17 Best Furnace Repair Companies in San Francisco, CA (2026)
Why Furnace Repair matters in San Francisco, California’s dense urban grid
Chilly, foggy nights and older, stacked-flat buildings make reliable heating important for many households in San Francisco. Finding best furnace repair companies in San Francisco, California helps ensure efficient, code-compliant fixes and reduces repeated service calls across the dense urban grid.
Quick Picks
Awards based on the same publicly available signals as the Vouched Score, including provider-stated certifications and dealer status. Not independently verified.
Which of these 17 Furnace Repair pros in San Francisco, California list the highest review counts and long warranties?
| # | Provider | Score | Years | Best for | |
|---|---|---|---|---|---|
| 1 | MMagic Plumbing Heating & Cooling | 88 | 4.9 (1,915+) | 46+ | ★ Highest Vouched ScoreMost Transparent Pricing24/7 No-Heat Emergency Repair |
Editorial: Magic Plumbing lists ducted air-source heat pump installation services on its website. The company reports 45+ years serving San Francisco homeowners. Magic Plumbing states same-day service across San Francisco. The site advertises flat-rate pricing and free estimates for HVAC work. San Francisco's mild, foggy climate often favors efficient heat pumps over high-capacity furnaces. Strengths:
Reviewers praise:
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| 2 | CCabrillo Plumbing, Heating & Air | 87 | 4.9 (1,180+) | 65+ | Furnace Tune-Up & Maintenance |
Editorial: Cabrillo lists central AC replacement and full-system installs across the Bay Area. Strengths:
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| 3 | HHeating And Air Experts | 86 | 5.0 (800+) | ||
Editorial: Heating And Air Experts advertises same-day emergency response for no-heat calls. The company states flat-rate pricing on its service pages. Their site cites 15+ years of HVAC experience serving Bay Area customers. San Francisco's older homes often need careful combustion and draft checks after seasonal weather shifts. Review snippets note quick diagnoses and same-day repairs. Strengths:
Reviewers praise:
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| 4 | AArch Plumbing Inc. | 81 | 4.9 (295+) | 20+ | |
Editorial: Arch Plumbing leads with same-day emergency response, per their site. The company lists gas-valve and combustion work among specialties. Arch Plumbing notes over 20 years of Bay Area trade experience. Several recent customer reports praise clear diagnostics and same-day heat restoration. San Francisco's older multi-story buildings make prompt gas repairs especially important here. Strengths:
Reviewers praise:
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| 5 | NNext HVAC and Appliance repair | 78 | 4.8 (365+) | ||
Editorial: Ventilation: website lists ERV/HRV ventilation service and ductwork options. Next HVAC notes warranty coverage up to three years advertised. Next HVAC lists free estimates for installations and repairs. San Francisco's cool, foggy climate increases ventilation needs; their ventilation offering aligns with that local concern. Strengths:
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| 6 | AAround The Clock HVAC | 77 | 4.9 (245+) | ||
Editorial: Central AC replacement is the primary service Around The Clock HVAC reports. The business lists a San Francisco address in ZIP 94112. The company appears in the local Google Maps pack, aiding search visibility. San Francisco's cool, coastal summers reduce heavy cooling load demands versus inland areas. Strengths:
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| 7 | SSan Francisco Expert Heating and Air | 73 | 4.9 (65+) | 29+ | |
Editorial: Ventilation work: San Francisco Expert Heating and Air lists ERV/HRV ventilation installation. Emergency response: the company reports same-day service availability. Company tenure: San Francisco Expert Heating and Air has 25+ years serving local homes. Service offering notes energy-efficient HVAC choices and ventilation on its website. Strengths:
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| 8 | AAssociated Heating of San Francisco | 66 | 4.8 (30+) | 72+ | |
Editorial: Associated Heating of San Francisco lists furnace repair for many gas-fired systems. The company notes repairs/diagnostic at $190 per hour, one hour minimum. Associated Heating says estimates for equipment replacements are free. San Francisco's older housing stock and coastal dampness make timely furnace service important. Strengths:
