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
AfterTrusted HVAC Cleaning for Littleton Homeowners
HVAC cleaning in Littleton typically costs $280-$680 for a complete system service, and every CleanRun job starts with a written price delivered before any work begins. We’re CleanRun Duct Repair & Cleaning, independently owned and operated under the Haven Standard since 2013, and we’ve documented the inside of every duct run and HVAC component we’ve touched across more than 52,000 homes. Our phone is answered by a live person at (720) 315-7291, and we serve Littleton homeowners from Historic Downtown to Ken Caryl Ranch, from Columbine Valley to Roxborough Park.
Littleton’s semi-arid climate and position against the Front Range creates a specific problem: fine particulate from seasonal wildfire smoke, cottonwood seed in late spring, and alkaline dust from the high plains all collect on evaporator coils and blower assemblies where standard filter changes can’t reach. The result is reduced airflow, longer run times, and component wear that shows up on utility bills before it shows up as a breakdown. Our crews use Rotobrush and Nikro equipment with negative-pressure extraction (a sealed suction method that contains dislodged debris rather than redistributing it) to clean what filters miss, and every step is photographed before and after for your job record.
Tomas Reyes, who leads CleanRun, established the company’s documentation standard on the first job in 2013: written price first, photo record last, no exceptions. That standard became the H.A.V.E.N. Standard, and it governs how we work in Littleton today.
What Our HVAC Cleaning Service Includes
Evaporator Coil Cleaning
The evaporator coil is the A-shaped aluminum assembly inside your air handler or furnace where refrigerant absorbs heat from passing air. In Littleton, we regularly find these coils clogged with a felt-like mat of cottonwood seed and construction dust, especially in homes built between 2015 and 2020 in neighborhoods like Sterling Ranch and Terrain. When airflow across the coil drops, the system runs longer to hit thermostat setpoints, and the compressor works harder. We access the coil through the plenum (the sheet-metal distribution box above your furnace), apply foaming cleaner rated for the specific alloy, then rinse with controlled water volume captured by our Nikro negative-pressure collection system. The camera shows the difference: fin spacing restored to manufacturer specification, with photos archived to your job record.
Blower Cleaning
The blower is the squirrel-cage fan that pushes conditioned air through your ductwork, and its curved blades are precision-balanced at the factory. Dust accumulation on those blades throws that balance off, creating vibration that wears bearings and makes the motor draw more amperage. In Englewood HVAC Cleaning and Littleton’s older homes near Bemis Park and the original Arapahoe County courthouse district, we see blowers that haven’t been removed for cleaning in fifteen or more years. Our process: disconnect power, extract the blower assembly, clean each blade and the housing with compressed air and contact-safe solvent, then test run current draw against the nameplate rating. Haven Standard Clause 1 requires the written price before we start; the blower cleaning scope is itemized separately so you see what you’re paying for.
Condenser Cleaning
The condenser sits outside, and its finned coils release heat gathered from inside your home. Cottonwood fluff, grass clippings from adjacent lawns, and the fine grit that blows off the Chatfield Reservoir trails all pack into those fins. We’ve pulled condenser covers in Littleton’s Ken Caryl Valley and HVAC Cleaning in Parker homes, finding airflow reduced by forty percent or more. We disconnect power, remove the fan assembly for access, then use foaming cleaner and low-pressure water (high pressure bends the aluminum fins permanently) to restore free airflow. The photo record includes a fin-density count: visible light through the coil before and after. For homes near the High Line Canal where cottonwood density is highest, we note this in your file for future scheduling.
Air Handler Cleaning
The air handler is the complete indoor unit: cabinet, coil, blower, drain pan, and secondary components. A full air handler cleaning in Littleton addresses what happens when the primary drain line clogs with algae (common in summer when condensate volume peaks) and water overflows into the cabinet. We clean the drain pan, treat the line with bio-enzymatic solution, and inspect the cabinet interior for rust or microbial growth. The documented photo record shows the drain pan condition, the cabinet interior, and the post-cleaning assembly. This matters in Littleton’s variable spring weather, when systems switch between heating and cooling modes and condensate handling is stressed.
Heat Exchanger Cleaning
The heat exchanger is the sealed metal chamber where combustion gases warm indoor air without mixing with it. In gas furnaces common throughout Littleton’s 1980s and 1990s housing stock near Columbine and Southbridge, soot and scale reduce heat transfer efficiency and can, in extreme cases, create carbon monoxide risk through metal fatigue. We inspect with a borescope (a flexible camera with LED lighting) before cleaning, documenting any cracks, corrosion, or deformation per manufacturer guidelines. Cleaning uses soft brushes and vacuum extraction, not compressed air that could force debris into living spaces. If the borescope shows compromise beyond cleaning scope, we stop, photograph, and present options with a revised written price before proceeding.
