Generator Repair

When your backup generator fails to perform, you need a fast and reliable repair service. Barney’s Heating and Air provides expert generator repair for all makes and models in Clarksville, TN.

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Top Generator Repair Company in Clarksville, TN

A malfunctioning generator offers no protection when the power goes out. Barney’s Heating and Air is the trusted choice in Clarksville for prompt and professional generator repair services. Our technicians have the expertise to diagnose and fix any issue, from a simple starting problem to a complex electrical fault. We understand the urgency of having a reliable backup power source, especially before a storm. Our team is committed to restoring your generator’s functionality quickly and effectively. We work on all major generator brands, ensuring your investment is ready to perform when you need it most. Trust us to get your backup power system back online.

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Dustin Trombley
July 22, 2025

Came out quickly. Solved multiple problems and returned the next day to solve more problems. Will use again. Thank you!

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Zachary Lane
July 2, 2025

Great service

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Royce Robinson
June 25, 2025

Had a great experience they worked on my mini split unit for my hair salon I highly recommend people schedule a consultantion and getting all your air problems fixed by them!

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K D
June 25, 2025

A/C had been out for a couple days. Heat index 105° , 90 ° in house. I called 15 + HVAC companies and the earliest appointment time anybody could come was a week away. I called Barneys . He shot me straight and told me " I'll get you up and going today but it's going to be in the evening." He showed up about 7 pm which is perfectly fine as it was hot. He fixed the problem in 15 mins ( needed refrigerant ) He charged a very fair price. He stands by his word. LIFESAVER!! VERY COOL NOW!!!

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Jayme Dix
June 25, 2025

I am very pleased with this company and the service provided. I appreciate how smooth and hassle-free the whole process was. They really go above and beyond for their customers. I would recommend jake and his team to all my friends and family. Thanks jake for your great service.

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TY STERLING
June 22, 2025

Hey if you need good reliable service this is the place my service guy didn't quit til it was a success. Thank Jake. I'm another satisfied customer. 👍🏾👍🏾👍🏾

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Kathryn Atkins
June 11, 2025

Was a pleasure! I’m the owner of Grace’s Cleaning Industry, LLC and I manage airbnbs. He explained and did the job the way it was supposed to be done with reassurance of labor warranties plus rechecks. Would recommend!

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natasha cross
June 6, 2025

Loved working with Jake. Was able to find the problem about my ac the night before & had it fixed the next morning! & reasonably priced as well. Thank you for your service!

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Incredibly responsive, communicative and diligent service. I highly recommend for anyone who needs work on their home. They also showed genuine compassion and advocated for change with our landlord when they worked on our A/C unit.

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Service was quick and he was very professional and gave me great follow up information going forward on handling my cooling and heating needs

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Joyce Miller
April 29, 2025

Jake the owner changed out my unit by himself in a very efficient time, very kind, and explained why my old unit went out, he was the fairest price I could find for getting the main job done! Hard worker replaced my unit in 88° weather, I will continue to use his company as my go too for my home and future needs

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Susan Bumpus
April 17, 2025

Dependable and reasonable.

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Shachar Crouvi
April 5, 2025

Great service

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Nathan Delancey
April 1, 2025

Straightforward and upfront

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Dylan Vannote
February 26, 2025

Respectful and make sure everything and working and dose the job right best company to do business with

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Kimberly McCormick
February 24, 2025

I called around 6pm with no heat. Jake offered same day and next day options. his price was very cost efficient. I cannot thank this company enough for the quick service changing my motor-board. He communicated very professionally with him.

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Angela Vestal
February 23, 2025

This crew helped get my heat working within 2 hours of me calling them. They knew exactly what to ask to come prepared to make the repair. I cannot thank these men enough for restoring my heat in this cold weather.

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Andrea Doan
January 14, 2025

Jake and the team were excellent! They were able to get the unit installed and made all requested adjustments, even after the installation! They will definitely be our "GO TO" for any heating needs!

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Michael Redmon
January 7, 2025

The best. Quick and reliable

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Maria
January 1, 2025

Great customer service!

