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.
Abatement Technologies Coil Cleaning: The Pasadena Owner’s Guide
Abatement Technologies coil cleaning in Pasadena typically runs $180 to $340 for a full evaporator coil cleaning on most residential systems, and we stock the right Abatement Technologies-compatible cleaning solutions and tools on our trucks to do it right the first time. Most Pasadena homeowners discover their coil needs attention the hard way: the AC is running but the house won’t cool below 78 degrees, or there’s a faint musty smell coming through the vents. That’s the coil telling you it’s been suffocating under a layer of dust, pet hair, and Pasadena’s fine airborne grit for too long.

We’re an independent service provider, not affiliated with Abatement Technologies. That means we carry what works, not just what one manufacturer says you should use. Roy Castellanos and our crew have been servicing systems in Pasadena for over a decade, and we’ve learned that coil maintenance is where most duct cleaning companies fall short. They’ll clean the ducts and skip the coil entirely, which is like washing the car but leaving the engine caked in mud.
Which Abatement Technologies Models This Applies To
Abatement Technologies makes coil cleaning products and systems used in residential and light commercial HVAC, not the coils themselves. So what you’re actually dealing with is an Abatement Technologies coil cleaning system or solution that’s either failed or isn’t performing, paired with a coil in your Lennox, Trane, or Carrier air handler that needs the work done. We also stock parts for those brands, which matters when the coil cleaning uncovers a bigger problem.
The most common Abatement Technologies products in Pasadena homes are their portable coil cleaning units and their spray-and-rinse chemical solutions. The chemical solutions have a shelf life: once opened, they degrade and lose effectiveness within 12 to 18 months, especially in a hot Pasadena garage. If your solution has been sitting on a shelf since before last summer, that’s likely why it’s not cutting through the buildup anymore. For the portable units, the failure point is almost always the pump or the spray wand connection. Check the label on the unit: Abatement Technologies uses a specific quick-connect fitting size on their wand hoses, and generic replacements from big-box stores won’t seat properly. That’s the compatibility gotcha that sends people back to the store twice.
On the coil itself: Pasadena homes built before 1990 often have coils with thicker fin spacing, which means they tolerate heavier buildup before performance drops. Newer high-efficiency coils are packed tighter, so they clog faster and need more frequent cleaning. We match the cleaning approach to the coil, not the other way around.
Styles & brands we work with




Signs Your Abatement Technologies Coil Cleaning Is Failing
- Reduced cooling, but the AC runs constantly. This is the classic clogged coil symptom. The coil can’t transfer heat because it’s wearing a blanket of Pasadena dust and pet dander. The compressor works overtime, your electric bill climbs, and the house still feels warm.
- Ice forming on the copper lines or the coil itself. When airflow across the coil drops, the refrigerant gets too cold and freezes. If you see frost on the line set outside, shut the system down before the compressor takes damage.
- Musty or sour smell from the vents. A dirty coil holds moisture, and moisture plus Pasadena’s warm air equals microbial growth. That’s the smell. Cleaning the coil and the drain pan together is the fix.
- Water pooling around the indoor unit. A dirty coil drips more condensate than the drain line can handle, or the sludge from the coil blocks the drain entirely. Either way, water ends up on the floor.
- Coil cleaning solution runs straight through without removing anything. If you’re using an Abatement Technologies spray-and-rinse product and the runoff is clear but the coil still looks dark between the fins, the solution has expired or the coil needs mechanical agitation, not just chemical action.
See the difference
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After
Before
After
Before
AfterReplacement Cost & What’s Included
For Pasadena homeowners, a full evaporator coil cleaning with Abatement Technologies-compatible solutions runs $180 to $340 depending on access and coil condition. If the coil is easily reached in an attic or closet air handler, you’re on the lower end. If it’s buried in a Pasadena crawlspace or the coil hasn’t been touched in a decade and needs deep fin combing, expect the higher end. If the drain pan is cracked or the coil has a refrigerant leak, that’s a separate repair, and you’ll know the written price before we touch anything.
Every job includes the cleaning solution, the mechanical cleaning, drain line flushing, and a written price before work starts. No estimates that balloon once the technician is inside your home. And like every job we do, it’s covered by our 365-Day Done Right Promise: if the coil re-clogs or the cleaning doesn’t hold up within a year, we come back and make it right at no charge. That includes the second visit. Written down, not negotiated.
DIY or Call Us?
You can check a few things yourself without touching the coil: look at the air filter, check the drain pan for standing water, and listen for the system short-cycling. If the filter is clean and the system still isn’t cooling, the coil is the likely culprit. That’s where DIY ends for most people.
The coil itself sits inside the air handler, and the fins are sharp enough to slice fingers. The chemicals used for coil cleaning are caustic until rinsed properly, and if you don’t neutralize the runoff, it eats at the drain pan and the surrounding metal. We’ve seen Pasadena homeowners spray hardware-store cleaner on a coil, leave it too long, and end up with pinhole leaks in the coil itself. That turns a $250 cleaning into a $1,200 coil replacement. The duct work doesn’t lie, and neither do I: this is one job where a background-checked, uniformed technician with the right Abatement Technologies-compatible equipment pays for itself. Call us at (626) 469-5477 and we’ll give you a written price before we start.
FAQs
A professional coil cleaning in Pasadena typically holds up for 2 to 3 years, but homes with pets, old ducts, or lots of open-window time may need it every 18 months. Pasadena’s dry climate means airborne dust settles fast, and the coil is the first stop. If your ducts haven’t been cleaned in years, the coil will re-clog faster than the cleaning interval would suggest. Call (626) 469-5477 and we’ll tell you honestly whether the ducts or the coil need attention first, or both.
Yes, most portable Abatement Technologies units fail at the pump or the wand connection, and both are replaceable parts rather than full-unit replacements. We stock common pump assemblies on the truck for Pasadena service calls. If the unit is more than 8 years old and the pump plus the wand are both shot, replacement usually makes more sense than repair. We’ll give you the numbers before you decide.
Most residential coil cleanings in Pasadena take 60 to 90 minutes on site, including drain line flushing and a before-and-after inspection. If the coil needs fin combing or the access is tight, plan for up to 2 hours. You’ll get a written price before we start, and that price doesn’t move.
We stock Abatement Technologies-compatible cleaning solutions and common replacement pump assemblies on our trucks, so most Pasadena jobs are completed the same visit. If we need to order a specific part, we’ll tell you before we leave and give you a firm date, not a window. Call (626) 469-5477 and we’ll confirm what’s in stock before you book.
Written by Roy Castellanos, Owner, Hollis Air Duct Pasadena at Hollis Air Duct Pasadena, serving Pasadena and nearby areas.