Whole-system duct and dryer vent check with before-and-after photos - you see exactly what came out of your vents
That "$99 whole-house special" is a bait ad - the real number appears once they are in your hallway, or the "clean" is a shop-vac at the register. We photograph the inside of your ducts before and after instead.
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Before
AfterResidential Duct Cleaning in Herndon, VA
Air Duct Cleaning in Herndon typically runs between $299 and $649 for a single-family home, takes three to five hours, and ends with a written photo record showing the inside of every duct run before and after the work. CleanRun Duct Repair & Cleaning has documented that process on every job since 2013 – no exceptions, no shop-vac theater, no price revealed after the panel comes off the wall.
This page covers the residential side of our Air Duct Cleaning in Herndon work specifically: the forced-air supply and return duct system inside your home – the sheet-metal and flex-duct network that carries conditioned air from your HVAC unit to every room. That system accumulates dust, dander, mold spores, and construction debris over years of use, and most Herndon homeowners have no idea what’s inside it until a camera goes in. If you’d rather talk through your situation before reading further, call us at (571) 520-6317 – a live person picks up, every time.
Herndon sits in a part of Northern Virginia where clay-heavy soil, humid mid-Atlantic summers, and a large stock of homes built between 1985 and 2005 create a specific set of duct problems. Flex duct that sags at the joints, plenums that collected drywall dust during a renovation, and Return Duct Cleaning candidates we see in the Elden Street corridor and the older sections of Hunters Mill Road regularly. What we find gets photographed. What the photo shows drives the scope. That order never reverses.
Tomas Reyes leads every job under the H.A.V.E.N. Standard – a documented operating protocol that governs pricing, crew conduct, equipment, and the written guarantee attached to every visit. The full guarantee is the 365-Day Done Right Promise: if the work isn’t right, we make it right, in writing, no manager-approval required.
When You Need Residential Duct Cleaning
There’s no universal rule that says every home needs duct cleaning every three years – that claim exists to sell visits, not solve problems. The situations below are the ones where camera evidence in Herndon homes has consistently shown a meaningful debris load or a condition that degrades air quality.
- Visible dust discharge at supply registers. If you see a grey fan of dust on the ceiling around a register within a day or two of vacuuming, the duct run feeding that register has accumulated enough particulate to re-aerosolize with every blower cycle. In Herndon homes with original 1990s ductwork, we frequently photograph 2-to-4 inches of compacted debris at the first elbow from the plenum.
- Recent renovation or construction work. Drywall cutting, sanding, and demo work saturate ductwork with fine silica dust that a standard filter cannot capture once it’s inside the system. Homes in the McNair Farms and Worldgate areas that went through kitchen or basement builds in the last five years often show white powder coating on every interior duct surface.
- Allergy or respiratory symptoms that worsen indoors. Herndon’s pollen season runs from mid-March through October. If symptoms are reliably worse inside than outside, and your HVAC runs frequently, the duct system is a reasonable place to look – not the only place, but a documentable one.
- A musty smell that returns after the system runs. Musty odor that disappears when the HVAC is off and returns within minutes of a blower cycle usually points to microbial growth on duct surfaces or inside the air handler cabinet – both conditions a camera can confirm before any cleaning scope is written.
- Home purchase with no cleaning records. Many Herndon resales, especially those built before 2000, have no documentation of duct service in the disclosure package. A pre-cleaning camera inspection tells you what you’re actually living with, documented in writing, before you decide whether cleaning makes sense.
- Pest or rodent activity near ductwork. Flex duct in crawl spaces and attics is accessible to rodents. If a home has had any pest activity, the interior of those runs needs to be inspected – we have photographed nesting material, droppings, and torn insulation lining inside duct runs in Herndon homes more than once. That’s a sanitation issue, not just a dust issue.
Our Residential Duct Cleaning Process
Every step below happens on every job. Nothing is skipped based on the size of the house or the price of the visit. The sequence is deliberate: document first, then work, then document again.
- Written price before any panel comes off. Haven Standard Clause 1 means the written scope and dollar figure are in your hand before we touch anything. The price is based on the number of supply registers, return registers, and duct runs in your home – counted during a quick pre-job walkthrough, not estimated from square footage over the phone. There is no “starting at” pricing at CleanRun; the number on the page is the number on the invoice.
