How Much Does Air Duct Cleaning Cost in Lafayette, LA?

Most air duct cleaning quotes in the Lafayette area land between $300 and $1,000 per HVAC system. Industry guidance from NADCA puts a complete system cleaning at $450 to $1,000, while national project data averages closer to $389. That gap is almost always scope, not savings. Vent count, number of systems, duct access, and contamination decide where your home falls.

Key takeaways

• Duct cleaning is priced per system, not per house. A home with two air handlers is two cleanings and close to two prices.
• Per-vent quotes (25–50 each) and per-square-foot quotes (0.15–0.30) describe the same work differently. Convert both to one total before you compare them.
• Coil cleaning, blower cleaning, dryer vents, and camera inspections are usually add-ons. Ask what the base price leaves out, not just what it includes.
• The EPA does not recommend cleaning ducts on a schedule, only when there is substantial visible mold, vermin, or debris actually blowing into your rooms.
• A $79 whole-house special is a scope, not a discount. NADCA warns these ads routinely exclude the air handler, blower, coils, and registers.

Air duct cleaning is one of the few home services where two honest companies can quote the same house and land $600 apart. Neither is necessarily overcharging. They are describing different amounts of work, and almost nothing in the advertising makes that clear.

This guide breaks down what Lafayette homeowners actually pay, how the three common pricing methods work, which items get billed separately, and how to read two quotes side by side so you can tell which one covers your whole system.

How Much Does Air Duct Cleaning Cost in Lafayette, LA?

The honest answer is a range, and the range is wide for a reason. What follows is what the published data actually says, what it covers, and how to apply it to a home in Acadiana.

Average Cost and Typical Price Range

Two credible sources give two different numbers, and understanding why is worth more than either figure on its own.

NADCA, the National Air Duct Cleaners Association, puts professional air duct cleaning for an average-sized home in a broad band of $450 to $1,000. That figure describes cleaning an entire HVAC system, supply and return ducts, registers, grilles, plenums, and the equipment the air passes through.

Angi’s 2026 cost data, drawn from tens of thousands of completed projects, reports a national average of $389, with most homeowners spending between $271 and $509. HomeAdvisor lands in nearly the same place.

The two sets of numbers are not in conflict. Project-average data includes every job booked under that heading, from a full system cleaning down to a crew running a vacuum through the supply registers for two hours. NADCA’s range describes the thorough version. When a quote comes in well under $300 for a whole house, the scope is usually the explanation.

For a practical planning number: a single-system Lafayette home with standard access and no mold or pest problem commonly falls in the $350 to $700 range. Larger homes, difficult attic runs, and second systems move it up from there.

Lafayette Costs vs. National Averages

There is no published pricing survey specific to Lafayette, so treat national figures as a sanity check rather than a quote. What national data does not capture are the local conditions that move the number.

Most Acadiana homes are slab-on-grade with the air handler and the majority of the duct run in an unconditioned attic. Attic work is slower and hotter than basement work, and crews price for the time. Our humid subtropical climate also means moisture is a standing condition rather than a seasonal one, so contamination questions, damp insulation, and microbial growth on duct interiors come up more often here than in dry climates, and they are what turn a routine cleaning into a remediation job.

Working in your favor: most homes in the Lafayette, Broussard, and Youngsville area run a single HVAC system, and labor rates across the Gulf South generally sit at or below the national average. A straightforward one-system cleaning here should not be quoted at the top of the national band unless something specific justifies it. If it is, ask what.

Quick Price Table by Home Size

The estimates below are built from published national per-vent and per-square-foot rates applied to typical home sizes. They are a reference for checking whether a quote is reasonable, not a price list.

One caution on the last two rows. A home with two air handlers is not a single job with a bulk discount. Each system has its own trunk lines, its own coil, and its own blower, and reputable companies price them individually. A quote that covers a two-system home for the price of one is a quote that is only cleaning half the house.

How Is Air Duct Cleaning Priced?

Three pricing methods are common, and companies rarely explain which one they are using until you ask. Knowing the math behind each one is the fastest way to compare quotes that look nothing alike.

