Upfront pricing from a crew used to houses running two and three systems at once. The local AC company for Ponte Vedra Beach, Sawgrass and Marsh Landing: air conditioning repair and installation, zoning, mini splits and furnace repair, all from one crew.
Tell us what’s going on — we’ll get back to you in a flash.
The Great Dane difference
The Ponte Vedra AC Company for Every System in the House
Great Dane Heating & Air has kept Jacksonville and Duval County comfortable for more than 20 years, on houses of every size and on every system inside them. A family company with upfront pricing, comfort techs who treat your home like their own, and a soft spot for shelter dogs.
Ponte Vedra is a standing run for us, and the pattern repeats — several systems of different ages under one roof, zoning that was set once and never revisited, and one unit quietly carrying the others.
Licensed & Insured
Florida state certified contractor CAC036942, fully insured, and accredited with the Better Business Bureau at an A+ rating. Every tech who pulls into your driveway works under that license.
20+ Years in Service
Two decades across Duval County and down the coast, on houses of every size. The people who answer your call are the same people who show up at your door.
Every Job Gives Back
We’re a proud supporter of the Jacksonville Humane Society. Part of what you spend keeping your home comfortable helps shelter dogs here in Jacksonville find one of their own.
No cost, no pressure
Get a Free Estimate on Your System
Tell us what it’s doing. We find the real problem, give you the whole number before any work starts, and tell you straight if a repair is not worth your money.
When your air conditioner is past its prime, more AC repair isn’t always the answer. A new, energy-efficient AC installation can end the breakdown cycle, cool your home evenly, and take a real bite out of summer power bills.
Our Jacksonville team gives you the honest math on AC replacement vs. repair, sizes the new system correctly for Florida heat, and leaves the job site cleaner than we found it — just like this install.
Out here the question is rarely whether a system works. It is whether the two or three of them under one roof were ever set up to share the house properly. Four things that decides.
78°Set to 78° — nine months a year
The scaleMore than one system
Past a certain size no single system covers a house well, so these houses run two or three. Each is sized for its share, and where those shares were drawn by floor area rather than by the load each side actually carries, one unit spends its life doing the other one’s work.
The zonesSet once, never revisited
Zoning is the cheapest comfort in a large house when it is right and the most confusing fault in one when it is not. Dampers drift, and a zone board that no longer matches what the thermostats believe will produce a house that is half perfect and half unliveable.
The empty monthsA house nobody is in
A house left standing still needs its humidity controlled, and a system set high to save money barely runs — which is exactly when it stops drying the air. What that setting should be is a real question here and it has a real answer.
The exposureNot every unit has it equally
On the beach side, whichever units face the wind take the salt and the ones sheltered behind the house do not. In a multi‑system property that means your equipment is not ageing at the same rate, and treating it as though it is will surprise you.
Ponte Vedra Service Area
From A1A to Marsh Landing
Bigger houses, more systems per house, and a fair number of them empty for part of the year. This is where the truck actually ends up.
Old Ponte Vedra
The oceanfront streets. The most exposed equipment we look after and the shortest service intervals to go with it.
Sawgrass
Behind the gates, where two and three systems to a house is the norm rather than the exception.
Marsh Landing
Large homes on the marsh side, generally zoned, and generally worth checking the dampers before the equipment.
A1A Corridor
The spine of the whole area. Nearly everything we run out here turns off it at some point.
Palm Valley
West toward the Intracoastal. Further from the salt and easier on an outdoor unit than the beach side.
Ponte Vedra Commercial
Clubs, offices and restaurants along the corridor — work we cover on the commercial side.
$99Refresh & Tune‑Up
Limited‑time offer
$99HVAC Refresh & Tune‑Up
A full seasonal check‑over of the system you already have — so small problems stay small.
Straight talk: If somebody tells you your system is “illegal now” because of the refrigerant rules — it isn’t. R‑410A systems can still be serviced. New equipment moved to R‑454B in 2025 and R‑410A production is stepping down, so topping off an older system gets pricier every year. That’s a reason to plan, not a reason to panic‑buy tonight.
