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.
Fast, Reliable Air Duct Cleaning Across Lake Forest
Air duct cleaning in Lake Forest, CA typically runs $350 – $650 for a whole-home residential system and is completed in a single visit. Our crews serve Lake Forest from our Los Angeles dispatch office, with scheduling coordinated so we arrive inside the quoted window and finish the job that day.
We’ve worked the tract homes in Lake Forest 1 and 2, the hillside builds in Foothill Ranch, and the newer townhomes off Bake Parkway. Lake Forest’s Saddleback Valley location means your return ducts are pulling in fine, reddish-brown decomposed-granite dust during Santa Ana wind events – a particulate problem that doesn’t show up the same way in flatter, coastal South OC cities. Our Air Duct Cleaning team knows the difference between dry mineral dust loading and the humidity-driven mold issues that get oversold here. Call (361) 326-5060 for a free written estimate.
Why Hollis Air Duct Cleaning Is Lake Forest’s Preferred Air Duct Cleaning Company
Hollis Air Duct Cleaning has been part of the Garrison Partners family since 2004. We’re not a coupon-chasing outfit that changes its name every season. In Lake Forest, that matters. Homeowners here have seen the low-ball flyers – $49 whole-house specials that turn into $800 invoices once the technician is inside.
We don’t work that way. The price is written down before any work starts. It doesn’t move at the door. Our 365-Day Done Right Promise covers every job in writing: if the work fails within a year, we come back and make it right at no charge, including a free second visit.
Our technicians are background-checked, uniformed, and expected to operate under The Garrison Code: arrive inside the window, price in writing, complete the job by the book, leave the site clean. You’ll know who’s walking into your home before they arrive.
Phones are answered by a live person 24 hours a day, 7 days a week. No voicemail loops. No callback queues. No waiting until Monday to schedule.
Vent Cleaning in Lake Forest
Vent Cleaning in Lake Forest means source-removing the fine decomposed-granite dust, pollen, and dry soil that accumulates in supply and return grilles, branch runs, and trunk lines – not spraying a coating over it. A typical residential vent cleaning for a 1,500 – 2,500 sq ft Lake Forest home runs $250 – $450, with whole-system vent and trunk cleaning at the higher end of our $350 – $650 range.
Supply Vent Cleaning
Supply vents push conditioned air into your living spaces. In Lake Forest’s 1980s – 90s builds, these often run through tight attic chases above vaulted ceilings. We use rotary brush systems from Rotobrush to agitate buildup off galvanized branch walls, then extract it with negative-air machines. The goal is removing the dust that re-entrains during Santa Ana wind events, not masking it.
Return Vent and Grille Cleaning
Return vents are where Lake Forest homeowners notice the problem first – gritty dust on furniture, allergy flare-ups after wind events. We remove and clean filter grilles, clean the return boot and trunk, and inspect upstream for the reddish decomposed-granite loading that defines this market.
Air Duct Repair in Lake Forest
Air Duct Repair in Lake Forest addresses the gaps, separations, and corrosion that develop in 20 – 45 year old galvanized metal ductwork – the original rigid systems common in Lake Forest 1, Foothill Ranch, and Portola Hills tracts. Repair costs typically run $200 – $600 depending on access and extent, with full section replacement on difficult attic chases at the higher end.
Sealing Separations and Leaks
Metal ductwork expands and contracts. After decades, seams and joints separate. We seal with duct mastic and mechanical fasteners – the correct method for rigid metal systems – rather than tape that degrades in hot attics. This restores system pressure and stops conditioned air from dumping into your attic.
Corroded Section Replacement
Galvanized steel can corrode where condensation collects or where previous roof leaks dripped onto ductwork. We replace damaged sections with matching metal, sealed to code, and verify with visual inspection. In Lake Forest’s dry climate, corrosion is less common than in coastal cities, but roof leak history and bathroom vent routing create exceptions.
Trusted Brands We Service in Lake Forest
Hollis stocks filtration and duct components from Honeywell, Aprilaire, and Abatement Technologies for Lake Forest homeowners. We’re not running to the supply house mid-job. Honeywell and Aprilaire media filters handle the fine particulate load this climate generates. Abatement Technologies HEPA filtration integrates with our Nikro negative-air equipment for containment during cleaning. If your system needs a filter upgrade after we clear the ductwork, we install what fits your air handler – no guessing, no return trip.
