Fast, Reliable Air Quality & Ventilation Across San Rafael
San Rafael homeowners deal with a climate problem their coastal Marin neighbors don’t. Summer afternoons in this inland valley spike into the low-to-mid 90s°F while Pacific cooling gets blocked by the coastal ridge, and fall Diablo winds funnel wildfire smoke straight into your living room. Whole-house air filtration and mechanical ventilation aren’t luxuries here. They’re how you keep your home breathable in July and safe in October.
We’re Crestview Heating & Air California, and our Air Quality & Ventilation team makes the drive up from San Jose to San Rafael regularly. We know the difference between a Terra Linda slab ranch with zero ductwork and a Gerstle Park Victorian with a crawlspace you can barely squeeze through. That familiarity means we show up with the right equipment and the right plan, not a generic pitch. If you’re in 94901, 94903, or anywhere between Las Gallinas Avenue and downtown, call us at (844) 560-6978 for a free estimate.
Why Crestview Heating & Air California Is San Rafael’s Preferred Air Quality & Ventilation Company
Nearly two decades in HVAC means we’ve seen the specific headaches San Rafael homes create. Owner Marcus Feldman still serves as Service Manager on jobs, so the person quoting your ERV installation is the same person making sure it actually fits in your crawlspace. We’ve got 250+ customers who left reviews, averaging 4.8 stars, and plenty of those calls came from San Rafael neighborhoods where other companies either wouldn’t travel or showed up unprepared for the reality of mid-century slab construction.
Our response time to San Rafael is built around knowing the route. We don’t dispatch from a call center in another county. We understand that when Diablo winds are carrying smoke from Sonoma County into your valley, “next week” doesn’t work. From emergency filtration retrofits to planned ERV installations in Terra Linda, we treat San Rafael as a primary service area, not an afterthought.
The technical range matters too. Your system, our specialty. We service nine major brands including Trane, Lennox, Goodman, and Rheem, so whether you’ve got a 15-year-old furnace in a Kentfield split-level or a newer Daikin mini-split in Lucas Valley-Marinwood, we’re not going to tell you “we don’t work on that.” Owner-managed, not outsourced.
Our Air Quality & Ventilation Services in San Rafael
Air Filtration
Fall wildfire season hits San Rafael harder than most of Marin because of that valley geography. We’ve lost count of how many homeowners in 94903 bought portable HEPA units at big-box stores, then realized their open floor plan needed six of them to matter. We install whole-house filtration on existing HVAC systems where possible, and dedicated filtration units tied to ductless mini-splits where there’s no ductwork to use. A typical whole-house filtration retrofit in San Rafael runs $800–$2,400 depending on whether we need to modify your return-air plenum to accept a 4-inch or 5-inch MERV-13 filter.
ERV/HRV System
Energy Recovery Ventilators and Heat Recovery Ventilators are the right solution for tight, well-insulated homes that need fresh air without throwing away all the conditioning you just paid for. In San Rafael’s Terra Linda tract homes, we regularly install ERVs as part of ductless mini-split systems because there’s simply no existing ductwork to piggyback on. These are custom design jobs. A typical ERV installation in San Rafael runs $2,800–$5,500, with the higher end reflecting multi-zone ductless pairing and electrical upgrades for older homes.
Ventilation Install
Proper ventilation in San Rafael means accounting for valley heat, wildfire smoke, and housing stock that was never designed for mechanical cooling. We design and install exhaust ventilation, supply ventilation, and balanced systems for homes across 94901 and 94903. The Gerstle Park homes with those cramped crawlspaces? We know how to route flex duct without crushing it against knob-and-tube. The Terra Linda ranches? We bring the equipment to handle slab-foundation constraints. A new ventilation system install in San Rafael typically ranges from $1,500–$4,200.
Humidifier & Dehumidifier Install
San Rafael’s dry summer heat and damp winter fog create a swing that damages woodwork and makes homes uncomfortable. We install whole-house humidifiers on forced-air systems and standalone units for homes without ductwork. Dehumidifiers matter in those 94901 basements and crawlspaces where fog-layer moisture collects. Typical humidifier installation runs $450–$1,100; dehumidifier installation ranges $1,200–$2,800 depending on capacity and drainage routing.
UV Air Purifier
UV-C lamps installed in your air handler or mini-split head kill mold, bacteria, and viruses circulating through your system. In San Rafael’s older homes where decades of dust and moisture have built up in inaccessible ductwork, or in new tight homes where biological growth gets trapped, UV adds a layer of protection. A typical UV air purifier installation runs $600–$1,400.
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 San Rafael
We stock parts and maintain factory-trained compatibility across Carrier, Trane, Lennox, Goodman, Rheem, York, Daikin, Bryant, and American Standard. For San Rafael customers, that means faster turnaround when your Trane air handler needs a new filtration rack or your Lennox ERV needs a core replacement. We’re not waiting on a parts drop-ship from Sacramento. We carry common filters, cores, and control boards for the brands we see most in Marin County, and we know which Goodman and Rheem components cross-compatible with systems installed during the 2000s building boom in Lucas Valley-Marinwood and Kentfield.
Common Air Quality & Ventilation Problems We See in San Rafael Homes
- The Terra Linda ductwork surprise. Homeowners call for “central air with filtration” and don’t realize their 1962 slab ranch has no ducts at all. We arrive with design tools for mini-splits, not just a standard AC swap-out kit. This pattern repeats across dozens of identical floor plans built by the same developers throughout 94903.
