AC Repair & HVAC Service in Jacksonville, FL
Comfort Zone of North Florida provides AC repair, heating service, installation, maintenance, heat pump service, ductless mini-splits, duct cleaning, and indoor air quality service for homes across Jacksonville, FL. Our Jacksonville shop is at 14476 Duval Pl W on the Northside, near River City Marketplace and Jacksonville International Airport. That Northside base is home ground for our Jacksonville work, and our service reaches from Oceanway and River City to Riverside, Mandarin, the Beaches, and the rest of Duval County.
Jacksonville is not one kind of house or one kind of system. A home near the airport may have a newer heat pump and builder-installed ductwork. A Riverside home may have older ducts, rooms that cool unevenly, and equipment that has fought river humidity for years. A home at the Beaches deals with salt air on the outdoor unit. The city changes from neighborhood to neighborhood, but the work stays the same: find the issue, show you what we found, give you the price in writing, and let you approve the work before it starts.
Comfort Zone has served North Florida since 2009. We are open 24 hours a day, seven days a week. Call (904) 406-0070 when you need HVAC service in Jacksonville.
AC Repair in Jacksonville, FL
When the air stops cooling in a Jacksonville summer, the house does not stay comfortable for long. The system may run all afternoon while the indoor temperature keeps climbing. Humidity builds, bedrooms stay warm, and a small issue can turn into a full shutdown if it is left alone.
Call for AC repair when you notice any of these signs:
- ✓ Warm air coming from the vents
- ✓ Weak airflow or rooms that will not cool evenly
- ✓ A system that runs almost nonstop
- ✓ Ice on the refrigerant lines or outdoor unit
- ✓ Water around the air handler or a backed-up drain line
- ✓ A breaker that trips when the system starts
- ✓ Grinding, rattling, buzzing, or other new noises
- ✓ A thermostat that cannot hold the temperature you set
- ✓ Indoor air that feels damp even while the system is running
Learn more
Our technicians service central air conditioners, heat pumps, and ductless systems of all makes and models. We check the system, find the cause, and explain the repair in plain language. You see the findings, with photos, and you get the repair price before work begins. If the repair is not the right move, we will say so and lay out the replacement option beside it. Nobody here works on commission, so the recommendation is based on the condition of your system.
Salt air deserves special attention at the Beaches and in other parts of Jacksonville close to the river and coast. It can eat away at outdoor coils and cabinets over time. Long cooling seasons add hours to the equipment, and high humidity makes weak airflow and drainage issues show up fast. A proper diagnosis matters because the same symptom can come from very different causes.
$99 Diagnostic Callout
Not sure what is wrong? Our diagnostic is $99. A technician goes over the whole system, finds the problem, and shows you the findings with photos, along with the repair price in writing, before any work begins. Nothing gets done until you say yes to the price.
Why Jacksonville systems wear out faster
Duval County air is hard on equipment. Long, humid summers keep systems running for months without a real break. Drain lines clog with algae growth in that humidity, which is why a Jacksonville system that cools fine in May can flood or shut down in August. When we repair a system here, we look at the whole picture: coil condition, drainage, airflow, and electrical wear, not just the part that failed today.
Heating Repair in Jacksonville, FL
Learn more
Heat pumps, furnaces, and heat strips in Jacksonville homes
AC Installation & Replacement in Jacksonville, FL
A replacement system has to fit the house, not just the space where the old unit sat. Square footage matters, but so do insulation, window exposure, duct condition, ceiling height, and the way your family uses each room.
Here is the rule of thumb we use.
Multiply the age of your system by the price of the repair it needs. If the total passes roughly $5,000, replacement usually deserves a serious look.
Learn more
If it stays under that mark, repair is often the better use of your money, especially when the system has been reliable. It is not a hard line. The technician can look at the system's condition, its repair history, and what a new system would change, then put both paths in writing.
For installation and replacement service, start with our installation and replacement page or call (904) 406-0070.