Common Air Duct Cleaning Problems We See in Lake Forest Homes
- Reddish decomposed-granite dust packed in return trunks. The Santa Ana winds pull fine mineral soil off the Saddleback Valley hillsides and into your return-air system. It doesn’t look like household dust. It’s grittier, heavier, and it keeps coming back until the source is mechanically removed.
- Partial cleaning in tight attic chases above vaulted ceilings. Many Lake Forest homes from the 1980s and 1990s have cathedral or vaulted ceilings with ductwork buried in narrow attic spaces. Crews without camera inspection capability stop at the accessible trunk and leave branch runs loaded.
- Fogging “sanitiser” treatments sold as cleaning. A mist coating doesn’t remove particulate. It binds dust to duct walls temporarily. When the next Santa Ana hits, that decomposed-granite load re-entrains into your living space. Source removal is the only fix.
- Filter grilles clogged with dust bypassing undersized filters. Original Lake Forest builds often have 1-inch filter slots and standard grilles. Upgrading to a properly sized media filter after cleaning prevents rapid re-loading.
Pricing for Air Duct Cleaning in Lake Forest, CA
Whole-home residential air duct cleaning in Lake Forest runs $350 – $650 for typical 1,200 – 2,800 sq ft homes. This covers supply and return trunk cleaning, branch run agitation and extraction, vent grille cleaning, and camera verification. Dryer vent cleaning added to the same visit typically adds $120 – $180.
What moves the price: square footage, number of vents, accessibility of attic chases, and whether we find separations requiring repair. We inspect first, write the price down, and get your approval before starting. No per-vent add-ons. No equipment charges that appear mid-job. The price on the paper is the price you pay.
Commercial duct cleaning for Lake Forest office parks and retail spaces is priced per system after walkthrough. Call (361) 326-5060 for a free written estimate.
We Also Serve Cities Near Lake Forest
Our crews work throughout South Orange County. We regularly schedule Air Duct Cleaning in Lake Forest alongside jobs in Laguna Woods, Mission Viejo, Laguna Hills, and Aliso Viejo. Same standards, same written pricing, same 365-Day Done Right Promise in every city we serve.
Serving Lake Forest, CA - Our Local Coverage Area
We’re based in the Lake Forest area and know this community well. Use the map below to see our service coverage - if you’re nearby, we can almost certainly help.
FAQs About Air Duct Cleaning in Lake Forest
Lake Forest sits in the Saddleback Valley foothills where Santa Ana winds pull fine, reddish-brown decomposed-granite dust off the canyon slopes and directly into return-air systems. Coastal cities get salt air and higher humidity, but not this specific dry mineral particulate loading. Call (361) 326-5060 if you’re seeing gritty dust resettle within a day of wind events – that’s the sign.
Most Lake Forest homes with original rigid metal ductwork need cleaning and sealing, not replacement. Galvanized steel trunks last 50+ years when intact. We inspect for corrosion, separations, and access issues during our estimate. Replacement is only recommended when sections are structurally failed. Call (361) 326-5060 and we’ll show you what the camera sees.
No. Fogging coats dust but doesn’t remove it. In Lake Forest, where the problem is dry particulate buildup, not microbial growth, a sanitiser mist leaves the decomposed-granite load in place. It re-entrains on the next Santa Ana wind. Source removal with mechanical agitation and negative-air extraction is what works here. Call (361) 326-5060 for an estimate on actual cleaning.
Every 3 – 5 years for most Lake Forest homes, or sooner if you notice dust resettling quickly, allergy symptoms spiking after wind events, or reduced airflow at vents. Homes near active construction or with ongoing filter bypass issues may need more frequent service. Call (361) 326-5060 and we’ll assess your specific system.
Ask for source removal with rotary brush agitation and negative-air extraction, camera inspection of branch runs, and written proof of what was cleaned. Ask whether the price is flat per system or per-vent. Ask what happens if you’re not satisfied. At Hollis, the answer is the 365-Day Done Right Promise in writing. Call (361) 326-5060 for our written scope and price.
Written by Roy Castellanos, Owner at Hollis Air Duct Cleaning, serving Lake Forest and South Orange County since 2004.




Before
After
Before
After
Before
After