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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AfterTrusted Air Quality & Sanitizing for Denver Homeowners
Air Quality & Sanitizing pricing for Denver service typically addresses mold, bacteria, allergens, and persistent odors inside your HVAC system, with whole-home treatments running $450-$1,200 depending on scope and whether UV or filtration upgrades are included. At CleanRun Duct Repair & Cleaning, we’ve documented the inside of over 52,000 homes since 2013, and the photo records from Denver properties consistently show the same pattern: elevated mold spore counts in supply plenums after spring snowmelt, bacterial film on evaporator coils in homes with whole-house humidifiers, and UV lamp failures in systems where the original installer never explained the 9,000-hour bulb replacement cycle. We serve Denver homeowners with written prices delivered before any work starts, background-checked crews identified by name before arrival, and a 365-Day Done Right Promise backed in writing on every job. Call (720) 799-2292 for a free estimate.
What Our Air Quality & Sanitizing Service Includes
Mold Treatment
Mold treatment targets active fungal growth inside duct runs, the plenum (the main distribution box connected to your furnace), and on HVAC components where condensation creates sustained moisture. In Denver, we see this most often in homes near the South Platte River corridor, in basements with sump pumps, and in properties where the evaporator coil pan drains slowly during monsoon season. Our crews apply an EPA-registered antimicrobial through the duct system under negative-pressure extraction (a sealed vacuum process that prevents spore release into living spaces), then photograph every treated surface before and after. The photo record is delivered as part of your standard job documentation.
Bacteria Sanitizing
Bacteria sanitizing eliminates microbial colonies that standard duct cleaning dislodges but does not kill, particularly on fiberglass-lined duct board and porous insulation inside air handlers. Denver’s dry climate does not prevent bacterial growth; it concentrates it in the wet zones of your system, especially the coil and drain pan. We use professional-grade application equipment from Abatement Technologies to fog a hospital-grade sanitizer through the entire distribution network, with a dwell time documented in your written scope. The treatment is verified with ATP surface testing on request, a measurement of biological residue that gives you a number rather than an odor.
Odor Removal
Odor removal addresses persistent smells that originate inside the duct system rather than in the rooms themselves, the distinction being that masking agents fail while source treatment succeeds. We treat pet dander decomposition, smoke particulate lodged in porous duct liner, and the musty signature of mold metabolites, each with a different protocol. In Denver’s older neighborhoods like Berkeley and Sunnyside, we regularly find odors traced to previous owners’ habits trapped in decades-old flex duct, and we also provide our Air Quality & Sanitizing in Aurora for similar issues. Our process includes activated carbon filtration during the service visit and, for severe cases, replacement of contaminated duct sections with a written price for each option.
UV Light Installation
UV light installation places a germicidal lamp inside the air handler, typically downstream of the evaporator coil, where it irradiates passing air and irradiates wet surfaces that harbor mold and bacteria. The lamps we install are from Honeywell and Aprilaire, brands with published dosage specifications we can show you before you agree to the price. A critical detail most installers skip: UV-C output degrades to ineffective levels after roughly 9,000 hours of operation, about 12 months of continuous use. Our installation scope includes the replacement schedule in writing, and we stock the correct bulbs so you’re not hunting for a match in three years.
Air Purifier Install
Air purifier installation for whole-home systems means in-line units mounted in the return duct, not portable units that clean one room and require you to remember to run them. We size these to your system’s airflow, measured in CFM (cubic feet per minute), to avoid restricting the blower and causing premature motor failure. For Denver homes with forced-air heating, we typically recommend electronic media filters or photocatalytic oxidation units from Honeywell and Aprilaire, installed with a written pressure-drop test to confirm the system still operates within manufacturer specifications, and we also offer Englewood Air Quality & Sanitizing. The price includes the unit, mounting hardware, electrical connection, and the post-installation photo record.
Allergen Reduction
Allergen reduction combines mechanical filtration, source removal, and surface treatment to lower the load of pollen, dust mite debris, and pet dander circulating through your home. Denver’s Front Range location means high spring pollen counts from cottonwood, elm, and juniper that enter through fresh-air intakes and settle in ductwork. Our protocol includes HEPA-filtered negative-pressure extraction of the entire system, followed by application of a non-toxic anti-allergen treatment on porous surfaces. We document the before-and-after particle counts with a laser particle counter when the customer requests it, a service add-on with a written price agreed in advance.
What happens when you call
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A real person answersNo phone trees - you reach a local pro.
