controls. This helps us narrow down the failure and confirm what is causing the no heat condition.
- Check thermostat settings, programming, batteries, and call-for-heat operation
- Inspect power supply, breakers, disconnects, fuses, and wiring connections
- Test furnace control board response and system safety sequence
- Inspect ignitor, flame sensor, burners, and ignition cycle
- Check gas valve operation and confirm basic fuel delivery where applicable
- Examine pressure switches, limit switches, rollout switches, and other safety devices
- Inspect air filter condition and airflow restrictions that can cause overheating or shutdowns
- Check blower motor function, capacitor performance where applicable, and fan operation
- Look for venting or drainage issues that may affect furnace performance
- Identify worn, loose, dirty, or failed components contributing to the loss of heat
Once we isolate the problem, we explain our findings in plain language. We let you know what failed, why it matters, and what repair options are available. If a repair is the right move, we can discuss the next step right away. If the furnace is older and the repair cost does not make sense, we will be honest about that too. We believe homeowners deserve facts, not pressure.
Common furnace problems we diagnose
We diagnose many types of residential furnace issues, including gas furnace no heat calls and common heater troubleshooting problems. If your system is acting up, there is a good chance we have seen it before.
- Furnace blowing cold air
- Furnace not turning on
- Furnace starts then shuts off
- Furnace short cycling
- Pilot or ignition problems
- Dirty or failed flame sensor
- Bad hot surface ignitor
- Faulty thermostat or control issue
- Blocked filter or airflow problem
- Limit switch or pressure switch faults
- Blower not working
- Intermittent heat loss
- Strange furnace noises or burning smells
Why a professional diagnostic matters
No heat problems are often connected to gas, electricity, combustion, and built-in safety controls. That is why a professional furnace diagnostic is important. Replacing parts without testing can waste money and miss the real issue. Our licensed and insured team takes a careful approach so you get a proper answer before any repair work begins. That protects your comfort, your time, and your heating system.
A correct diagnosis can also help prevent repeat breakdowns. In many cases, one failed part is only part of the story. A dirty system, airflow issue, loose wire, weak inducer performance, or neglected maintenance may have helped cause the shutdown. We look at the full picture so you understand what happened and what can help keep it from happening again.
What to expect when you call us
When you contact Dr. Shox Heat-n-Air for a furnace no heating diagnostic, you can expect personal service from a local company that values consistency, reliability, fairness, and honesty. We were established in 2024 and quickly became a trusted choice for residential HVAC service because we treat customers the right way. We show up ready to troubleshoot, answer your questions, and help you make a confident decision.
We service residential systems and offer unbeatable rates designed to lighten the burden when heating trouble hits at the worst time. If we complete the repair, you can have peace of mind knowing our work is backed by a 1-year labor warranty. We want you to feel comfortable not only with your furnace again, but also with the company you hired.
Signs you should schedule a diagnostic now
- Your furnace is running but the air is not warm
- Your home will not reach the thermostat setting
- The system turns on and off too often
- You smell something unusual when the heat starts
- You hear banging, squealing, rattling, or humming
- Your energy bills jumped without a clear reason
- The furnace will not start, especially during cold weather
- You have reset the system but the problem keeps coming back
Waiting too long can turn a smaller repair into a bigger one. If your furnace is not heating properly, let us inspect it before the issue gets worse.
Book your furnace diagnostic with Dr. Shox Heat-n-Air
If you need furnace repair troubleshooting or a no heat furnace inspection, we are ready to help. Dr. Shox Heat-n-Air provides trusted furnace no heating diagnostic service for homeowners in the Memphis metro area and surrounding counties in Mississippi and Arkansas. Call us today to schedule your diagnostic appointment. We will find the problem, explain your options clearly, and help restore safe, reliable heat to your home.
Our Furnace No-Heat Diagnostic Process
When your furnace stops heating, we move fast, diagnose the real problem, and explain your options clearly. Our process is built to protect your comfort, your time, and your budget from the first call to the final system check.
