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AC Replacement

For immediate service or repairs, call 386-222-1342.

AC Replacement in Keystone Heights, FL 


Southern Air Heating & Cooling is your top choice for AC Replacement in Keystone Heights, FL. Our expert team of trusted technicians provides Clay County and Northeast Florida residents and businesses with reliable, energy-efficient air conditioning solutions.

We specialize in AC replacement and new installation services designed to fit each customer’s needs and budget specifications. 

Whether you are upgrading an outdated or worn-out unit or installing a system in a newly constructed building, we’ll provide air conditioning that will ensure optimal cooling performance and energy efficiency.

Signs You Could Need To Replace Your Air Conditioning System

These are some typical indications it might be time to consider AC replacement in Keystone Heights, FL.

Age of Your Existing System

If your current HVAC system is over 15 years old, it could be a good time to consider a system upgrade. As older cooling systems develop normal wear and tear, they become less efficient, meaning they use more energy to produce adequate cooling. The extra stress accelerates aging, increasing the risk of breakdowns and expensive repairs. 

Poor Cooling Performance and Airflow

When an air conditioner begins to fail, one of the first telltale signs is impaired cooling power and inconsistent airflow. As components like coils and air handlers wear out, they struggle to remove heat and humidity from indoor air and to circulate air evenly to every room.

Higher Utility Bills

Sudden and unexpected increases in energy consumption during hot weather often indicate that an air conditioner is working overtime to keep up. As a unit works longer with less efficiency, its energy consumption multiplies. 

Poor Air Quality and Excess Humidity

Air conditioners should efficiently remove excess moisture from indoor air and filter out pollutants. If your indoor space feels muggy and stale even when your air conditioner is running, it is likely failing in an essential function.

Benefits of AC Replacement in Keystone Heights, FL

Installing a modern HVAC system provides several substantial benefits and returns on investment.

Energy Efficient Systems

Modern cooling systems use the latest technologies and energy-efficient designs. With higher SEER ratings, you can expect superior cooling performance while consuming less energy. 

Increased Cooling Performance

Modern coil designs and chemical refrigerants are superior to those available just a few years ago. A new HVAC system can provide the power needed to handle the hottest days the Florida climate can throw at you. 

Reliability and Reduced Maintenance

Installing a new cooling system eases concerns about the likelihood of breakdowns and emergency repair expenses. A new unit comes with a greater expected lifespan than previously developed models and new manufacturers’ warranties. 

With our simple annual maintenance that includes inspections, calibration, and cleaning, you can expect many years of reliable AC service with a new installation.

Southern Air Heating & Cooling’s AC Installation Process

When you schedule AC replacement in Keystone Heights, FL, we begin by discussing your cooling needs and current system. Our experts will evaluate the design and structure of your home or business to help you select a correctly sized unit that will deliver maximum cooling power most efficiently. We’ll help you pick the installation that best matches your needs and budget.

We handle the entire installation process with precision and care to protect your property. Before we finish, we will test everything completely and ensure you are comfortable operating your new system.

Keystone Heights Counts on Southern Air Heating & Cooling

Keystone Heights is a small city with an interesting history and a reputation for its scenic natural beauty. Established as a planned community in 1924, the town takes its name from Pennyslvania’s nickname as the Keystone State. 

The community has maintained its small-town charm, with about 1,500 residents. It was established as a wintertime resort destination and enjoys the subtropical hot and humid Florida summertime climate. 

Keystone Heights centers around outdoor recreation. Lake Geneva provides 1,600 acres of prime Sunshine State fishing, boating, and swimming. Nearby Gold Head Branch State Park attracts visitors for hiking, camping, and wildlife viewing. 

Families enjoy Keystone Beach Park and the Geneva Jungle playground near the historic Keystone Pavillion.  

