Fast, Reliable Air Quality & Ventilation Across Los Gatos
Whole-home air filtration, UV purification, and balanced ventilation in Los Gatos typically run $150–$1,200 for most residential installs, with ERV and HRV systems reaching higher depending on your home’s fuel type and duct configuration. We’re Stonegate Heating & Air California, and our Air Quality & Ventilation team makes the trip to Los Gatos from Sacramento with owner Jason Trent supervising fieldwork directly. Los Gatos isn’t a generic suburb. The same ZIP code can mean a propane-heated mountain home off Summit Road or a gas-line ranch on the valley floor, and your air quality solution has to match that reality. Call (855) 467-1888.
Why Stonegate Heating & Air California Is Los Gatos’s Preferred Air Quality & Ventilation Company
We’ve built our reputation in California over 16 years, and that longevity shows in nearly 500 verified reviews averaging 4.7 stars. Los Gatos homeowners aren’t looking for a faceless dispatch service. They want the technician who shows up to understand that a 95033 mountain install isn’t the same job as a 95030 downtown retrofit.
Jason Trent doesn’t run this company from a back office. He holds the title of Field Supervisor and stays physically present on job sites. That matters when you’re cutting into a 1920s Craftsman ceiling with 14 inches of attic clearance, or routing ERV ductwork around a hillside foundation in Chemeketa Park.
Our multi-brand fluency covers Carrier, Trane, Lennox, Goodman, Rheem, York, Daikin, Bryant, and American Standard. Whatever equipment is already in your Los Gatos home, we service it. No “we don’t work on that brand” dead ends.
Response time to Los Gatos runs same-day or next-day for standard calls, with emergency HVAC available when indoor air quality issues become health-urgent, like a failed HRV in a tightly sealed mountain home during wildfire season.
Our Air Quality & Ventilation Services in Los Gatos
Air Filtration Systems
Los Gatos sits where valley pollen meets mountain dust, and the Santa Cruz Mountain breeze carries particulates straight into homes on Blossom Hill Road and Tait Avenue. A basic air filtration system install in Los Gatos runs $150–$650. We size media filters to your existing return air cabinet, or retrofit when needed. In downtown Los Gatos (95030), we’ve repeatedly found original 4-inch filter slots in pre-WWII homes that can’t handle MERV-13 load without choking airflow. We recently installed a Lennox PureAir whole-home air filtration system in a 1950s ranch home on Blossom Hill Road (95030) where the homeowner’s asthma was aggravated by valley-floor pollen and dust from the nearby Santa Cruz Mountains. The home’s undersized 4-inch filter slot originally couldn’t handle MERV-13 media, so we retrofitted the return air cabinet to accept a 5-inch filter rack, cutting particulate levels by 60% in post-installation testing.
UV Air Purifier Installation
UV air purifier installation in Los Gatos costs $350–$1,200. The UV-C lamps mount inside your HVAC cabinet or ductwork, neutralizing mold spores and bacteria that thrive in the humid shoulder seasons along the valley floor. Here’s the local catch: in 95033, a homeowner who orders a standard gas UV air purifier that isn’t LP-rated risks sooting and incomplete combustion when paired with propane. We verify fuel type before we quote. For Craftsman homes in 95030 with no ductwork at all, we design standalone UV solutions or pair with mini-split ductless systems.
ERV/HRV Systems
Energy Recovery Ventilators and Heat Recovery Ventilators are critical in Los Gatos’s tighter new builds and retrofitted historic homes, where sealing for efficiency traps stale air and VOCs. But Los Gatos uniquely spans the Santa Clara Valley floor (95030, 95032) and the Santa Cruz Mountain communities above Lexington Reservoir (95033), where homes at 1,500–2,000+ ft elevations sit beyond PG&E’s natural gas distribution grid and rely on propane or electric systems instead. HVAC contractors serving the full Los Gatos footprint must routinely switch between gas-line residential work in the flatlands and propane-rated equipment in the mountains — a fuel-source duality that doesn’t apply in neighboring Campbell, San Jose, or Saratoga. ERV/HRV systems in 95033 must be specified for propane-compatible heat exchangers, a consideration flatland neighbors never face. Cold winter temperatures in mountain homes also cause heat recovery ventilator drain lines to freeze when units are installed in unconditioned crawlspaces without freeze protection. We build in drain heat tape and conditioned mounting locations as standard for 95033.
Humidifier & Dehumidifier Installation
Los Gatos’s microclimates create opposite humidity problems. The marine layer that pushes through the Santa Cruz Mountains keeps 95033 homes damp in summer, while the valley floor’s dry heat cracks woodwork and irritates sinuses. Adding a whole-house humidifier to a 95030 Craftsman home with original 6-inch ductwork overloads the system, reducing airflow and causing condensation in attic spaces. We calculate static pressure and duct capacity before recommending any humidification add-on. Dehumidifier installs in 95033 hillside builds often require dedicated drainage runs due to foundation configurations.
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 Los Gatos
We maintain active training and parts access for Carrier, Trane, Lennox, Goodman, Rheem, York, Daikin, Bryant, and American Standard. For Los Gatos customers, that means we’re not ordering specialty components from San Jose and burning two days of lead time. We stock common filtration media, UV lamp replacements, and ERV core assemblies for Bryant and American Standard systems locally. When your PureAir filter bank or Daikin ERV heat exchanger needs attention, the part’s already in the van or available same-day. That matters on a 95033 service call where Summit Road access already adds 30–40 minutes each way.
