Fast, Reliable Emergency & Commercial HVAC Across San Francisco
When your rooftop unit fails during a SoMa heat wave or your Victorian flat’s wall furnace quits on a foggy July morning, you need an HVAC team that understands San Francisco’s peculiar infrastructure. We’re Crestview Heating & Air California, and our Emergency & Commercial HVAC team makes the run from our San Jose base to San Francisco regularly for emergency calls, commercial service agreements, and system replacements. Call us at (844) 560-6978 — we answer, we show up, and we fix systems other companies won’t touch.
Nearly two decades of HVAC experience means we’ve worked on virtually every system type found in this city: original wall furnaces in Tenderloin Edwardians, rooftop package units atop Mission District mixed-use buildings, ductless mini-splits retrofitted into Noe Valley Victorians with zero attic clearance. San Francisco’s housing stock demands specialized knowledge that franchise dispatchers simply don’t have.
Why Crestview Heating & Air California Is San Francisco’s Preferred Emergency & Commercial HVAC Company
Our reputation in San Francisco is built on showing up when others can’t. 250+ customers who left reviews agree — our 4.8-star average reflects consistent real-world performance on difficult jobs, not cherry-picked testimonials. Property managers in the Mission District and Chinatown call us back because owner Marcus Feldman also serves as Service Manager, meaning ownership-level accountability is built into daily operations, not just the sales pitch.
Response time to San Francisco matters for emergency HVAC. We don’t promise impossible windows, but we do prioritize commercial and emergency calls to the city, and our familiarity with San Francisco’s street grid, parking constraints, and building access quirks saves time on every job. We know which SoMa loading docks require advance coordination, which Nob Hill buildings have roof access only through a specific stairwell, and how to route refrigerant lines through horsehair-plaster walls without destroying historic fabric.
Owner-managed, not outsourced. That’s the difference.
Our Emergency & Commercial HVAC Services in San Francisco
24/7 Emergency HVAC
San Francisco’s micro-climate volatility creates sudden demand spikes that stress systems past failure. The Mission can hit 95°F while Nob Hill sits under 65°F fog — and your rooftop unit or wall furnace doesn’t get a warning. We take emergency calls for San Francisco properties when systems fail outside normal hours: no heat during a cold snap, no cooling during a heat dome, refrigerant leaks, electrical faults, motor seizures. Our emergency HVAC service gets you functional fast, with the parts and brand knowledge to fix rather than patch.
Commercial HVAC
San Francisco commercial buildings face unique burdens. Converted warehouse lofts in SoMa and concrete mid-rises near Market Street must meet California’s seismic-bracing requirements for HVAC equipment under CBC and ASCE 7 — engineering costs and installation complexity that inland markets rarely encounter at this enforcement level. We’ve handled commercial HVAC buildouts and retrofits across San Francisco’s varied commercial stock, from ground-floor retail on Mission Street to office spaces in Chinatown. From emergency calls to commercial buildouts, we have the technical range.
Rooftop Unit Service & Replacement
Rooftop units are the workhorses of San Francisco commercial HVAC, and they’re also the most punished by this environment. In San Francisco, the coastal salt-air and fog accelerate corrosion on commercial HVAC components like rooftop unit cabinets, condenser coils, and electrical connections — often requiring replacement 3–5 years sooner than inland systems would. We specialize in marine-grade solutions: coated condenser coils, stainless steel hardware, sealed fan motors, and corrosion-resistant electrical enclosures. Your system, our specialty — including brands most San Francisco competitors decline to service.
Chiller Service
Commercial buildings with centralized chilled-water systems — medical facilities, data-adjacent offices, larger retail — need chiller maintenance that accounts for San Francisco’s salt-laden air. Cooling towers and chiller condensers suffer accelerated fouling and corrosion here. Our chiller service includes water treatment consultation, tube cleaning, and marine-environment protection protocols that extend equipment life in coastal conditions.
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 Francisco
We service nine major HVAC brands: Carrier, Trane, Lennox, Goodman, Rheem, York, Daikin, Bryant, and American Standard. For San Francisco customers, this matters because many local shops limit themselves to two or three brands and turn away everything else. We don’t. We carry common parts for Trane, Lennox, Goodman, and Rheem on our service vehicles, and our factory-trained compatibility means faster turnaround on repairs that would otherwise wait for special-order components. A six-year-old Rheem rooftop unit with a failed board? We can source it. A Lennox mini-split with a refrigerant leak in a Visitacion Valley Victorian? We’re on it. No customer gets told “we don’t work on that.”
Common Emergency & Commercial HVAC Problems We See in San Francisco Homes
- Salt-air corrosion destroys rooftop units prematurely. The marine layer deposits chloride on condenser coils, fin stock, and electrical connections. We see refrigerant leaks and fan motor failures on commercial package units as young as five years old in the 94103 and 94107 ZIP codes — failures that would take 10–12 years inland.