Call Southern Air Heating & Cooling for AC Replacement in Keystone Heights, FL

For over four decades, our family business, headquartered in Palatka, has been a trusted name in the local community, serving our neighbors in Keystone Heights and Northeast Florida. We take pride in the long-lasting professional service relationships we’ve built with our customers. Your complete satisfaction is our daily mission.

Schedule service with us online or call Southern Air Heating & Cooling anytime at (386) 222-1342 for full-service AC replacement in Keystone Heights, FL.


What Your Neighbors Are Saying!

Excellent
Southern Air4.9
Based on 1864 reviews
Ada M.
22 hours ago
Southern Air and their technician, Jamar, were absolutely amazing! I could not be happier with the entire experience—from my very first phone call and inquiry to the incredibly efficient, kind, and courteous technician who came out to help. Jamar was professional, knowledgeable, respectful, and genuinely cared about getting the job done right. It’s refreshing to find a company that provides quality, dependable, honest, and affordable service. I would highly recommend Southern Air to anyone needing work done on their air-conditioning system. They truly exceeded my expectations, and I am so happy I called them! Thank you, Southern Air and Jamar, for such an outstanding experience! ⭐️⭐️⭐️⭐️⭐️
Response from the owner:Thank you, Ada, for taking the time to share your feedback. We’re glad your call was handled smoothly and that Jamar delivered professional, knowledgeable service while getting everything done efficiently and correctly. We pride ourselves on fast response, so please call us anytime for seasonal tune-ups or to set up ongoing service.
Nanci S.
4 days ago
Called on a Saturday morning, our ac had stopped working Friday evening. The office was friendly and helpful and scheduled Albert right away. He came in less than 2 hours and although the blower motor has to be replaced he had our air back running in a short time. Very knowledgeable,professional and reasonable prices. Thank you
Response from the owner:Thank you, Nanci, for taking the time to share your feedback. We’re glad our friendly office team could schedule service quickly and that Albert got your AC running again fast while outlining the blower motor replacement, and we take pride in our fast response and professionalism. Please feel free to call us anytime for seasonal tune-ups or to set up ongoing maintenance service.
Chelsea M.
5 days ago
Southern Air is phenomenal! They installed a brand new AC unit and a new air handler for us- they were prompt, efficient, and thorough. The techs disposed of our old equipment, and left our home in pristine condition. When we had an issue related to a power outage once, and they sent a tech out to us within 30 minutes of our call. They offer 10 year warranty options and an annual program, where they will perform all maintenance, even filter changes. I could not be happier with their services, and I enjoy never having to think about the AC! They are the best in Putnam county. Updated to add: I continue to be impressed by Southern Air. Our air conditioner went out late in the evening. Someone from this company answered the phone at 9:00 pm and arranged service for us first thing in the morning. Trenton was friendly and knowledgeable. He arrived promptly as scheduled and diagnosed the issue. I appreciate that they texted a photo of the technician and his name, so I knew who to expect, for safety. Everything was covered under the maintenance plan and warranty, and they even loaned us a temporary air conditioning unit while we wait over the weekend for the parts and repair. I am very grateful. The people running this company are wonderful people that truly care.
Response from the owner:Thank you so much for taking the time to leave us a positive review - it’s greatly appreciated!
Chris H.
1 week ago
Our technician was Albert Vera and he was very knowledgeable and fixed our AC unit whereas other companies came out and could not fix it and just wanted to sell us a new unit. So I definitely would recommend this company. NOT A SCAM COMPANY AT ALL. TRULY ON HONEST COMPANY !!!!
Response from the owner:Thank you, Chris, for your feedback and for recommending Southern Air. We’re glad our team’s professionalism and fast response helped get your AC repaired when others pushed replacement instead. Please call us anytime to schedule a seasonal tune-up or set up ongoing service to keep things running smoothly.
Al B.
1 week ago
I am considering switching suppliers of HVAC service to three residences.I scheduled this service to get acquainted with Southern Air. Trenton delivered for us and for southern Air. We hope to see more of Trenton and southern air as we have needs in the future.
Response from the owner:Thank you, Al, for your feedback and for giving Southern Air the opportunity to earn your trust across your residences. We’re glad Trenton made a strong first impression, and we pride ourselves on our professionalism and fast response. If you’d like, please call us anytime to schedule seasonal tune-ups or set up ongoing service for all three homes.

