Heating & Furnace in San Rafael — Same-Day Service, Done Right the First Time

Fast, Reliable Heating & Furnace Across San Rafael

Heating and furnace repair in San Rafael typically runs $150–$700 for standard fixes, while full furnace replacement in the city ranges from $3,500–$7,500 depending on your home’s existing infrastructure. Most San Rafael homeowners get same-week appointments, and our Heating & Furnace team regularly handles the unique challenges of valley-heat properties and mid-century slab homes that dominate the 94903 ZIP.

Call (844) 560-6978

We’re Crestview Heating & Air California, and we’ve spent nearly two decades working on the exact furnace problems San Rafael throws at us. From the original floor furnaces buried in Terra Linda’s 1960s slab foundations to the cramped crawlspaces of pre-war Gerstle Park, this city’s housing stock demands more than textbook HVAC knowledge. San Rafael’s inland valley geography — running 15–20°F hotter than coastal Marin in summer, yet dipping to genuine frost in winter — means your heating system works harder and differently than identical equipment just miles west in Sausalito. When your furnace fails on a January morning, you need technicians who understand that a “standard” replacement might require a complete system redesign. Call (844) 560-6978 for a free estimate.

Why Crestview Heating & Air California Is San Rafael’s Preferred Heating & Furnace Company

Our reputation in San Rafael was built one job at a time. We’ve got 250+ customer reviews averaging 4.8 stars, and a significant share of those come from repeat calls across the 94901 and 94903 ZIP codes. Homeowners in Terra Linda, Gerstle Park, and the acreage properties near Lucas Valley know our trucks because they’ve seen us return for annual tune-ups, not just emergency breakdowns.

Owner Marcus Feldman still serves as Service Manager, which means the person answering your questions on the phone is the same person ensuring your job gets done right. No dispatch center. No rotating subcontractors. When we tell you a floor-furnace replacement in a 1961 Las Gallinas Avenue ranch requires a ductless redesign, that recommendation comes from Marcus’s direct field experience, not a sales script.

Response time matters in San Rafael’s valley frost. We prioritize heating calls during cold snaps because we know this city’s older housing stock loses heat faster than modern construction. Our familiarity with San Rafael’s permit requirements and PG&E gas-line configurations also means fewer delays once we’re on-site.

Our Heating & Furnace Services in San Rafael

Furnace Repair

San Rafael furnace repair calls spike every November when homeowners first fire up systems that sat idle through the foggy summer. In Terra Linda’s slab-ranch neighborhoods, we regularly find cracked heat exchangers in original floor furnaces — decades of thermal stress from embedded concrete installations cause metal fatigue that standard wall-unit technicians rarely encounter. Repair costs in San Rafael typically fall between $150–$700, though homes with corroded gas valves or failed ignitors on older Rheem or Goodman units sometimes land at the higher end. We stock common parts for Trane, Lennox, and Rheem systems to minimize return trips.

Furnace Replacement

This is where San Rafael gets interesting. In most cities, “furnace replacement” means swapping a forced-air unit for a newer model. In Terra Linda’s 94903 ZIP, it often means discovering there’s no ductwork to connect a new furnace to. Last fall, we arrived at a 1961 ranch on Las Gallinas Avenue for what the homeowner described as a “furnace replacement.” What we found was a 55-year-old floor furnace embedded in the slab with no ductwork whatsoever. We worked with the owner to design a ductless heat-pump system with hyper-heat capability, ensuring reliable heating through San Rafael’s valley frost without tearing up the foundation to run ducts. Full replacement with ductless redesign runs $3,500–$7,500 in San Rafael, depending on zones and electrical capacity.

Furnace Tune-Up

Annual furnace tune-ups in San Rafael cost $80–$200 and pay for themselves in extended equipment life, especially for original systems in mid-century homes. Our tune-up checklist includes combustion analysis, gas-pressure testing, and heat-exchanger inspection — critical for floor furnaces where cracks can leak carbon monoxide into living spaces. We also check MERV filter compatibility; San Rafael’s fall Diablo wind events funnel wildfire smoke from Sonoma County directly into the valley, and many homeowners are upgrading filtration during routine maintenance.

Heat Exchanger Inspection & Replacement

Cracked heat exchangers are the most serious safety issue we find in San Rafael’s older furnace stock. Terra Linda’s original floor furnaces and wall units from the 1950s–70s develop thermal stress cracks that vent combustion gases into occupied spaces. We use combustion analyzers and visual borescope inspection to verify integrity. Replacement is sometimes possible, but in many San Rafael homes — especially slab ranches with embedded units — a cracked exchanger means full system redesign. We never patch or ignore this failure; it’s a complete replacement or nothing.

Ignitor Replacement & Gas Valve Repair

Hot-surface ignitors fail every 3–5 years in San Rafael’s cycling climate, and gas valves corrode in the damp crawlspaces of Gerstle Park’s pre-war homes. Acreage properties near Lucas Valley face a third failure mode: long gas-line runs subject to tree-root damage and corrosion, causing intermittent supply that mimics valve failure. We diagnose before replacing, because a new gas valve won’t fix a crushed underground line. Ignitor replacement typically runs $150–$400; gas valve repair or replacement ranges $300–$700 depending on access and line condition.

Trusted Brands We Service in San Rafael

Your system, our specialty. We maintain factory-trained compatibility across nine major brands, and for San Rafael customers we regularly stock parts for Trane, Lennox, Goodman, and Rheem — the four brands we encounter most often in this city’s 1960s–90s housing stock. Whether you’ve got a 40-year-old Lennox floor furnace in Terra Linda or a 15-year-old Trane forced-air system in the Dominican neighborhood, we don’t tell you “we don’t work on that.” Our parts inventory and brand knowledge mean faster turnaround on repairs, fewer return trips, and no waiting for special orders on common failures.

Common Heating & Furnace Problems We See in San Rafael Homes

• Cracked heat exchangers in Terra Linda floor furnaces. Decades of thermal cycling in embedded concrete slabs cause metal fatigue that standard wall-unit technicians rarely diagnose correctly. We inspect with borescopes and combustion analyzers, and we won’t let a cracked unit keep running.
• Knob-and-tube wiring blocking furnace upgrades in Gerstle Park. Pre-war Craftsman and Victorian homes in 94901 often have electrical systems that can’t handle a modern furnace blower’s load. We coordinate with licensed electricians for panel upgrades before installation, so you’re not mid-project when the inspector stops everything.
• Intermittent gas supply on Lucas Valley acreage properties. Long underground gas lines in unincorporated areas suffer root damage and corrosion that mimics valve failure. We pressure-test the full line before replacing components you don’t need.
• Short-cycling during valley cold snaps. San Rafael’s rapid temperature swings — 30°F mornings jumping to 60°F afternoons in winter — cause oversized or poorly calibrated furnaces to cycle on and off excessively, wasting fuel and wearing components. We size and tune for actual local conditions, not textbook calculations.

Pricing for Heating & Furnace in San Rafael, CA

We Also Serve Cities Near San Rafael

Our service radius covers all of central Marin County. We regularly handle heating calls in San Anselmo, Fairfax, Lucas Valley-Marinwood, and Kentfield — each with its own housing-stock quirks, from San Anselmo’s hillside drainage issues to Kentfield’s larger estate properties. If you’re in a neighboring city and found this page because your home shares San Rafael’s mid-century slab-foundation challenges, we can help there too.

FAQs — Heating & Furnace in San Rafael