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| 9 | AAir Flow Pros Heating and Air Conditioning | 65 | 4.8 (45+) | Blower & Inducer Motor Repair | |
Editorial: Furnace repair and diagnostics are highlighted across their service pages. The website states 24/7 emergency response availability. Air Flow Pros lists financing options for larger repairs or replacements. The company describes itself as family-owned, with Bay Area service focus including San Francisco specifics. Strengths:
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| 10 | SSan Francisco Heating & Air Conditioning Services | 65 | 4.8 (30+) | ||
Editorial: Their Google rating is 4.8/5.0 from 31 reviews. The business lists an address in the Inner Mission at 690 Andover Street. San Francisco's mild, damp winters can accelerate corrosion on older furnace components. Local presence can matter for rapid dispatch and permit familiarity. Reviewers flag:
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| 11 | IInner Sunset Top Heating and Air | 64 | 4.9 (30+) | ||
Editorial: Inner Sunset Top Heating and Air lists certified technicians on its website. The company states it performs heat pump service and furnace work. San Francisco's coastal fog and mild summers often favor efficient heat pump solutions. The website states a focus on precision, punctuality, and professionalism. More: when to choose, when to consider alternativesConsider alternatives if:
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| 12 | GGalaxy Heating & Air Conditioning | 63 | 4.7 (25+) | 17+ | NATE-Certified Shop |
Editorial: Galaxy lists furnace repair and diagnostics with specific diagnostic workflows. The company advertises NATE-certified technicians and manufacturer authorizations. Galaxy has served the Bay Area since 2009 and notes 15+ years of local experience. Their site advertises same-day and 24/7 emergency response for San Francisco's cold snaps. Strengths:
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| 13 | AAlpha HVAC Repair San Francisco | 62 | 5.0 (10) | ||
Editorial: Alpha HVAC Repair San Francisco states HVAC repair is their core service. The business operates from 288 Sanchez Street in the Mission District. Ten Google reviews suggest a small, local client base. San Francisco's mild, marine-influenced climate often prioritizes ventilation balance and efficient cooling strategies. Reviewers flag:
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| 14 | GGold HVAC Repair San Francisco | 62 | 5.0 (6) | ||
Editorial: Gold HVAC Repair San Francisco lists a Mission District address on 18th Street. The company publishes a website at goldhvacrepairsanfrancisco.com. Google Maps shows six customer reviews on its profile. The central San Francisco location supports access across dense urban neighborhoods. Reviewers flag:
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| 15 | FFreon HVAC & Electrical Service - San Francisco | 61 | 4.8 (30+) | Gas Valve & Combustion RepairCommercial Furnace Repair | |
Editorial: Freon HVAC & Electrical Service lists furnace repair and diagnostics on its service pages. Strengths:
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| 16 | AAAA HVAC Repair San Francisco | 59 | 5.0 (6) | ||
Editorial: AAA HVAC Repair San Francisco lists furnace and HVAC repair from a Mission Street location. The company has a 5.0 Google rating from six reviews. The Mission Street address places them inside San Francisco city limits. San Francisco's mild winters still require reliable furnace checks for older homes. Reviewers flag:
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| 17 | HHorizon HVAC Repair San Francisco | 56 | 5.0 (4) | ||
Editorial: Horizon HVAC Repair San Francisco focuses on residential HVAC repair and maintenance. The business lists a storefront at 740 York Street in San Francisco. Four Google reviews support recent customer activity on the listing. Serves neighborhoods across central San Francisco, where coastal fog raises indoor moisture concerns for HVAC systems. Reviewers flag:
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Typical Furnace Repair costs in San Francisco, CA (2026)
Last updated
Estimated ranges for San Francisco, CA. Actual cost varies with home size, equipment, and scope — always request a written quote for your job.
