Air Duct Cleaning in Coral Gables, FL

The Gables’ mature tree canopy adds pollen and organic debris to the air, while older ductwork in its landmark homes benefits from expert cleaning and sealing.

Our insured technicians bring NADCA source-removal equipment to every Coral Gables job, placing your entire HVAC system under suction so dust, pollen, and mold are captured, not scattered through your home. Whether you're dealing with a musty AC smell, high energy bills, allergy flare-ups, or simply overdue maintenance, we help Coral Gables homeowners breathe cleaner air.

Ducting a house that was built without any

The Mediterranean revival houses that give Coral Gables its character were built in the twenties and thirties, with masonry walls, plaster interiors, barrel tile roofs and very little attic. None of them were built with ductwork, because central air conditioning did not exist yet. Every system in a house of that era was fitted decades later, and the duct went wherever there was room: a dropped soffit over a hallway, the back of a closet, a chase built out into the corner of a bedroom, occasionally an attic with thirty inches of clearance at the ridge.

Two things follow. The first is that the installer used the duct size that fit the chase rather than the size the room called for, so the rooms at the end of a tight run have been three or four degrees off since the day the system went in. The second is that a good part of the system sits behind plaster. We clean through the registers and the plenum with the system under negative pressure, and where a run cannot be reached without opening a ceiling we say so rather than telling you the whole house was done.

The newer half of the city behaves differently. The post war blocks near Riviera and Coral Bay and the waterfront builds out toward Gables by the Sea are slab on grade with flexible duct in a vented attic, and their problems are the ordinary South Florida ones: sag, attic heat, and a return sized to the plan rather than to the way the house is lived in.

What the canopy puts into the return

Coral Gables has one of the densest tree canopies in Miami-Dade, and that canopy is why the outdoor air here carries more organic material than the air a mile away. Oak pollen in spring, seed and leaf debris most of the year, and shade that keeps the ground damp, which keeps mold spore counts in outdoor air higher than they are over open pavement.

That would matter little in a sealed house, and a 1926 house is not sealed. Original casement windows, gaps where a duct chase passes through a plaster wall, and a return path that draws part of its air through the building rather than through the filter grille all mean the outdoor load reaches the coil. It is why a one inch filter in a Gables house can load in six weeks through the spring, and why we find dirty coils in houses where the owner changes filters religiously.

When a filter loads, the system does not stop pulling. It pulls around the filter through the gaps in the grille frame, and that air is unfiltered and going straight onto a wet coil. A tight fitting filter of a grade the system can actually breathe through does more for a Gables house than a higher rated one that starves it.

Two and three system houses, and what the city expects to see

A lot of Coral Gables houses, particularly in Ponce Davis, Old Cutler and Cocoplum, are large enough to run on two or three separate systems, one per wing or floor. Each of those is a complete job in its own right with its own coil, filter, drain line and duct, and cleaning one of them gives you a third of a result. We quote per system rather than per house and tell you which one is actually causing the complaint, which is usually the one serving the kitchen and the main living space.

The wing nobody uses fails the opposite way. A system that hardly runs hardly dehumidifies, so a closed guest wing can sit through a Miami summer at 65 or 70 percent relative humidity with a coil that looks clean and unused and is quietly growing. That is a common find in the larger houses here and it stays invisible until somebody opens the door in November.

The last Coral Gables specific thing is the city. Exterior changes here are looked at more closely than in most of the county, so a new roof termination, a vent hood on an elevation facing the street, or anything else that alters how the building reads is a permitting question before it is a duct question. We keep the work inside the building where it can be kept inside, and when something genuinely needs to go through the city we say so before we start rather than after.

Air duct repair in Coral Gables: finding the leak before anyone opens plaster

Air duct repair in Coral Gables starts from a constraint most cities do not have: much of the system cannot be seen without cutting into plaster. So the work starts with measurement and a camera rather than a demolition plan. The registers are taped off, a test fan reads how much air the duct system loses, and a camera goes in through the grilles and the plenum to find where it is going.

In the older houses the leak is usually at a transition, where a run fed through a soffit or a closet chase changes direction or size, or at a boot where the duct meets a plaster ceiling and the seal has dried out over the decades. Many of those can be reached from the grille opening or from whatever attic space exists, and repaired with mechanical fasteners and mastic without opening anything. Where a section truly cannot be reached, you hear that before any plaster is touched, and a single access panel placed where it will not show usually beats opening a whole ceiling.

In the post war slab houses near Riviera and Coral Bay the work is ordinary attic repair: flex reconnected at its collars, sagging runs strapped back up, torn jackets replaced. Repair is priced on scope after the test, from $250 to $2,000 and up, and the test runs again when the work is done, so the improvement is a number you can see. Coral Gables has its own duct repair page further down.

Home ventilation in Coral Gables: how air moves through an older house

Ventilation in an air conditioned house is the route air takes out of the supply grilles, through the rooms and back to the return, plus whatever outdoor air gets in along the way. In a Coral Gables house from the twenties, that route was never designed. The system was added after the fact, bedrooms close against a single return, and outdoor air arrives through casements and gaps rather than through anything controlled.

Three things usually improve it without new equipment. Giving the bedrooms a way back to the return, with a transfer grille or an undercut door, lets supply air flow into a closed room instead of stalling. Sealing the gaps where duct chases pass through plaster stops the system drawing unfiltered air out of the walls. And measuring humidity room by room shows whether a closed wing or a guest suite is sitting much wetter than the rooms the family lives in.

Our indoor air quality check does that measurement, with a camera on the ducts and the air handler and a photo report, for $200 to $500. We do not take air samples or send anything to a lab. If the answer turns out to be new equipment, such as a dehumidifier or a fresh air system, that is an HVAC contractor's work, and we will say so rather than sell you a cleaning in its place.

What Air Duct Cleaning Costs in Coral Gables

Job	Typical Coral Gables price
Air duct cleaning, single system	From $300*
Air duct cleaning, larger or multi system home	$300 to $600*
Dryer vent cleaning	$100 to $200*
Air handler and coil cleaning	Quoted with the duct work

* A starting point, not a flat rate. The number moves with the size of the home, the number of systems and what we find when we look. You get the actual figure before we book, not after the van arrives.

Neighborhoods We Cover in Coral Gables

We work across Coral Gables and the wider Miami-Dade County area, including Coral Gables Riviera, Old Cutler, Ponce Davis, Coral Bay, Golden Gate, Cocoplum and Gables by the Sea. If your street is not on that list it does not mean we do not come to it. Call (813) 300-1379 and we will tell you either way, along with the price, before anything is booked.

Air Duct & HVAC Services in Coral Gables

Every service below is available to Coral Gables residents and businesses:

That covers residential air duct cleaning for houses, condos and townhomes, and commercial air duct cleaning in Coral Gables for offices, medical suites, shops and building common areas, scheduled after hours when the space has to stay open. Air conditioning duct cleaning is the same job under another name: the supply and return ducts, the registers and the ventilation path back to the air handler. Where a musty smell or a mold history is the reason for the call, air vent and duct sanitizing follows the cleaning, never instead of it.