Air Duct Cleaning in St. Johns - One Flat Price, Before-and-After Photos

Air Duct Cleaning in St. Johns, FL

Dryer vent cleaning in St. Johns runs $95-$175 for a standard single-vent home, while full duct cleaning for the typical two-story production house here lands between $450 and $850 depending on system size. What makes St. Johns different is the housing stock: thousands of homes built since 2010 in Durbin Crossing, RiverTown, and Beachwalk are running HVAC systems that were sealed up with drywall dust and insulation fibers still inside the ducts from day one. Most original buyers never knew to check, and the result is a community where post-construction contamination is the rule, not the exception. Call (806) 606-6902 and we’ll give you a written price before any work starts.

Call (806) 606-6902

Why St. Johns Homes Are Different

St. Johns is one of the fastest-growing communities in the United States, and that growth leaves a specific signature inside the ductwork. Master-planned subdivisions like Julington Creek Plantation and Durbin Crossing were built fast through the 2010s and 2020s, and in nearly every one of those homes the HVAC system was installed before the drywall finishing was complete. That means the first time the air handler fired up, it pulled drywall dust, wood particulates, and loose insulation fibers into the return side of the system, where the material packed against boot collars and settled in the elbows. We see it constantly: a technician in a 4-year-old home in RiverTown pulls a register and finds a compacted ring of drywall dust against the collar that has been there since the day the builder handed over the keys.

Humidity makes it worse. Northeast Florida air keeps the inside of ductwork cool and damp for nine or ten months a year, and that moisture turns construction debris into a substrate for mold and mildew, particularly on the return side where dust collects fastest. These homes are also large, commonly dual-zone with extensive duct runs across two floors, so there’s more surface area holding debris than in the older, single-story stock you find elsewhere in the region. The defining job in St. Johns is a first-time post-construction cleaning on a house that was never clean to begin with.

Our Main St. Johns Services

Most St. Johns homeowners call us for one of two reasons: the system has never been cleaned since construction, or the HVAC unit itself is carrying debris through the coil and blower. Both have dedicated pages for this city.

Air Duct Cleaning in St. Johns

Full duct cleaning in St. Johns means running a negative-pressure extraction system through every register, boot, trunk line, and return in the house, then photographing the inside of each run before and after so you can see what was actually removed. In homes from Durbin Crossing and RiverTown, that first cleaning typically pulls out construction debris that has been recirculating since the original build. We document every run and hand you the photo record as part of the job. See Air Duct Cleaning in St. Johns for full pricing and process.

HVAC Cleaning in St. Johns

HVAC cleaning addresses the mechanical side: evaporator coil, blower wheel, blower housing, and the drain pan. When the coil in a St. Johns home is coated with drywall dust from construction, the system loses cooling capacity and runs longer cycles, which pulls more humid air across an already dirty coil. That compounds the problem. We clean the coil and blower, clear the condensate path, and document the before and after. See HVAC Cleaning in St. Johns for what the job includes and what it costs.

Before

After

Dryer Vent Cleaning in St. Johns

Dryer vent cleaning in St. Johns usually costs between $95 and $175, and the job matters more here than people expect because many of these homes vent through roofs or side walls that run through two-story framing, which means longer runs, more elbows, and more places for lint to pack in. New-construction homes in Beachwalk and Julington Creek Plantation often have vent runs installed by the lowest-bidder subcontractor, with the transition duct behind the dryer kinked or the vent cap painted shut at the exterior, and the homeowner never sees it until the dryer starts taking two cycles to dry a load. We clean the full run from the dryer connection to the exterior termination, photograph the inside of the vent before and after, and hand you the written record. This is part of our Dryer Vent Cleaning service.

Dryer Vent Inspection

Signs you need it

Your dryer takes more than one full cycle to dry a normal load, the exterior vent flap barely moves when the dryer runs, or you notice a burning smell during the cycle.

What it costs in St. Johns

A dryer vent inspection in St. Johns runs $79-$129 when booked as a standalone visit, and it is credited toward the cost if you proceed with cleaning.

How we do it

We run a camera through the full vent run from the dryer connection to the exterior cap, measure the run length and count the elbows, and photograph every restriction we find.

Lint Removal

Signs you need it

Clothes come out of the dryer still damp after a full cycle, or you can see lint accumulating around the exterior vent cap and the area behind the dryer.

What it costs in St. Johns

Lint removal as part of a full dryer vent cleaning in St. Johns falls in the $95-$175 range for a standard single-vent home, with longer runs on the higher end.

How we do it

We use rotating brushes and high-volume negative air to break the lint pack loose and pull it out the exterior termination, then run the camera again to confirm the full run is clear.

Bird Guard Installation

Signs you need it

You hear birds or scratching inside the vent, nesting material has gathered at the exterior cap, or the vent flap is wedged open.

What it costs in St. Johns

Bird guard installation in St. Johns runs $65-$125 depending on the vent cap size and whether we are replacing a damaged cap at the same time.

How we do it

We remove the existing cap, clear any nesting, install a screened guard that blocks entry, and confirm airflow is restored to the manufacturer’s spec.

What Dryer Vent Cleaning Costs in St. Johns

How long does dryer vent cleaning take in St. Johns?

Most St. Johns dryer vent cleanings take 45 to 90 minutes depending on run length and how compacted the lint has become. You’ll have a written price before we start, and the photo record in hand when we leave.

Why does my St. Johns dryer vent clog so fast?