- Gerstle Park electrical bottlenecks. Those pre-war Craftsman homes have knob-and-tube wiring that cannot safely power a modern ERV or whole-house air purifier. We regularly coordinate with electricians before ventilation work can begin, adding time and cost that homeowners didn’t anticipate.
- Undersized portable purifiers during smoke events. Diablo winds push wildfire smoke into San Rafael’s valley, and homeowners buy 300-square-foot HEPA units for 1,800-square-foot open plans. The math doesn’t work. We retrofit MERV-13 or higher into existing systems, or design dedicated filtration for ductless homes.
- Missing filter slots on original wall furnaces. Many Terra Linda ranches still run original 1960s wall or floor furnaces with no filtration capability whatsoever. Upgrading air quality means upgrading the heat source too, a conversation some homeowners haven’t had yet.
Pricing for Air Quality & Ventilation in San Rafael, CA
Here’s what we actually charge for air quality and ventilation work in San Rafael. These ranges reflect real jobs we’ve completed in 94901 and 94903, from downtown Victorians to Terra Linda ranches.
| Service | Typical Range in San Rafael |
|---|---|
| Tune-Up | $80–$200 |
| AC Repair | $150–$650 |
| Furnace Repair | $150–$700 |
| AC Installation | $3,500–$7,500 |
| Whole-House Air Filtration Retrofit | $800–$2,400 |
| ERV/HRV Installation | $2,800–$5,500 |
| Ventilation System Install | $1,500–$4,200 |
| Humidifier Installation | $450–$1,100 |
| Dehumidifier Installation | $1,200–$2,800 |
| UV Air Purifier Installation | $600–$1,400 |
What moves you within these ranges? Slab-foundation homes in Terra Linda need more labor for any ducted solution, often pushing homeowners toward ductless systems that cost more upfront but solve the structural problem. Older homes in 94901 may need electrical upgrades before ERV or high-MERV filtration can be safely installed. And wildfire-season emergency calls can carry urgency scheduling when demand spikes. We always provide upfront pricing before any work begins. Call (844) 560-6978 for your free estimate.
We Also Serve Cities Near San Rafael
Our service radius covers the full central Marin area. We regularly complete air quality and ventilation jobs in San Anselmo, Fairfax, Lucas Valley-Marinwood, and Kentfield, often routing same-day from San Rafael when we’re already in the valley. If you’re in a neighboring community and dealing with similar wildfire smoke, valley heat, or aging housing stock challenges, we can typically schedule within the same window.
Serving San Rafael, CA — Our Local Coverage Area
We’re based in the San Rafael 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 San Rafael
They don’t have one to begin with. The 1950s–60s slab-on-grade ranches in Terra Linda were built with wall furnaces or floor furnaces and no duct infrastructure whatsoever. Any central air quality upgrade, filtration or otherwise, requires either installing ductwork from scratch, which is often impractical in slab construction, or designing a ductless mini-split system with dedicated filtration. We regularly arrive for what homeowners think is a standard equipment swap and find a full custom design job instead. Call (844) 560-6978 and we’ll assess your specific floor plan before quoting.
Usually not. Many original wall furnaces and early forced-air systems in San Rafael homes lack the filter slot depth or blower strength for MERV-13. The denser filter material restricts airflow, which can overheat a furnace or ice up a coil. We check static pressure and blower capacity first. Sometimes a 4-inch or 5-inch media cabinet can be added to the return side. Sometimes the system needs upgrading. We won’t sell you a filter your equipment can’t handle. Call for an assessment.
It works the ERV harder. San Rafael runs 15–20°F hotter than coastal Marin during summer heat events, so your ERV is transferring more thermal energy between incoming and outgoing air streams. ERVs handle this better than HRVs because they transfer moisture as well as heat, reducing the latent load on your cooling system. We size ERV capacity for San Rafael’s actual summer design temperatures, not generic Bay Area assumptions. An undersized unit will struggle in August.
Yes. We regularly ventilate detached workshops for San Rafael homeowners, particularly in the acreage properties near Lucas Valley Road and the hillside lots above Montecito. These spaces need dedicated exhaust or supply ventilation depending on what you’re doing inside, and we can design mini-split-based solutions with filtration for workshops that double as hobby spaces. Electrical service to outbuildings varies, so we assess that as part of our site visit.
Yes. The City of San Rafael requires permits for mechanical ventilation systems including ERVs and HRVs, with inspections for electrical and mechanical compliance. We handle permit submission and scheduling as part of our installation process. The typical permit fee for residential mechanical work in San Rafael runs $200–$450 depending on system complexity, and we include this in our upfront quote so there’s no surprise. Call (844) 560-6978 to start the process.
Ready to get your San Rafael home’s air quality handled before the next heat wave or smoke event? Call (844) 560-6978 for a free estimate. We’ll look at your specific home, your actual equipment, and your neighborhood’s constraints, then give you upfront pricing and a plan that fits. From emergency calls to custom ERV installations, we’ve got the range and the local knowledge to get it done.
Written by Marcus Feldman, Owner and Service Manager at Crestview Heating & Air California, serving San Rafael and the greater Bay Area since 2005.