Coil Treatment
After mechanical cleaning, we offer optional coil treatment: an EPA-registered antimicrobial applied to evaporator and condenser surfaces that inhibits microbial growth for the cooling season. This isn’t a substitute for cleaning; it’s a maintenance layer for coils that are already clean. In Littleton, where wildfire smoke particulate can carry organic compounds that feed microbial colonies, treatment extends the interval between deep cleanings. We use Guardsman-formulated products, apply at manufacturer-specified dilution, and document the batch number in your job record. The treatment is optional, priced separately in writing, and carries no recurring subscription.
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 HVAC Cleaning
We’ve cleaned and serviced hundreds of Honeywell air handlers and control systems in Littleton homes, particularly the TrueCLEAN and F100 media air cleaner integrations where the electronic control board must be protected during wet coil cleaning. Our crews carry Honeywell-specific gaskets and know the torque specification for the cabinet screws that seal the electronic air cleaner compartment. We’ve also worked extensively with Aprilaire whole-home humidifier and dehumidifier systems, including their 800-series steam humidifiers common in newer Littleton construction where tight building envelopes reduce natural air exchange.
Nikro equipment is what we use for negative-pressure extraction, and we’ve specified Abatement Technologies HEPA filtration on jobs where occupants have documented respiratory sensitivity. Whether your system is Honeywell, Aprilaire, Carrier, Trane, Lennox, or any other make, we can clean it. Our diagnostic process starts with the nameplate data: model, serial, and manufacturer specification, not guesswork.
BeforeAfterSigns You Need HVAC Cleaning Right Now
- Your energy bills have risen without rate changes or thermostat adjustment. When coils or blowers are dirty, the system runs longer to deliver the same cooling or heating. In Littleton’s summer cooling season, we’ve seen homeowners report 15-25% bill increases that tracked directly to clogged condensers. The compressor is the highest-draw component; forcing it to run against restricted airflow is expensive.
- You smell musty or sour odors when the system starts. This indicates microbial growth on the evaporator coil or in the drain pan, common in Littleton where spring temperature swings create condensation cycles that don’t fully dry. The odor is volatile organic compounds released by bacterial colonies; it’s not a filter issue, and scented filters won’t resolve it.
- Some rooms never reach the set temperature while others are comfortable. Uneven airflow often traces to a blower assembly coated in dust that reduces total system CFM (cubic feet per minute), or to a partially blocked evaporator coil that ices up and further restricts flow. We’ve traced this pattern in Littleton’s two-story homes in Willow Springs and Carriage Club where zoning dampers compound the effect.
- You see dust accumulation on registers within weeks of cleaning. When the blower and plenum are dirty, the system becomes a distribution mechanism for particulate that bypassed the filter. Clean registers that re-soil quickly point to upstream contamination, not a housekeeping problem.
- Your system short-cycles: runs briefly, shuts off, then restarts. A dirty evaporator coil can ice over, triggering the low-pressure safety switch. The ice melts, the switch resets, and the cycle repeats. This wears contactors and capacitors prematurely and never achieves stable temperature control. In Littleton’s shoulder seasons, this pattern is often misdiagnosed as a thermostat problem.
Our HVAC Cleaning Process - Step by Step
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Arrival and system identification. Our technician arrives in a marked CleanRun vehicle, uniformed and identified by name per Haven Standard Clause 3: Verified Crews. We locate the nameplate on your indoor and outdoor units, record model and serial numbers, and photograph the current condition of accessible components. This creates the baseline for your documented photo record.
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Written price delivery. Before any panel is removed, we present a written scope and price based on what we’ve observed and what you’ve described. Haven Standard Clause 1 is absolute: no work begins without your signature on a written price. If you have a competitor’s written estimate, we’ll provide a Free Second Opinion with our number beside it.
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Component access and pre-cleaning documentation. We remove access panels, photograph the evaporator coil, blower assembly, condenser fins, and heat exchanger (where accessible) with date-stamped images. These photos go to your job record and are available for your review before we proceed.
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Mechanical cleaning with contained extraction. Using Rotobrush contact agitation and Nikro negative-pressure collection, we clean each component without distributing debris into your living space. Condensers are cleaned with foaming agent and controlled rinse; coils are treated according to alloy type; blowers are removed for bench cleaning. Each step is photographed.
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Post-cleaning verification and documentation delivery. We reassemble, test run the system, measure temperature split and current draw, and photograph the cleaned components from the same angles as the pre-cleaning shots. Your delivered record includes: written scope, before-and-after photos of every cleaned component, technician notes, and the 365-Day Done Right Promise in writing.
How Much Does HVAC Cleaning Cost in Littleton?