| Service | Typical range |
|---|---|
| Furnace service call / diagnostic fee | $95–$250 |
| Flame sensor cleaning / replacement | $100–$315 |
| Hot surface igniter replacement (installed) | $190–$565 |
| Furnace gas valve replacement (installed) | $375–$940 |
| Draft inducer motor replacement (installed) | $375–$1,000 |
| Furnace control board replacement (installed) | $500–$1,150 |
| Heat exchanger replacement (repair-vs-replace inflection) | $1,250–$4,400 |
| Emergency / after-hours no-heat service premium | $190–$630 |
Nearby California furnace repair pricing: Anaheim · Bakersfield · Chula Vista
See broader context: Furnace Repair pricing in California · Furnace Repair pricing nationwide
What tests and data determined these Furnace Repair recommendations for San Francisco?
This guide evaluated 17 furnace repair providers serving San Francisco using Google Maps, provider websites, and BBB/CSLB records to compare Google review counts and ratings, emergency availability, warranty and pricing signals, and stated years in business.
- Magic Plumbing Heating & Cooling shows 4.9/5.0 with 1,915+ reviews, according to Google Maps data.
- Cabrillo Plumbing, Heating & Air reports 65+ years in business and 24/7 emergency availability, per BBB records.
- Heating And Air Experts lists flat-rate pricing and Diamond Certified status, per the provider's published claims.
- Next HVAC and Appliance repair notes a 3-year labor warranty and EPA certification, per the provider's listing.
- Galaxy Heating & Air Conditioning is NATE certified and a manufacturer dealer, according to its profile and Google Maps data.
Compare the specific signals that matter most to the job: response window, warranty length, technician certifications, and clear pricing disclosures.
How do I choose a Furnace Repair Company in San Francisco?
- Verify license and business age via state records and BBB entries.
- Compare Google review counts and recent rating trends.
- Confirm emergency response terms and any overtime charges.
- Request written warranty and labor terms before scheduling.
- Check for certifications like NATE or manufacturer-dealer status.
5 Furnace Repair headaches San Francisco residents often face
The most common furnace problems in San Francisco stem from damp, foggy coastal air and older, stacked-flat buildings that stress aging systems. Coastal humidity corrodes components, mild but persistent chill drives short, frequent cycles, and retrofit constraints in older flats create venting and airflow issues that reveal themselves in winter.
- Corroded burners and controls. Salt-laden fog and persistent coastal humidity in San Francisco accelerate corrosion on burners, control panels, and electrical contacts, causing intermittent failures and safety shutoffs.
- Short cycling and thermostat hunting. Mild San Francisco temperatures with large day-night swings make furnaces cycle on and off frequently, which raises wear and can trip safety limits on older systems.
- Condensation and heat-exchanger moisture. Foggy, humid nights encourage condensation inside heat exchangers and flue paths in San Francisco homes, increasing corrosion risk and promoting soot or scale buildup.
- Pilot, ignition, and burner sooting. Marine air carries fine particulates that foul pilots and burners in San Francisco furnaces, leading to ignition failures and reduced combustion efficiency.
- Duct and venting problems in older stacked flats. Many San Francisco multi‑unit buildings have retrofit ducts and shared plenums that leak or backdraft, producing uneven heat and raising combustion‑safety concerns when backpressure occurs.
How San Francisco’s population density and Title 24 rules shape Furnace Repair choices
Foggy, humid coastal air and dense multiunit housing make furnace repair San Francisco, California more about corrosion control and safe venting. Title 24 compliance and stacked flats push owners toward technicians who balance efficiency upgrades with code‑aware vent repairs and emergency response capabilities.
Local condition → impact → provider capability
High population density and stacked flats. Shared walls and compact mechanical spaces increase cross-unit venting risks and access constraints. Evaluated providers show experience with retrofit venting solutions and Title 24–aware installations that reduce backdraft and meet permit requirements.
Coastal humidity and salt air. Persistent moisture accelerates burner and control corrosion, causing ignition failures and safety trips. Look for providers who perform corrosion-resistant replacements and document equipment condition during inspections.
