Jacksonville · Duval County
Jacksonville’s Top Dog in Heating & Air
Honest, upfront pricing and comfort techs who treat your home like their own — done right the first time.
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The Great Dane difference
Why Jacksonville Chooses Great Dane
For more than 20 years, Great Dane Heating & Air has kept Jacksonville and Duval County comfortable — one honest repair at a time. We’re a family company with upfront pricing, comfort techs who treat your home like their own, and a soft spot for shelter dogs.
- 4.9★ across 74 Google reviews
- Licensed & insured — FL CAC036942
- BBB A+ accredited business
Our services
Whatever Your Comfort Needs, We’ve Got It Covered
From emergency repairs to brand-new systems — homes and businesses, all over Jacksonville.
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 now — our techs get to you fast and fix it right.
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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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Not sure what you need? Call (904) 512-0091 — we’ll sniff it out.
While you relax, we work
Don’t Sweat the Dog Days of Summer
Honest techs, upfront pricing, and cool air your whole pack can agree on.
Before & after
Old AC Out. New Comfort In.
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.
Monthly specials
Fetch These Deals
Helping Jacksonville save is one more way we give back. Mention a coupon when you call.
Reviews
Barking Good News
★★★★★ 4.9 out of 5 across 74 Google reviews
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.
Building in progress: reviews and the Jacksonville Humane Society story land here next.