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Proudly serving Diamondhead, Kiln, Bay St. Louis, Waveland, Pass Christian, Gulfport, & Surrounding Areas

Dedicated to Keeping You Comfortable 24/7 and All Year-Round

Top Notch AC & Heat logo representing the best air conditioning repair and heating services in Diamondhead, MS.

Who We Are

Top Notch AC & Heat LLC is a small business that is family owned and operated out of Diamondhead, MS.  We are fully licensed, bonded, and insured, providing our customers with reliable, professional, and trustworthy HVAC services every time. Our company is dedicated to providing quality heating, ventilation, and air conditioning services to the Mississippi Gulf Coast and surrounding areas. We are passionate about providing "top-notch" HVAC services with affordable pricing. With a focus on customer satisfaction and technical expertise, we ensure your indoor comfort all year round. Our skilled technicians are committed to delivering energy efficient solutions tailored to your needs, whether it's installation, repairs, or seasonal maintenance. 
Picture of Top Notch AC & Heat owner, Chris Sisco.
​"I'm Chris, the proud owner of Top Notch AC & Heat LLC. We pride ourselves on our professionalism, reliability, and attention to detail. Our goal is to exceed your expectations by offering reliable and affordable air conditioning and heating services that enhance the efficiency and longevity of your HVAC systems. At Top Notch AC & Heat, we believe in transparency, integrity, superior workmanship, and treating our customers like family."

Top Notch Services

We specialize in HVAC installation, repair, maintenance, air quality, and energy efficiency services tailored to meet the needs of your home.

Fixing an Air Conditioner
Installation Services
Central Air Conditioning Installation
Heat-Pump Installation
Gas Furnace Installation
Ductless Mini-Split Installation
Repairing Air Conditioner
AC and Heat Repair Services
Emergency 24/7 Service
Air Conditioning Repair
Heating System Repair
Ductless Mini-Split Repair
Thermostat Replacement
Comfortable home with air
Maintenance Services
Seasonal Maintenance
AC Tune-Up
Heating System Maintenance
Filter Replacement

Explore some of our recent HVAC projects to see how our company has transformed indoor environments and provided exceptional and top-notch comfort to our clients.

New construction AC ductwork
New construction AC ductwork
New Condenser Install
New construction ductwork
New construction AC ductwork-customer request
Air handler on a new construction installation
New construction AC ductwork
New AC Condenser Installed
Air handler installation

Our Projects

Call/Text Today For A Free Quote

Top-Notch Tips

Helpful Tips for Maintaining Your HVAC System

  • Keep Outdoor Unit Clean and Clear

  • Monthly System Maintenance

  • Schedule Bi-Annual Maintenance

Remove any debris, leaves, or plants that may obstruct the outdoor unit of your HVAC system. Clearing the area around the unit promotes proper airflow and prevents damage. 

Air filters should be replaced at least once a month. Dirty air filters can restrict airflow and reduce the efficiency of your HVAC system. Adding 8oz vinegar mixed with 8oz water to the main condensate drain monthly can prevent sludge formation and clogged pipes. These simple things can ensure your system continues to operate efficiently.

Regular maintenance by a professional HVAC technician can prevent any potential problems before they become major issues. 

TESTIMONIALS

"When my home a/c unit needed a service I approached a couple of companies and Top Notch AC & Heat responded promptly and personally. Chris laid out the costs and arrived on time. He was very knowledgeable and explained everything clearly. I will be using them again and highly recommend them. Top Notch AC & Heat is the best HVAC company on the Mississippi Coast!"

Ryan S.

"I had an outstanding experience with Chris at Top Notch AC & Heat. From start to finish, he was professional, knowledgeable, and incredibly efficient. Chris took the time to explain the issues with my system and offered practical solutions that fit my budget. The work was done promptly and my AC is running better than ever." 

Shane C.

"I highly recommend this company, the service was excellent, very caring and professional and his prices are reasonable. Most of all he's honest! If you need AC work done he's your man!!! I found my forever AC guy. Thanks again Mr Chris Sisco."

Jeanne A.

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