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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AfterHow Much Does Air Quality & Sanitizing Cost in Littleton?
Our Air Quality & Sanitizing services in Littleton, CO typically run between $180 and $650 for a standard single-family home, depending on which treatments are included and the square footage of the system being treated. Most Littleton homeowners who schedule a UV light installation plus a full duct sanitizing treatment land somewhere between $280 and $420 for the combined scope. Written prices are delivered before any work starts – that is the CleanRun standard on every job, no exceptions.
Air Quality & Sanitizing Cost Breakdown (2026)
Littleton’s housing stock creates a specific mix of conditions that affects sanitizing scope and price. Homes in Ken Caryl, Columbine Valley, and Governors Ranch tend to be large ranch-style or two-story builds from the 1980s and 1990s with duct systems that haven’t been accessed in years. Homes in Roxborough Park and Sterling Ranch skew newer but often sit at higher elevation with more particulate load from surrounding open space. Neither condition is a problem – they just influence which line items belong on your quote.
The table below reflects actual pricing ranges CleanRun uses in the Littleton market in 2026. Every number here is a real starting point, not a teaser rate that doubles at the door.
| Service | Typical Range (Littleton, 2026) | Notes |
|---|---|---|
| Duct sanitizing – single-story home (up to 2,000 sq ft) | $180 – $260 | Applied via fogger through plenum and supply runs after cleaning |
| Duct sanitizing – two-story or larger home (2,001 – 3,500 sq ft) | $240 – $380 | Larger system volume and more duct runs increase treatment time |
| UV germicidal light installation (single lamp) | $220 – $390 | Installed at the air handler; Honeywell and Aprilaire units used |
| UV germicidal light installation (dual lamp – coil + air) | $380 – $580 | Covers both coil surface and moving air; more complete coverage |
| HEPA filtration upgrade / media filter installation | $110 – $240 | Aprilaire media filters; price includes hardware and installation |
| Mold assessment (visual + photo documentation) | $95 – $150 | Camera-documented before any treatment recommendation is made |
| Antimicrobial treatment (localized – one zone) | $120 – $190 | Used when camera confirms growth in a specific duct section |
| Whole-system air quality package (cleaning + sanitizing + UV) | $520 – $850 | All three scopes combined; photo record included on every visit |
A few things are worth knowing about how these numbers work in practice. Sanitizing a duct system that hasn’t been cleaned first is like painting a wall without washing it – the product makes contact with the debris layer, not the duct surface. That’s why CleanRun almost always recommends cleaning before sanitizing, and why the whole-system package reflects the most accurate real-world cost for a home that needs both. If you already had cleaning done recently and have documentation to show it, the sanitizing-only price applies.
UV germicidal lights are quoted based on your specific air handler configuration. Some Littleton homes – particularly those with Carrier and Lennox systems common in Highlands Ranch adjacent neighborhoods – use a narrower air handler cabinet that requires a specific lamp profile. The technician photographs the air handler cavity during assessment so you can see exactly what fits and why before anything is ordered.
Antimicrobial treatment pricing is area-specific by design. We don’t quote a whole-system antimicrobial treatment until a camera has confirmed where growth is actually present. Quoting a whole-system treatment based on a description over the phone is how the $79-coupon industry operates – CleanRun doesn’t do it.
What Affects Air Quality & Sanitizing Pricing in Littleton
- System size and duct run count: Littleton homes in Columbine Valley and Ken Caryl regularly have 18 to 26 individual duct runs – significantly more than a similarly sized home in a denser urban neighborhood. More runs mean more surface area to treat and more application time, which moves the price upward on the sanitizing line item.
- Elevation and particulate load: Homes near the Hogback ridgeline in Roxborough or along C-470 carry a measurably higher dust and particulate load than homes in lower-elevation, more sheltered neighborhoods. Higher particulate load means heavier debris accumulation inside the system, which can affect both the cleaning scope required before sanitizing and the concentration of antimicrobial product used.
- Age and condition of the duct system: Homes built before 1995 in Littleton often have older flex duct or metal duct that has never been treated. If the camera shows significant debris buildup, biological growth at the first elbow, or a compromised liner, the scope expands. The photo record documents exactly what was found so the quote makes sense before you agree to it.
- Whether cleaning has already been completed: Sanitizing applied to a clean system costs less and works better than sanitizing applied over years of accumulated dust. If you’ve had professional cleaning within the past three years and have a documented record of it, you may qualify for sanitizing-only pricing rather than a combined package.