Cost per Vent vs. Cost per Square Foot

Per-vent pricing runs roughly $25 to $50 per supply vent, according to HomeGuide’s cost data. A 14-vent home at $35 a vent works out to about $490.

Per-square-foot pricing runs $0.15 to $0.30 per square foot. A 2,000-square-foot home lands between $300 and $600 on the same basis.

The two methods usually produce similar totals for a typical house, which makes the difference between them less about price and more about what gets counted. The question worth asking on any per-vent quote is simple: does that count include return vents? Returns are larger, dirtier, and often fewer in number, and some companies price only supplies and bill returns separately. A home with 14 supplies and 2 returns can become a noticeably bigger invoice once the returns are added at the end.

Also ask whether the main trunk lines and the plenums, the large boxes where ducts connect to the air handler, are inside the per-vent figure. They hold most of the debris in a system, and cleaning them sometimes requires cutting and patching an access opening.

Whole-System Packages and Minimum Service Charges

Per-system pricing is the method most contractors prefer, and it is the easiest one for a homeowner to verify. One price covers one complete HVAC system regardless of how the vents are counted, which removes most of the room for add-ons later.

Minimum service charges explain a pattern that surprises people: a 900-square-foot home often does not cost half of what a 1,800-square-foot home costs. Setting up negative-pressure equipment, protecting floors, and sealing registers takes the same crew the same amount of setup time in a small house as in a large one. Below a certain size, you are paying for the visit more than the square footage.

If you own a smaller home, this is an argument for bundling. Adding a dryer vent cleaning or a coil cleaning to a visit you are already paying setup costs on is usually cheaper than booking it separately later.

Hourly Rates vs. Flat-Rate Estimates

Hourly duct cleaning labor runs about $90 to $125 per hour, and a typical residential job takes anywhere from three to eight hours depending on home size, duct type, and access.

Run that math before accepting an hourly quote. At $110 an hour, a job estimated at “four to six hours” is a $440 to $660 job, and the estimate is the contractor’s, not a cap. Hourly pricing is reasonable when the scope genuinely cannot be known in advance, such as a system with suspected contamination that has not been inspected yet. For a standard cleaning on a system someone has already looked at, there is no good reason the price cannot be fixed.

Ask for a flat rate in writing whenever the scope is knowable. It moves the risk of a slow afternoon off your invoice and onto the company that estimated the job.

What Factors Affect Air Duct Cleaning Costs in Lafayette?

NADCA lists ductwork type, system size, number of systems, square footage, accessibility, contamination level, geography, and crew size as the variables that move a price. Here is what each one means for a home in Acadiana.

Home Size, Ductwork Layout, and Number of HVAC Systems

Square footage matters less than two things it loosely predicts: how many feet of duct exist and how many systems serve them.

A compact 2,200-square-foot home on one system with short, direct runs is a cheaper job than a sprawling 1,900-square-foot home with an addition, a long trunk line, and vents that branch twice before reaching a room. Layout drives labor, and labor drives the invoice.

System count is the single largest multiplier. Two-story homes and houses that have been added onto frequently run two air handlers, and each one is priced as a separate job. Confirm your system count before you call for quotes; it is the most common reason a phone estimate and a final invoice disagree.

Accessibility and System Complexity

In most Lafayette-area homes, the air handler and ductwork live in the attic. A technician working in an attic in July is moving slowly by necessity, and crews build that into their pricing.

Specific access conditions that raise a quote:

• Low-clearance attics where equipment has to be hand-carried and positioned in stages
• Ducts buried under blown-in insulation that must be uncovered and re-covered
• Systems with no existing access openings, where the crew must cut and properly patch entry points into trunk lines and plenums
• Closet or crawlspace air handlers with limited room to work around
• Zoned systems with dampers that need to be worked around rather than through

None of these are upcharges in a negative sense. They are real hours. What matters is that they appear in the estimate rather than on the final bill.

Duct Material and Level of Contamination

Rigid sheet metal duct is the most straightforward surface to clean and the most forgiving. Flexible duct, the insulated, accordion-walled tubing common in newer Acadiana construction, is more delicate; aggressive brushing can tear the inner liner, so the methods used are gentler and sometimes slower.