Common Air Quality & Ventilation Problems We See in Los Gatos Homes
- Propane furnace crossover in 95033. A mountain homeowner orders a standard gas UV air purifier online that isn’t LP-rated. We arrive to find soot streaks at the register and CO readings climbing. The fix is a propane-specified UV-C lamp and proper combustion air calculation, not a return.
- Undersized ductwork in 95030 Craftsman homes. Original 6-inch galvanized duct from 1925 can’t carry the CFM for a whole-house humidifier or high-MERV filter. We see collapsed flexible duct in attics with 18-inch clearance, and we redesign with oval or rectangular fittings that fit the space.
- ERV/HRV condensate freeze in mountain crawlspaces. A Aldercroft Heights homeowner’s new HRV quits in January. The drain line ran through an unconditioned pier foundation. We relocate the unit to a conditioned mechanical closet and install heat-traced drain tubing.
- Swamp cooler residue in 95032 ranch homes. Decades of evaporative cooling leave mineral scale in ductwork that destroys standard media filters in months. We specify washable electrostatic pre-filters and schedule more frequent changeouts until the system cleans.
Pricing for Air Quality & Ventilation in Los Gatos, CA
| Service | Typical Range in Los Gatos |
|---|---|
| Air Filtration System (basic) | $150–$650 |
| UV Air Purifier Install | $350–$1,200 |
| Humidifier Install (whole-house) | $400–$1,100 |
| Dehumidifier Install (whole-house) | $900–$2,500 |
| ERV/HRV System | $2,200–$5,500 |
What moves you within these ranges? Fuel type verification for 95033 propane homes adds specification time. Ductwork modifications in 95030 historic homes add material and labor. ERV/HRV installs with complex Summit Road access or hillside foundation routing run higher than flatland ranch jobs. We don’t guess over the phone. Every Los Gatos estimate starts with a free in-home assessment where Jason Trent or a senior tech measures your existing system, checks clearances, and confirms fuel type. Call (855) 467-1888 to schedule.
We Also Serve Cities Near Los Gatos
Our service radius covers Saratoga to the north, Campbell and Communications Hill to the east, and Cupertino to the northeast. Each has different air quality challenges than Los Gatos. Saratoga shares some mountain access issues but lacks the 95033 propane density. Campbell and Communications Hill are flatland gas-grid territory with simpler equipment specs. Cupertino’s newer stock means tighter envelopes and higher ventilation code requirements. We adjust accordingly.
Serving Los Gatos, CA — Our Local Coverage Area
We’re based in the Los Gatos 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 Los Gatos
Yes, we specify propane-rated HRV heat exchangers and combustion air systems for all 95033 installs. Standard natural-gas-specified HRV cores will soot and degrade when paired with propane furnaces. We confirm your tank size and appliance ratings before quoting, and we only install LP-compatible equipment in mountain Los Gatos homes. Call (855) 467-1888 and mention your propane setup when you book — we’ll bring the right specs to the first visit.
Yes, through a ductless mini-split system with integrated UV, or a standalone room-unit strategy for critical spaces. Most 95030 Craftsman homes have 14–24 inches of attic clearance and no original duct infrastructure, so traditional whole-duct UV isn’t feasible. We’ve retrofitted multiple downtown Los Gatos homes with Daikin ductless systems that include factory UV options, or installed standalone UV units in bedrooms and living areas where the homeowner spends the most time. Call (855) 467-1888 for a layout assessment.
We remove or bypass the swamp cooler, seal the roof penetration, and install a ducted ERV or HRV using the existing duct trunk if it’s in serviceable condition. Most 95032 ranch homes have 1950s–1970s ductwork that’s undersized by modern standards, so we test static pressure and upgrade sections as needed. The ERV provides balanced ventilation without the humidity load of evaporative cooling, which is critical as Los Gatos valley summers hit 95–102°F. Call (855) 467-1888 to check your ductwork’s condition.
Not different filter types, but different changeout schedules and possibly different MERV ratings due to airflow constraints. Your 95033 mountain home likely has a propane furnace with a smaller blower motor than gas-line equivalents, so a MERV-13 filter may restrict airflow excessively. We typically specify MERV-11 for 95033 propane systems unless we’ve verified blower capacity. Your 95030 or 95032 valley home can usually handle MERV-13 if the return air cabinet is properly sized. Call (855) 467-1888 and we’ll test your system’s pressure drop on-site.
Yes, through a dedicated ducted ERV with its own supply and return runs, or a decentralized room-by-room HRV approach. Radiant hydronic homes in Chemeketa Park have no forced-air ductwork to piggyback on, so we design standalone ventilation systems. The ERV ducting runs through crawlspaces or basement mechanical areas, with careful routing around the hillside foundation typical of 95033 builds. Freeze protection on drain lines is mandatory for mountain installs. Call (855) 467-1888 — Jason Trent supervises these complex retrofits personally.
Ready to fix the air quality in your Los Gatos home? Whether you’re dealing with valley pollen on Blossom Hill Road, propane combustion air in Aldercroft Heights, or a tight Craftsman retrofit downtown, we’ll size the right system for your specific ZIP code and fuel type. Call Stonegate Heating & Air California at (855) 467-1888 for a free estimate. Owner Jason Trent or a senior technician will come out, measure your space, and give you upfront pricing with no pressure.
Written by Jason Trent, Owner and Field Supervisor at Stonegate Heating & Air California, serving Los Gatos and the greater Sacramento region since 2009.