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21 Years
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Emergency
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Your Trusted HVAC Experts in Hattiesburg
Founded in 2005, Tri County Air Service has grown from a single service truck into a trusted regional HVAC provider serving Southern Mississippi. As a family-owned business, we prioritize relationships, integrity, and quality workmanship, offering heating, cooling, electrical, and insulation services. Our Carrier Factory Authorized Dealer status and NATE-certified technicians ensure expert solutions for homes and businesses.

With 24/7 availability, transparent pricing, and financing options, we focus on long-term solutions and community trust. Over two decades, weve built a reputation on fairness, professionalism, and reliable service, serving Hattiesburg, Wiggins, and surrounding counties. Customer testimonials highlight our prompt, courteous service and commitment to resolving HVAC challenges efficiently.
Services
AC Repair Heating Repair Heat Pumps Electrical Panels Insulation Installation Air Duct Cleaning Commercial HVAC Generator Installation
Served areas
  • Gulfport, MS, Hattiesburg, MS, Biloxi, MS, Purvis, MS, Lucedale, MS, Poplarville, MS, Wiggins, MS, D'Iberville, MS
Details
  • Year established: 2005
Highlights and features
  • Heating
  • Cooling
  • Air Quality
  • Electrical & Generators
  • Gas Fireplaces
  • Water Heaters
Associations and certifications
  • Carrier Factory Authorized Dealer
  • NATE-certified technicians
What people say
Very helpful Extremely professional Best air conditioning company Good work; good value Excellent communication
Services
HVAC Installation
We specialize in HVAC installation for residential and commercial properties, ensuring efficient, code-compliant setups. Our NATE-certified technicians use Carrier products to deliver tailored solutions, prioritizing energy efficiency and long-term reliability. From initial consultation to final testing, we guarantee seamless integration with your property's needs.
Emergency Repairs
Our 24/7 emergency repair service addresses urgent HVAC failures with rapid response times. Fully stocked vehicles enable on-site fixes for AC, heating, and electrical systems, minimizing downtime. Customers trust our licensed team to restore comfort swiftly, even in extreme weather conditions.
Air Duct Cleaning
Professional air duct cleaning improves indoor air quality and system efficiency. Using advanced equipment, we remove debris and contaminants from residential and commercial ductwork. Regular maintenance reduces energy costs and extends HVAC lifespan, ensuring healthier air circulation.
Electrical Services
From panel upgrades to generator installation, our licensed electricians handle residential and commercial electrical needs. We prioritize safety and code compliance, offering repairs, installations, and emergency services. Financing options make critical upgrades accessible without upfront financial strain.
Insulation Installation
We provide blown-in insulation services using cellulose and fiberglass materials to enhance thermal performance. Proper insulation reduces energy bills and maintains consistent indoor temperatures. Our experts assess and seal gaps, optimizing comfort in Mississippi's climate.
Questions
What HVAC services do you offer?
We provide AC repair, heating services, heat pumps, air duct cleaning, and HVAC installation for residential and commercial clients.
Are you available for emergencies?
Yes, our 24/7 emergency service responds promptly to HVAC and electrical crises with fully equipped vehicles.
Do you offer financing options?
We provide 0% financing for HVAC, electrical, and insulation projects to ease upfront costs.
Which areas do you serve?
We serve Hattiesburg, Wiggins, Stone County, Forrest County, and surrounding Gulf Coast communities.
Are your technicians certified?
Yes, we employ NATE-certified technicians and are a Carrier Factory Authorized Dealer.
Reviews (20)
Tracy Smith
Oct 26, 2024 Report
This company goes above and beyond to take care of their customers. Seth came and did my annual maintenance inspection. He is always courteous.
Patty H.
Oct 21, 2024 Report
Customer service was excellent. They went above and beyond helping my parents. I spoke with Pam, Ashley, and WG. They were nice and polite on all occasions. Dallas and all the other guys that replaced and repaired the units were awesome. Many thanks to all of you.
Daniel
Oct 12, 2024 Report
Jake came out, on time and thoroughly checked both hesting and collong systems, flushed lines, clean coils and tested capcitors. Dont wait until your a/c or heat fails. Great service at reasonable prices.
Fred Kately
Oct 08, 2024 Report
Seth's workmanship and attention to detail, is at and above demand. He is my serviceman as long as I have an AC UNIT. Stars. Seth did maintenance inspection in Pass Christian, Ms. area. Thanks for the service.
Aurelia Kirkland
Sep 30, 2024 Report
Jake did a great service job. Found a problem, brought it to my attention. Proposed a solution and then fixed said problem. My a/c is now running with 50% more output! Thanks Jake.