- Fog moisture infiltrates control boards and contactors. San Francisco’s persistent humidity finds its way into electrical enclosures, causing intermittent faults that are maddening to diagnose. Emergency shutdowns at 2 a.m. are often traced to corroded low-voltage connections that passed inspection six months prior.
- Galvanized ductwork in Victorians rusts from humidity. Balloon-frame row houses in the Mission and Noe Valley often have original or retrofitted galvanized ducts that degrade from the inside out, compromising airflow and indoor air quality before homeowners notice visible damage.
- Micro-climate heat events overwhelm systems never designed for cooling. San Francisco’s Pacific marine layer held average July highs near 63–65°F for generations, so most residential buildings in 94111, 94112, 94114, and 94115 were constructed without central air conditioning. When the Mission or SoMa pushes past 90°F, single wall furnaces and basic ventilation can’t cope.
Pricing for Emergency & Commercial HVAC in San Francisco, CA
Honest pricing starts with real numbers. A typical AC repair in San Francisco runs $175–$765 depending on refrigerant type, parts availability, and access difficulty. Commercial rooftop unit repair in San Francisco runs $400–$2,000, with salt-corrosion damage and seismic-bracing requirements pushing complex jobs toward the higher end. Furnace repair runs $175–$825. New AC installation for a San Francisco property with existing duct infrastructure runs $4,130–$8,850; ductless mini-split retrofits in Victorians without ducts require custom quotes based on line-set routing and electrical upgrades.
| Service | San Francisco Price Range |
|---|---|
| AC Repair | $175 – $765 |
| Commercial Rooftop Unit Repair | $400 – $2,000 |
| Furnace Repair | $175 – $825 |
| AC Installation | $4,130 – $8,850 |
| Tune-Up / Maintenance | $95 – $235 |
Emergency service calls carry after-hours rates that we disclose upfront — no vague “we’ll tell you when we get there.” Commercial service agreements include scheduled maintenance that prevents the corrosion failures we see repeatedly in this market. Every estimate is free. Call (844) 560-6978 for exact pricing on your specific system and building.
We Also Serve Cities Near San Francisco
Our service radius extends throughout the peninsula and central Bay Area. We regularly work in the Mission District, Noe Valley, Chinatown, and Visitacion Valley — each with its own HVAC character, from the Mission’s heat-exposed commercial corridors to Noe Valley’s tight Victorian lots where mini-split placement requires creativity. Wherever you are in San Francisco, the same owner-managed team responds.
Serving San Francisco, CA — Our Local Coverage Area
We’re based in the San Francisco 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 — Emergency & Commercial HVAC in San Francisco
The marine layer deposits salt that corrodes condenser coils, cabinets, and electrical connections 3–5 years faster than inland exposure. We combat this with coated coils, stainless hardware, sealed motors, and more frequent maintenance intervals. Call (844) 560-6978 to schedule a corrosion inspection — estimates are free.
Yes, commercial HVAC replacements in San Francisco require permits through the Department of Building Inspection, and rooftop installations must comply with CBC seismic-bracing requirements under ASCE 7. We handle permit coordination as part of our replacement service. Call (844) 560-6978 to discuss your project timeline.
San Francisco’s documented micro-climate variation means SoMa can exceed 90°F during a heat dome while Nob Hill remains fogged in at 65°F the same afternoon — creating radically different cooling loads even within the same ZIP code. Your SoMa system may be undersized for peak demand, or your Nob Hill unit may be short-cycling in cool conditions. We perform location-specific load calculations rather than rule-of-thumb sizing. Call (844) 560-6978 for an assessment.
Many Victorian commercial buildings in San Francisco can support rooftop units with structural assessment and seismic bracing, though flat-roof load capacity and access constraints vary by property. We’ve installed on Mission Street mixed-use buildings and Tenderloin-era structures — each required custom engineering for the specific building. Call (844) 560-6978 for a site evaluation.
We service all nine major brands: Carrier, Trane, Lennox, Goodman, Rheem, York, Daikin, Bryant, and American Standard. For San Francisco commercial customers, this means no delay while a competitor sources unfamiliar parts or declines the job entirely. Call (844) 560-6978 with your model number — we’ll confirm compatibility immediately.
Ready to get your San Francisco property comfortable again? Whether it’s an emergency rooftop unit failure in SoMa, a chiller issue in Chinatown, or a long-overdue upgrade to a Mission District Victorian, Crestview Heating & Air California brings nearly two decades of HVAC experience to every job. Call (844) 560-6978 now for a free estimate — owner Marcus Feldman oversees every project personally.
Written by Marcus Feldman, Owner at Crestview Heating & Air California, serving San Francisco since 2006.