Fast Call Intake & Arrival
When you call Dr. Shox Heat-n-Air, we ask key no-heat questions about your furnace, thermostat, airflow, and breaker status so we arrive prepared. We schedule a prompt visit, give you a realistic arrival window, and show up ready to diagnose residential gas or electric heating systems.
Hands-On System Diagnosis
Our licensed and insured technician performs a full no-heat diagnostic, not a guess, checking the thermostat, control board, inducer motor, ignitor, flame sensor, safety switches, gas valve, filter, and airflow. We also test voltage, sequence of operation, and fault codes to pinpoint the exact cause of the heating failure.
Clear Solutions & Verified Heat
Once we find the issue, we explain the problem in plain language and give you honest repair recommendations with fair pricing before any work begins. After service, we run the furnace through a full heating cycle, confirm safe operation, and make sure warm air is reaching your home before we leave.
Furnace-No Heating Diagnostic FAQs
If your furnace is running but not heating, or it will not turn on at all, these are the questions we hear most often from homeowners in Memphis, Mississippi, and Arkansas surrounding counties.
- What does a furnace no-heating diagnostic include?
Our diagnostic is a full check of the system to find out why your furnace is not producing heat. We inspect the thermostat, power supply, safety switches, igniter, flame sensor, control board, filters, airflow, and other key parts. At Dr. Shox Heat-n-Air, we do not guess. We pinpoint the problem, explain it in simple terms, and give you clear repair options before any work is done.
- How do I know if I need a furnace diagnostic or just a simple repair?
If your furnace is blowing cold air, not turning on, short cycling, making odd noises, or heating unevenly, a diagnostic is the right first step. Many heating problems can come from more than one cause, so testing the system first helps us repair it the right way the first time. That can save you money, time, and extra frustration.
- Can you fix my furnace the same day?
In many cases, yes. Once we complete the no-heat diagnostic, we can often make the repair during the same visit if the issue is straightforward and parts are available. Our goal is to restore your heat as quickly as possible without cutting corners. We know a cold house is stressful, and we work hard to get your system back up and running fast.
- Is it safe to keep trying to run my furnace if it is not heating properly?
Usually, no. If your furnace is not heating right, turning off repeatedly, giving off unusual smells, or making loud sounds, it is best to shut it down and call a professional. Continuing to run it can make the problem worse and may lead to more costly damage. We can inspect it safely and help you avoid a bigger repair bill.
- How much does a furnace no-heating diagnostic cost?
The cost depends on the system and the symptoms, but we pride ourselves on offering fair, honest pricing with unbeatable rates. Before we move forward with any repair, we explain what we found and what it will take to fix it. No surprises. No pressure. Just straightforward service from licensed and insured technicians who respect your home and your budget.
- Why should I choose Dr. Shox Heat-n-Air for furnace repair and diagnostics?
We are a local HVAC company serving the Memphis metro area, plus nearby communities in Mississippi and Arkansas. Since 2024, we have built our name on consistency, reliability, fairness, and honesty. We focus on residential heating and air systems, and all our services are backed by a 1-year labor warranty. When you call us, you get experienced help, clear communication, and real solutions. If your furnace is not heating, contact Dr. Shox Heat-n-Air today to schedule your diagnostic and get your comfort back.
Why Homeowners Trust Dr. Shox Heat-n-Air
Real feedback on honest service, fair pricing, and fixes that keep homes comfortable
"Nisia did a great job! He was very professional and extremely thorough. The next time I have and HVAC issue I’m calling him!!"
"He was on time he did things that he didn't have to do and he stayed into the job was finished and seriously the best service I ever had seriously"
"Quick and efficient. Great communication and professionalism 10/10"
"Very knowledgeable and affordable, my air was up and running in no time."
"Quick, great customer service!"
"Professional,affordable and trustworthy. Thank you for a great job!!"