Internally insulated duct and fiberglass duct board carry a cost risk worth knowing about before you book. The EPA is direct on this point: if insulated ducts get wet or moldy, the insulation cannot be effectively cleaned and should be removed and replaced. In a climate as humid as ours, that scenario is not rare. A cleaning quote can become a replacement quote after inspection, which is one more reason to have the system looked at before committing to a price.

Contamination level works the same way. Ordinary household dust is a cleaning job. Visible microbial growth, a rodent nest, or construction debris from a remodel is a remediation job, and remediation is priced separately from cleaning.

Labor Rates and Additional Service Requirements

Duct cleaning is almost entirely labor. There are no expensive materials, which means the invoice is crew hours plus equipment time, and crew size scales with the job. A large or heavily contaminated system may need two or three technicians, and the hourly figures quoted earlier apply per technician on site.

Add-on requirements are the other half. If the inspection turns up a coil coated in biofilm, a dryer vent packed with lint, or duct sections pulled loose at a joint, those are separate line items with separate prices. The next section covers what each one typically costs.

What’s Included and What Costs Extra

This is where most of the confusion between quotes lives. Two companies can both say “whole system” and mean very different lists.

What’s Included in Professional Air Duct Cleaning

A complete HVAC system cleaning, as the industry defines it, covers the full path air travels:

• Supply ducts , the runs carrying conditioned air to each room
• Return ducts, the runs pulling air back to the air handler, typically the dirtiest part of a system
• Registers, grilles, and diffusers, the covers at each opening, removed and cleaned rather than vacuumed through
• Supply and return plenums, the large connection boxes at the air handler, where debris collects most heavily
• Main trunk lines, the primary distribution runs

The method matters as much as the list. A proper cleaning uses negative pressure from a truck-mounted or portable vacuum to put the whole system under suction, with mechanical agitation, brushes, and air whips, dislodging debris so it travels to the collection unit instead of into your rooms. A crew running a shop vacuum at each register is doing something different, and it should not be priced the same.

HVAC Coil and Blower Cleaning

Here is the most common gap between what people assume and what they bought. The evaporator coil and blower assembly sit inside the air handler, not inside the ductwork, and many duct cleaning quotes exclude both.

Expect roughly $150 to $500 for coil cleaning and $150 to $400 for blower cleaning as separate items.

They are often worth doing. In a humid climate, the evaporator coil runs wet for much of the year, and a coil carrying a layer of dust and biofilm restricts airflow through the entire system, which affects performance more directly than dust sitting on a duct wall. If your real complaint is weak airflow or a musty smell when the system kicks on, the coil and blower are frequently closer to the cause than the ducts are.

Before paying for these as add-ons, check what your HVAC maintenance plan already covers. Coil cleaning is a standard part of many seasonal service visits.

Video Inspection and Dryer Vent Cleaning Costs

A camera inspection of the duct interior typically runs $80 to $180 when billed on its own. Many companies fold a basic inspection into the estimate at no charge, and some apply the fee toward the job if you proceed.

A camera is genuinely useful for deciding whether to clean at all. It is also the tool most often used to sell work you do not need. Ask to see the footage yourself, ask which section of your system you are looking at, and be skeptical of generic-looking images that could have come from any house.

Dryer vent cleaning runs about $100 to $250 as a standalone service and usually costs less when added to a duct cleaning visit, since the setup is already paid for. This one is worth scheduling regardless of what you decide about your ducts; a lint-packed dryer vent is a documented fire risk, which is not something that can be said about ordinary duct dust.

Pest and Rodent Removal Costs

If rodents or insects have nested in the ductwork, that is remediation rather than cleaning, and it is priced separately. The sequence also matters: the infestation has to be resolved and the entry points sealed before cleaning is worth paying for, which often means a pest control company comes first.

Contaminated insulation and duct sections may need replacement rather than cleaning. Costs vary too widely with the extent of the problem for a published range to mean much, so get this scoped specifically rather than accepting a flat “pest cleanup” line item.

