Arlington is on the route most weeks and the houses repeat — the same slab, the same shallow attic, the same room that was added on later. Most visits start from a shorter list than you would expect.
Arlington HVAC Company
AC Repair & HVAC Service in Arlington, Jacksonville
Slab duct, block walls and shallow attics. AC repair and duct work for Arlington, Fort Caroline, Regency and University Park.
AC out? We can come today.
- The full price before we start
- $99 tune-up. Nothing to sign.
Limited‑time offer
HVAC Refresh & Tune‑Up
Cannot be combined with any other offer. One per household.
Schedule AC Repair in Arlington
Tell us what’s going on — we’ll get back to you in a flash.
The Great Dane difference
The Arlington AC Company That Knows the Layout
More than 20 years keeping Jacksonville and Duval County comfortable, one honest repair at a time, and a fair share of those on this side of the Mathews Bridge. A family company with upfront pricing, comfort techs who treat your home like their own, and a soft spot for shelter dogs.
- 4.9 Stars on Google
- Licensed & Insured — FL CAC036942
- BBB A+ Accredited Business
- Installation, Service & Repair
- Heating, Cooling, Air & Ventilation
Heating & Cooling Services
What Comes With an Arlington AC Service Call
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.
Two decades across Duval County, a great deal of it on this side of the Mathews Bridge. The people who answer your call are the same people who show up at your door.
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 pressure
Upfront AC Repair Pricing in Arlington
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.
- A full diagnosis before any quote
- The complete price, upfront
- An honest read on repair versus replace
HVAC Services — Arlington, FL
How AC Repair in Arlington Works
Four simple steps — and no surprises at any of them.
Residential & Commercial HVAC — Arlington, FL
Heating and Cooling for Arlington’s Ranch Homes
From emergency AC repair and duct cleaning to brand-new systems and mini splits — one crew across Jacksonville and Duval County.
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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Gold Maintenance Plan
Two maintenance visits a year, 10% off parts and 20% off air quality products. $199 a year.
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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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Attic Insulation
Blown-in insulation over what is in your attic now, after we check how deep it is.
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Commercial HVAC
Installs, repairs and maintenance that keep Jacksonville businesses comfortable.
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Bard Wall-Mount Units
Service, repair and replacement of Bard and Eubank-style wall-mount units on classrooms, modular offices and shelters.
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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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Not sure what you need? Call (904) 512-0091 — we’ll sniff it out.
Heating and Cooling in Arlington, FL
Need AC Repair in Arlington Today?
Honest techs, upfront pricing, and cool air your whole pack can agree on.
Old AC Out. New Comfort In.
AC Replacement & Installation in Arlington
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.

Air Conditioner Repair & Replacement
Why AC Repair in an Arlington Ranch Home Is Different
Arlington filled in quickly once the Mathews Bridge opened, which means a great deal of it is the same house, built the same way, in the same decade. That decade had its own ideas about ductwork.

These houses sit straight on concrete, and where the original duct was run inside that slab there is no practical way to repair it once it has failed. The answer is to abandon it and go overhead instead. Worth knowing before anybody quotes you a system that still has to breathe through it.
Block walls take heat all afternoon and hand it back through the evening, and in this era most went up with nothing on either face to slow that down. The system is less undersized than it is still working long after sundown.
A low‑pitch roof leaves a shallow attic, which is exactly where the duct and often the air handler had to go. Less room means tighter bends, harder access and runs that were compromised the day they were fitted. It is the first place we look when one end of the house underperforms.
A good half of the ranches out here have gained a room since they were built — a carport closed in, a porch glazed over. Those spaces were rarely added to the original system properly, which is why they bake in August and chill in January while the rest of the house is perfectly comfortable.
Arlington Service Area
Arlington HVAC Service, From the Mathews Bridge to Fort Caroline
Arlington is wide, flat and largely built in one stretch, which makes it one of the more predictable runs we do. This is where the truck actually ends up.
The eastern end, out toward the memorial and the river. Longer lots and a fair number of houses that have been added to twice.
The commercial heart of it, off Atlantic Boulevard. Plenty of residential behind it and a good deal of shop and office work in front.
The older riverside streets, where the houses are larger and the duct runs longer than the Arlington average.
Around Jacksonville University. A mix of original owners and rentals, which usually means a mix of equipment ages on one street.
The north‑south spine. Most of what we run out here turns off it at some point.
The commercial corridor through the middle — restaurants, shops and offices we cover on the commercial side.
& Tune‑Up
Limited‑time offer
HVAC Refresh & Tune‑Up
A full seasonal check‑over of the system you already have — so small problems stay small.
Cannot be combined with any other offer. One per household.
Want both visits a year covered? Gold Maintenance Plan, $199 a year →