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Financing Options

Comfort today, pay over time.


At Southern Air, we believe in providing accommodation for our valued customers. It’s tough predict when your air conditioner is going to need replacement. For that reason, it can be challenging to budget for a new system. 

With our flexible financing options, you can get the comfort you deserve without breaking the bank. Contact us today to learn more about our lending options, or get pre-approved online today. 

Customer Reviews

See What Your Neighbors Are Saying About Southern Air!


Our team is known for: professional service, accurate repairs, and fast response.

  • We got great air conditioning service from Southern Air this week. They even came out Sunday and didn’t charge extra. They got our units replaced in one day, and they were very respectful of our home and belongings.

    -Rhonda C.
  • Jamar was very prompt, professional and over all great Tech. He kept us informed on things he was doing etc. Southern Air rocks, plain and simple. Having a Tech that was great and efficient, was awesome.

    -Lindie K.
  • Our technician came out today to service our AC. He was very courteous and explained things to me. Professional demeanor and appearance. I received a text and a call prior to his arrival.

    -Rita C.
  • Justin came out on a Sunday and was very thorough and knew exactly what the issues were. He is a top notch HVAC technician. Myself and my family are grateful.

    -Shawn R.
  • Justin did a great job. Very polite, thorough and professional. You’re fortunate to have an employee like him representing your company in this day with help shortages. Plus the service was very reasonably priced.

    -William M.
  • Jeremy came to my house right on time in the morning, diagnosed my problem, went to the shop and made a game plan with some of his crew, and was back at my house within the hour to complete the job by days end.