In Jacksonville, full system replacements run $5,600 to $9,562 for low to mid tier systems, and high-efficiency variable-speed systems start at $9,500. Your exact price comes from a free in-home estimate, in writing, with your options laid out side by side.
Replacing a system in an older Jacksonville home
HVAC Maintenance in Jacksonville, FL
Jacksonville systems run hard from May through September, and a maintenance agreement spreads the care out before the heat arrives instead of all at once when something fails. Regular maintenance gives a technician time to inspect the system while it is still working.
Learn more
See our maintenance page for the plan options and full details.
Heat Pump Service in Jacksonville, FL
Heat pumps make sense in Jacksonville because one system handles cooling through the long summer and heating through the short winter. That also means the equipment works almost all year.
Learn more
If your heat pump needs service, we will find the cause and explain the next step in writing. If replacement is the better path, we will show you why and price the new system before you decide.
Ductless Mini-Split Service in Jacksonville, FL
A ductless mini-split gives you heating and cooling without tying the room into a full duct system. Mini-splits are a strong fit for additions, garage conversions, workshops, sunrooms, and older Jacksonville homes where adding ductwork would mean tearing into finished rooms.
Learn more
For Jacksonville homes, a ductless mini-split installation starts at $4,865 for a single zone, and any additional zones are priced for your home in writing before work starts.
Duct Cleaning in Jacksonville, FL
Dust and debris build up inside ductwork over time. Renovations add to it. Older homes can carry years of buildup, and Jacksonville humidity makes a dirty system work in air that already feels heavy.
Learn more
Duct cleaning is not a cure for damaged or leaking ducts. If the technician sees crushed runs, loose connections, or sections that are pulling in attic air, we will show you what he found and talk through the repair or replacement path separately.
Indoor Air Quality in Jacksonville, FL
Jacksonville air can feel heavy even inside the house. Long cooling seasons keep windows closed for months.
Learn more
Humidity, drains, and the air inside a Jacksonville home
Jacksonville Neighborhoods and Nearby Areas We Serve
Our shop is on Jacksonville's Northside, so River City and the airport corridor are right in our backyard. We serve homeowners near Jacksonville International Airport, in Oceanway, and throughout the neighborhoods around River City Marketplace.
Learn more
From that base, our Jacksonville service covers the city and the rest of Duval County.
Northside, River City, and the Airport Corridor
This is home ground for the Jacksonville shop. River City includes established neighborhoods and fast-growing subdivisions near the airport and the I-95 corridor. Homes here range from newer construction to houses that have already been through one or two system changes. We also serve nearby Ft. Caroline and Fairfield, where river air, mature trees, and a mix of older and updated homes create their own heating and cooling demands.
From our Northside shop
Our shop is at 14476 Duval Pl W on the Northside, near River City Marketplace and the airport, and Jacksonville is our home turf in Duval County. From here we cover the Northside, Oceanway, downtown, and the rest of the city around the clock. A lot of Northside homes are single story ranches with one hard working system and older duct runs in a hot attic, and we plan repairs and replacements around that reality, not a template.
Riverside, the Westside, and the Southside
Riverside has some of Jacksonville's oldest housing stock, with historic homes, additions, converted spaces, and duct systems that may have been changed several times over the years. Farther south and west, Baldwin gives homeowners a quieter, more rural setting while still being part of the Jacksonville market we serve. Bartram Park brings newer homes and planned communities where the original systems are now reaching the age when maintenance and repair decisions matter more.
Zoned homes and hot upstairs rooms
Two story Jacksonville homes often cool one floor better than the other, and the fix is not always a bigger system. Zone dampers, a failing zone board, or a thermostat sitting in a hot hallway can all leave the upstairs warm while the downstairs freezes. We install and repair smart thermostats and service zoned systems, checking which thermostat controls which part of the house and documenting it before we leave, so comfort evens out and the settings make sense to the next person who touches them.
