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.
Nikro HVAC Cleaning in Lewisville: What to Know First
We provide independent Nikro HVAC cleaning in Lewisville for homeowners who want the work documented, not just promised. Most Nikro evaporator coil and blower cleanings run $280-$520 for a complete system service, and we deliver a written price before touching a single panel. Every job ends with a photo record of what came out of your air handler, delivered to you as part of the standard job file.
This page is for Lewisville homeowners with Nikro equipment - typically the Nikro HP20 and HP20-EC series air scrubbers, the SL4000 portable air movers, or the Nikro AFD (air filtration device) lines that contractors install in finished basements and utility closets around Castle Hills and Old Town. If your Nikro unit is pulling weak airflow, icing up, or throwing a musty smell after the blower kicks on, the problem is usually in the coil housing or blower wheel, not the filter. Call (940) 240-8552 and we’ll put a written estimate next to any competitor’s quote, free.
How Nikro Products Fail - and How We Fix Them
- HP20-EC blower wheel imbalance from dust loading. The HP20-EC’s forward-curved blower wheel runs at higher RPM than comparable Abatement units, and the blade geometry traps fine construction dust rather than passing it through. In Lewisville, we see this most in homes built 2018-2022 near the Hebron 121 corridor, where post-construction dust loads were heavy. The wheel develops a vibration you feel through the ductwork before you hear it. We pull the wheel, clean it on a bench with compressed air and soft-bristle agitation, then balance-check before reinstall. Replacement wheels are available OEM, but we’ve found the Nikro-spec aftermarket from Guardsman holds tolerance within 2 grams and costs roughly half.
- SL4000 condensate pan overflow from algae bridging the drain. The SL4000’s shallow pan sits directly below the evaporator coil, and Lewisville’s hard water plus summer humidity builds a biofilm bridge in 18-24 months. The float switch doesn’t trip because the bridge holds water level just below the shutoff. We see this in second-story utility closets where the pan is hard to access. Our fix: full pan removal, mechanical cleaning with a non-acidic foaming agent, then a wet-vac extraction of the drain line back to the P-trap. We photograph the pan before and after because the difference between a stained pan and a clean one tells you whether the last cleaner actually removed it or just sprayed and prayed.
- AFD series HEPA filter housing seal degradation. Nikro’s AFD units use a gasket-sealed HEPA bank that relies on even pressure across the frame. After repeated filter changes, the gasket compresses and creates bypass channels - dirty air slips around the filter, not through it. The unit still runs, but your “filtered” air isn’t. We replace the gasket with OEM Nikro silicone cord or, when the frame has warped, machine a replacement retainer. This is a warranty-safe repair if documented properly; we’ve done enough of them to know which serial number ranges had the softer gasket compound that fails early.
- HP20 evaporator coil fin corrosion from improper prior cleaning. The HP20’s aluminum fins are closely spaced at 14 fins per inch, and some cleaners hit them with high-pressure wands or acidic foams that flatten the fins or start galvanic corrosion at the copper-aluminum junction. We see this in Lewisville homes where a $79 coupon preceded our call. Our process uses low-pressure, pH-neutral foaming agent with dwell time, then rinse at under 150 PSI. The coil treatment we apply is manufacturer-specified for Nikro aluminum - not a generic “coil cleaner” from the hardware store.
- Control board relay pitting from voltage fluctuation. Lewisville sits at the end of several Oncor distribution branches, and voltage sag during peak AC load is real. The HP20-EC’s single-phase compressor relay is a known weak point; the contacts pit, the relay chatters, and eventually the board throws a fault or the compressor short-cycles. Cleaning the electrical cabinet and checking relay contact resistance is part of our standard service. If the relay is pitted, we replace with an OEM Potter & Brumfield or a quality equivalent - never a generic relay that can’t handle the locked-rotor amp draw.
Our Nikro HVAC Cleaning Process

