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.
Aprilaire Coil Cleaning: The Los Angeles Owner’s Guide
Aprilaire coil cleaning in Los Angeles typically runs $180 – $390 installed, depending on whether we’re treating the evaporator coil in place or pulling it for a full source-removal clean. We stock Aprilaire-compatible coil cleaning solutions and the specialized tools on our trucks, so most jobs are done in a single visit. Most homeowners discover they need this after a summer electric bill spikes, the system runs longer than it used to, or a tech points out the coil looks like it’s growing a gray sweater.
Here’s the reality we see across Los Angeles County every week: your Aprilaire system’s coil is a moisture magnet. In our climate, dust, pet dander, and the occasional wildfire ash settle onto that wet surface and bake into a crust that insulates the coil from the air passing over it. That means your system works harder to move the same amount of cooling, and you pay for it every billing cycle. If your coil hasn’t been touched in three or more years, it’s almost certainly costing you money right now.
Which Aprilaire Models This Applies To
This service applies to the evaporator coils inside Aprilaire whole-home air handlers and any Aprilaire filtration or dehumidification unit with an integrated coil. The most common units we work on across Los Angeles are the Aprilaire 5000 series air purifiers paired with central HVAC systems, plus the Aprilaire E-series dehumidifiers that run hard in homes from Santa Monica to Pasadena where humidity creeps up despite the dry heat.
Here’s the compatibility gotcha most owners don’t know: Aprilaire doesn’t manufacture coils under their own brand name in most residential installs. Your “Aprilaire system” is typically an Aprilaire air cleaner or dehumidifier bolted to a coil made by a major OEM like Carrier, Trane, or Lennox. That’s why we don’t guess. Before we touch anything, we check the data plate on the air handler and match the coil dimensions, fin spacing, and refrigerant type to what’s actually in your unit. For Aprilaire-branded components, we carry OEM-spec compatible cleaners that are safe for the aluminum fins and copper tubing used in Aprilaire filtration housings. We’re an independent service provider, by the way, not affiliated with Aprilaire, which means we stock what actually works rather than what one manufacturer wants us to push.
Signs Your Aprilaire Coil Cleaning Is Failing
- Your system runs constantly but the house never hits the thermostat setting. A fouled coil can’t transfer heat efficiently, so the compressor runs longer cycles. We see this constantly in the Valley during July and August when homeowners assume their system is just “old” when it’s actually just dirty.
- Electric bills climb with no change in usage patterns. A coated coil can reduce system efficiency by 10 – 30%. In Los Angeles, where AC runs from May through October, that’s real money. If your kilowatt-hours jumped year over year with the same thermostat behavior, the coil is a prime suspect.
- You can see gray, fuzzy, or crusty buildup through the access panel. This is the visual tell. If the coil looks like it’s covered in lint or has dark patches between the fins, that’s biofilm and debris blocking airflow. In coastal neighborhoods like Playa del Rey or Long Beach, the salt air accelerates this crusting.
- There’s a musty or dirty-sock smell when the system first kicks on. That odor is microbial growth on the wet coil surface, and it’s common in Los Angeles homes where condensation sits on the coil during our humid morning hours. The smell is the coil broadcasting that it needs attention.
- Weak airflow from your vents even with a clean filter. If you’ve changed the filter and airflow still feels anemic, the coil is likely restricting air movement. We’ve measured pressure drops across dirty coils that are double what a clean coil registers, and your blower motor feels every bit of it.
Replacement Cost & What’s Included
Here are the line-item ranges for Los Angeles, not national averages:
- In-place coil cleaning: $180 – $260. We clean the coil where it sits using professional-grade coil cleaner, fin combs, and negative-pressure extraction so loosened debris goes into our Nikro HEPA vacuum, not into your ductwork.
- Full removal and source-removal cleaning: $280 – $390. We pull the coil, clean it outside or in containment, inspect for fin damage, straighten bent fins, and reinstall with fresh insulation on the lines. This is the option we recommend when the coil hasn’t been touched in 5+ years or if there’s visible mold.
- Coil replacement (if cleaning reveals damage): $450 – $900 depending on the coil dimensions and SEER rating match. Sometimes the coil is too far gone, and honest advice is to replace rather than clean.
Every quote includes the cleaner, labor, fin straightening, and a written price before we start. The 365-Day Done Right Promise covers the work: if the coil isn’t right within a full year, we return and correct it at no charge. No per-vent pricing, no surprise line items. You’re also getting a written guarantee on every repair.
DIY or Call Us?
You can safely do one thing yourself: check the access panel and look at the coil. If you see heavy buildup, snap a photo and send it to us. What we don’t recommend is spraying store-bought coil cleaner into your system without understanding coil chemistry. The wrong cleaner can etch aluminum fins, destroy the coil’s protective coating, or send acidic runoff into your drain pan and condensate line. Some foaming cleaners also push debris deeper into the fin stack, making the problem worse. Evaporator coils sit in a confined space with sharp metal edges, live electrical connections nearby, and refrigerant lines you don’t want to jar. If you’re not comfortable with all of that, call us at (737) 727-2314 and we’ll handle it. We’d rather see you spend the money on a proper cleaning than a $2,000 coil replacement from a DIY attempt gone sideways.
FAQs
A properly cleaned coil in Los Angeles stays clean for 2 – 3 years under normal conditions, though homes near freeways, in wildfire-prone areas, or with pets may need it annually. We recommend an inspection every year during a regular HVAC cleaning visit. Call (737) 727-2314 to schedule one.
In most cases, yes. A professional cleaning with fin straightening restores the coil to near-original performance at a fraction of replacement cost. Replacement is only necessary when the fins are corroded through, leaking refrigerant, or the coil is too brittle to handle. We’ll tell you honestly which path makes sense for your system.
An in-place cleaning takes 90 minutes to 2 hours. A full removal and source-removal cleaning takes 2 – 3 hours including reinstallation and system testing. You’ll have a live trackable arrival window so you know exactly when we’re coming, and before-and-after photos of the coil so you can see the difference with your own eyes.
Yes. Our technicians carry Aprilaire-compatible coil cleaners, fin combs, and the Rotobrush and Nikro extraction equipment needed to do the job right the first time. If we identify a larger issue during the cleaning, we’ll show you what we found and give you a written quote before doing anything beyond the agreed scope.
Written by Omar Haddad, Owner & Lead Technician, Cardinal Air Duct Cleaning at Cardinal Air Duct Cleaning, serving Los Angeles and nearby areas.




Before
After
Before
After
Before
After