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Keith Morgan
November 13, 2024

Reliable, honest, affordable, professional expert on hvac services

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MIi T.V.
November 6, 2024

Great and prompt service

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Robert Pociask
September 10, 2024

Great guys awesome job

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Sondra H.
September 7, 2024

I contacted them and within 45 minutes Jacob arrived ready and prepared to look at our A/c unit. Fair priced, friendly, efficient and careful to not misdiagnose the issue.

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Autumn W
August 28, 2024

Excellent service! I called After 5 PM with a down AC unit looking for a diagnostic visit with possible fix. He offered same day and next day options. When he came out and completed the diagnostic, he said he could fix it right away. It Took him less than 30 minutes to get my unit running. Plus it was extremely affordable! Highly recommend, and will definitely use for any future services. Thank you so much!

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Nicole Posley
August 16, 2024

They came out located the problem cleaned it and the tech mark did an amazing job. He was friendly and fast and he kept me updated on what he was doing . 10/10 highly recommend

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Jordon Kirby
August 15, 2024
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Frederick watkins
July 8, 2024

Honest repair guy, fixed the issue quickly, went above and beyond

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DeEtte Story
July 8, 2024

Called the morning after July 4th and they were able to come out right away. He was prompt, courteous, and communicated updates from the time I requested him to come out to arrival and the fix. He quickly assessed and fixed the issue we were having with our outside unit and verified it was working before leaving. He also offered suggestions for another unrelated issue I am having with our damper. I plan to reach out again for any future a/c needs. Thank you!

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Jonathon Dunning
June 30, 2024

Great job

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Zac Lopez
June 29, 2024

Fast cheap and nice came same day to fix it

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Jordan Marin
June 28, 2024

Extraordinarily helpful! Arrived, diagnosed and repaired our AC promptly all in one trip and for a great price! I will use them for all of our hvac repairs from now on.

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Raymond Gonzalez
June 28, 2024

Jay was awesome, he got my mother's AC unit working the very next day after I called him. Highly recommend his services. Stand up guy!!

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J
June 3, 2024

Great experience. They showed up when they said they would and did a great job installing 2 mini split units right where we needed them to go. I Highly recommend their service.

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Ben Gessner
March 26, 2024
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김윤성
March 13, 2024

They did really great job with very reasonable price. They were communicating very well with me compared to other HVAC companies that either don't answer the phone or don't even reply to text.

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Tom Jamison
January 22, 2024

Nice,professional,efficient job! Highly recommend for your HVAC needs!

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Tonia Marrero
January 1, 2024

Fantastic communication and fast service! I will be using Barney’s for future HVAC needs.

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Amy Burse
November 3, 2023
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Riley Phlipot
August 22, 2023
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Danny Bowen
July 3, 2023
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Wyatt Pelton
July 3, 2023

Needed service in a pinch and this company was there to help out immediately. If you’re looking to support a small, local business, and get it done right, look no further!

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HIGHLY RECOMMEND!!! My A/C went out late Friday night and not many companies were wanting to help and look at my unit until after the weekend and holiday was over, but Barney’s heating and air responded ASAP, and was here first thing in the morning on Saturday! The technician gave me an exact time and was here on time, other companies gave me a big time frame/window 8am-6pm and that just didn’t work for us. This company is affordable and willing to work with you. Definitely will call them again!! Thank you!

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Kimberly Thomas
June 29, 2023

Didn't stopped coming to work on it till it was fully fixed highly recommend

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Gene Carroll
June 25, 2023

Service was AMAZING!!! Especially on a weekend. Found the issue right away and had our A/C running again. I would highly recommend Barney's Heating and Air over anyone I've dealt with in clarksville. Price was great. We are enrolling in his service care for twice a year service for a great price!!!! Again I would recommend him over anyone!!!

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Mark Carrillo
June 14, 2023

These guys are great!

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Jeanna Strange
June 10, 2023

Barney and his team was professional, on time, and worked with the other foreman (foundation repair) on site in order to get my foundation repaired correctly and removed, then reinstalled new ductwork after the foundation was repaired. Due to his efforts, I was able to have 2 projects done at the same time and for a fraction of the cost in a total of 2 days. Highly recommend.