Mandarin and the Southside
Mandarin is known for its oak canopy, riverfront streets, and a mix of older homes, renovated houses, and established subdivisions. Shade can help the house, but it does not stop humidity. Mandarin systems still run long cooling seasons, and older ductwork can leave rooms uneven even when the outdoor unit sounds fine.
Atlantic Beach, Neptune Beach, and Jacksonville Beach
At the coast, salt air is part of every HVAC decision. Atlantic Beach, Neptune Beach, and Jacksonville Beach put outdoor units in air that can corrode metal faster than the same equipment would age inland. Maintenance matters, cabinet and coil condition matters, and replacement planning should account for the coastal environment from the start.
Still researching before you call? Our Jacksonville air conditioning guide walks through system types, sizing, and year-round care for Duval homes.
What Your Neighbors Say
The Comfort Zone Promise
The price we quote is the price you pay.
If your system needs anything beyond the original job, you see the price and approve it before we touch it. No surprises on the invoice.
Findings in writing, with photos.
Every visit is documented. You get the findings in writing with photos of what we found and what we did, so nothing gets lost between visits or between techs.
Hourly techs, never commission.
Our technicians are paid by the hour, with no sales quotas and no commission. If it can be repaired, we repair it. Nobody here gets paid more for selling you a new system.
Jacksonville HVAC FAQs
Do you offer HVAC repair in Jacksonville, FL?
Yes. Comfort Zone provides HVAC repair throughout Jacksonville, FL, from our shop on the Northside. We repair central air conditioners, heat pumps, furnaces, electric heating systems, and ductless mini-splits. Call (904) 406-0070 any time. We are open 24 hours a day, seven days a week.
Do you handle AC installation in Jacksonville, FL, including the Northside?
Yes. We install and replace AC systems across Jacksonville, including North Jacksonville, River City, Oceanway, and the airport corridor. We look at the size and layout of the home, the condition of the ductwork, and how the rooms are used before recommending a system. As a Carrier Factory Authorized Dealer, we install Carrier equipment and service all makes and models.
How does the $99 diagnostic work?
The diagnostic is $99. A technician inspects the system, finds the issue, and shows you what he found with photos. Then you get the repair price up front and decide whether to approve the work. No repair begins until you approve the price.
Do you provide residential HVAC maintenance in Jacksonville?
Yes. We provide residential HVAC maintenance in Jacksonville, including preventive maintenance for central air conditioners, heat pumps, and ductless systems. Jacksonville systems run hard from May through September, so regular service helps catch drain, airflow, electrical, and performance issues before the worst heat arrives. Visit our maintenance page for the plan options and full details.
Do you repair and install ductless mini-splits in Jacksonville?
Yes. Comfort Zone installs, repairs, and maintains ductless mini-splits in Jacksonville. They are a practical option for additions, garage conversions, sunrooms, workshops, and rooms that stay warmer or cooler than the rest of the house. We can look at the space and give you the installation price in writing before work begins.
How much does AC repair cost in Jacksonville, FL?
In Jacksonville, minor AC repairs run $150 to $400. After the $99 diagnostic, you get the findings with photos and the exact repair price in writing before any work starts. The $99 diagnostic is not waived with a repair.
Schedule HVAC Service in Jacksonville, FL
If your AC is out, your heat is not keeping up, your house will not dry out, or you are deciding between a repair and a new system, call Comfort Zone of North Florida at (904) 406-0070 or . Our Jacksonville shop is on the Northside near River City Marketplace and Jacksonville International Airport, and we serve homes throughout Jacksonville and Duval County.
You will get a technician who finds the issue, shows you the evidence, and gives you the price before work starts. That is how we have served North Florida since 2009, and it is how we will handle your home too.
Call (904) 406-0070 or for HVAC service in Jacksonville, FL.
Comfort Zone of North Florida: Jacksonville
14476 Duval Pl W #801, Jacksonville, FL 32218
Phone: (904) 406-0070
Hours: Open 24 Hours
After-hours AC emergency? Our AI booking assistant schedules Jacksonville AC repair 24/7, book online anytime.