Two-story construction and longer vent runs through interior walls mean more surface area for lint to catch, and the humid air makes lint sticky. If your run has multiple elbows, cleaning every 12 to 18 months is typical. Call (806) 606-6902 for a written quote.

Duct Repair & Sealing in St. Johns

Duct repair and sealing in St. Johns usually runs $350-$1,900 depending on how much of the system has separated, and the problem here is often builder-grade ductwork that was never sealed correctly in the first place. In two-story homes, the trunk lines and flex runs in the attic or between floors take heat and humidity year-round, and the foil tape used at original installation dries out, peels, and lets conditioned air leak into unconditioned space. That means you’re paying to cool your attic while the rooms at the far end of the run never reach temperature. We inspect every accessible run, photograph the failed joints, and give you a written scope before touching anything. This is our Duct Repair & Sealing service.

Duct Sealing

Signs you need it

Some rooms in your St. Johns home never reach the thermostat setting, your energy bills run high during summer, or you can see visible gaps at the duct joints in your attic.

What it costs in St. Johns

Duct sealing in St. Johns typically falls between $350 and $900 depending on the number of accessible joints and the run length involved.

How we do it

We locate every failed joint by hand and with a thermal check, then apply mastic and mesh over the connections so the system holds air the way it was supposed to from day one.

Flex Duct Repair

Signs you need it

A flex run has collapsed, torn, or pulled away from the collar, and the room it serves has noticeably weak airflow from the register.

What it costs in St. Johns

Flex run replacement or repair in St. Johns generally runs $250-$600 per run depending on run length, diameter, and how easily the attic or chase is accessible.

How we do it

We remove the failed section, reattach or replace the flex with proper sizing and support straps, and seal both ends at the collar with mastic, not tape.

What Duct Repair & Sealing Costs in St. Johns

How do I know my ducts are leaking in St. Johns?

Uneven room temperatures, dusty air, and higher summer bills are the three common signs, especially in two-story homes where attic runs bake in the heat. A thermal check and visual inspection confirms the specific leaks before any work is quoted.

Is duct sealing messy?

Mastic sealing is a controlled process we do with drop cloths and negative air where needed, and we photograph the completed work before putting the access panel back. You get the written scope first, so there are no surprises. Call (806) 606-6902.

Air Quality & Sanitizing in St. Johns

Air quality and sanitizing work in St. Johns typically runs $250-$950 depending on whether we’re treating mold, installing UV, or addressing odor, and the demand here tracks directly to the housing stock. When a newly built home in Durbin Crossing or RiverTown runs its AC for the first full summer, the combination of construction dust and nine months of humidity creates exactly the conditions where mold colonizes the return side of the system. We treat the source, not the symptom, and we document the microbial load before and after with photographs and a written record. This is our Air Quality & Sanitizing service.

Mold Treatment

Signs you need it

You smell a musty odor when the AC kicks on, see dark spotting around registers or inside the return, or someone in the house has respiratory symptoms that improve when they leave the home.

What it costs in St. Johns

Mold treatment on the coil and accessible duct surfaces in St. Johns runs $300-$700 depending on the affected area and whether the coil needs to be pulled for access.

How we do it

We clean the affected surfaces with HEPA extraction, apply an EPA-registered antimicrobial to the coil and plenum areas, and photograph the result so you can see the change.

UV Light Installation

Signs you need it

You’ve had repeated coil mold issues, or your air handler sits in a humid attic or closet where the coil never fully dries between cycles.

What it costs in St. Johns

UV light installation in St. Johns runs $450-$950 including the unit, mounting, and wiring to the air handler, depending on whether we are installing at the coil, the return, or both.

How we do it

We mount a UV-C lamp inside the air handler aimed at the coil and drain pan, wire it to run with the blower, and verify the lamp output with a meter before we finish.

What Air Quality & Sanitizing Costs in St. Johns

Will sanitizing remove the musty smell in my St. Johns home?

Yes, when the odor is coming from biological growth inside the system. We treat the source on the coil and plenum, not just the air passing through, and the smell goes with the source. Call (806) 606-6902 for a written quote.

How do I know mold is really gone after treatment?

You get a documented photo record of the affected surfaces before and after, plus a written description of the scope and what was applied. The record is yours to keep, and the 365-Day Done Right Promise stands behind it.

Brands We Service in St. Johns

We service equipment from Trane, Carrier, Lennox, Rheem, Goodman, and Daikin, and we keep common replacement parts, mastic, flex runs, and vent caps in our vehicles for St. Johns jobs. Most repairs are completed the same visit; if a part isn’t on the truck, we tell you before you pay. Full details on our brands.

Pricing for Air Duct Cleaning in St. Johns, FL

Neighborhoods We Serve in St. Johns

We work throughout St. Johns, with most calls coming from the master-planned communities where the housing stock is newest and the post-construction duct issues are most consistent. Typical scheduling runs within the same week as your call, often sooner.

• Durbin Crossing
• RiverTown
• Beachwalk
• Julington Creek Plantation
• St. Johns Golf & Country Club

Service Area - Cities Near St. Johns

Beyond St. Johns, we serve the broader Northeast Florida region and the state’s major metros. That includes Jacksonville, FL to the north, Miami, FL and Tampa, FL on the Gulf and Atlantic coasts, and Orlando, FL in the center of the state. Call and we’ll confirm coverage for your address.

FAQs About Air Duct Cleaning in St. Johns