    -Elliott O.
    Ada M.
    22 hours ago
    Southern Air and their technician, Jamar, were absolutely amazing! I could not be happier with the entire experience—from my very first phone call and inquiry to the incredibly efficient, kind, and courteous technician who came out to help. Jamar was professional, knowledgeable, respectful, and genuinely cared about getting the job done right. It’s refreshing to find a company that provides quality, dependable, honest, and affordable service. I would highly recommend Southern Air to anyone needing work done on their air-conditioning system. They truly exceeded my expectations, and I am so happy I called them! Thank you, Southern Air and Jamar, for such an outstanding experience! ⭐️⭐️⭐️⭐️⭐️
    Response from the owner:Thank you, Ada, for taking the time to share your feedback. We’re glad your call was handled smoothly and that Jamar delivered professional, knowledgeable service while getting everything done efficiently and correctly. We pride ourselves on fast response, so please call us anytime for seasonal tune-ups or to set up ongoing service.
    Dwight
    22 hours ago
    He was great I would highly recommend him to my family and friends
    Response from the owner:Thank you, Dwight, for taking the time to share your feedback and for recommending Southern Air to your family and friends. We’re glad you had a great experience, and our professionalism is something we work hard to deliver on every visit. Please call us anytime to schedule a seasonal tune-up or set up ongoing service.
    Marie R.
    1 day ago
    Our technician Jason informed us he was on his way so we were ready for him. He performed our maintenance and also recommended a product that would help our air conditioner not work is hard.
    Response from the owner:Friendly service and peace of mind is what we aim for. Thank you for your thoughtful words and for recommending us!
    Doreen J.
    1 day ago
    As usual he does a great job. He explains everything about what he is doing. Always very polite and very helpful. Would highly recommend him and your company.
    Response from the owner:Hi Doreen! We appreciate the review and are glad to be of service!
    Linda L.
    1 day ago
    Very polite gentleman and very thorough. Explained everything. Great business. Did regular maintenance I can always count on southern air. Justin was the technician. 8/25/26
    Response from the owner:We’re thrilled Randy could take such good care of you! It’s great to know you can always rely on Southern Air for your maintenance needs.
    Irving S.
    2 days ago
    They got the necessary motor faster than expected. Communication was fantastic. I really like getting a text with the technician's name and picture. The repair was fast and on time.
    Response from the owner:Thank you, Irving, for taking the time to share your feedback. We’re glad you appreciated our fast response and the technician photo text, and that the repair was handled efficiently with clear explanations along the way. Please feel free to call us anytime for seasonal tune-ups or to set up ongoing HVAC service.
    Sheri S.
    2 days ago
    I have used Southern Air for over 20 years and have always received excellent service. A true honest company that cares about their customers. Justin Coates is our service Tech and he is the best!
    Response from the owner:Thank you, Sheri, for your kind feedback and for trusting Southern Air over the years. We’re grateful you’ve consistently experienced honest, customer focused care, and we take pride in our professionalism and the service our technicians provide. If you ever need a seasonal tune-up or would like to set up ongoing service, please call us anytime.
    Summer L.
    3 days ago
    Fantastic as always! In and done within an hour.
    Response from the owner:We’re so glad to hear it! Thank you for being part of our customer family!
    Nanci S.
    4 days ago
    Called on a Saturday morning, our ac had stopped working Friday evening. The office was friendly and helpful and scheduled Albert right away. He came in less than 2 hours and although the blower motor has to be replaced he had our air back running in a short time. Very knowledgeable,professional and reasonable prices. Thank you
    Response from the owner:Thank you, Nanci, for taking the time to share your feedback. We’re glad our friendly office team could schedule service quickly and that Albert got your AC running again fast while outlining the blower motor replacement, and we take pride in our fast response and professionalism. Please feel free to call us anytime for seasonal tune-ups or to set up ongoing maintenance service.
    Robert H.
    4 days ago
    Did a fine job and very knowledgeable and very pleasant to talk with
    Response from the owner:Thank you, Robert, for taking the time to share your feedback. We’re glad you found our team knowledgeable and easy to speak with, and we aim to deliver the same professionalism on every visit. If you’d like to schedule seasonal tune-ups or set up ongoing service, please call us anytime.
    Gordon S.
    4 days ago
    Justin came in and was very respectful of my automobiles because he had to move them and he went up into the attic when it was boiling hot and found my problem. Very satisfied with Justin and the team
    Response from the owner:Gordon we are glad to hear of your great experience Southern Air and your technician Lavarus. Thank you for choosing Southern Air and great job Lavarus!
    Willie M.
    5 days ago
    Very good service one happy customer 👍
    Response from the owner:Hi Willie, thank you for the kind words! It’s wonderful to hear you're a happy customer. We appreciate your feedback!
    Brenda H.
    5 days ago
    Made sure I understood what services were needed. Was kind and professional. Thanks Justin
    Response from the owner:Thanks for the positive review, Brenda!
    Chelsea M.
    5 days ago