- Pre-cleaning camera documentation. A flexible borescope camera goes into each duct run before any equipment is connected. The footage is saved as part of your job record. What the camera shows – debris depth at the elbow, surface condition of the duct liner, any moisture staining – determines the actual cleaning method used. In older Herndon homes with fiberglass-lined rectangular ducts, this step often reveals delaminating liner that affects how aggressively we can brush without creating a secondary debris problem.
- Negative-pressure extraction setup. Negative-pressure extraction means we connect a high-velocity collection unit – typically our Nikro equipment – to the main trunk line and create a controlled vacuum inside the duct system before any agitation begins. This is the step that separates professional duct cleaning from a shop-vac and a leaf blower: debris dislodged during brushing is immediately drawn toward the collection unit rather than redistributed through the system. We seal off registers as we work each run to maintain that pressure differential.
- Mechanical agitation with Rotobrush equipment. A Rotobrush is a rotating brush system on a flexible drive cable – it reaches into the duct run and mechanically breaks loose debris that has bonded to duct surfaces over years. The brush diameter is matched to the duct size. For flex duct, we use softer agitation tools that clean without collapsing the inner liner. For sheet-metal runs, the brush can contact the full surface area. The Rotobrush system runs simultaneously with the negative-pressure extraction unit so debris doesn’t fall back into the system.
- Air handler and plenum cleaning. The plenum is the central distribution box that connects your HVAC air handler to the duct runs. It accumulates more debris than almost any other component in the system because every cubic foot of air that moves through your home passes through it. We clean the plenum interior, the evaporator coil access area, and the blower compartment as part of every residential job – not as an add-on.
- Post-cleaning camera documentation and photo record delivery. The same camera goes back into each run after cleaning. The before-and-after images are compiled into your job record and delivered to you before the truck leaves. You can see the difference between a brushed, extracted duct run and the baseline state we found – not because we’re asking you to trust us, but because the photo record removes the need to. This practice has been standard on every CleanRun job since 2013.
BeforeAfterResidential Duct Cleaning Pricing in Herndon
Residential duct cleaning in Herndon runs between $299 and $649 for most single-family homes. Townhomes and smaller units – common in the Herndon Town Center and Worldgate neighborhoods – typically fall in the lower portion of that range. Larger homes in the Folkstone or McNair Farms areas with multiple HVAC zones and more duct runs land toward the upper end. Every price is written before work begins, under Haven Standard Clause 1. “Call for a quote” is not something CleanRun does.
| Home Type / Condition | Typical Price Range |
|---|---|
| Townhome or condo, single HVAC zone, up to 10 registers | $299 – $399 |
| Single-family home, single zone, 10-18 registers | $379 – $499 |
| Single-family home, dual zone or heavily soiled system | $499 – $649 |
| Post-renovation cleaning (high debris load) | Add $75 – $150 to base range |
| Sanitizing treatment (antimicrobial application to duct surfaces) | Add $89 – $149 |
What moves a job toward the higher end of any range: number of duct runs and returns, distance from the trunk line to the farthest register, whether the system has fiberglass-lined ducts that require gentler agitation, and how long the system has gone between documented cleanings. None of these are discovered during the job – the pre-job walkthrough establishes all of them before any number is written down.
If you have a written estimate from another company, bring it. CleanRun offers a Free Second Opinion on any written estimate – we’ll put our number next to theirs, in writing, so you can compare scope and price side by side. Call (571) 520-6317 to schedule that or to get your own written estimate.
What the 365-Day Done Right Promise Actually Covers
The 365-Day Done Right Promise is not a satisfaction guarantee in the hospitality sense. It means that if a duct run we cleaned is found to be dirty again within 365 days due to our process – not due to a new event like construction or pest intrusion – we clean it again at no charge. The terms are in writing on your job record. There is no approval process, no escalation to management, and no requirement to argue about it. The before-and-after photo record makes the standard of comparison objective. That’s the point of having it.
This guarantee has been attached to every job CleanRun has completed since 2013, across more than 52,000 homes served. Tomas Reyes made it a written commitment rather than a marketing phrase because a commitment without documentation isn’t a commitment.