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Harshal Patel
June 6, 2023

Nice service

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Jessica Adams
May 25, 2023
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John L
May 20, 2023
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Ronald Heiby
May 18, 2023

Technician knew immediately what the problem was, had the needed parts with him, and fixed the problem in less than an hour.

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D N
May 17, 2023

This isn’t just a review, it’s a debt of personal gratitude. These guys came out and replaced the HVAC system in my rental house in absolutely no time flat. They were able to work with me in the kind of way humans should work with one other, when it really counts. I am extremely grateful for their help with this project, and they have 100% earned all of my future business - barre none

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Ron Ravelo
May 12, 2023

They showed up and did their job. Very responsive

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Mitch Powlas
April 14, 2023

First time (in this house) getting our heat pump inspected. Technician was detailed in explaining what was both good & bad about our 12 year-old system. He explained that our system was still functional but also showed us a part that might fail in the future. He tested the part in our presence & gave us a fair price for replacement (which we did). We were comfortable enough with the service that we are likely to purchase a service/maintenance agreement this Fall.

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Ethan Thomas
March 29, 2023

Excellent service from an honest professional. No one likes having to get an AC replaced, but Barney’s makes it less painful. Extremely responsive (at any time you need him), he will be honest, fair, and provide you a range of options without the up-sale you’d get elsewhere. His work is top notch quality, this is the 3rd time we have used him for our rentals and will continue to do so in the future. Highly recommend for your AC/HVAC needs.

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LBP
March 11, 2023

PLUMBERS, Too! I just bought a house and didn’t know the pipes were clogged, the tub had a slow flow, and that the faucets were offset. In addition to heating and cooling, Jake has plumbers on hand. He and his crew did a good job, were friendly, and easy to communicate with.

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Courtney Briggs
August 15, 2022

The communication, fast response, and customer service is what will bring me back. I will definitely call them again to schedule my yearly unit cleaning and any repairs that come up. Highly recommend! Thank you guys!

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Courtney Emerton
August 13, 2022
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Toni Beard
August 3, 2022

Amazing!!!! Fast response! Same day service! Very very reasonable prices! Loved his mannerisms when you call his phone! Very respectful He knew what was wrong with my hvac system within a few mins. Purchased my parts and fixed my unit same day!!!! I appreciate this company!!! Would recommend to all my friends and family!

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I don’t think any else would have come out any quicker or for a better price than these guys. Did a wonderful job and were straight forward and honest

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Vanessa Renaud
June 4, 2022

Barney took really good care of my Mother. She is legally blind and he was so considerate of her condition. He was fast and efficient. Fantastic service. I would recommend him to anyone. Great job Barney!!!

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Alex Lloyd
June 2, 2022

When my ac broke at 5pm I called Barneys and they came out to fix it that night! He was friendly, fast, and very professional! Super impressed with this company and definitely recommend them !

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Donna Pelletier
May 15, 2022

Jacob & Bobby were friendly & caring and did an excellent job diagnosing & repairing our AC. Highly recommended.

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Chuck Willis
May 12, 2022

After looking for estimates that were overpriced I called these guys and they came right out to my place and fixed it on the spot for a great price they are down to earth and good people!!!

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Caitlin Waters
May 6, 2022

Great experience! Very professional and outstanding customer service!

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Jordan Tepper
May 5, 2022

Quick Availability! With great customer service!

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Sean OBryan
April 30, 2022
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Sandy Callahan
April 15, 2022

Barney’s heating and air did a great job I didn’t have to lift a finger greatly appreciate they took care of my warranty and all!! Thank you very much..

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Danny Sheffey
March 29, 2022

Highly recommend Barney and his team. They were super responsive and helpful. Replaced my outdoor and indoor unit with no issues. Will be using them in the future for all HVAC services.

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chad gilleney
March 1, 2022

Awesome customer service! I called with a problem with my furnace, and he helped me fix it over the phone. Southern hospitality at it's finest. I'm scheduling a furnace service ASAP from him because I definitely want to give him my business!