Paw Partner
Community
Why the Logo Has Four Legs
Nobody names a heating and air company after a Great Dane unless they mean it. The business was started by people who are unreasonable about animals, and part of what it earns has always been pointed back at the pet population of Duval County.
That looks like rescue events, hours spent with the animals still waiting at the shelter, and a Rescue of the Week shared with everyone who follows us. It is also why we are a Paw Partner Corporate Sponsor of the Jacksonville Humane Society.
A working air conditioner is comfort. In a house running more than one of them, comfort is really a question of whether they were ever set up to share the work properly.
Vetted people in your home
Florida state certified — licence CAC036942 — fully insured, and BBB accredited at an A+ rating. The same small crew every time, which matters when they are working through a house rather than standing at one unit.
The air in a house left standing
A house nobody is in still needs its humidity held down, and a system set high to save money barely runs. Filtration, purification and humidity control keep the air right whether or not anybody is there to notice.
The smaller recommendation
If two of your three systems are fine, we will tell you that, even though the larger number was there for the taking. Our work is guaranteed — that is the whole point of the name on the truck.
Free estimate, honest answer.Tell us what your system is doing and we’ll tell you what it actually needs.
Paul came out and replaced our blower motor and saved the day. He fielded my call on Sunday evening, then did the service Monday afternoon. Friendly, efficient, and professional.
After years of feeling vulnerable to dishonest HVAC companies, a neighbor put me in touch. He quickly earned my trust — quick to return calls, reasonable rates, and he’s never tried to sell me things I don’t need.
We’ve used him for everything from small tweaks to replacing our entire unit. Quick, reliable, honest, and clean — and he beat the prices of every competitor. Yes, we priced out seven.
Fast and efficient, unbelievably affordable pricing. He quickly figures out the problem and explains it in a way anyone can understand. You automatically feel like you can trust him.
Our A/C went down and the team showed up Monday morning first thing. We had cool air flowing in no time. The crew was fast, clean, and finished under time.
Mike and the team were very professional, friendly, and knowledgeable. The price was not unreasonable. So happy we found this company — we know we will be taken care of in the years to come.
Just had Great Dane install a new A/C in my home. Mike came to my home, saw what I had, and I told him what I wanted installed. There was absolutely no sales pressure.
Mike came out and gave an estimate with no fluff, which is what I like. He was honest and professional. The team that installed the unit worked well together and the work performed was stellar!
The questions Jacksonville asks us most — straight answers, no jargon.
One system works hard and the other barely runs.+
In a house with two or three systems that is usually a sizing or zoning question rather than a fault. Whichever unit covers the side taking the afternoon sun will always work harder, and if the split between them was drawn by floor area rather than by load, one of them was always going to carry the other. Measuring both says whether it is balance or breakdown.
Half the house is comfortable and half is not.+
If the house is zoned, start at the dampers rather than the equipment. Zoning that was set up once and never revisited drifts, and a damper no longer doing what the thermostat believes it is doing produces exactly that symptom. It is cheap to check and it is frequently the whole answer.
We came back after a month away to a musty house.+
That is the usual result of leaving a house too warm while nobody is in it. A system set high enough to save money runs very little, and running very little means taking very little water out of the air. The fix is a setting rather than equipment, and we will tell you what it actually needs to be.
The house has three systems of different ages. Replace them together?+
Rarely the right answer, and we will say so even though it is the bigger sale. Systems fitted at different times have different amounts of life left in them, and replacing a unit with five good years in it to tidy up a schedule is money spent early for no comfort gained. We will map what you have and what each is likely to need.
Is zoning worth adding to a house that has none?+
It depends entirely on the layout and on what the duct will allow. In a large single‑system house with a wing nobody uses half the day it can be transformative. In a house whose duct cannot deliver the airflow a closed damper demands, it creates new problems instead. We look at the duct before recommending it.
