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Heating and cooling service in Fort Walton Beach, Destin, Panama City Beach, & the surrounding area

40 Years of HVAC Service Excellence on Florida's Emerald Coast

Being at home should be the most relaxing part of your day. Let’s be honest; living in Florida with an AC that works properly is a necessity. At Mills Heating & Air, we provide convenient and affordable heating, air conditioning, and indoor air quality solutions to keep you comfortable year-round. Your comfort is our top priority, from when you call our friendly office staff to when our licensed service specialists address your HVAC needs. You can rest assured that our technicians are highly skilled, experienced, and up-to-date on all the latest HVAC training. We have transparent and competitive pricing with no hidden fees. Our service experts will quickly and thoroughly diagnose your system and offer the best recommendation for repair or replacement.

  • Quality Service You Can Trust
  • Transparent, Competitive Pricing
  • Veteran-Owned Business

HVAC Repairs

We repair the top AC brands and models for residential properties. Low-interest financing plans are available upon request.

A NATE-certified professional will diagnose your heat pump issue and provide a fixed-price quote for the work. We specialize in all of the most popular heat pump makes and models.

Our NATE-certified professionals repair all of the most popular furnace makes and models and resolve most heating issues in just one visit to your property.

HVAC Replacements

We're a Carrier Factory Authorized Dealer with 39 years of AC installation experience. We offer free estimates, low-interest financing, and the highest-quality replacements for residential properties of all sizes.

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A Comfort Consultant from our team will arrive in person to help you find the perfect heat pump system for your residential property. Low-interest financing is available. We're proud to be a Factory Authorized Dealer of Carrier.

We will send a certified Comfort Consultant to your home to assess your needs and share options and pricing on a range of residential furnace systems. Low-interest financing is available upon request.

We install the latest ductless AC systems for homes across the Emerald Coast. During your free estimate, we'll share options and pricing for a variety of ductless AC brands and models. Low-interest financing is available upon request.

HVAC Maintenance

We will send an expert technician to your property to clean and maintain your residential HVAC systems. We recommend signing up for our Planned Maintenance Service Plan for even more maintenance benefits!


We install the latest smart thermostats, including the Ecobee 3, the Ecobee 6, and Ecobee smart sensors which help reduce hot and cold spots around the home and reduce energy costs while you're away.

Can't find what you need? Give us a call.

We take thousands of residential service calls every year. If you do not see the service you need on our list, please call us at (850) 862-4796. We may still be able to help. We look forward to assisting you!

Customer Testimonial

I have nothing but praise for Mills Heating & Air!!

“My daughter came down to the beach house expecting friends the following day. Upon arrival, she found that the AC was OUT!! This was at 4 PM. I have used Mills for AC repairs for the past eight years. When I reported the situation, they very kindly sent a guy out at 6 PM to check the unit. He repaired it the following morning. So I have nothing but praise for Mills Heating & Air!! Thank you MILLS.”

—Denny S. | Emerald Coast Homeowner

Why Choose Us

Serving Florida's Emerald Coast Since 1984

Our mission at Mills Heating & Air is to give our customers the value they deserve and the highest quality repairs and replacements. We've been part of the Emerald Coast community for 40 years and resolve over 10,000+ service calls every year. If you require HVAC service and want it done right the first time, give us a call today!

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Sandy Beach Landscape

Service Area

Proudly Serving Fort Walton Beach, Destin, Panama City Beach, and the Surrounding Area

We have offices in Fort Walton Beach and Panama City Beach, Florida and assist customers in Walton, Okaloosa, Bay, and Santa Rosa Counties as well as the entire Emerald Coast region.

Some of the cities we visit regularly include:

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