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Shane Y
January 11, 2022

Local company with great working knowledge. We had a heat bank out in our furnace which they troubleshot and fixed within the week (had to order parts). Heat is now working in the house and we appreciate the service!

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Jamie Davis
November 29, 2021

I was having problems with my HVAC system and I called these guys to come check it out. Bobby and Jacob are very down to Earth guys. Bobby was very upfront about what issues I had with my system and gave me recommendations without feeling like they were trying to push anything on me. I was impressed with the knowledge he had and how fair their pricing was. I'm a single woman that lives alone with my children and I did not once feel uncomfortable with them or feel like they were trying to get over on me. They ended up installing a new unit in my home and did an amazing job. I have not had one issue with it since. I would def. recommend this company to anyone I know! Thank you guys!!

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Hunter Dechau
August 5, 2021
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Kyle Dickson
August 5, 2021

Jake was awesome! Very professional and very easy to work with. Communication was the best I’ve ever had. Will go back and call again. I would highly recommend to friends and family.

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Anitra Alexander
August 3, 2021

I recommend this Service to EVERYONE they are on time and do GREAT WORK at a AFFORDABLE PRICE....

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lauxes1981
July 10, 2021

Mr Jake is an extremely professional guy. Communication was on point and everything they quoted was transparent and completed to my full satisfaction. Very trustworthy guy. Hope I don't need him again, but would 100% not hesitate to use and recommend!!

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T. Jackson
June 25, 2021

Jacob and Bob are very professional and have met my every need from start to finish. Had a new A/C, thermostat and ductwork installed at a great value and my house is ice cold again. Thank you guys for all you do and I look forward to seeing you at maintenance visit.

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Scott Webb
June 21, 2021

Great service very professional and timely response. Would recommend them for all of your HVAC concerns

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James Proctor
June 15, 2021
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Benjamin Haley
June 13, 2021

Very good company. The owner was very knowledgeable and explained everything they were going to be doing. It was done in a timely manner. Barney’s heating $ air now has a forever customer!!!

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Ray Fisher
June 12, 2021

Barney’s hands down is the best A/C company I have used . The guys were friendly ,Professional and honest about any questions I had. Forever a customer and will recommend to everyone!

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Carly Pierce
June 8, 2021
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Brittany Smith
May 25, 2021

Earned every star! Great service in a timely manner!

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Truck and Guns
May 25, 2021

I was having trouble installing an ecobee smart thermostat and gave them a call. They were able to come out the very next day. Although they had to sort out some issues with my thermostat wiring and ended up being at house longed than they expected, the gentlemen with polite and a pleasure to converse with. I think all things considered I was charged a fair price for the service they provided. I would definitely recommend this company for your all your HVAC needs.

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Brad Simmons
May 24, 2021

Went out of their way to help me out with my ac unit. Really good people i recommend these gentlemen 100% these guys know their profession for sure they explained everything that was going on and showed me what quality parts for heating and air conditioning was all about !

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Marissa (:
April 15, 2021

Called around for pricing to get my AC UNIT worked on. The owner was knowledgeable and was able to get someone out there that day for me. Very professional and hard workers. 100% will use them in the future!!

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Farrah Gordon
April 15, 2021
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A Google User
April 15, 2021

The owner Jacob took time to check everything and explain what needed repaired. I got quoted 1200 from another bigger company but Barnes came and repaired my air conditioner for $700 the same day!! I was beyond impressed! So glad I found my new hvac company.

Generator Repair

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Services Offered
5-star reviews
customer satisfaction
units installed

Why Choose Barney’s Heating and Air for Generator Repair

When your generator needs repair, you need a service you can trust to respond quickly and work expertly. Barney’s Heating and Air is that service. Our technicians are factory trained to diagnose and repair a wide range of generator problems on all major brands. We understand the urgency of a failed backup power system and prioritize repair calls to get you back online fast. We provide clear explanations and transparent, upfront pricing for all repairs. Our commitment to quality parts and meticulous workmanship ensures a reliable and lasting fix. Choose us to protect your investment and ensure your generator is ready for any emergency.

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Need Emergency HVAC Service? We’re Available 24/7!