- UV lamp configuration: Single-lamp versus dual-lamp installation is a real price difference – roughly $150 to $200 – and it isn’t a upsell for its own sake. Dual-lamp systems treat both the coil surface (where biological growth tends to concentrate) and the airstream moving past it. Whether dual-lamp makes sense depends on the air handler layout and what the assessment finds at the coil.
- Add-on filter upgrades: Some Littleton homeowners request a media filter upgrade at the same time as a sanitizing treatment, which is logical sequencing since both affect air quality at the system level. Aprilaire media filter installations are priced separately and added to the written quote before any work begins – they are never rolled in without explicit sign-off.
BeforeAfterHow to Save on Air Quality & Sanitizing
The most direct way to keep costs down is to be clear about what your system actually needs before agreeing to any scope. That sounds obvious, but it’s where a lot of homeowners spend more than necessary – a technician who recommends a full antimicrobial treatment without running a camera first is recommending something they haven’t verified is needed. At CleanRun, the assessment comes before the recommendation, and the photo record is the evidence that ties the two together.
Bundle cleaning and sanitizing in the same visit
If your system needs both cleaning and sanitizing – which it usually does if neither has been done in the past three or four years – scheduling both in a single visit is almost always less expensive than two separate appointments. Mobilization time is the same either way, and the equipment is already set up. A combined visit in Littleton typically saves $60 to $120 compared to two separate jobs.
Get a second opinion on any written quote you already have
CleanRun offers a free second opinion on any competitor’s written estimate – Haven Standard Clause 1 means we put our own number in writing right next to theirs. If you’ve already received a quote from another company in the Littleton area, call (720) 315-7291 and we’ll give you a written comparison at no cost. You keep both documents and make your own decision.
Don’t skip cleaning to save on sanitizing
It seems counterintuitive as a cost-saving tip, but sanitizing a dirty system wastes the product – the antimicrobial agent makes contact with the debris layer rather than the duct wall. Skipping cleaning to reduce the line item on the invoice frequently means the sanitizing treatment has minimal effect, and the job needs to be repeated sooner. The better value is the combined scope done once, done with documentation, and backed by the 365-Day Done Right Promise.
Ask specifically about UV lamp warranty terms
Honeywell and Aprilaire UV lamps have a manufacturer-specified lamp life – typically 9,000 to 17,500 hours depending on the model – and replacement is a real ongoing cost. Understanding that upfront helps you make a better decision about single versus dual lamp configuration, and about whether a UV system makes sense for your situation compared to a media filter upgrade that has lower ongoing costs. CleanRun technicians explain this before the quote is written, not after the lamp is already in the ceiling.
Schedule during fall or early spring
Demand for air quality and sanitizing services in Littleton peaks during late spring (allergy season) and mid-winter (closed-house season). Scheduling in September, October, or early March typically means faster availability and, in some cases, more flexibility on scheduling logistics. Pricing doesn’t change by season at CleanRun – Haven Standard Clause 1 governs every job – but turnaround time is often faster in shoulder months.
For a written estimate specific to your home’s system and square footage, call (720) 315-7291. The estimate is free, the price is in writing before anything starts, and there is no obligation.
FAQs – Air Quality & Sanitizing Cost in Littleton
How much does duct sanitizing cost in Littleton, CO?
Duct sanitizing in Littleton runs $180 to $380 for most single-family homes, depending on system size. A home under 2,000 square feet is typically at the lower end of that range; larger two-story homes in Ken Caryl or Columbine Valley with 20-plus duct runs sit closer to $300 to $380. That price covers application of an EPA-registered antimicrobial agent through the plenum and supply runs after cleaning, plus a photo record of the before and after condition of the system. Call (720) 315-7291 for a written quote specific to your home’s configuration.
Is UV light installation worth the cost for Littleton homes?
A single UV germicidal lamp installed at the air handler costs $220 to $390 in the Littleton market; a dual-lamp system runs $380 to $580. Whether it’s worth it depends on what the camera finds at your coil. Homes with recurring musty odors after cleaning, or camera-confirmed biological growth at the coil surface, typically see a meaningful improvement with UV. Homes where the primary issue is dust and particulate – more common in Roxborough Park and along the C-470 corridor – often get more practical benefit from a media filter upgrade at $110 to $240. CleanRun technicians document what the camera finds before recommending either, so you’re not choosing between options based on a description. Call (720) 315-7291 to schedule an assessment.
