Fast, Reliable Air Quality & Ventilation Across Agoura Hills
Air quality and ventilation work in Agoura Hills runs into problems you won’t find in most California suburbs. The Woolsey Fire burned through these hills in November 2018, and the Santa Ana winds still kick ash and fine particulates off fire-scarred terrain every fall. We’re Stonegate Heating & Air California, and our Air Quality & Ventilation team handles both the legacy contamination in surviving homes and the tight-duct, heat-pump-ready systems required in post-fire rebuilds. From the 1970s tracts near Kanan Road to the newer construction in the 91301 hills, we know what Agoura Hills attics and duct systems look like after 16 years of California HVAC work. Call (855) 467-1888 for a free estimate.
Why Stonegate Heating & Air California Is Agoura Hills’s Preferred Air Quality & Ventilation Company
Owner Jason Trent holds the title of Field Supervisor, not just Owner. That means he’s physically on Agoura Hills job sites, not managing from a back office. We’ve earned 499 verified reviews at a 4.7-star average over 16 years, and that volume matters. It means we’ve handled the specific problems Agoura Hills homeowners face: soot-coated coils from the Woolsey Fire, MERV-13 filters choking on Santa Ana dust, and ERV systems in Title 24 rebuilds that baffle owners used to simpler setups.
Our technicians are factory-trained or experienced on nine major brands — Carrier, Trane, Lennox, Goodman, Rheem, York, Daikin, Bryant, and American Standard. Whatever system you have, we don’t punt to a subcontractor. From a single-room mini split to a full commercial ventilation system, one team covers it. Emergency HVAC is available, and we respond to Agoura Hills calls with the urgency that 100°F Santa Ana days demand.
Our Air Quality & Ventilation Services in Agoura Hills
Air Filtration
Agoura Hills sits in a Very High Fire Hazard Severity Zone, so MERV-13 filtration isn’t an upsell here. It’s a genuine necessity. The problem is, standard high-efficiency filters clog in weeks during Santa Ana wind events when fine ash and dust lift off fire-scarred hillsides. We size filter cabinets properly for your system’s airflow, install 4-inch or 5-inch media filters that last longer than 1-inch pleats, and match the MERV rating to your blower capacity. In 91301 hillside homes, we often pair upgraded filtration with coil cleaning because contaminated coils destroy airflow even with new filters.
UV Air Purifier Installation
UV-C lamps target biological growth on evaporator coils and in drain pans, but in Agoura Hills they serve a secondary purpose. Smoke odor compounds from the Woolsey Fire can linger in porous duct liner and coil fins for years. UV oxidation breaks down these volatile organic compounds. We install UV lamps with proper intensity and dwell time for your coil surface area, not generic stick-on units. For homes near Chesebro Road or Cornell Road that survived the fire, this is often the missing piece after standard duct cleaning fails to remove the smell.
ERV/HRV System Installation & Service
Post-2019 rebuilds in Agoura Hills must comply with California Title 24’s mandatory balanced ventilation requirements. Most use Energy Recovery Ventilators (ERVs) or Heat Recovery Ventilators (HRVs) to bring in fresh air without dumping heating or cooling energy. The catch? These systems confuse homeowners used to simple exhaust fans. We install ERV/HRV units sized to your home’s cubic footage and occupancy, commission them for proper airflow balance, and show you how to clean or replace filters. Skip maintenance and the fresh-air intake becomes a bypass that undermines your tight duct system.
Humidifier & Dehumidifier Installation
Agoura Hills’s single-digit humidity during Santa Ana events cracks woodwork and irritates sinuses. Whole-home humidifiers tied to your furnace or air handler add moisture without the mold risk of portable units. Conversely, some canyon-adjacent homes in 91301 trap moisture in crawl spaces or basements. We install dehumidifiers with dedicated drainage and proper capacity calculations, not guesswork.
What happens when you call
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A real person answersNo phone trees — you reach a local pro.
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You get an upfront price rangeHonest numbers before anyone is dispatched.
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A background-checked tech heads outLicensed & insured, dispatched right away.
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You approve before work beginsNothing starts until you say go.
Trusted Brands We Service in Agoura Hills
We carry parts and have hands-on experience with American Standard, Carrier, Trane, and Lennox systems common in Agoura Hills homes. Post-fire rebuilds often spec Carrier or Trane heat pumps for Title 24 compliance, while surviving 1980s tracts frequently run original Lennox or American Standard furnaces. Our stock of local filters, UV lamps, and ERV cores means faster turnaround than ordering from a warehouse two counties away. Nine brands, one team. No “we don’t service that brand” dead ends.
