Duct Cleaning for St. Augustine and St. Johns County Homes
We put a camera in your ducts first and show you what is in there. If they need cleaning, you get the price before we start. If they don’t, we tell you that too.
Book a visitTell us what it’s doing — we’ll come back fast.
Air Duct Cleaning St. Augustine, FL
Clean Ducts When They Need It, Not on a Schedule
Air duct cleaning in St. Augustine starts with a look inside. The EPA does not recommend cleaning ducts on a schedule. It says to clean them when there is a reason: mold you can see, pests in the ducts, or dust blowing out of the registers. This close to the water, moisture is the first thing we check. We look at the ducts, the coil and the drain pan, show you the pictures, and tell you what we would do.
Great Dane Heating & Air has kept Jacksonville and Duval County comfortable for more than twenty years. We are a family company — the people who answer the phone are the people who show up — with upfront pricing, comfort techs who treat your home like their own, and a soft spot for shelter dogs. Every job we finish gives back to the Jacksonville Humane Society.
Cannot be combined with any other offer. One per household.
Our duct cleaning process
How Duct Cleaning Works in St. Augustine
No mystery, no pressure, and no work done before you’ve agreed to it.
01We look before we quote
We take the registers off, run a camera into the main lines, and check the coil and the drain pan. You see the same pictures we do. If it is clean in there, we say so.
02We protect the house first
We cover the registers and put the system under negative pressure. The dust leaves through our machine, not into your rooms.
03We clean at the source
Brushes and air tools knock the dust loose so the collection unit can pull it out. We don’t spray biocides or coat your ducts with sealant.
04We tell you what caused it
Dirty ducts usually have a cause: a torn return in the attic, a filter that doesn’t seal, or a duct that sweats in summer. We show you the fix so it doesn’t come back.
What’s included
What a St. Augustine Duct Cleaning Includes
No sprays and no sealants. Just the dust out, and a straight answer on why it got there.
A camera look firstThe main lines and the branch runs, before any price.
Every supply and returnNot just the vents you can see from the hallway.
The plenumsThe big boxes where the ducts meet the system.
The coil and blowerCleaning the branches and skipping these is not the job.
Negative-pressure collectionThe dust leaves the house through our machine.
Registers coveredSealed while we work, so nothing blows into the rooms.
Your picturesYou see what we saw, inside your own ducts.
The cause, in plain wordsA torn return, a loose filter or a sweating duct, and the fix.
The honest part
We’ll Tell You If They Don’t Need Cleaning
Duct cleaning is easy to sell to people who don’t need it. Dusty grilles are normal. We would rather show you the inside of your own ducts than sell you a job on a guess.
What you might hear
“Whole-house special, today only.”A low price to get in the door. The upsell comes after.
“You should do this every year.”The EPA sets no schedule. It depends on what is actually in your ducts.
“We’ll fog it with a sanitizer.”Ask what the product is and whether its label allows it in your type of duct.
What we’ll tell you
“Here are your pictures.”Your ducts, not a stock photo.
“This can wait.”The most common thing we say on a duct call.
“Cleaning won’t fix this one.”When the real problem is a leak, a wet section or a loose filter, we say so.
We won’t tell you a duct cleaning lowers your power bill, because it doesn’t. This is what does. ENERGY STAR puts it plainly: in a typical house, about 20 to 30 percent of the air moving through the duct system is lost to leaks, holes and poorly connected ducts. You paid to cool that air, and it is being delivered to your attic.
▶High summer bills
▶Rooms that never get comfortable
▶Ducts running through an attic or garage
▶Tangled or kinked flex runs
So when we put a camera in and the ducts turn out to be clean but the system is leaking, that is what we will tell you.
Old buildings, salt air and a lot of humidity. Here is what each one means for your ducts.
78°Set to 78° — nine months a year
DowntownMany Have No Ducts
Many historic buildings downtown were built long before air conditioning. Some have no ducts at all, or one short run added later. If your home runs on ductless units, there is nothing to clean, and we will tell you that.
Anastasia IslandSalt and Moisture
Closer to the beach, damp salty air reaches the attic and the equipment. Moisture is what lets mold start in a duct or on a coil, so we look for water first.
The atticHot, Humid Attics
Most ducts here run through a hot attic. Crushed or torn insulation lets a duct sweat, and a sweating duct can drip through a ceiling or grow mold.
US‑1 & the west sideFlex Duct and Filters
Newer homes inland mostly use flex duct. A kinked or crushed run moves less air, and a filter that doesn’t seal lets dust slip past it. Cleaning fixes neither, so we check both.
Whatever you’re running
Condensers, Mini‑Splits, Heat Pumps — We Work On All of It
Straight-cool split systems, ductless mini‑splits, heat pumps and package units. If it cools a St. Augustine home, we work on it.
A working air conditioner is comfort. Clean, dry ductwork is part of what keeps it that way — especially in a humid St. Augustine summer, and especially with small people in the house.
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, not a rotating list of subcontractors.
The air they breathe all day
Florida humidity does not just make a house uncomfortable — it feeds what grows in it. Filtration, purification and humidity control keep the air in your rooms clean as well as cold.
Fixed right the first time
We show you the failed part, quote the whole number before we start, then test the system and clean up behind us. Our work is guaranteed — that is the whole point of the name on the truck.
The full price before we start.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!
My experience was beyond my expectations. They did an amazing job replacing my antique air conditioner! Mike gave me a great quote and DJ and his son completed this challenging job amazingly well.
Our outdated A/C system went down for good and I had called multiple other companies with little to no response. I called Great Dane and Mike was at my house in less than 15 minutes.
So glad I went with Great Dane to service my a/c. I highly recommend Quentin, who serviced the unit. He is extremely knowledgeable, highly competent, and up front about potential issues.
I’d been without A/C for quite some time. It was amazing — the care and concern that Mike (and MJ & Brandon) had about my situation. I know I chose the right company.
Straight answers, no jargon — including the ones that cost us money to answer honestly.
How often should air ducts be cleaned in St. Augustine?+
There is no set schedule. The EPA recommends cleaning when there is a reason, like mold you can see, pests, or dust blowing out of the registers. Near the water, we check for moisture first, because damp ducts are where most problems start.
My house smells musty. Is it the ducts?+
Sometimes, but not always. In St. Augustine a musty smell is often humidity in the house or standing water in the drain pan. We check the pan, the coil and the ducts, then tell you which one it is. Cleaning the ducts will not fix a humidity problem.
What does air duct cleaning include?+
A camera look first. Then we cover the registers, put the system under negative pressure, and clean the supply and return runs, the plenums, the coil and the blower compartment. You get the pictures and a plain answer on what caused the dirt.
How much does air duct cleaning cost in St. Augustine?+
It depends on the size of the house and on what the camera shows, so we look first. You get the price before any work starts. St. Augustine is inside our normal service area, at the same pricing as anywhere else we go.
My home has no ducts. Can you still help?+
Yes. Many older St. Augustine homes use ductless units instead. Those need their filters and coils cleaned, not a duct cleaning. We service them and tell you what they need. See our ductless mini-split service.
Do you clean ducts on Anastasia Island and St. Augustine Beach?+
Yes. St. Augustine, Lincolnville, Anastasia Island, Davis Shores, Vilano and St. Augustine Beach are all inside our normal service area. Call (904) 512-0091 or send the form, and we will come take a look.
Is Great Dane licensed for this work?+
Yes. Great Dane Heating & Air is a Florida state certified air conditioning contractor, license CAC036942, and fully insured. You can look the license up before anyone comes to your house.
One call covers the rest of the house.This page is one job. These are the others.
BBB accredited business
