Complete HVAC system cleaning for North Hollywood homes and businesses. NADCA-certified technicians clean your supply ducts, return ducts, blower fan, evaporator coil, and air handler. Valley homes run their HVAC systems 10–11 months per year — proper cleaning matters more here than anywhere else in LA.
Dirty HVAC systems use up to 40% more energy · Indoor air quality rated top EPA concern · Full system from $299
Full HVAC cleaning in North Hollywood starts at $299 for systems with up to 10 vents. Larger systems (11–15 vents): From $399. 16+ vents or commercial: from $499. All pricing includes supply ducts, return ducts, air handler, and blower fan. Evaporator coil cleaning add-on: From $149. NADCA-certified technicians. Same-day service available. Call (818) 536-7759.
HVAC cleaning is the professional cleaning of your entire heating, ventilation, and air conditioning system — not just the duct runs, but all mechanical components: the air handler, blower motor and fan assembly, evaporator coil, drain pan, supply and return plenums, and every supply and return vent and grille throughout the home.
The NADCA (National Air Duct Cleaners Association) ACR standard — the recognized industry benchmark — requires that all system components be cleaned using source removal methods: mechanical agitation (rotary brush systems) combined with negative pressure (high-powered vacuum extraction) so that debris is removed from the system entirely, not simply redistributed. Companies that offer "HVAC cleaning" using only compressed air or a shop vacuum do not meet NADCA standard.
For North Hollywood and San Fernando Valley homeowners, HVAC cleaning is more critical than for most parts of the country. The Valley floor sits in a geographic basin that traps heat and particulates — Valley temperatures regularly exceed 100°F in summer, with some years seeing 110°F+ highs near the Van Nuys Airport corridor and the neighborhoods east of the 405. In this climate, residential AC systems run continuously from late May through October, operating 1,800–2,200 hours per year compared to the US average of 800–1,000. This extended operation cycle loads duct systems with dust, debris, and organic matter at a significantly accelerated rate.
The Valley's Santa Ana wind events — which funnel particulate-heavy desert air through the Cajon and Newhall passes and across the Valley floor — further accelerate duct loading during fall and winter months. North Hollywood properties near the 170, 101, and 134 freeway corridors are also exposed to elevated vehicle exhaust particulates that enter structures through HVAC air intake points.
NADCA ACR Standard: All component cleaning uses mechanical agitation (rotary brush) + negative pressure extraction simultaneously. We do not use air-only washing or compressed air flushing — methods that redistribute debris rather than removing it. If a company quotes significantly less than market rate, confirm they are using NADCA-compliant source removal methods.
Visible dust blowing from supply vents when the system turns on — a clear sign of accumulated debris in the duct interior ready to circulate through your home.
Musty, stale, or chemical odor when the AC runs — indicating biological growth (mold, mildew, bacteria) in the duct interior or on the evaporator coil and drain pan.
Significant dust accumulation on surfaces within 2–3 days of cleaning — a sign that the air supply system is actively distributing particulates throughout the home.
Allergy or respiratory symptoms that improve away from home — particularly relevant in North Hollywood where Santa Ana winds introduce desert particulates and Valley fever spores during fall wind events.
Higher-than-expected electricity bills during Valley summer months — dirty HVAC systems work harder to overcome restricted airflow, using 25–40% more energy according to Department of Energy data.
Uneven cooling between rooms — restricted duct sections reduce airflow to individual zones, creating hot spots in rooms furthest from the air handler.
No cleaning in more than 5 years — or in homes purchased without service history, which is common in the North Hollywood real estate market where many older homes change hands without disclosure of maintenance records.
Recent renovation or construction — drywall dust, insulation fibers, and construction debris enter HVAC systems during remodels. The NoHo West development and Lankershim Blvd corridor renovations have driven significant construction activity in the area over recent years.
The San Fernando Valley is geographically unique — a flat, 250-square-mile basin surrounded by mountain ranges on three sides. The Santa Monica Mountains to the south (crossed by the Cahuenga Pass and the 101 Freeway), the Verdugo Mountains to the east (rising behind Burbank and Glendale), and the San Gabriel Mountains to the north and east create a bowl that traps heat. The Valley floor, including North Hollywood, regularly runs 10–15°F hotter than coastal Los Angeles communities during summer months.
During peak summer heat waves, North Hollywood and Valley Village temperatures exceed 110°F. The areas near Coldwater Canyon, the 170/134 interchange, and the neighborhoods flanking the Tujunga Wash see some of the highest recorded Valley temperatures. Homes in these areas run their AC systems nearly continuously from late May through late September — a significantly longer cooling season than the US national average of 3–4 months.
This extended operation has direct consequences for HVAC system cleanliness. The Valley's semi-arid environment means elevated dust levels in the air supply year-round. During Santa Ana wind events — which funnel through the Newhall Pass and the 5/405 interchange area and across the Valley floor — particulate loads in outdoor air increase dramatically, loading filters and passing debris into duct interiors when systems are operating.
North Hollywood's mid-century housing stock adds another layer. Many homes in the 91606, 91605, and 91601 zip codes were built with original duct systems that have never been professionally cleaned. Homes purchased in the active real estate market near the NoHo Arts District and Lankershim Blvd theater corridor frequently change hands without HVAC service disclosure, leaving new owners unknowingly running systems with decades of accumulated debris.
Dans Hollywood Chimney & Air Duct Cleaning is based on Camellia Avenue in North Hollywood — we understand the Valley's specific HVAC demands from direct, daily experience in this service area. Every HVAC cleaning we perform follows NADCA ACR standard, and we carry full licensing and insurance coverage for LA County residential and commercial properties.