HVAC Repair & Replacement in Jacksonville
Should You Repair or Replace Your AC?
No quote needed, no email, no phone number — just tell us what it’s doing and we’ll give you our honest read.
1How old is the system?
2What’s it doing? tick all that apply
3How often has it needed fixing?
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
A Family-Owned AC Company That Gives Back
There is a reason the dog got top billing. Great Dane Heating & Air was put together by people who are hopeless about animals, and from the start the plan was that the company would be worth something to the pet population of Duval County as well as to its customers.
That means rescue events, hours spent with animals still waiting at the shelter, and a Rescue of the Week going out to everyone who follows us. It is also why we are a Paw Partner Corporate Sponsor of the Jacksonville Humane Society.
Meet the Jacksonville Humane Society →
Licensed & Insured, FL CAC036942
Licensed AC Repair for Arlington’s Sixty-Year-Old Houses
A working air conditioner is comfort. In a block house on a slab, with the duct wherever the builder could fit it, getting every room there takes knowing the house type as well as the equipment.
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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 counts for a lot in a house where the access is tight and most of the work is overhead.
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What the ducts are carrying
Duct in a shallow attic collects what a shallow attic has in it, and Florida humidity does the rest. Filtration, purification and humidity control deal with the air itself rather than only its temperature.
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No surprises on the invoice
You see what failed and the whole number before anything is touched, and the system gets tested before we leave. Our work is guaranteed — that is the whole point of the name on the truck.
Our work
Our Recent AC Installation & Repair Work
Real installs from around Jacksonville — straight from our techs’ job sites.
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
New Carrier condenser, strapped down
Charging a new system
Air handler and high-efficiency filter
New condenser set on pavers
Attic air handler, ducts reconnected
Tucked into a brick alcove
Two systems, one house
Garage closet swap, inspected
Fresh pad, clean line set
Clearance kept, shrubs trimmed back
Delivery day
The big teal truck
Quality inspector on duty
Our smallest biggest fan
Come say hi at the home show
Arlington specials
HVAC Coupons & Specials in Arlington
Helping Arlington save is one more way we give back. Mention a coupon when you call.
One per household. Cannot be combined with any other offer.
See all four offers →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.
Beyond reproach. Prompt, professional, and had the problem diagnosed and repaired the same day. Integrity, honesty and great customer service.
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.
They replaced our entire AC unit and did some duct work. Professional staff and excellent communication. Top quality service and work!
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!
From the blog
Straight Answers From a Jacksonville Air Conditioning CompanyWhat We’d Tell You About HVAC in Jacksonville, FL
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Airflow Is a Mini Split a Good Fit for a Florida Room or Home Addition?
A ductless mini split is usually the better fit for a Florida room or addition when your main AC has no spare capacity or…
Airflow What a Ductwork Replacement Recommendation Should Include
If you were told your ducts need replacing, ask for proof: attic photos, static pressure readings, leak and crush points, insulation notes, and sizing…
Repair AC Running but Not Cooling? Why, and What to Check
When your AC runs but doesn't cool the house, the usual causes are a bad capacitor, a dirty filter or coil, a refrigerant leak,…
FAQ
AC Repair Questions We Get in Arlington
The questions Jacksonville asks us most — straight answers, no jargon.
Why does my AC blow cold air but the house never cools down?
In a block house that often means the system is fine and the envelope is not. Concrete walls that absorbed heat all afternoon keep releasing it into the evening, so the equipment is still fighting at nine at night. We measure the temperature split across the coil first — that says within a few minutes whether the machine is underperforming or simply outnumbered.
Why is one end of my house always hotter than the rest?
With the duct in a shallow attic, the run to that end was fitted around the roofline rather than sized for the distance. Tight bends and crushed sections both cost airflow, and neither is visible from inside the house. Measuring at that register and again at the air handler tells you which one you have.
The ducts are in the slab. Can they be cleaned or repaired?
Cleaned sometimes; repaired almost never. Once a run cast into concrete has cracked or taken on water there is no access to it worth having, and the honest answer is usually to abandon it and run new duct overhead through the attic. That is a bigger job than a cleaning and a far smaller one than living with it.
Can a modern system even work with duct this old?
Not always at its rating. Equipment has become a great deal better at moving air efficiently, and the duct in these houses was sized for what was normal sixty years ago. A high‑efficiency system on an undersized run gives you the price of the new machine and the airflow of the old duct. We measure the duct before quoting the system.
Does it have to go back in the attic?
Not necessarily. Where attic access is genuinely poor, a ductless head serving the problem end of the house avoids the run altogether. It is not the right answer for every layout, but it has solved a lot of Arlington add‑on rooms without anybody dragging duct across a ceiling.
The carport was closed in years ago. Why does it never keep up?
Because it was almost certainly never added to the system properly. A converted carport or glazed porch is load the original equipment was never sized for, and it is usually fed by extending the nearest duct rather than given anything of its own. It is the single commonest complaint out here, and it has three or four honest fixes depending on the layout.
The air handler is in the attic and awkward to reach. Does that matter?
It matters for what gets done rather than for what goes wrong. Equipment that is difficult to reach tends to be looked at less often, and the things that get skipped — the drain, the coil, the filter — are exactly the things that cause failures. If yours is up there, a scheduled visit is worth more than it would be in a garage.
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 where the equipment lives in the attic, it is also the one time anybody looks at it properly. Cannot be combined with any other offer, one per household.
Would insulation help more than new equipment?
In this housing stock it frequently would. A block wall with nothing on the inside face, and an attic whose insulation has thinned or settled, both make the system run longer for the same result. We will tell you when that is where your money goes furthest, even though it is not a sale for us.
Do you do AC repair in Arlington?
It is inside the normal service area at the same pricing as anywhere else we go — Fort Caroline, Regency, Arlingwood, University Park and the streets off Monument Road included. 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. With houses this age the expectation is usually that everything must be due, and often it simply is not. If a part is drifting but has not failed, you get told that, with the reading behind it, and the decision stays yours.
What should I check before I call for AC repair?
Three things that cost nothing. Check the breaker for the air handler and for the outdoor unit. Look at the filter — a collapsed one starves the system and imitates a much larger fault. And look at the outdoor unit itself; these lots have had sixty years to grow a hedge somewhere awkward, and airflow around that cabinet matters.
Limited‑time offer
$99 HVAC Refresh & Tune‑Up
A full seasonal check‑over of the system you already have — so small problems stay small.
Cannot be combined with any other offer. One per household.
AC out? We can come today.
- 4.9 stars
- The full price before we start
- $99 tune-up. Nothing to sign.
Serving the Jacksonville, FL area
HVAC Service Near You
Fast, honest HVAC service across Jacksonville, Duval County and the surrounding Northeast Florida communities.