Most Common Generator Repair Questions

When your reliable backup power source suddenly isn’t reliable, it’s natural to have concerns and questions. A malfunctioning generator can be stressful, especially with a storm on the horizon. Understanding the common issues and the repair process can help you feel more prepared and confident in the solution.

This is a frustrating and surprisingly common scenario that points to a problem somewhere between the generator and your home’s electrical panel. If the generator engine is running smoothly, it means the issue is likely not mechanical. The problem lies within the electrical components of the system. The first and simplest thing to check is the generator’s own circuit breaker. Most generators have a main breaker located on the unit itself. If this breaker has tripped, it will prevent any power from leaving the generator, even though the engine is running. Resetting this breaker can sometimes solve the problem.

If the generator’s breaker is fine, the next place to look is the automatic transfer switch (ATS). The ATS is the device that physically switches your home’s power source from the utility grid to the generator. A transfer switch can fail to operate for several reasons. It could have a blown fuse, a tripped internal breaker, or a faulty control board. The switching mechanism itself, called a contactor, can also become stuck or fail. Our technicians have the electrical expertise to safely open the ATS and diagnose these types of internal faults. This is not something a homeowner should ever attempt themselves due to the high voltages involved.

Another possibility is a problem with the wiring that connects the generator to the transfer switch or the transfer switch to your main electrical panel. A loose connection, a damaged wire, or corrosion can interrupt the flow of electricity. Our technicians will meticulously inspect and test all the electrical connections and conduits as part of the diagnostic process. We use specialized electrical meters to trace the path of the current and identify exactly where the interruption is occurring. This systematic approach ensures we find the precise point of failure and restore power to your home.

A generator engine that is running rough, surging, or stalling often indicates a problem with the fuel and air mixture. The most common cause is a dirty or clogged carburetor. Over time, varnish and deposits from fuel can build up inside the carburetor’s tiny passages, restricting the flow of fuel. This “starves” the engine of the fuel it needs, causing it to run erratically. This is more common in gasoline powered portable generators but can also affect the demand regulators on natural gas and propane units. A thorough cleaning of the carburetor or fuel regulator by a qualified technician is often required to fix this.

An inconsistent fuel supply can also lead to a rough running engine. For a propane fueled generator, this could be caused by a failing regulator on the propane tank, which is not delivering fuel at a consistent pressure. For a natural gas unit, there could be an issue with the utility supply or the home’s gas meter. Our technicians can test the fuel pressure at the generator to determine if it is receiving a steady and adequate supply. Any blockages in the fuel line or a dirty fuel filter can also contribute to this problem by restricting flow.

The engine’s governor is another component that can cause surging. The governor’s job is to maintain a constant engine speed (RPM) as the electrical load on the generator changes. If the governor is malfunctioning or out of adjustment, it can cause the engine speed to hunt up and down, which you will hear as a surging sound. This also results in unstable voltage output, which can be damaging to your appliances. Adjusting or repairing the governor is a delicate task that requires specialized knowledge of the engine’s mechanics to ensure it runs at the precise speed needed for clean power generation.

A generator repair service call from Barney’s Heating and Air is a comprehensive process designed to get your system back in perfect working order. The service begins with a professional and courteous technician arriving at your home on time. They will start by discussing the problem with you to understand the symptoms you’ve observed. This is followed by a complete diagnostic inspection of the generator, the automatic transfer switch, the battery, and all related fuel and electrical systems. We use a systematic approach to ensure we accurately identify the root cause of the problem, not just the symptoms.

Once the diagnosis is complete, our technician will provide you with a clear, detailed explanation of the issue. We will outline the specific repairs that are needed to correct the problem. You will then receive a firm, upfront price for the total cost of the repair, including all parts and labor. We believe in transparent pricing with no hidden fees, so you can make an informed decision with confidence. We will not perform any work until you have reviewed and approved the quote. This puts you in complete control of the repair process.

After you approve the repair, our technician will get to work. We use only high quality parts and perform all repairs according to manufacturer specifications and the highest industry standards. Once the repair is finished, we conduct a full system test. We start the generator, let it run, and simulate a power outage to ensure the automatic transfer switch functions correctly and that your home is receiving power. We do not consider the job done until we have verified that your entire backup power system is operating flawlessly and is ready for the next outage.

