Fast, Reliable Air Quality & Ventilation Across Los Altos
Air quality and ventilation in Los Altos homes typically runs $1,800–$4,500 for whole-home solutions, with most installations completed in one to two days. We serve all of Los Altos, from the warmer western slopes of 94022 near Permanente Creek to the flatter neighborhoods of 94024 bordering El Camino Real. If you’re dealing with dry Diablo wind conditions, stuffy rooms from undersized ductwork, or you’re integrating air quality into a heat-pump retrofit, call us at (844) 560-6978 for a free estimate.
We’ve been driving to Los Altos for nearly two decades, and we know the difference between a 1962 ranch on a quarter-acre near Foothill Expressway and a rebuilt custom home off Magdalena Avenue. That local knowledge matters when we’re sizing an ERV for your specific microclimate or routing humidifier supply lines through a crawl space that hasn’t been touched since the Johnson administration.
Why Crestview Heating & Air California Is Los Altos’s Preferred Air Quality & Ventilation Company
Our Air Quality & Ventilation team has completed installations across the 94022, 94023, and 94024 zip codes, from original ranch homes to full teardown rebuilds. Los Altos customers specifically mention our ductwork problem-solving in reviews, because so many local homes present the same challenge: heating-only systems from the 1960s that now need to support modern air quality equipment.
With 250+ reviews averaging 4.8 stars, we’ve earned a strong local reputation. Owner Marcus Feldman serves as our Service Manager, so the same person who quotes your job oversees the installation. We’re not a franchise dispatching whoever’s available. We’re a San Jose-based shop that knows Los Altos’s building stock, its permit process through the City of Los Altos Building Department, and the east-west temperature split that affects equipment sizing.
We carry parts for Trane, Lennox, Goodman, and Rheem systems, which means most Los Altos repairs don’t wait on shipping. And because we understand the local housing stock, we can spot ductwork issues that other technicians miss entirely.
Our Air Quality & Ventilation Services in Los Altos
Air Filtration Systems
Los Altos’s pollen counts spike in late spring when oak and olive trees release, and the western 94022 neighborhoods catch more particulate from Diablo wind dust than the flatlands east of El Camino Real. We install MERV 13–16 whole-home filters, Lennox Healthy Climate HEPA bypass systems, and cabinet-style media filters sized to your existing ductwork. In many Los Altos ranch homes, the original return-air grille is too small for a high-MERV filter without choking airflow, so we often upsize the return path as part of the installation.
Humidifier Installation
Diablo wind events push western Los Altos indoor humidity below 20% for days at a stretch, cracking woodwork and irritating sinuses. We install bypass and fan-powered humidifiers from Aprilaire and Honeywell, integrated with your thermostat so they run only when the furnace or heat pump calls for heat. In 94022 homes with multi-zone mini-splits, we specify steam humidifiers that don’t depend on ducted airflow. We recently finished a custom installation near Permanente Creek where the owners wanted a Carrier Infinity air purifier paired with a humidifier to combat dry Diablo winds, but the original 1960s ductwork in the master bedroom was only 6 inches, undersized for the airflow needed. We upsized the trunk line and integrated a Lennox Healthy Climate HEPA bypass filter, ensuring balanced pressure and whisper-quiet operation.
Dehumidifier Installation
While Los Altos is generally dry, eastern 94024 homes with slab-on-grade construction and limited crawl-space ventilation can develop musty conditions in winter. We install whole-home dehumidifiers tied to your central duct system, with dedicated drainage so you’re not emptying reservoir tanks. For homes without full basements, which describes most Los Altos ranch stock, we specify compact horizontal units that fit in attic or closet installations.
UV Air Purifier Installation
UV-C lamps mounted at the evaporator coil prevent mold and biofilm growth, a real concern in Los Altos homes where original ductwork may have decades of accumulated debris. We install Lennox and Goodman UV systems sized to your air handler’s dimensions and airflow. Effectiveness depends on proper dwell time, which is why we always measure actual airflow before specifying lamp intensity. Undersized original ductwork causes high static pressure, reducing the effectiveness of UV air purifiers and ERV systems often installed in retrofits.
ERV/HRV System Installation
Energy Recovery Ventilators are the right choice for most Los Altos homes, pre-cooling incoming air with exhaust air in summer and tempering dry winter intake. We size ERVs to ASHRAE 62.2 standards, but we also account for your home’s actual leakage rate, which in 1960s ranch construction is often higher than new builds. In Los Altos, the combination of 1950s–1970s ranch homes with undersized original ductwork and tech-savvy homeowners often means that air quality upgrades like whole-home ERVs or UV air purifiers must be integrated into a retrofit heat-pump system, requiring custom duct modifications to maintain static pressure balance across zones.
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 Altos
We service and stock parts for nine major brands: Carrier, Trane, Lennox, Goodman, Rheem, York, Daikin, Bryant, and American Standard. For Los Altos customers, this means we don’t decline jobs because of brand incompatibility. Your system, our specialty. We maintain local inventory for Trane CleanEffects, Lennox Healthy Climate, and Goodman UV systems, which covers the majority of air quality equipment we install in 94022 and 94024. Factory-trained compatibility across these brands means faster turnaround when you need a repair, not a two-week wait for a parts order.