Equipment and Crew Standards
The equipment on the truck is trade-recognized and independently verifiable. Rotobrush agitation systems, Nikro high-velocity extraction units, and Abatement Technologies air-scrubbing equipment are used depending on the job requirements. Customers can look up each of these brands independently before agreeing to a price – that’s intentional. CleanRun does not use residential shop vacuums or consumer-grade tools on professional jobs.
Every technician is background-checked and identified by name before arrival, under Haven Standard Clause 3: Verified Crews. They arrive in uniform, with ID. If a technician shows up unannounced or unidentified, that’s outside the H.A.V.E.N. Standard and you should call the office immediately at (571) 520-6317.
You can find the full overview of how these standards apply across all our work on the CleanRun home page.
Herndon-Specific Notes on Residential Ductwork
Herndon’s housing stock has some specific characteristics worth knowing before you schedule anything.
Homes built in the late 1980s and early 1990s in subdivisions like Folkstone, Bryson, and areas near Dranesville Road frequently have original fiberglass-duct-board plenums – a pressed fiberglass construction that can delaminate when agitated too aggressively. Our Video Inspection identifies this material before any brush touches it, and the cleaning method is adjusted accordingly. A company that doesn’t camera-inspect first and uses the same brush settings on every job will damage this material without knowing it.
Herndon’s proximity to Dulles Airport and the surrounding commercial corridors means that many homes have had additions or renovations at some point in the last 20 years – garage conversions, basement builds, attic finishes. Every one of those projects generates particulate that enters the duct system during construction. If your home had any work done and you don’t have a post-construction duct cleaning record, that debris is still in the system.
Humid summers in this part of Fairfax County also mean that flex duct in poorly ventilated crawl spaces can develop condensation on the exterior, which occasionally wicks to the interior liner. We document moisture staining when we find it – it’s a separate issue from dust and requires a different response than a cleaning alone can provide.
FAQs – Residential Duct Cleaning in Herndon
How much does residential duct cleaning cost in Herndon, VA?
Residential duct cleaning in Herndon runs $299 to $649 for most homes, depending on the number of duct runs, the number of HVAC zones, and the condition of the system. Townhomes and smaller units typically fall between $299 and $399. Larger single-family homes or heavily soiled systems land between $499 and $649. Post-renovation cleaning adds $75 to $150 to the base range due to higher debris load. Every price at CleanRun is written before work starts – call (571) 520-6317 and a live person will walk through your home’s specifics and give you a written number.
How long does residential duct cleaning take?
Most residential duct cleaning jobs in Herndon take three to five hours from setup to final photo documentation. Larger homes with two HVAC zones or systems that haven’t been serviced in many years can run closer to six hours. The pre-cleaning inspection and Supply Duct Cleaning work are included in that time – they’re not add-ons that extend the day, they’re built into the standard job sequence.
Is residential duct cleaning worth it for a Herndon home?
It depends on what the camera finds. A home with no visible dust discharge, no recent renovation, no pest history, and a system serviced within the last five to seven years may show minimal debris – and we’ll tell you that in writing. A home with any of those factors present, or with original ductwork from the late 1980s and no cleaning record, typically shows a debris load that a camera makes hard to argue with. CleanRun’s pre-cleaning inspection documents what’s actually inside the system before a cleaning scope is written, so the decision is based on evidence rather than a general recommendation. Call (571) 520-6317 to schedule an inspection – the written price comes before any work begins.
How often should residential ducts be cleaned in Herndon?
Most Herndon homes with no unusual events – no renovation, no pest activity, no documented moisture issues – benefit from cleaning every five to seven years. Homes with pets that shed, residents with respiratory conditions, or recent construction work may warrant a shorter interval. The right answer for your home is a camera inspection, not a calendar rule. If you have a photo record from a prior cleaning, that’s the baseline – the next inspection compares against it.
If any of the situations above match your home, or if you simply want to know what’s inside your duct system before making any decision, call CleanRun at (571) 520-6317. A live person answers every call. Tomas Reyes and the CleanRun team will give you a written price before any work starts and a documented photo record of every duct run when the job is done. That’s the standard on every job, for every home, in Herndon.
Written by Tomas Reyes, Owner at CleanRun Air Duct Cleaning Herndon, serving Herndon.