Deciding whether to repair or replace an old generator depends on several key factors. The first thing to consider is the overall condition of the unit and the nature of the required repair. If the generator has been well maintained and the problem is a relatively minor one, such as a faulty sensor or a bad battery, a repair is almost always the most cost effective option. If the repair cost is only a small fraction of the price of a new unit, it makes financial sense to fix it. Our technicians can give you an honest assessment of the generator’s condition to help you make this decision.

However, if the generator is suffering from a major mechanical failure, such as a seized engine or a failed rotor or stator, the repair costs can be substantial. In these cases, the cost of the repair might approach 50% or more of the cost of a new generator. When faced with such a significant expense, it is often more prudent to invest that money into a new, more efficient unit. A new generator will come with a full manufacturer’s warranty, modern features, and the promise of many years of reliable service. Pouring a large sum of money into a very old unit with other aging components can be a risky investment.

You should also consider the age and parts availability for your generator. For very old or obscure models, finding the correct replacement parts can be difficult and expensive, if not impossible. Technology has also advanced significantly in recent years. Newer generators are often quieter, more fuel efficient, and have more advanced control systems than older models. If your current generator is over 15 to 20 years old and requires a major repair, the benefits of upgrading to a new, modern system often outweigh the cost of fixing the old one.

Any new or unusual noise coming from your generator should be investigated by a professional technician. Different noises can indicate different problems, and it’s important to identify the cause. A loud rattling or banging noise could be a sign of a loose mechanical component. This might be something as simple as a loose housing panel, or it could be something more serious like a problem with the engine’s pistons, bearings, or flywheel. If you hear a noise like this, it is best to shut the generator down safely to prevent further damage and call for service.

A high pitched squealing or grinding sound often points to a problem with a bearing. The generator’s engine and the alternator have several bearings that allow parts to rotate smoothly. When a bearing starts to fail, it will often create a distinct squealing or grinding noise that gets worse as the unit runs. Continuing to run a generator with a failing bearing can lead to a catastrophic failure of the engine or alternator. This is a repair that should be addressed immediately to avoid a much more expensive replacement down the road.

If you hear a loud backfiring or popping sound from the exhaust, it usually indicates an issue with the engine’s combustion. This could be caused by a problem with the fuel to air mixture, an ignition timing issue, or carbon buildup in the engine. While it may not seem as immediately critical as a mechanical banging noise, it is a sign that the engine is not running efficiently and could be sustaining damage. No matter what the strange noise is, the safest course of action is to not run the generator until it has been inspected by a qualified repair technician from Barney’s Heating and Air.

At Barney’s Heating and Air, we understand that a broken generator is a serious concern, especially when severe weather is in the forecast. We prioritize generator repair calls and make every effort to provide prompt service to our customers in Clarksville and the surrounding areas. We maintain a dedicated team of skilled technicians ready to respond to your needs. In many cases, we can offer same day or next day service for repair calls. Our goal is to get your backup power system back online as quickly as possible, restoring your peace of mind.

The speed of our response can sometimes depend on call volume, especially during periods of high demand like before a major storm system is predicted to arrive. During these times, we operate on a first come, first served basis, so we encourage you to call for service as soon as you notice a problem. Do not wait until the day before the storm hits, as our schedule may be completely full. Proactive service is always best. We do our best to accommodate all emergency repair requests and will always give you an accurate and honest estimate of our arrival time when you call to schedule.

To help us provide the fastest possible service, it is helpful if you can provide us with the make and model of your generator when you call. This information allows us to ensure the dispatched technician is familiar with your specific unit and can bring any likely needed parts with them. Our commitment is to provide not just fast service, but effective and efficient service. We want to solve your problem on the first visit whenever possible. You can count on our team to be there for you when you need us most.

Work With The Top Generator Repair Near You

Don’t be left in the dark when the next outage occurs. If your generator is not working correctly, contact Barney’s Heating and Air for fast, expert repair service and a free estimate.