What should the system do while we are away for the season?+
Hold the humidity down rather than hold the house cold. Running warmer but dry protects the house, the contents and the finishes; running cold in short bursts does not. There is a sensible setting for it, and it is usually not the one people leave.
Does the ocean affect us this far back from it?+
Less than on the oceanfront streets, and not nothing. Salt carries inland on the wind and settles on the outdoor coil, so whichever units sit on the exposed side of the house age faster than the ones tucked behind it. Worth knowing which of yours is doing the harder job.
What is the $99 HVAC Refresh & Tune‑Up?+
A full seasonal check‑over of the system you already have — measurements taken, the parts that genuinely foul cleaned, and a straight answer about what needs attention and what does not. In a house with more than one system, it is also where you learn which of them is quietly carrying the rest. Cannot be combined with any other offer, one per household.
The house is large and the filters are everywhere. How often?+
More often than the box says, and the answer is different per system. Whichever unit does the most work loads its filter fastest, and that is reliably the one people forget, because it is usually the least accessible. We will tell you which is which and mark them if it helps.
Do you come out to Ponte Vedra?+
Regularly. Ponte Vedra Beach, Sawgrass, Marsh Landing and the streets along A1A are all inside the normal service area at the same pricing as anywhere else we go. Great Dane is licensed in Florida as CAC036942, which you are welcome to look up before you let anybody into the house.
Will you tell me if I do not need the work?+
Yes, and in houses this size it comes up more than you would think, because there is usually one system somebody has been told to worry about that is measuring perfectly well. You get the readings, and the decision stays yours.
Anything worth checking before I call?+
Three things, none of which cost anything. Check the breakers — with more than one system there is more than one to check. Look at the filters, because a collapsed one starves a system and imitates a far bigger fault. And note which thermostat is the one complaining; in a zoned house that narrows things down considerably before we arrive.
Everything we do, in your neighborhood.One crew for all of it — not a different company for each job.
AC Repair
Fast, honest fixes when the cool cuts out. We diagnose it right and quote it upfront — before the work starts.
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AC Replacement & Installation
Right-sized new systems with honest quotes. We help you pick what actually fits your home and budget.
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Emergency AC Repair
Broke down in the Florida heat? Call and we’ll tell you what it is likely to be, and whether it can safely wait until morning.
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Heating Repair
Warm and ready for the cold snaps. Furnaces, heat strips and everything in between.
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HVAC Maintenance
Seasonal tune-ups that prevent summer breakdowns and keep your energy bills in check.
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Heat Pump Services
Efficient heating and cooling in one system — perfect for Florida weather.
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Ductless Mini-Splits
Cool the rooms your ducts can’t reach — garages, additions, sunrooms and more.
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Air Duct Cleaning
Cleaner air and better airflow from every vent in the house.
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Indoor Air Quality
Purifiers, filtration and humidity control so your family breathes easier.
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Commercial HVAC
Installs, repairs and maintenance that keep Jacksonville businesses comfortable.
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Commercial AC Repair
When the cooling quits mid-shift, we find the real fault and give you the number before any work starts.
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Commercial AC System Replacement
Right-sized equipment for your space, quoted upfront so there are no surprises on the invoice.
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Commercial Preventative HVAC Maintenance
Scheduled tune-ups that catch small faults early — before they turn into a closed sign.
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Commercial Indoor Air Quality
Filtration and humidity control for offices, shops, salons and waiting rooms.
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Commercial Air Duct Cleaning
Cleaner air and better airflow through every vent in the building.
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Paw Partner
Meet the Jacksonville Humane Society →
Mini-split install, done right
Wiring up a new system
High-efficiency system on a fresh pad
Twin-system install
Bryant condenser on a fresh pad
Condenser replacement
New air handler, tucked in clean
Delivery day
The big teal truck
Our smallest biggest fan
Come say hi at the home show
Airflow Why Your AC Freezes Up in a Florida Summer
Repair How to Reset Your AC After a Power Outage
Humidity Why Your House Feels Sticky at 74 Degrees