"I must say Dr. Shox is clutch. My mom's AC went out yesterday, so I decided to give him a call this morning. Not only was he available to come today. The AC is back blowing snowballs. Very respectful young man and prices were unexpectedly reasonable. So with all that said if you have any problems with heating and air, I would definitely recommend giving him a call."
"Incredibly helpful and informative. Didn’t just fix the problem, gave helpful info to help me understand the “why” of what was going on. For sure made me a lifetime customer"
"Super responsive and great to work with!"
"Dr. Shox Heat-n-Air provided outstanding service from start to finish. They were prompt, professional, and extremely knowledgeable. The issue was diagnosed quickly and fixed right the first time. Pricing was fair and communication was clear throughout the entire process. I highly recommend them to anyone needing reliable HVAC service."
"He did great work. Will definitely use again."
"Excellent service."
"Thank you from your service in telling me what was wrong and breaking it down to me so I know what to do next time"
"Great work and good person"
"Nice. Professional. Good job!"
"The tech was very knowledgeable and eagerly shares what he found. He sejemed to be a people person and enjoyed his job."
"GREAT JOB! Knowledgeable, efficient, and most importantly, effective."
"Great service, very professional. Ensured accurate service"
"This Company is Very Honest and very Helpful. They told me exactly what I needed to do concerning my THERMOSTAT. It worked just like he said. He saved me a service fee and possibly more expenses. Mr Shock is a professional and knows what he does. I highly recommend this Company to anyone who needs AC SERVICES"
"Time efficient and does outstanding work.. THANK YOU 😁😁"
"Excellent service and reliable! You will not be disappointed! 10/10!!!!"
"Great service"
"On time accurate very detailed about what's happening with the unit great job"
"Awesome service! Quickly responds, keeps his word, professional, and will definitely refer him to anyone!"
"Great Service , Very Professional and informative"
"I highly recommend Dr. Shox Heat-n-Air! He was referred by my warranty company and what a blessing to find that an honest company still exist! Prompt and courteous service with complete transparency on work that was done and the cost was very affordable compared to other big name companies! I appreciated being treated as a valued customer by a very knowledgeable tradesman. Communication was perfect and respectful, so if you need help night, or day "Do Not Hesitate to call Dr. Shox!" I will have all my hvac's preventative maintenance and repair done Only by Dr. Shox Heat-n-Air! Thanks again Mr. Shawki for your support and hard work."
"Dr. Shox Heat-n- Air is the best super reliable he had great communication skills and got the job done if I could give him 6 stars I would I highly recommend him."
"Shawki Madyun did an excellent job through Liberty Home Guard. He was professional, knowledgeable, and very courteous from start to finish."
"Great work"
"Amazing company"
"10/10 Great customer service, I just found my new heat and air doctor. Not to mention came out in the ice and snow, got stuck in it and still made it his priority to come and get the job done. Everything was excellent! Greatly appreciated him."
"Dr. Shox was so knowledgeable they came on time for appointment and fixed my heat with no problem i really appreciate the promptness"
"Great Job!!"
"Excellent work!!"
"We had a serious HVAC issue the other day when it was 95+ degrees and Shox helped us figure out what we needed to get things squared away for a great price!"
"Did a great job"
"The technician was very professional and knowledgeable. He was very detailed with his explanation of what was going on with my unit. Friendly as well. I would definitely use him again."
"Great job at what he do"
"My experience with Dr. Shock was more than worth it. It was a hot summer, and he definitely delivered on quality and service. Absolutely deserves the stars."
"Great service and excellent commutation .Very informative"
"Great service. Very professional and reasonably priced. Would definitely do business with again."
"This guy was very informative and friendly. He explained things in detail and didn't rush."
"Excellent work professional"
"Amazing job great"
"Did a GREAT JOB!"
"On a last minute call By The Way DR.shox's A+ service He came by and provided excellent service from the moment I contacted the company. They arrived promptly for the appointment, assessed my needs, and clearly explained everything while patiently answering my questions. Their expertise was evident in their efficient and precise work. I was impressed by their attention to detail and commitment to quality, including providing tips for system maintenance. Thanks , my home is comfortable, and I highly recommend them and the company"
"Technician is very professional and knowledgeable."