Mold Inspection and Remediation Costs

In a climate where indoor humidity is a year-round condition, this is the add-on Lafayette homeowners most often run into. Mold and mildew remediation commonly runs $1,100 to $3,400 depending on extent and location.

Two points before you accept a mold finding. First, the EPA notes that a substance that looks like mold can only be confirmed as mold by an expert, sometimes with laboratory analysis, so a technician pointing a flashlight into a duct is not a diagnosis. Second, and more important, mold in ducts is a moisture problem wearing a mold costume. Cleaning without correcting the moisture source means paying twice.

If this is where your situation is heading, our guide to mold in air ducts covers the health considerations and what actually fixes it.

Duct Repair and Replacement Costs

Inspection sometimes finds disconnected joints, crushed flex duct, or torn insulation. Duct replacement typically runs $35 to $55 per linear foot installed, and whole-system sealing projects range considerably higher.

There is a decision hiding in here. If a system is leaking enough to pull attic dust into the airstream, cleaning it treats the symptom. Sealing or repairing the leaks treats the cause, and it also addresses the comfort and humidity complaints that usually come with leaky ducts. Our ductwork installation guide walks through what that work involves and what it costs in Louisiana homes.

Is Air Duct Cleaning Worth the Cost?

Sometimes clearly yes, often no, and the difference is specific enough that you can usually tell which situation you are in before anyone visits.

DIY vs. Professional Cleaning Costs

There is real DIY value here, and it is not duct cleaning.

What you can do yourself, safely and for almost nothing: replace the air filter on schedule, pull the register and return grille covers and wash them, vacuum as far into each opening as the hose reaches, keep furniture and rugs off supply and return vents, and keep the dryer vent termination clear outside. A filter runs $10 to $40 and does more for the air in your rooms than most of what gets sold as duct cleaning.

What DIY cannot reach is the part that matters. Trunk lines, plenums, and the long runs between branches require negative pressure on the whole system to pull debris out rather than push it around. A shop vacuum at a register moves dust further into the duct. Rental equipment does not solve this, and the EPA notes that duct cleaning performed improperly can cause problems rather than fix them.

One boundary worth naming: cleaning inside the air handler cabinet, around the coil, blower, and electrical controls, is not homeowner work. Those components sit next to live high-voltage connections and a blower motor, and the cabinet should stay closed unless a technician has the system properly shut down.

When Paying for Cleaning Makes Sense (and When It Doesn’t)

The EPA’s guidance on air duct cleaning is the most useful filter available, partly because the EPA has nothing to sell. Its position: duct cleaning has never been shown to prevent health problems, studies do not conclusively show that dust levels in homes rise because of dirty ducts, and a small amount of household dust in ductwork has not been shown to pose a health risk. Much of what settles in a duct sticks to the duct wall rather than traveling into the room.

The EPA does not recommend cleaning ducts on a routine schedule. It recommends cleaning when there is a reason, specifically:

• Substantial visible mold growth inside hard-surface ducts or on other system components
• Vermin infestation: evidence of rodents or insects in the ductwork
• Excessive debris clogging the ducts, or particles visibly released into the home through the supply registers

There are a few other sensible triggers: after a remodel that put drywall dust or sawdust into the system, after water intrusion reached the ductwork, and when moving into a home whose system history you do not know.

Situations where the money is usually better spent elsewhere: dust on the register covers with no visible problem inside the duct; allergy symptoms with no evidence of duct contamination, where filtration and indoor air quality equipment address the cause more directly; and a system that was cleaned within the last few years with no change in conditions since.

On frequency, the industry commonly cites a three-to-five-year interval, while the EPA’s position is as-needed. Both are defensible; one is a maintenance habit, the other is a condition-based trigger, but note which one you are being quoted against. “It’s been three years” is a sales calendar, not an inspection finding. Our breakdown of what the EPA actually says about duct cleaning goes deeper on the evidence.

One case removes the question entirely. If your home is served by a ductless mini-split system, there is no ductwork to clean. Maintenance is filter cleaning and periodic service of the indoor units, and anyone quoting you duct cleaning for a ductless home has not looked at your system.

How to Compare Air Duct Cleaning Quotes in Lafayette

Get at least two quotes, and give both companies the same information so the numbers are comparable.