- 1
Written scope and price before work starts. Haven Standard Clause 1: we inspect the unit, identify the Nikro model and serial, and deliver a written price for the full cleaning scope. No per-vent add-ons, no “we found something else” mid-job. You sign before we touch a tool.
- 2
Photo documentation of condition. We put a borescope in the plenum (the main duct chamber above your air handler) and photograph the coil face, blower wheel, and drain pan. Here’s the before photo. Now let’s talk about what happens next.
- 3
Component removal and bench cleaning. The blower wheel, drain pan, and filter housing come out. We clean each on a contained bench with HEPA-filtered extraction, not your laundry room sink. Coil cleaning happens in place with foaming agent, dwell, and controlled rinse.
- 4
OEM-vs-aftermarket parts decision, documented. If something needs replacement - gasket, relay, wheel - we show you the part, the OEM number, the aftermarket option if applicable, and the price difference. You choose; we write it down.
- 5
Reassembly, operational test, and final photo record. We run the unit through a full cycle, measure static pressure across the coil, and photograph the cleaned components. The photo record and written scope go to you by email before we leave.
- 6
365-Day Done Right Promise activation. The written guarantee goes into your file. If airflow drops, smells return, or the unit faults in the next year, we make it right.
Before
AfterWhat Nikro HVAC Cleaning Costs in Lewisville
| Service | Typical Range | What Moves the Price |
|---|---|---|
| Evaporator coil cleaning (Nikro HP20 / HP20-EC) | $280-$380 | Coil condition, fin damage from prior cleaning, accessibility |
| Blower wheel removal and cleaning | $180-$260 | Wheel size, bearing condition, need for rebalance |
| Condensate pan and drain line cleaning | $140-$220 | Pan removal required vs. in-place cleaning, drain line length |
| Full system cleaning (coil, blower, pan, cabinet) | $420-$520 | Unit location, contamination level, parts replacement needed |
| HEPA filter housing reseal (AFD series) | $160-$240 | Gasket only vs. frame machining, filter replacement included |
These are whole-system prices, not per-vent teases that triple once the truck arrives. The price we write is the price you pay. Call (940) 240-8552 for an exact quote - estimates are free, and we’ll put our number next to any competitor’s written estimate under our Free Second Opinion policy.
Why Lewisville Homeowners Call CleanRun Air Duct Cleaning Lewisville for Nikro Work

We’ve cleaned Nikro equipment in Lewisville since 2013 - from the original HP20 units still running in Old Town bungalows to the EC-series installs in newer construction near Valley Ridge. Tomas Reyes and our crew know the serial number ranges, the gasket compounds, and which aftermarket parts hold spec. When your Nikro unit needs a part we don’t stock, our relationships with Lennox, Trane, and Carrier distributors mean we can cross-reference blower wheels and relays faster than a single-brand shop.
Every tech is background-checked and uniformed under Haven Standard Clause 3: Verified Crews. You’ll get a name before anyone arrives. The photo record is included, not an upsell. And the 365-Day Done Right Promise is in writing, not a handshake. We’ve served 52,000-plus homes on that model. It works.
FAQs
No, if the work is documented and uses manufacturer-specified methods. We photograph every step and note the cleaning agents used, so you have a record if a warranty question ever arises. As an independent Nikro service provider, we’re not affiliated with Nikro, but we follow their maintenance guidelines for coil and blower care. Call (940) 240-8552 if you need documentation for a warranty claim.
You receive a photo record of every duct run and component we touched - coil face, blower wheel, drain pan, filter housing - before and after. If we can’t show you what changed, we didn’t do the job right. That’s Haven Standard Clause 1 in practice.
Replacement makes sense when the control board is obsolete, the heat exchanger has failed, or repair costs exceed 60% of a comparable new unit installed. For most Nikro HP20 and SL4000 units under 12 years, a thorough cleaning and targeted part replacement restores performance at a fraction of replacement cost. We’ll tell you straight if your unit is past that point - no point cleaning a machine that’s structurally done.
A standard evaporator coil and blower cleaning takes 2.5 to 4 hours, depending on contamination level and parts accessibility. Full system cleans with drain pan removal run 4 to 6 hours. We don’t rush the bench cleaning or the operational test - that’s where the quality lives.
The $79-$129 coupon jobs typically involve a shop vac in the register and a spray of deodorizer. They don’t remove the blower wheel, don’t clean the coil face properly, and don’t document anything. We’ve been called in after those jobs to find the original problem untouched and the homeowner out the coupon price plus our full cleaning fee. Written price, documented work, accountable results - that’s the alternative we offer.
Written by Tomas Reyes, Owner, CleanRun Air Duct Cleaning Lewisville at CleanRun Air Duct Cleaning Lewisville, serving Lewisville and nearby areas.




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