We begin with a complete system walk-through: duct material type, configuration, number of supply and return vents, air handler location and access, filter type and condition. We photograph the interior of accessible duct sections to document current contamination levels and share findings with you before work begins.
A high-powered HEPA-filtered vacuum is connected to the main return plenum or an access panel near the air handler. This creates negative pressure throughout the entire duct system — all loosened debris moves toward the vacuum rather than into your living spaces. Registers are sealed with protective covers to direct airflow.
Working from the farthest registers back toward the air handler, we use rotary brush systems to agitate and dislodge debris from each duct section while the negative pressure vacuum extracts it simultaneously. We clean every supply duct and return duct run — not just the accessible sections.
With the duct system under negative pressure, we clean the air handler cabinet, blower fan assembly (removing the wheel if necessary for thorough cleaning), and the evaporator coil enclosure. A dirty blower wheel is the single biggest driver of efficiency loss in HVAC systems — a wheel coated with dust moves significantly less air per revolution. We finish with drain pan inspection and flush.
All register and grille covers are removed, cleaned, and replaced. We perform a post-cleaning system run to verify airflow restoration across all registers and confirm no access panels have been left open. We provide a written service report including before/after documentation and any repair recommendations.
| Service | Price |
|---|---|
| Full HVAC Clean — Up to 10 Vents | From $299 |
| Full HVAC Clean — 11–15 Vents | From $399 |
| Full HVAC Clean — 16+ Vents | From $499 |
| Evaporator Coil Cleaning (Add-On) | From $149 |
| Antimicrobial Duct Treatment (Add-On) | From $89 |
| HVAC + Dryer Vent Bundle | Ask for pricing |
Written quote provided before any work begins. No travel fees throughout the San Fernando Valley.
Serving all neighborhoods in the San Fernando Valley and surrounding communities — from the NoHo Arts District and Valley Village to Toluca Lake, Burbank, and Studio City.
Full HVAC cleaning starts at $299 for systems up to 10 vents. 11–15 vents: From $399. 16+ vents: from $499. Evaporator coil cleaning add-on: From $149. Antimicrobial treatment: From $89. No travel fees throughout North Hollywood, Burbank, Glendale, Studio City, Sherman Oaks, Van Nuys, Toluca Lake, and Valley Village.
NADCA recommends every 3–5 years for most systems. However, Valley homes run HVAC 10–11 months per year — 2–3x longer than the national average — so systems accumulate debris much faster. Every 2–3 years is more appropriate for North Hollywood homes, especially those near the 101, 170, or 134 freeway corridors with elevated particulate exposure.
All supply air ducts, all return air ducts, air handler compartment, blower fan and motor housing, evaporator coil enclosure, condensate drain pan, and all register grilles. We follow NADCA ACR standard — mechanical agitation + negative pressure extraction. Evaporator coil cleaning is an add-on from $149.
Yes. The US Department of Energy estimates dirty HVAC systems use 25–40% more energy. In North Hollywood's 5–6 month AC season, this translates to significant electricity savings. Most homeowners see the service pay for itself within 1–2 summer billing cycles after cleaning.
NADCA ACR (Assessment, Cleaning, and Restoration) is the recognized industry standard. It requires cleaning all system components using source removal: mechanical agitation + negative pressure extraction. Companies using only compressed air don't meet NADCA standard and simply redistribute debris. Our technicians are NADCA-certified and follow ACR on every job.
Key signs: visible dust blowing from vents when system starts, musty odor when AC runs, significant dust buildup on surfaces within days of cleaning, allergy symptoms that improve when away from home, uneven cooling between rooms, or no cleaning in 5+ years. North Hollywood homes purchased without service records should have a system inspection.
Standard residential HVAC cleaning (10–15 vents) takes 3–5 hours. Larger systems or heavy contamination may take 5–7 hours. We protect furnishings and clean up completely. Same-day service is available most days throughout North Hollywood and the San Fernando Valley.
Yes. HVAC ducts accumulate dust mites, pet dander, pollen, mold spores, and bacteria that circulate through the home when the system runs. In North Hollywood, Valley fever spores and Santa Ana wind particulates add additional concerns. HVAC cleaning combined with MERV 11+ filtration produces significant indoor air quality improvement for allergy sufferers.
Yes. Pre-1980 North Hollywood homes may have fiberglass duct board interiors (porous, requires soft-bristle brushes), older flexible duct with degraded liners, or decades of accumulated debris with no prior service. We assess duct material and condition before starting and adjust our approach to avoid damage. Homes from this era often have the highest contamination levels we encounter.
Air duct cleaning covers the duct network only — supply and return runs. Full HVAC cleaning includes the ducts AND all mechanical components: air handler, blower fan, evaporator coil, and drain pan. Full HVAC cleaning is recommended for systems not serviced in several years. For annual maintenance after an initial full clean, air duct cleaning alone may be sufficient.
Yes. Despite the Valley's dry climate, mold grows in HVAC ducts due to moisture from evaporator coils, duct condensation, and accumulated organic debris. Signs: musty odor when AC runs, dark staining at vent grilles, or unexplained respiratory symptoms that improve outside the home. We apply EPA-registered antimicrobial treatment when mold is identified.
Yes, when done correctly. Fiberglass duct board requires soft-bristle brush systems rather than wire rotary brushes to avoid damaging the porous liner. We assess duct type before cleaning. If the fiberglass liner is already delaminating or deteriorated, we will advise replacement rather than cleaning — cleaning damaged fiberglass duct can release fibers into the air supply.
NADCA-certified technicians. Full system cleaning. Written quote before any work begins.
Mon–Sat 7AM–7PM · Sun 8AM–5PM · Serving All of the San Fernando Valley
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