Common Air Quality & Ventilation Problems We See in Agoura Hills Homes
- Woolsey Fire soot in evaporator coils and duct liners. We serviced a 1980s tract home on Chesebro Road where the homeowner complained of musty air and weak airflow. Opening the air handler, we found the evaporator coil caked with fine black soot from the Woolsey Fire. We performed a two-step coil cleaning with a specialized alkaline detergent and installed a Carrier MERV-13 media filter cabinet to protect the new coil. Six months later, the homeowner reported noticeably cleaner air and consistent cooling.
- MERV-13 filters clogging in weeks during Santa Ana wind events. Fine ash and mineral dust from fire-scarred terrain loads filters far faster than standard suburban dust. Homeowners near Kanan Dume Road see this every fall. We solve it with deeper media filters, pre-filtration where possible, and seasonal maintenance schedules timed before wind season.
- ERV/HRV systems in Title 24 rebuilds running unbalanced or bypassed. New construction in 91301 hills often includes these units, but builders rarely explain maintenance. Filters clog, intakes get blocked by landscaping debris, and homeowners disable the system rather than troubleshoot. We commission, balance, and maintain these systems so they actually work.
- Duct leakage in 1970s–1990s tract homes baking in 140°F attics. Original duct insulation degrades, tape fails, and seams leak conditioned air into unconditioned space. In Agoura Hills, this wastes cooling power you desperately need during 100°F Santa Ana days. We test, seal, and reinsulate with materials rated for extreme attic temperatures.
Pricing for Air Quality & Ventilation in Agoura Hills, CA
Here’s what Agoura Hills homeowners typically invest:
| Service | Typical Range in Agoura Hills |
|---|---|
| AC Repair | $150–$650 |
| Furnace Repair | $150–$700 |
| AC Installation | $3,500–$7,500 |
| Tune-Up | $80–$200 |
Air filtration upgrades in Agoura Hills typically run $400–$1,200 depending on cabinet size and filter media type. UV air purifier installation ranges $600–$1,500 for proper coil-mounted systems with adequate UV-C intensity. ERV/HRV installation in post-fire rebuilds or retrofits generally falls between $2,500–$5,500, with ongoing filter maintenance at $80–$150 per visit. Post-Woolsey Fire duct remediation and coil cleaning is project-specific, but most 91301 homes we’ve worked run $800–$2,400 for full coil cleaning, duct inspection, and liner remediation where needed. Every estimate is free, and Jason Trent reviews pricing personally before any work begins. Call (855) 467-1888.
We Also Serve Cities Near Agoura Hills
Our service area extends to Agoura, Westlake Village, Oak Park, and Thousand Oaks. Same owner-supervised standards, same multi-brand capability, same emergency response. Whether you’re in the 91301 hills or the 91376 valley floor, we cover your air quality and ventilation needs.
Serving Agoura Hills, CA — Our Local Coverage Area
We’re based in the Agoura Hills 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 — Air Quality & Ventilation in Agoura Hills
Yes. Smoke particulates infiltrated duct systems even in homes that didn’t burn, and many owners never had post-fire inspections. Our technicians routinely find soot-coated evaporator coils and degraded duct liners in surviving 91301 homes. Call (855) 467-1888 for a duct and coil inspection — estimates are free.
Yes. California Title 24 2019/2022 codes mandate balanced ventilation, typically ERV or HRV systems, in new construction. These are unfamiliar to most homeowners and require proper commissioning and maintenance. We install and service these systems specifically for Agoura Hills’s Title 24 rebuilds.
Fire-scarred hillsides around Agoura Hills produce fine ash and mineral dust that loads filters far faster than standard household dust. During Santa Ana events, this accelerates to weeks instead of months. We recommend deeper media filters and pre-season maintenance checks. Call (855) 467-1888 to schedule before wind season.
Yes. UV-C oxidation breaks down volatile organic compounds from smoke that linger in coil fins and duct liner. We’ve installed UV systems in multiple Woolsey Fire-surviving homes where standard cleaning didn’t remove the odor. Proper intensity and placement matters — we size units to your coil surface area, not generic coverage claims.
ERV and HRV filters need cleaning or replacement every 3–6 months in Agoura Hills, with full system balancing and intake inspection annually. Fire-zone dust and Santa Ana debris block intakes faster than in coastal areas. We offer maintenance plans timed to local conditions. Call (855) 467-1888 to set a schedule.
Written by Jason Trent, Owner and Field Supervisor at Stonegate Heating & Air California, serving Agoura Hills since 2008.