Strict Title 24 energy rules. Tight efficiency and ventilation standards affect repair scope and required upgrades. Many evaluated technicians carry NATE certification and dealer authorizations, and can recommend furnace-type replacements that align with Title 24 compliance.
Demand for quick response. Frequent short cycling in San Francisco homes raises urgent repair needs. About one-third of shortlisted companies advertise emergency service availability, which helps with after-hours safety inspections and rapid fixes.
How do San Francisco homeowners verify a Furnace Repair contractor before hiring?
- How do I get a quote from these furnace repair companies?
- Submit one request on this page and we send it to the vetted furnace repair pros in San Francisco, CA listed here. They send quotes back — no obligation.
- What does furnace repair service typically run in San Francisco, CA?
- Emergency / after-hours no-heat service premium typically runs $190–$630, and furnace service call / diagnostic fee runs $95–$250 in San Francisco, California. See the Furnace Repair pricing table on this page for the full per-service breakdown.
- Do contractors need a CSLB license?
- Yes. Contractors performing furnace repair or replacement must hold an active California Contractors State License Board (CSLB) classification that covers HVAC or heating work. Verify the license number on the CSLB website and confirm it matches the business name and the technician assigned. Also check for current bonding and insurance information and any disciplinary history listed by CSLB.
- Is a Title 24 energy compliance review required for furnace replacements in San Francisco?
- Yes. Furnace replacements that affect efficiency or ducting commonly trigger Title 24 requirements and may require documentation at permitting. Ask providers whether the scope needs Title 24 compliance checks and who prepares the required forms. Keep written notes on recommended efficiency upgrades and any code-driven measures the contractor plans to submit with permits.
- When is the busiest season for furnace repair in San Francisco and how does that affect scheduling?
- Winter and the foggiest months drive higher demand for furnace repair, which can extend lead times for non-emergency work. Book preventive service before the foggy season to avoid waits. In neighborhoods like Inner Sunset, Mission, and Noe Valley, scheduling two to four weeks ahead is common for non-urgent tune-ups during peak season.
- What documentation should a homeowner ask for after a furnace tune-up or repair?
- Request a written service report that lists diagnostics, parts replaced, safety checks performed, and any efficiency or venting recommendations. The report should note Title 24 implications when relevant. Keep the technician's license number and a dated invoice for warranty and permit records. This helps with future resale questions and municipal inspections.
- How can homeowners vet a specialist for heat-exchanger, igniter, or blower repairs?
- Look for technicians who document repeated experience with the specific component and who can show parts-brand familiarity. Ask for examples of recent jobs and whether the provider offers warranty coverage (advertised) on parts and labor. Review Google feedback from local neighborhoods like the Castro and Marina for recurring positive notes about similar component repairs.
- What signs indicate a cracked heat exchanger that needs professional evaluation in San Francisco homes?
- Persistent soot, unusual combustion odors, or repeated pilot failures often indicate a heat exchanger issue and need immediate evaluation. Because stacked flats and tight venting can worsen backdraft risks, request a combustion and CO check when these symptoms appear. Have the technician document measurements and recommended next steps in writing.
- Do commercial or multiunit furnace repairs in San Francisco require different permits or contractors?
- Yes. Commercial and multiunit work often involves additional Title 24 documentation and building-department permits beyond single-family repairs. Look for contractors with multiunit experience and familiarity with San Francisco permitting. Confirm who files permits and who will coordinate any required inspections with the city building department before work starts.
- Are there special considerations for oil-fired furnaces or older systems in San Francisco neighborhoods?
- Older oil-fired systems and legacy furnaces commonly need corrosion checks and venting upgrades in coastal microclimates. Ask whether the contractor inspects for burner corrosion, sealed combustion feasibility, and safe fuel storage. In dense areas like Inner Sunset and Noe Valley, technicians should account for access constraints when planning repairs or replacement work.