"Thank you for your fast response and service."
"I had an excellent experience with Dr. Shox Heat n Air! After my air unit went out, they came through and did a wonderful job getting me back up and running! The technician was incredibly knowledgeable, took the time to explain everything clearly, and handled the repair with care and precision. On top of that, he was respectful, professional, and very detail-oriented. I truly appreciated the quality of the service and the peace of mind it brought me. Highly recommend this company if you’re looking for reliable and skilled HVAC service!"
"Great Job!!!"
"Great Job!!"
"His customer service is excellent. Very friendly. He does a great job and explains everything to you. Book him!!"
"Great work."
"Fast and knows exactly what he doing . Highly recommend… 10000/10"
"Great job and he finished in a timely manner very professional..."
"Extremely positive and very respectful and positive vibes"
"Awesome job! He knew what the issue was and solved it in a timely manner"
"Very professional. Will go above and beyound to get your ac fixed. He explained what was wrong with my unit so I could understand. I appreciate how thorough he is."
"Dr Shox very professional and knowledgeable. Air unit repaired in the most efficient and quality manner."
"Great service, fully knowledgeable, explained diagnostic, fast and very helpful. Very much recommend 👌"
"They were awesome!!"
"Very thorough and professional."
"The Dr. Was wonderful. Knowledge, honest and extremely helpful at a fair price."
"Man this company went above and beyond,my AC went out and Shawki the owner came out and fixed me right up,great pricing great customer service! Highly recommend"
"Fast service on a Sunday night.. Super friendly and explains as he goes.."
"Great service very detailed"
"Wonderful person excellent Business, Thanks for everything"
"One of a kind guy was in and out with very reasonable prices. Will be my go to hvac tech from now on."
"Great experience, very prompt, efficient, and detailed. I would highly recommend for services."
"Shox Dr, AKA Mr Shawki, Showed up on time and went through a thorough analysis and inspection of my AC units, troubleshooting all areas until he satisfactorily discovered the problem. He then repaired and serviced the system with great care. He was very professional, consulting the exact charts for my make and model to be sure he followed the manufacturers recommendations. He also added explanations for the things he was checking. In a short time he had our air conditioning systems fixed and providing cool comfort throughout the home. On Saturday morning of Easter weekend! What a relief for us! We will be using him again! I highly recommend him for your AC service and repair.! J.C"
"Shawki Madyun is the absolute best, he was so professional and knowledgeable. I would definitely do business with him again, If you have any heating and air conditioning needs he’s the guy you want to call."
".Awesome work"
"Great service, knowledgeable technician, Economical price. I will definitely use him again.."
"He's 💯 He did the job right"
"Came back twice to make sure the job was done!"
"punctual and professional! great experience"
"Very professional, throrough and fairly priced!"
"Always available and reliable. Quotes are affordable and does great work"
"Very knowledgeable about what he is doing."
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"Honest, professional and went above and beyond my expectations."
"I reached out to Shawki at 10pm on Friday night, and he was at my door at 10am the next morning. He diagnosed the problem and had my units running again in 15 minutes. Super nice guy. Highly recommend."
"Great service"
"Shawki is dependable, trustworthy, and uses fair & honest pricing. I highly recommend Dr. Shox for home and small business HVAC service!"
"He was an amazing help. He fixed my heating unit in a reasonable amount of time and pricing"
"Very friendly"
"Mr. Shawki is a very good worker"
"Dr. Shox was a great HVAC technician! Knowledgeable, cautious, and effective."
"Very thorough, honest and experienced. I recommend him highly."
"Professional job well done. Thank you!"
"Punctual, friendly and efficient! Great service!"
"This man knows his stuff. He takes great care of his customers too. Always goes the extra mile. If you're looking for a knowledgeable and trustworthy technician look no further."
