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Your Trusted HVAC Partner in Fort Walton Beach
Mills Heating & Air has been a trusted provider of HVAC services on the Emerald Coast for four decades. As a veteran-owned, locally-operated business, we combine military discipline with community commitment to deliver exceptional heating, cooling, and air quality solutions. Our NATE-certified technicians specialize in AC and furnace repairs, installations, and maintenance for residential and commercial clients. Backed by Carrier Factory Authorized Dealer status, we maintain rigorous training standards to ensure optimal system performance.

With over 10,000 annual service calls and a 100% satisfaction guarantee, we prioritize transparent pricing, energy-efficient technology, and personalized comfort solutions. Our team lives locally, supporting regional schools and charities while maintaining three convenient service locations across Northwest Florida.
Services
AC Repair AC Installation Ductless AC Systems Furnace Repair Furnace Installation Heat Pump Repair Heat Pump Installation Duct Treatment Thermostats Planned Maintenance
Highlights and features
  • 40-year history of Emerald Coast HVAC service excellence
  • Veteran-owned business with military-grade work ethic
  • NATE-certified technicians for industry-leading standards
  • Carrier Factory Authorized Dealer with specialized training
  • 100% satisfaction guarantee on all HVAC work
Associations and certifications
  • NATE
  • Carrier Factory Authorized Dealer
Services
AC Repair
Our EPA and NATE-certified technicians repair all major AC brands with same-day service availability. We diagnose issues quickly and provide transparent pricing for residential and commercial cooling systems. With 40 years of experience, our team resolves common problems like refrigerant leaks, compressor failures, and thermostat malfunctions while maintaining manufacturer warranties.
Furnace Installation
As Carrier Factory Authorized Dealers, we install high-efficiency furnaces with customized solutions for different home sizes. Our Comfort Consultants assess heating needs and recommend ENERGY STAR-rated models that reduce utility costs. All installations include system optimization checks and manufacturer warranty registration to ensure long-term performance and customer satisfaction.
Planned Maintenance
Our preventive maintenance plans extend HVAC system lifespan through bi-annual professional servicing. Technicians clean components, check refrigerant levels, and calibrate thermostats to maintain peak efficiency. Regular maintenance reduces emergency repairs by 95% and preserves manufacturer warranties while improving indoor air quality through filter replacements and duct inspections.
Ductless AC Systems
We install versatile ductless cooling systems for homes and businesses without existing ductwork. These energy-efficient solutions provide zoned temperature control for garages, additions, and commercial spaces. Our technicians handle complete system design, mounting, and refrigerant line installation while offering smart thermostat integration for optimal comfort and energy savings.
Air Quality Solutions
Our EPA-registered air purification systems reduce allergens and contaminants using HEPA filtration and UV light technology. We install whole-home purifiers and dehumidifiers that integrate with existing HVAC systems to improve respiratory health. Duct treatment services eliminate mold and bacteria buildup, ensuring cleaner air circulation throughout residential and commercial properties.
Questions
What HVAC services do you offer?
We provide complete HVAC solutions including AC repair, furnace installation, heat pump services, ductless systems, air quality improvements, and preventive maintenance plans for residential and commercial properties.
Are your technicians certified?
All our technicians hold NATE certification, the HVAC industry's highest standard, and we maintain Carrier Factory Authorized Dealer status requiring ongoing specialized training.
Do you offer emergency HVAC service?
We provide same-day service for urgent HVAC issues during regular business hours but don't offer after-hours emergency repairs. Scheduled maintenance plans help prevent emergencies.
What financing options are available?
We offer 0% financing on qualifying Carrier systems with approved credit, along with seasonal promotions and rebates that can be combined with manufacturer incentives for qualified customers.
How can I improve indoor air quality?
Our air purification systems, dehumidifiers, and duct treatment services effectively reduce allergens and contaminants. We recommend whole-home purifiers with HEPA filters and UV light technology for maximum effectiveness.
Reviews (6)
Gig Panoff
May 15, 2022 Report
I cannot say enough about this company. If you're having a/c problems or need an entire new system like I did, you have to give these guys a call. They weren't the first ones to try and fix my a/c. No one else could get it done but they sure did! From start to finish they were very professional, polite, arrived on time, kept me informed, cleaned up after themselves , and finished the job in record time. And then stayed to make sure the system was working properly instead of just bolting! Great job guys, you've earned every praise I can give and my new a/c feels soooo good! Thanks!
Janice Lipscomb
Apr 02, 2022 Report
Customer service was fantastic. Had new ac/heat installed in two homes. Very professional. Great prices. Best place in town for your air conditioning work. Office staff very polite and f professional. Services: Install AC, Install thermostat, Heating system installation
Jamie Dwyer
Mar 23, 2022 Report
I have used Mills Heating & Air several times this year. They are always quick to respond, professional and reasonably priced. I would definitely recommend them to anyone in need of a new A/C or A/C maintenance. Services: Install AC, A/C system repair
Jamie Radcliff
Oct 10, 2021 Report
Totally professional! They were communicative and priced right. Installation team was great replacing our split unit. They were proactive and replacing a failed motherboard on the unit before it became an issue. I will use Mills again
Wally Dawkins
Aug 22, 2021 Report
On Monday August 2nd I scheduled an appointment with Mills AC to make repairs to an AC unit Mills installed and is still under warranty. I have now been without AC for 3 weeks in Destin, Florida. The office staff has given me the run around for 3 weeks and the service manager Brent will not call me back. It is unbelievable to me that you can't fix a customers AC for three weeks. A customer who spent thousands for you to install the unit less than 4 years ago. RIDICULOUS AND TOTALLY UNACCEPTABLE. 3 weeks later, Still waiting on Mills to repair the unit they installed.
William Jenkins
May 21, 2021 Report
I have used Mills twice for new AC units at my home as well as periodic repairs, and I have been pleased every time. Their prices are very competitive and their service is outstanding. They also have great "support" staff in the office that stay in contact and follow up during the process! Services: Install AC, A/C system maintenance