What Information to Provide for an Accurate Estimate

The more of this you have ready, the closer a phone estimate will land to the final invoice:

• Approximate square footage of conditioned space
• Number of HVAC systems; count the air handlers, not the thermostats
• Vent count, supplies and returns listed separately
• Where the equipment and ducts are: attic, closet, crawlspace
• Duct type, if you know it: rigid metal, flexible, or insulated duct board
• System age and whether the ducts have ever been cleaned
• The specific reason you’re calling: visible growth, a musty smell, a recent remodel, dust from the registers, a rodent problem

That last one changes the quote more than anything else on the list. “I want my ducts cleaned” and “there’s a musty smell every time the AC starts” lead to different scopes, and the second one may lead to a different service entirely.

How to Compare Inclusions, Additional Fees, and Questions to Ask

A price only means something next to a scope. Ask every company the same questions:

1. Is this price per system or for the whole house? If I have two systems, what is the total?
2. Does it include return ducts, plenums, and main trunk lines, or supply vents only?
3. Are the coil and blower included, and if not, what do they cost?
4. Will you need to cut access openings, and is patching them included?
5. What equipment do you use- truck-mounted or portable vacuum and how is debris agitated?
6. Is there a trip charge, fuel fee, or minimum service charge on top of the quote?
7. What happens if you find mold or pest activity after starting? Is there a change-order process, or does the price change on the spot?
8. Can I have the scope and price in writing before work begins?

Question seven is the one that prevents most bad days. A written answer to it turns a surprise into a decision you get to make.

How to Spot Cheap Offers and Bait-and-Switch Pricing

NADCA warns homeowners directly about very low-priced “whole house” specials: these offers frequently cover only limited portions of the system and exclude the air handler, blower fans, coils, registers, and the access openings needed to clean properly.

The pattern is consistent. A $79 coupon buys a visit, not a cleaning. The crew arrives, runs a camera, finds something alarming, and the job becomes $900, with the pressure applied while equipment is already in your hallway.

Red flags worth walking away from:

• A firm whole-house price quoted over the phone with no questions about system count or vent count
• A per-vent price that climbs on arrival because returns, trunk lines, or “oversized” vents were not counted
• Mold declared from a photo, with same-day remediation pressure and no offer to confirm it
• A sanitizer, deodorizer, or biocide pushed as mandatory; the EPA advises homeowners to be fully informed before agreeing to any chemical treatment inside ductwork, and it is never a substitute for physically removing debris.
• No written scope, no local address, and no itemized invoice

The reverse is also worth knowing: the highest quote is not automatically the most thorough one. What you are comparing is the scope-to-price ratio. A $650 quote covering two systems, coils, and returns is better value than a $400 quote covering supply vents on one of them.

Get an Air Duct Cleaning Estimate in Lafayette, LA

For most Lafayette homes, a complete cleaning of one HVAC system falls somewhere between $350 and $700, with the full published band running $300 to $1,000 and multi-system homes priced per system. Three things decide where you land: how many systems you have, how hard the ductwork is to reach, and whether anything beyond ordinary dust is in there.

The more useful question is whether you need the cleaning at all. If you have visible growth inside the ducts, evidence of pests, or debris coming out of the registers, the EPA’s criteria are met, and the money is well spent. If the complaint is a musty smell, weak airflow, or dust that keeps coming back, the cause is more often a dirty coil, a leaking duct run, or a humidity problem, and cleaning the ducts will not fix any of those.

That is worth settling before you spend the money, and it takes an inspection rather than a phone call.

Fontenot’s Air Conditioning & Heating has served Acadiana from Broussard since 2007, working on indoor air quality, humidity control, ductwork concerns, and system performance for homeowners and small businesses in Lafayette, Broussard, Youngsville, and the surrounding area. Our team is family-owned and available seven days a week, 7:00 a.m. to 8:00 p.m.

If you have a duct cleaning quote in hand and want a second opinion on whether it addresses your actual problem, or you want your system evaluated before you commit, call (337) 789-6070 or schedule an appointment online. We will tell you what your system needs, including when the answer is that it does not need anything.