What’s included in a whole-home air quality package?
CleanRun’s whole-system air quality package – priced at $520 to $850 in Littleton – covers professional duct cleaning (negative-pressure extraction using Rotobrush and Nikro equipment), EPA-registered duct sanitizing treatment applied through the plenum and all supply runs, and a UV germicidal lamp installation at the air handler. Every visit includes a documented photo record of each duct run before and after, delivered as a standard part of the job. The whole-system package is the right scope for a home that hasn’t had either service done in more than four years, or where the camera shows both debris accumulation and biological growth present. Call (720) 315-7291 for a written quote.
Can I just get sanitizing without cleaning first?
Technically yes, but the practical result is often disappointing. Sanitizing a duct system that carries significant debris load means the antimicrobial product contacts the debris layer rather than the duct wall surface, reducing its effectiveness and shortening the interval before retreatment is needed. If you have documented evidence that your system was professionally cleaned within the past two to three years, sanitizing-only pricing – $180 to $260 for a home under 2,000 square feet – makes sense and the treatment will actually work as intended. CleanRun will ask for that documentation before quoting sanitizing-only, because recommending a treatment that won’t perform at full effectiveness isn’t something we put in writing. Call (720) 315-7291 if you have existing cleaning records and want a sanitizing-only quote.
Does CleanRun offer a guarantee on sanitizing work in Littleton?
Yes. Every air quality and sanitizing job in Littleton is backed by the 365-Day Done Right Promise – if the work isn’t right, CleanRun makes it right, and that commitment is in writing on every job, not subject to manager approval after the fact. The photo record delivered at the end of every visit is part of that accountability: you have documented before-and-after evidence of what was found and what was done. If you’re comparing quotes from other Littleton companies, ask each one to put their guarantee in writing and describe exactly what triggers it. That’s a reasonable question, and the answer tells you a lot about how serious the guarantee actually is.
What CleanRun Actually Does on an Air Quality Visit in Littleton
Because air quality and sanitizing is a category where a lot of companies say a lot of things without backing any of it up with documentation, it’s useful to describe exactly what happens on a CleanRun visit – not in abstract terms, but in the sequence a technician actually follows.
The job starts with a camera inspection of the supply and return runs. A Rotobrush or Nikro inspection camera goes into each run before anything else happens, and still photographs are taken at the plenum connection, first elbow, and mid-run. In older Littleton homes – particularly the ranch-style builds common in Governors Ranch and Columbine Hills built between 1978 and 1992 – we regularly find a 2- to 4-inch debris layer at the first elbow downstream of the supply register, plus surface discoloration at the plenum that the camera picks up before any other indicator is obvious. Those photos go into your job record.
After the inspection, the written price is presented and explained. Haven Standard Clause 1: no work starts without a written price and your explicit approval. If the assessment reveals something that changes the scope from what was originally discussed, that change goes into writing too – it doesn’t get absorbed into a vague “additional charges may apply” line item.
Cleaning comes before sanitizing, always. Negative-pressure extraction – using the Nikro unit to create a controlled vacuum at the air handler while the Rotobrush mechanically agitates debris from each run – removes the material that would otherwise block the sanitizing treatment from reaching the duct surface. After extraction, the system is photographed again.
Sanitizing is applied as a fine fog through the plenum and each supply run using an EPA-registered product. The air handler is run during application to carry the treatment through the full system. If a UV lamp installation is part of the scope, that happens after sanitizing, at the air handler cabinet, with the lamp position and installation photographed before the panel is replaced.
Every photo – inspection, post-cleaning, post-sanitizing, UV installation – goes into your documented photo record, delivered as a standard deliverable. Not as an add-on. Not as an upgrade. As a standard part of every job CleanRun has done since 2013.
Air Quality & Sanitizing in Context: What Littleton Homeowners Actually Ask Us
After more than a decade serving the home services market across the Denver metro, a handful of questions come up specifically from Littleton homeowners that don’t appear as often in other parts of the service area.
The most common one is whether UV treatment is necessary for homes near open space – specifically in Roxborough and the areas south of Ken Caryl where the Colorado foothills start in earnest. The honest answer is that UV germicidal lights target biological growth (mold spores, bacteria, viruses in the airstream) rather than particulate dust. Homes near open space typically have a higher dust and pollen load, which a UV lamp doesn’t address; a media filter upgrade or higher-MERV filtration is usually the more effective choice for that specific problem. UV makes more sense when the camera finds biological growth at the coil or evidence of moisture in the duct system – more common in older homes with less insulation on the ductwork in unconditioned spaces like crawlspaces or unfinished basements.