"Dr. Shox Heat-n-Air provides dependable service with skilled technicians who consistently meet our expectations and help us maintain customer satisfaction."
"Awesome service great work all around great customer service and support"
"Dr. Shox is skilled in HVAC and actually cares. He’ll explain his work to you and will also explain how to keep your system working at its best."
"Very fast service and very professional."
"He did a great job and was very nice and professional."
"Such professional work done. I had a complete remodel of my AC unit and he spent just a few hours getting it done and it ran perfectly right after! Myself in my company thinks him!"
"Very professional and helpful,would use them again ."
"Great service"
"Great service Affordable"
"Definitely recommend"
"Hey tech was great! Did a great job quickly and effectively!"
"Dependable and great service. I’ve used Dr. Shox on two houses within the year and I’m grateful for his work and superb prices."
"Quick to respond, professional, knowledgeable, kind and courteous. Have already recommended his services twice."
"Shawki is always clean,timely and reliable. Never in a rush to leave until he is satisfied with his job performance."
"Dr. Shox Heat n Air! My air and heat is back is back on thanks to Mr. Shox. He took his time to explain exactly what was going on with the system. He is very knowledgeable and got the job done! Thanks again!"
"Once again Shawki is the best!! I will never never ever call anyone but Shawki. Plus he’s a heck of a guy"
"Fantastic service! My air unit was badly damaged, and they fixed it quickly and thoroughly. The technician was knowledgeable, respectful, and very detail-oriented. Highly recommend!"
"Knowledgeable and Professional"
"My air conditioning went out Early in the day So naturally I got in contact with him. He was busy on another job But told me he would come after. The job had him busy all the way until almost midnight. Yet he still Came to my house right after To get my air conditioning working. Definitely grateful."
"Wonderful man and does wonderful work!"
"You should try hvac service they are the best,they done a great job for me last week."
"Dr. Shox (Shawki) is an honest businessman with a strong work ethic. He goes above and beyond to both educate and repair the system. AC work can be a hassle, and I've been raked over the coals before. However, this company is transparent: you get more than what you pay for, you don't get up-sold unless it's a genuine recommendation, and you never end up Shoxed at the price."
"Absolutely outstanding service! My AC went out during one of the hottest days of the year, and came through with quick, professional, and honest service. They arrived on time, diagnosed the issue quickly, explained everything clearly, and had the system back up and running in no time."
"Dr.Shox was great professional and efficient. He also did everything in a timely manner 10 outta 10 I do recommend"
"He is an affordable…they jobs done and the are very professional I will use them again"
"He was great and pleasant and very professional"
"Very professional he came out and got the job done in a timely manner"
"He was fantastic, (Shawki) he knew his job well, very professional. He explained everything in detail. He identified issues and resolved what he could being that the HVAC system is 45 years old. I would recommend him to anyone. James A Thomas Jr 1896 Peabody ave. Unit 15 Peabody place apartments. Thank him again for me."
"Called Dr. Shox to repair my mom’s furnace and I couldn’t be happier with the results! Fast and friendly service at a fair price. Highly recommend!"
"Shawki is wonderful. He took his time and tested all part of my HVAC to make sure that all part were working properly. He was timely and honest. He explained everything to me so that I know what was wrong with my unit. I would definitely use again and recommend."
"Great experience. Very professional. Excellent work."
"Very prompt, professional, thorough and great communication. I do recommend Dr Shox Heat-n-air."
"10/10 recommend!! Good service & reasonable. Professional service and great quality work!!"
"Thank you so much for getting my heat back up and running during our snow day. Your customer service and skills made our experience an awesome one I would recommend Dr. Shox to my family and friends he was fast friendly and got my heat up and running in no time ."
"Shawki is the consummate professional. His entire service is 100% perfect and an incredible value. Very knowledgeable and not one to ‘sell you something’ you don’t need. I cannot recommend him enough"
Restore Your Heat Today
Call Dr. Shox Heat-n-Air now for fast, honest furnace diagnosis and reliable home comfort.