A typical evaporator coil cleaning in Littleton runs $280-$380 for a standard residential system, while a complete HVAC cleaning that includes coil, blower, condenser, and air handler service runs $480-$680. Heat exchanger cleaning with borescope inspection adds $180-$260, and optional coil treatment is $85-$120 when performed as part of a larger service. These are whole-system prices, not per-vent or per-component teaser rates that balloon once work starts.
Several factors move the price within these ranges. System accessibility matters: air handlers in attics with limited hatch access, or in crawlspaces below grade, require additional time and safety setup. The degree of contamination affects labor: a coil with two seasons of cottonwood accumulation takes longer than one with light dust loading. Component count varies; dual-zone systems with two air handlers or multiple condensers are priced per system with volume consideration. And the specific equipment brand can matter where proprietary fasteners or control integrations require specialized handling.
What doesn’t affect the price: your neighborhood, your home’s market value, or how busy we are that week. The written price is derived from scope and labor, not from what we think you’ll pay. To avoid overpaying, reject any quote that won’t commit to a written number before work begins, that prices per vent or per register, or that advertises a low entry price without defining what’s included. CleanRun’s estimate is free, detailed in writing, and valid for thirty days. Call (720) 315-7291 to schedule.
HVAC Cleaning Near Littleton - Our Service Area
We serve Littleton and the surrounding metro corridor without mileage surcharges for standard service area calls. Typical response for estimate scheduling is within 48 hours, with service appointments available within a week of approval. Our coverage includes HVAC Cleaning in Englewood, HVAC Cleaning in Highlands Ranch, and extends to Cherry Hills Village, Greenwood Village, Centennial, Lakewood, Wheat Ridge, Denver, Parker, Golden, and Arvada. Crews dispatched to outlying areas like Roxborough Park or the foothills west of C-470 may require additional transit time, which we note when confirming your appointment.
Serving Littleton, CO - Our Local Coverage Area
We’re based in the Littleton area and offer HVAC Cleaning in Littleton, and we know this community well. Use the map below to see our service coverage - if you’re nearby, we can almost certainly help.
Frequently Asked Questions - HVAC Cleaning in Littleton
HVAC cleaning addresses the mechanical components that condition and move air: evaporator coils, blowers, condensers, heat exchangers, and air handlers. Air duct cleaning, which CleanRun also provides, addresses the distribution pathway. A system with clean ducts and dirty coils still underperforms; the services complement each other but are distinct scopes. Many Littleton homeowners schedule both for comprehensive maintenance.
A standard residential HVAC cleaning takes 2.5 to 4 hours depending on system configuration, accessibility, and contamination level. A single air handler with accessible components in a basement utility room is faster than a split system with attic and outdoor units requiring ladder work. We confirm the expected duration in your written scope so you can plan accordingly.
Complete HVAC cleaning in Littleton typically runs $480-$680 for a standard single-system home, with individual components like evaporator coil or blower cleaning available at lower scope. Every price is written and agreed before work begins, with no per-vent add-ons or post-arrival revisions. Call (720) 315-7291 for a free estimate with exact numbers for your system.
Yes. We’ve cleaned and serviced hundreds of Honeywell and Aprilaire integrated systems in Littleton, including electronic air cleaners, steam humidifiers, and media filtration units. Our crews carry manufacturer-specific hardware and follow published cleaning protocols to protect control boards and seals. If you have a different brand, we service all major manufacturers with equal documentation standards.
HVAC cleaning is scheduled maintenance, not emergency response. If your system has failed completely, you need a repair technician, not a cleaning crew. However, severe coil icing or condenser blockage in peak summer can push a marginal system into failure; in those cases, cleaning may be preventive maintenance that avoids the emergency call. We schedule based on urgency and your availability, not artificial scarcity.
Every CleanRun job is backed by the 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’s Haven Standard Clause 5, and it applies to HVAC cleaning exactly as written. The promise covers workmanship and component function, not subsequent contamination from filter neglect or construction dust.
Clear a three-foot workspace around your indoor unit and outdoor condenser, secure pets in a separate area, and ensure we have access to your electrical panel. If you have maintenance records or previous service notes, have them available. We don’t need you to pre-clean or move heavy furniture; our crews bring drop cloths and containment equipment. The technician will confirm any specific needs when calling to confirm your appointment.
Schedule Your HVAC Cleaning Service in Littleton Today
Call (720) 315-7291 to speak with a live person and schedule your free estimate. You’ll receive a written price before any work begins, a documented photo record of every component we clean, and the 365-Day Done Right Promise in writing. No coupons, no urgency tactics, no surprises. CleanRun Duct Repair & Cleaning serves Littleton homeowners with the same standard we’ve held since 2013.
Written by Tomas Reyes, Owner at CleanRun Duct Repair & Cleaning, serving Littleton since 2013.