    Southern Air is phenomenal! They installed a brand new AC unit and a new air handler for us- they were prompt, efficient, and thorough. The techs disposed of our old equipment, and left our home in pristine condition. When we had an issue related to a power outage once, and they sent a tech out to us within 30 minutes of our call. They offer 10 year warranty options and an annual program, where they will perform all maintenance, even filter changes. I could not be happier with their services, and I enjoy never having to think about the AC! They are the best in Putnam county. Updated to add: I continue to be impressed by Southern Air. Our air conditioner went out late in the evening. Someone from this company answered the phone at 9:00 pm and arranged service for us first thing in the morning. Trenton was friendly and knowledgeable. He arrived promptly as scheduled and diagnosed the issue. I appreciate that they texted a photo of the technician and his name, so I knew who to expect, for safety. Everything was covered under the maintenance plan and warranty, and they even loaned us a temporary air conditioning unit while we wait over the weekend for the parts and repair. I am very grateful. The people running this company are wonderful people that truly care.
    Response from the owner:Thank you so much for taking the time to leave us a positive review - it’s greatly appreciated!
    Barbara T.
    5 days ago
    This is the first time I’ve had Southern Air out to my house and I must say that I have been very happy with the results. They seem to be fair and honest I joined their club and I’m very happy with the results. I would definitely recommend them.
    Response from the owner:Thank you for the kind feedback, Barbara. We’re glad your first visit with Southern Air left you feeling confident in our honest, fair approach, and we take pride in our professionalism. Please feel free to call us anytime to schedule seasonal tune-ups or set up ongoing service.
    Larry J.
    6 days ago
    The Service is always spot on technician Are very professional highly recommend
    Response from the owner:Thank You Larry for choosing Southern Air and the 5 Star review!
    Dawn
    6 days ago
    Excellent, He does a wonderful job with great work ethics and very professional. I can't say enough, this is the 3rd time he came and I don't want anyone but him🌸
    Response from the owner:Thank you, Dawn, for your kind words! We're delighted to hear that you're pleased with the professionalism and work ethic of our technician. We appreciate your loyalty and look forward to assisting you again in the future.
    Matthew H.
    6 days ago
    Showed up on time. An appointment is very important to me. I like a schedule. Do what you say you are going to do and you can beat out 80% of the other companies.
    Response from the owner:Thank you, Matthew, for your feedback and for highlighting how much punctuality and keeping commitments matter to you. We take professionalism seriously and work hard to arrive when we say we will and respect your schedule. Please feel free to call us anytime for seasonal tune-ups or to set up ongoing HVAC service.
    Barbara
    6 days ago
    Very good, honest company to use.
    Response from the owner:Thank you! We appreciate your kind words and are glad you had a positive experience with our team.
    Larry D.
    6 days ago
    SUPER! Make sure you ALWAYS send HIM!
    Response from the owner:Thank you so much for your wonderful review! We're delighted to hear that you had a fantastic experience, and we look forward to providing you with great service again.
    Susan B.
    6 days ago
    Justin seems to be a very knowledgeable technician with air conditioning units. He is very professional.
    Response from the owner:We appreciate your feedback. Thank you for the review!
    Mike L.
    6 days ago
    Excellent service every time.
    Response from the owner:Thank you! We’re so glad to hear that — it means a lot to know we’re delivering excellent service every time!
    Chris H.
    1 week ago
    Our technician was Albert Vera and he was very knowledgeable and fixed our AC unit whereas other companies came out and could not fix it and just wanted to sell us a new unit. So I definitely would recommend this company. NOT A SCAM COMPANY AT ALL. TRULY ON HONEST COMPANY !!!!
    Response from the owner:Thank you, Chris, for your feedback and for recommending Southern Air. We’re glad our team’s professionalism and fast response helped get your AC repaired when others pushed replacement instead. Please call us anytime to schedule a seasonal tune-up or set up ongoing service to keep things running smoothly.
    Al B.
    1 week ago
    I am considering switching suppliers of HVAC service to three residences.I scheduled this service to get acquainted with Southern Air. Trenton delivered for us and for southern Air. We hope to see more of Trenton and southern air as we have needs in the future.
    Response from the owner:Thank you, Al, for your feedback and for giving Southern Air the opportunity to earn your trust across your residences. We’re glad Trenton made a strong first impression, and we pride ourselves on our professionalism and fast response. If you’d like, please call us anytime to schedule seasonal tune-ups or set up ongoing service for all three homes.
    cathy D.
    1 week ago
    He was courteous and friendly. And prompt!!! He had our air conditioner up and running again. Thank you so much Justin. 😊
    Response from the owner:Hi Cathy! Thank you so much for taking the time to leave us a positive rating!

    Schedule Service

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    You are agreeing to receive SMS customer care and marketing notifications from Southern Air Cooling and Heating. Message frequency may vary. Standard Message and Data Rates may apply. Reply STOP to opt out. Reply Help for help. Visit our Privacy Policy Page For more information