Tim
Sep 16, 2023 Report
Easy folks to deal with. Very friendly and professional. Can't recall all of their names but have enjoyed having them take care of our H/VAC issues and maintenance! Recently upgraded one of our units and they were the only folks we contacted due to our trust in their business and products! Services A/C system maintenance, Installation, Thermostat installation, HVAC repair.
Tony Blackwell
Sep 27, 2022 Report
Very honest and great integrity. Will definitely use again. another company tried to tell us needed a new compressor for $4,000 but Mr Hickman came and found a freon leak. Only cost less that $800.00 I am blessed and grateful.
Karl LaBauve
Jul 11, 2022 Report
Tri-county Air is the only service I have used since I moved to Stone County in 2006. They provide quality service at a competitive price. They are staffed with qualified technicians who go the extra mile to complete your work on time but paying attention to little details like trying not making a mess of their work area and cleaning up their work space when they are finished. Their service agreements give you peace of mind that your system is always operating at max efficiency. I would recommend them to anyone needing a new unit or their existing system needing service.
Sherry Pendarvis
May 16, 2022 Report
Fast, Courteous, and responsive. We use them for my home as well as my Aunt's. I would recommend them for all your ac/ heating and plumbing needs. I have used their services many times over the last couple of years. They are always the best in service and professionalism.
Ronald Landrum
Oct 06, 2021 Report
Bryant and his co-worker came and installed a duct-less unit in our camp house and performed an outstanding install. Would recommend Tri-county Services Installation, AC installation, Ductless heating and A/C services.
Tom White
Oct 04, 2021 Report
Installation went very smoothly. Technician very knowledgeable about his work. Very professional. Made sure that I was well versed in the unit before he left. Highly recommend this company. Services Installation, Install AC, Ductless heating & A/C services.
Rodney Holland
Aug 11, 2021 Report
Mason and Logan came out and helped get our ac working for us until we can get our new unit put in within the week. We are very pleased with the service and we will recommend this company to anyone. Thank you. Value.
Sabrina Chambers
May 06, 2021 Report
Bryant installed our units. Absolutely wonderful experience. He was very capable and conscientious of his work. He was extremely polite and respectful to me, and diligent in cleaning the areas he worked in. He was informative in explaining our new ac and the operation of it. I would not hesitate to recommend others. Services AC installation, Ductless heating and A/C services.
Sandra Allen
Apr 22, 2021 Report
This is a great company. They were professional and did a great job with my ac repair. The prices are fair and affordable. I will definitely be using them in the future. Services Cleaning, Repair HVAC.More
Willie Polk
Apr 13, 2021 Report
Service tech was awesome and very knowledgeable. The technician made sure all of my concerns were addressed thoroughly. In addition, very prompt and courteous on a Saturday afternoon. I will definitely recommend to friends and use again in the future. Services A/C system repair.
Amber P.
Jun 29, 2020 Report
We contacted Tri County Air on Monday to set up an appointment to have our unit serviced. The person we spoke to was very nice and efficient. On Friday, Bryant arrived and right off the bat was extremely friendly, as well as patient with our 2 small daughters who had a lot of questions for him. He was very thorough and explained to us what he was doing throughout the process. Once he was finished, he cleaned up after himself, and probably a little from our girls as well, ha! We are more than happy with the service we received and know that from here on out it will always be exceptional. Thank you!
Robin Finds
Jun 27, 2020 Report
We were very pleased they made after hours calls. The day before our tropical depression is supposed to hit, our air conditioner stopped cooling. The heat and humidity was already unbearable. He arrived and diagnosed the problem right away, and had it fixed within an hour. Mr. W.G. saved us from having to sleep without AC. Thank you! We will definitely call again.
Twyla Garner
Jun 22, 2020 Report
Its summertime and you need a NEW central heat/air unit. who do you call? Tri-County Air that's who! Called Friday and someone came out that day and gave me a quote and scheduled installation for Monday! The HVAC installation crew was very professional and knowledgeable of the work they did! Thank you guys for all your hard work in this heat! Couldn't have asked for a better!
Jessica DeSalvo
May 08, 2020 Report
Our AC unit wasn't cooling the house. After checking some stuff notice there was water leaking under the bottom. Called and they were prompt about coming out in just a few hours to work on the AC. Found out whoever installed it, didn't do a good job. Bryant was very professional and thorough with the job! Got us back cooling! Definitely recommend the services. Even got us rocking with a maintenance plan for future maintenance checks!
Betty Davis
Apr 15, 2017 Report
Tri-County is, by far, the best hvac company I have ever hired. They were prompt, knowledgeable, friendly and professional. These guys went way above and beyond what I expected. I cannot praise them enough.highly recommend!