Common Air Quality & Ventilation Problems We See in Los Altos Homes
- Undersized original ductwork chokes new equipment. Ranch homes throughout the 94022 zip that have been partially remodeled over the decades often have a patchwork of duct generations, original 1960s trunk-and-branch in the bedrooms, flexible duct added in the 1990s to a family-room addition, and a newer air handler shoehorned into a converted garage. This creates static pressure mismatches that no single-point thermostat can balance without a full duct audit before any new equipment is quoted.
- Pressure mismatches cause uneven filtration. Patchwork duct generations create pressure mismatches that lead to uneven air filtration, a problem amplified by multi-zone setups in western 94022’s warmer microclimate. The bedroom with 1960s steel duct gets adequate airflow; the family room with 1990s flex duct doesn’t, and your expensive HEPA filter never sees that air.
- Smart-home sensors conflict with HVAC controls. DIY or poorly integrated smart-home air quality sensors often conflict with the new HVAC controls, leaving homeowners in custom 94022 homes with inaccurate readings and unaddressed humidity swings from Diablo wind events. We see this constantly: a Nest or Ecobee reading 45% humidity while the actual living space is at 18% because the sensor location was never validated.
- ERVs installed without static pressure testing. A whole-home ventilator adds resistance to your duct system. In homes with already-marginal static pressure, that extra resistance can drop airflow below manufacturer minimums, triggering safety lockouts and poor temperature control. We test before we quote, not after the installation fails.
Pricing for Air Quality & Ventilation in Los Altos, CA
| Service | Typical Range in Los Altos |
|---|---|
| Whole-home media air cleaner (installed) | $850–$1,800 |
| HEPA bypass filtration system | $1,400–$2,600 |
| Bypass humidifier (installed) | $650–$1,200 |
| Steam / fan-powered humidifier | $1,100–$2,100 |
| Whole-home dehumidifier | $1,500–$2,800 |
| UV air purifier (coil-mounted) | $450–$950 |
| ERV / HRV system (installed) | $2,800–$4,500 |
| Duct modification for static pressure balance | $800–$2,200 |
What moves you within these ranges? Duct accessibility in a Los Altos crawl space versus an accessible attic. Whether your electrical panel has capacity for a new 240V ERV circuit. If we’re integrating with a new heat-pump retrofit or retrofitting into existing gas-only infrastructure. We always provide upfront pricing before any work begins. Call (844) 560-6978 for a free estimate, we’ll inspect your ductwork, measure static pressure, and give you a firm number.
We Also Serve Cities Near Los Altos
Our service area extends to Los Altos Hills, Mountain View, Stanford, and Sunnyvale. If you’re in a neighboring city with similar ranch-home stock and ductwork challenges, our Air Quality & Ventilation team applies the same diagnostic approach. From emergency calls to commercial buildouts, we cover the full range of HVAC needs across the mid-Peninsula.
Serving Los Altos, CA — Our Local Coverage Area
We’re based in the Los Altos 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 Altos
Your air purifier can’t clean air it never sees. In Los Altos ranch homes with undersized or leaky ductwork, significant portions of your conditioned air bypass the filter entirely through gaps in plenums, disconnected flex runs, or oversized bypass ducts. We measure actual airflow at each register and seal or resize duct paths so your filtration equipment processes the full volume. Call (844) 560-6978 for a duct assessment, estimates are free.
Yes, but only after verifying your duct system can handle the added static pressure. Western 94022’s warmer microclimate means your heat pump already works harder than systems in eastern Los Altos, and an ERV adds resistance that can push marginal ductwork over the edge. We test existing static pressure, then modify trunk lines or add auxiliary returns as needed before ERV installation. Call (844) 560-6978 to schedule the diagnostic.
Fan-powered or steam humidifiers outperform bypass units during Diablo wind conditions because they don’t depend on extended furnace run cycles to evaporate water. In Los Altos’s mild climate, heat pumps and modern furnaces with variable-speed blowers may not run long enough at low speed to fully saturate a bypass pad. We size steam units to your home’s cubic footage and integrate them with your thermostat for automatic response to outdoor humidity drops. Call (844) 560-6978 for a quote.
You need zone-level control, not just a single thermostat. We install motorized dampers and secondary temperature/humidity sensors so your 1960s bedrooms with steel trunk lines receive proportionally different airflow than your 1990s addition with flex duct. In Los Altos homes, this often means upsizing the original return path and adding a dedicated small duct for the addition rather than trying to force balanced airflow through incompatible generations of ductwork. Call (844) 560-6978 for an evaluation.
Coil-mounted UV lamps require a central air handler to circulate air past the lamp, so they’re not effective in homes with only wall-mounted mini-splits or radiant heat. For Los Altos homes without central ductwork, we specify room-sized HEPA units or consider a small ducted air handler with integrated UV as part of a larger ventilation strategy. We evaluate your specific layout in 94022 or 94024 before recommending any solution. Call (844) 560-6978 to discuss options.
Ready to improve your Los Altos home’s air quality? Whether you’re integrating an ERV into a heat-pump retrofit, fighting Diablo wind dryness, or finally addressing uneven airflow from 1960s ductwork, we’ll diagnose your system honestly and quote upfront. No corporate layers, no outsourced technicians. Owner Marcus Feldman oversees every job personally. Call (844) 560-6978 today for your free estimate.
Written by Marcus Feldman, Owner at Crestview Heating & Air California, serving Los Altos and the greater San Jose area since 2005.