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You get an upfront price rangeHonest numbers before anyone is dispatched.
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A background-checked tech heads outLicensed & insured, dispatched right away.
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You approve before work beginsNothing starts until you say go.
Brands We Service for Air Quality & Sanitizing
We’ve installed and serviced hundreds of Honeywell UV and air purification systems across Denver metro, from the basic UV100E stick lamps to the F300 electronic air cleaner series. Our crews carry the OEM replacement bulbs and cells, and we pressure-test every installation to verify the unit is not restricting system airflow beyond manufacturer limits. We’ve also worked extensively with Aprilaire whole-home purifiers, including the Model 5000 electronic air cleaner and the newer line of in-duct photocatalytic units; we stock the replacement media and can show you the published MERV efficiency chart before you decide.
Whether you have Honeywell, Aprilaire, or any other make, we can help. Our diagnostic process identifies what equipment is installed, whether it is functional, and whether it is appropriate for your home’s square footage and duct configuration. We do not sell equipment that outperforms your system’s capacity, and we put the compatibility assessment in writing as part of your free estimate.
BeforeAfterSigns You Need Air Quality & Sanitizing Right Now
- Persistent musty or sour odors when the HVAC runs. If the smell intensifies when the blower starts and fades when it stops, the source is almost certainly inside the duct system or air handler, not in the rooms. This pattern indicates microbial growth on wet surfaces, and it will not resolve with standard duct cleaning alone.
- Visible mold around registers or on the return grille. Surface mold at supply registers often signals deeper colonization in the duct run behind the vent, especially in homes with fiberglass duct board. Wiping the register clean addresses the symptom; the colony continues to sporulate into your air.
- Increasing allergy symptoms that correlate with time spent at home. When family members feel worse indoors than outdoors during Denver’s low-pollen winter months, the HVAC system is likely recirculating accumulated allergen loads. Standard filters capture only a fraction of the particles that trigger symptoms.
- Recent water intrusion or plumbing leak near ductwork. Denver’s freeze-thaw cycle cracks foundation seals, and sump pump failures in finished basements are common. Any moisture event that contacted ductwork creates conditions for mold growth within 48 to 72 hours, even if the area appears dry afterward.
- A UV lamp that has not been replaced in over 12 months. UV-C germicidal lamps lose effective output long before they burn out visually. A lamp glowing blue is not a lamp killing microbes. If you cannot remember the last replacement, or if the original installer never specified a schedule, the lamp is likely decorative.
Our Air Quality & Sanitizing Process - Step by Step
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Written estimate with scope and price. We inspect your duct system, identify the equipment installed, and deliver a written price before any work begins. Haven Standard Clause 1 requires this; there is no “call for a quote” option because the quote is the starting point, not a negotiation.
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Photo documentation of current conditions. Our technician photographs the inside of every accessible duct run, the plenum, the evaporator coil, and any existing air quality equipment. These images establish the baseline and are included in your job record, delivered when the crew leaves.
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Source removal and mechanical cleaning. We clean the system with negative-pressure extraction using Rotobrush and Nikro equipment, dislodging debris and biofilm that would otherwise remain as a food source for microbes. This step is prerequisite to effective sanitizing; applying chemicals to dirty surfaces yields poor results.
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Targeted treatment application. Based on what the inspection found, we apply the appropriate antimicrobial, sanitizer, or install the specified UV or filtration equipment. The method matches the problem: fogging for duct-wide issues, direct application for localized mold, in-line installation for whole-home purification.
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Post-treatment verification and photo record. We photograph every treated surface and installed component, run the system to confirm normal operation, and deliver the complete documentation including the written scope, before-and-after images, and the 365-Day Done Right Promise. The crew is identified by name; the work is accountable.
How Much Does Air Quality & Sanitizing Cost in Denver?
A typical bacteria or mold sanitizing treatment for a single-family home in Denver runs $450-$780 for the duct system, with whole-home UV light installation adding $680-$1,150 depending on whether one or two lamps are required for your air handler configuration. Air purifier installation ranges from $890-$1,850 for in-line electronic media or photocatalytic units, including the pressure-drop verification test. Odor removal for smoke or pet-related issues starts around $520 and can reach $1,200 if contaminated duct sections require replacement rather than treatment.