The second question that comes up often in Littleton is about HOA requirements. Some HOAs in planned communities – Sterling Ranch is a recent example – have started asking for documentation of HVAC maintenance as part of home sale disclosures or rental compliance packets. The CleanRun documented photo record, written scope, and written warranty satisfy this requirement directly. A before-and-after photo record from a professional visit is more specific documentation than most HOAs ask for.
The third question is about timing relative to a home purchase. Littleton’s housing market has been active enough in the past several years that many homeowners have bought homes without knowing when the ductwork was last cleaned or treated. If you’ve moved into a home in Littleton and don’t have records from the previous owner, the camera inspection is the right starting point – it documents what’s actually present in the system so the treatment recommendation matches the condition, not an assumption.
How CleanRun Pricing Compares to the Littleton Market
There are two pricing models common in the Littleton air quality and duct service market. The first is the coupon model – a $79 or $89 “whole-house special” advertised broadly, with pricing that escalates substantially once the technician is inside the home and has identified additional line items. The second is the documented-scope model, where the price is written before work starts and doesn’t change based on what’s convenient for the technician once they’re already on-site.
CleanRun operates on the second model. The price ranges on this page are real numbers for real scopes, and they reflect what a Littleton homeowner should expect to pay for documented professional work – not the entry-point teaser that gets a truck to the driveway.
The documented photo record is part of this. If a competitor quotes a lower number for a sanitizing treatment, the relevant question is what evidence they provide that the treatment was applied as described. A written scope, pre-treatment photos, and post-treatment photos are the documentation that turns a service call into a verifiable record. That record matters if you’re ever in a position of explaining your home’s maintenance history to a buyer, an HOA, or an insurance adjuster.
For a direct comparison, CleanRun’s free second opinion offer – Haven Standard Clause 1 extended to competitor quotes – means you can get a written CleanRun price alongside any other written estimate you have. Call (720) 315-7291 and bring the competitor’s written quote. Both numbers go on paper, and you decide.
Key Takeaways
- Air quality and sanitizing in Littleton typically costs $180 to $650 depending on scope, with most whole-system packages landing between $280 and $420.
- Sanitizing alone (assuming prior cleaning) runs $180 to $380 based on home size and duct run count.
- UV germicidal light installation adds $220 to $580 depending on single or dual lamp configuration.
- Homes in Ken Caryl, Columbine Valley, and Governors Ranch often have 20-plus duct runs, which pushes sanitizing scope toward the higher end of the range.
- Sanitizing without prior cleaning is almost always less effective – the photo record shows why.
- Every job includes a written price before work starts, a documented photo record at completion, and the 365-Day Done Right Promise in writing.
- CleanRun offers a free second opinion on any written competitor estimate – call (720) 315-7291.
For a full overview of what the service covers and how it’s structured, see Air Quality & Sanitizing in Littleton.
Get a Written Estimate for Your Littleton Home
If you’re trying to understand what air quality and sanitizing will actually cost for your specific home – not a range pulled from a national average, but a written number based on your system size, condition, and what the camera finds – call (720) 315-7291. All calls are answered by a live person. The estimate is free. The price goes in writing before any work begins, and the photo record comes standard when the job is done. That’s the CleanRun standard, applied to every home we’ve served in Littleton since 2013.
Tomas Reyes and the CleanRun team serve Littleton and surrounding communities with the same written-price, documented-result process on every visit – no exceptions, no coupon bait-and-switch, no work that can’t be verified by the photos we leave behind.
Written by Tomas Reyes, Owner at CleanRun Air Duct Cleaning Littleton, serving Littleton, CO since 2013.
Pricing reflects the Littleton market as of 2026. CleanRun Air Duct Cleaning Littleton offers free estimates – call (720) 315-7291.
What Our Customers Say
"Thorough job on the ducts and the dryer vent. Left the house clean and the paperwork was clear."
- Rafael I."The before and after photographs of each run are the reason I used them. You cannot argue with what came out of the return."
- Marguerite O."The dryer vent was almost completely blocked with lint. They showed me the photograph and I understood immediately why the dryer had been running twice."
- Lucia M.