Whole-home duct cleaning
Dryer vent cleaning
Camera inspection
Sanitizing & deodorizingWhole-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 Coil Cleaning: The Alpharetta Owner’s Guide
Nikro coil cleaning parts and service in Alpharetta typically run $145 to $295 installed, depending on whether you need a replacement solution tank, spray wand, or the pump assembly itself. We stock Nikro-compatible coil cleaning components at our Alpharetta shop and can usually have your rig back in service the same day you call. Most owners discover the failure mid-job: the spray pattern goes weak, the pump starts pulsing, or the tank won’t hold pressure. What had been a routine evaporator coil cleaning turns into a stalled appointment and a homeowner waiting on you. That’s the call we answer most weeks here at Hollis Air Duct Alpharetta, and we keep the common failure parts on hand because of it.
Which Nikro Models This Applies To
Nikro builds coil cleaning systems around a few core pump and tank configurations, and the parts don’t always swap across model lines the way you’d hope. The big split is between the hand-pump sprayers and the powered pump units. Hand-pump systems use a simple pressurization tank, a pickup tube, and a wand with an adjustable nozzle. Powered units, like the coil cleaning attachments on Nikro’s larger maintenance carts, use an inline pump that pulls solution from the tank and pushes it through a trigger wand at 40 to 80 PSI. Before you order anything, look at the label on the pump housing. It’ll have a model and serial that tell us exactly which seals, wand, and tank gasket you need. We also match OEM Nikro parts against quality aftermarket equivalents from brands like Goodway and Nu-Calgon. For coil cleaning specifically, the aftermarket wands and nozzles are often fine. The pump and the tank gasket, though, are worth buying OEM. They’re tolerance-critical, and a gasket that’s fractions of an inch off will leak solution onto a finished floor. One compatibility gotcha we see in Alpharetta: the older Nikro steel tanks use different thread patterns on the fill cap than the newer poly tanks. Try to swap a cap between them and you’ll get a slow pressure bleed that ruins your spray pattern by the second coil. Nikro labeling gets faded after a few Georgia summers in a van, so if you can’t read it, call us at (762) 769-7145 and we’ll ID it from photos while you’re on the phone.
Styles & brands we work with




Signs Your Nikro Coil Cleaning Is Failing
- Spray pattern goes lazy or sputters. The wand orifice is partially clogged with dried coil cleaner, or the pump’s internal check valve is worn. If you clean the orifice and the sputter comes back within ten minutes, it’s the pump, not the nozzle.
- Tank loses pressure while you’re working. The fill cap gasket has flattened out. These gaskets are a wear item in Georgia, where a van interior hits 140 degrees by June and bakes the rubber. We replace them routinely on Nikro tanks that live in service trucks.
- Pump motor runs but no solution moves. Usually an air leak at the pickup tube connection or a cracked pickup tube inside the tank. The deeper cause is scale buildup in the pump’s intake screen, common with the alkaline coil cleaners used on Georgia heat pumps.
- Trigger sticks or won’t fully shut off. The trigger valve O-rings have swollen from chemical exposure. Coil cleaner is aggressive by design, and O-rings that spend all summer soaking in it will eventually swell and bind.
- You see cleaner weeping from the pump housing. A seal has failed. Turning up the pressure won’t fix it, and running the pump dry while it leaks is a good way to turn a $40 seal into a $140 pump replacement.
See the difference
Before
After
Before
After
Before
AfterReplacement Cost & What’s Included
In Alpharetta, figure $145 to $295 installed for most Nikro coil cleaning repairs. The low end covers a wand, nozzle, and gasket set with labor. The high end is a replacement pump assembly or a new tank with all seals, installed and pressure-tested before it leaves our shop. Nothing gets quoted sight-unseen, and nothing gets added once the work starts. We write the price down before we touch the tool. That’s the same rule we run on every air duct cleaning job: written price, done by the book, site left clean. The Garrison Standard applies to tool benches too, not just living rooms. And because we’re an independent service provider, not a Nikro dealer, we don’t have a sales target pushing us to sell you a whole new system when a $45 gasket kit fixes the problem.
DIY or Call Us?
Cleaning a clogged wand orifice or swapping a fill cap gasket is within reach for most owners. Those are cheap, safe, ten-minute fixes. It gets riskier when you open the pump housing, because the internal seal reassembly is finicky and chemical residue will be present. Coil cleaner is caustic. It’ll burn your hands and damage anything it drips on. Wear gloves either way. If the pump is making a grinding sound, or the pressure is climbing toward the tank’s rated limit, stop using it and call us at (762) 769-7145. A pressurized tank with a failing pressure relief valve is not something to troubleshoot with a wrench. We stock the common Nikro coil cleaning failures on the shelf in Alpharetta: pump seals, tank gaskets, wands, nozzles, and pickup tubes. If we don’t have your specific part, we’ll have it in a day or two from our supply chain and we’ll tell you that upfront rather than keeping your tool hostage on our bench.
FAQs
Figure four to six years of regular use before the pump seals and tank gasket need replacement. Georgia heat accelerates rubber and plastic degradation, so units stored in a sealed van or trailer last about a year less than units kept in a climate-controlled shop. The chemicals matter too: acidic evaporator coil cleaners are harder on seals than pH-neutral formulas.
Yes, in most cases. Worn seals, O-rings, and check valves are replaceable. If the motor windings are burned out or the pump housing is cracked, replacement is the only honest answer. We’ll tell you which path makes sense before any money changes hands, and we’ll show you the failed part.
Most repairs run 30 to 90 minutes on our bench. We pressure-test every tank and pump before it leaves. If you’re mid-job and down, call (762) 769-7145 and we’ll tell you if we can turn it around while you wait.
We keep the common Nikro coil cleaning failure items at our Alpharetta shop: pump seals, tank gaskets, wands, nozzles, and pickup tubes. We also carry parts for Lennox, Trane, and Carrier HVAC equipment, since coil work rarely stops at the tool.
They’re usually aftermarket or unbranded clones with looser tolerances. A cheap tank gasket that doesn’t seal will cost you more in lost time than the money you saved. For contact items like gaskets and pump seals, we use OEM Nikro parts. It’s not worth a callback for $12 in savings. Call (762) 769-7145 for an exact quote on your model, and we’ll give you the straight number before any work starts.
Written by Roy Castellanos, Owner, Hollis Air Duct Alpharetta at Hollis Air Duct Alpharetta, serving Alpharetta and nearby areas.