Several factors move the price within these ranges. System size matters: a 3-ton single-stage unit in a 1,600-square-foot ranch in Englewood requires less material and labor than a 5-ton zoned system in a Highlands Ranch two-story. Accessibility affects time: crawl space ductwork in older Denver neighborhoods like Whittier or Cole takes longer to photograph and treat than basement utilities in newer construction. The severity of contamination determines whether one application suffices or whether we recommend a follow-up verification visit, always with a separate written price.
To avoid overpaying, reject any quote that lacks line-item detail or that quotes a per-vent price, a structure that incentivizes upselling. CleanRun’s written scope specifies exactly what surfaces will be treated, what equipment will be installed, and what documentation you will receive. The estimate is free, and we offer a Free Second Opinion on any competitor’s written quote under Haven Standard Clause 5.
Air Quality & Sanitizing Near Denver - Our Service Area
We serve Denver and the surrounding metro area including Greenwood Village, Thornton, Aurora, Centennial, Arvada, Westminster, Lakewood, Littleton, Brighton, and Highlands Ranch. Most scheduled appointments are available within three to five business days, with emergency mold treatments prioritized for active water damage situations. Our crews are dispatched from a central Denver location, and we do not charge travel fees within the metro service area. Every visit includes the same documented photo record and written price guarantee, whether the job is in the city center or the outer ring.
Serving Denver, CO - Our Local Coverage Area
We’re based in the Denver area and know this community well, offering our Air Quality & Sanitizing in Denver. Use the map below to see our service coverage - if you’re nearby, we can almost certainly help.
Frequently Asked Questions - Air Quality & Sanitizing in Denver
Air quality and sanitizing kills or neutralizes biological contaminants inside your HVAC system, while standard duct cleaning removes loose debris and dust. Duct cleaning dislodges the food source for mold and bacteria; sanitizing eliminates the organisms themselves. We perform both in sequence, with the cleaning first and the treatment second, and we photograph every stage so you can see the difference between a clean surface and a sanitized one.
A typical residential treatment takes three to five hours, including the initial inspection, photo documentation, mechanical cleaning, application or installation, and final verification. UV light and air purifier installations at the longer end of that range, simple bacteria fogging at the shorter end. We give you a time estimate in writing with your price, and we do not leave until the photo record is complete and the system is running normally. Call (720) 799-2292 to schedule - estimates are free.
Whole-system sanitizing in Denver typically runs $450-$780, UV installation $680-$1,150, and in-line air purifier installation $890-$1,850, with the final price depending on system size, accessibility, and contamination severity. Every estimate is itemized in writing before work begins, with no per-vent pricing or post-arrival add-ons. Bring us a competitor’s written quote and we’ll provide a Free Second Opinion under Haven Standard Clause 5.
Yes. We install, maintain, and repair Honeywell UV lamps and electronic air cleaners, and Aprilaire whole-home purifiers and filtration systems. We stock replacement bulbs, media cells, and OEM components for both brands, and we verify every installation with a pressure-drop test to confirm your system maintains designed airflow. If you have another brand, we assess compatibility and give you a written scope for any work needed.
We prioritize active water damage and visible mold situations that present immediate health concerns, with same-day or next-day response when possible. We do not use artificial urgency tactics; if the situation is stable and scheduled service meets your needs, we will tell you so. All calls are answered by a live person who can assess your situation and give you a realistic timeline. Call (720) 799-2292 to discuss your circumstances.
Every job is backed by our 365-Day Done Right Promise: if the work is not right, we make it right, documented in writing on every invoice. This is not a manager-discretion policy; it is Haven Standard Clause 6, applied automatically. For UV lamp installations, we also include the manufacturer’s warranty and our written replacement schedule so you know when effective output declines.
Clear a three-foot workspace around your furnace and return grille, secure pets in a separate room, and ensure we have access to your electrical panel if UV or purifier installation is planned. You do not need to cover furniture or leave the house; our negative-pressure extraction contains the work area. We will call you by name before arrival, identify our technician, and review the written scope with you before starting. Call (720) 799-2292 to book your appointment.
Schedule Your Air Quality & Sanitizing Service in Denver Today
Call (720) 799-2292 to speak with a live person, schedule your free estimate, and receive a written price before any work begins. Every job includes a Documented Photo Record of every duct run, background-checked crews identified by name, and the 365-Day Done Right Promise backed in writing. We’re independently owned and operated under the Haven Standard, established in 2013, and we’ve served over 52,000 homes with the same protocol: show the customer what we found, agree on a price in writing, then deliver documented results.
Written by Tomas Reyes, Owner at CleanRun Duct Repair & Cleaning, serving Denver since 2013.