Fast, Reliable Heating & Furnace Across Calabasas
Heating and furnace repair in Calabasas typically runs $150–$700 for standard repairs, while full furnace replacement in this market averages $3,500–$7,500. Most Calabasas homes need service within hours, not days, when valley temperatures drop into the mid-30s on winter nights. We’re Redwood Heating & Air, and our Heating & Furnace team makes the drive from our San Diego base to serve Calabasas properties with the urgency those cold snaps demand. Call (844) 875-9451 for a free estimate.
We’ve worked in enough Calabasas homes to know the local rhythm. The gated communities along Park Granada and Mulholland Highway, the sprawling estates in The Oaks, the hillside builds above Calabasas Road. Each has its own furnace story, usually involving an original system from the 1990s that’s finally showing its age. Gregory Hahn founded this company and still leads every technical decision, bringing 13 years of master-technician experience to every Calabasas job. That means owner-level accountability, not a dispatcher sending whoever’s available.
Why Redwood Heating & Air San Diego Is Calabasas’s Preferred Heating & Furnace Company
Our reputation in Calabasas was built one job at a time. We’ve replaced furnaces in The Oaks at Calabasas, diagnosed gas valve failures in Calabasas Park Estates, and tuned up systems throughout the 91302 and 91372 ZIP codes. Homeowners here research before they call, and they find our 428 verified reviews averaging 4.6 stars across 13 years of continuous operation.
Response time matters when your furnace quits on a 38°F January night. We prioritize Calabasas emergency calls and arrive prepared. The Santa Monica Mountains create conditions here that technicians from coastal LA consistently misread. Calabasas winter nights drop 20–30°F lower than Malibu, just 10 miles west. That thermal load difference changes everything about furnace sizing, cycling patterns, and failure modes. We’ve seen it. We factor it in.
Gregory Hahn holds a Master Technician designation, and that credential rides to your door. Not in a corporate office. On the truck. For Calabasas homeowners who’ve endured rushed repairs or one-brand-only dealers, that direct expertise is the difference between a temporary patch and a proper fix.
Our Heating & Furnace Services in Calabasas
Furnace Repair
Furnace repair in Calabasas runs $150–$700 depending on the component and accessibility. The most common calls we get here involve ignitor failures in oversized single-stage units and gas valve problems from rodent activity in attic installations. Because Calabasas sits in an inland valley trapped by the Santa Monica Mountains, winter nights can drop into the mid-30s—cold enough that a single-stage furnace in a 5,000+ sq ft home often runs continuously to maintain 68°F, a thermal load far heavier than in nearby coastal cities where lows rarely dip below 50°F. That stress cracks ignitors and wears gas valves prematurely. We stock parts for Carrier, Bryant, and American Standard systems common in local 1990s builds, so most repairs finish same-day.

Furnace Replacement
Full furnace replacement in Calabasas typically costs $3,500–$7,500, with most large homes landing in the upper half due to zoning requirements and HOA-mandated equipment screening. Original systems in Calabasas’s 1980s–2000s housing stock are now 20–40 years old and entering mass replacement cycles. These sprawling, multi-level floor plans often need multi-zone redesigns to heat efficiently. Last winter we replaced the entire heating system in a 6,200 sq ft Tuscan-style home in The Oaks at Calabasas. The original 1998 furnace had a cracked heat exchanger from years of thermal stress in the valley’s cold nights; we installed a two-stage, variable-speed Carrier Infinity gas furnace with a SEER-rated condensing unit and a smart thermostat integrated into the home’s Crestron system, all concealed behind custom cabinet doors per the HOA’s CC&Rs. That job exemplifies what Calabasas properties demand: technical precision plus architectural discretion.

Furnace Tune-Up
A furnace tune-up in Calabasas costs $80–$200 and should happen annually, ideally before November. We inspect heat exchangers for stress cracking, test gas pressure and combustion, clean burners, and check airflow across multi-zone ductwork. In Calabasas’s gated communities, we also verify that attic installations haven’t attracted rodents, a recurring issue in The Oaks and Calabasas Park Estates where tile roofs and mature landscaping provide access. Catching gas valve corrosion or ignitor wear early prevents mid-winter failures when every HVAC company in LA is slammed.

Heat Exchanger Inspection & Replacement
Heat exchanger work in Calabasas ranges $150–$700 for repair or replacement of the component itself, though full system replacement is often more economical when the unit is past 20 years. Cracked heat exchangers in original 1980s–1990s Carrier and Bryant furnaces are epidemic here due to decades of high-thermal-cycle stress from cold valley nights. A cracked exchanger is a genuine safety hazard, carbon monoxide risk. We never patch and pray. If we find a crack, we show you, explain your options, and recommend replacement when the math makes sense. Gregory Hahn’s Master Technician training means we diagnose this correctly the first time, not after two return visits.

Gas Valve Repair
Gas valve repair in Calabasas runs $150–$700. Rodent damage to gas valves in attic installations is a distinctively local problem, driven by the mature oak and sycamore canopies in gated communities and the warm-season access points tile roofs create. We see this regularly in The Oaks and Calabasas Park Estates. A failing gas valve may cause intermittent ignition, short cycling, or a complete no-heat condition. We test manifold pressure, check for downstream leaks, and replace with OEM-spec components matched to your brand.

Ignitor Replacement
Ignitor replacement in Calabasas costs $150–$700. Frequent cycling in oversized single-stage furnaces, common in unzoned 4,000+ sq ft homes, burns through hot surface ignitors every 3–5 years instead of the typical 7–10. We see this pattern constantly in Calabasas’s 1990s-era builds where original contractors spec’d one massive furnace for three stories. Upgrading to a two-stage or zoned system often pays for itself in ignitor and gas valve savings alone.

What happens when you call
- 1
A real person answersNo phone trees — you reach a local pro.
- 2
You get an upfront price rangeHonest numbers before anyone is dispatched.
- 3
A background-checked tech heads outLicensed & insured, dispatched right away.
- 4
You approve before work beginsNothing starts until you say go.
Trusted Brands We Service in Calabasas
We service your brand. Our technicians are factory-trained or experienced across nine major HVAC brands: Carrier, Trane, Lennox, Goodman, Rheem, York, Daikin, Bryant, and American Standard. In Calabasas, we most commonly encounter Carrier and Bryant systems from the 1990s building boom, plus newer Daikin and American Standard installations in renovated estates. We stock high-velocity filters, ignitors, and gas valves for these brands locally, which means faster turnaround on Calabasas repairs. No waiting a week for a part that should be on the truck. From a single mini-split to a full commercial system, we diagnose right the first time because we’ve worked on the equipment your home actually has.
Common Heating & Furnace Problems We See in Calabasas Homes
- Cracked heat exchangers in original Carrier/Bryant furnaces. The 1980s–1990s building era left Calabasas with thousands of these units. Decades of cold-valley thermal cycling fatigues the metal. We inspect with cameras and combustion analyzers, never guesswork.
- Rodent-damaged gas valves in attic installations. The Oaks, Calabasas Park Estates, and similar gated communities have mature tree cover and tile roof access points that coastal communities lack. We find chewed wiring and corroded valve solenons regularly.
- Ignitor degradation from oversized single-stage furnaces. A 120,000 BTU furnace heating a 6,000 sq ft three-story home without zoning cycles on and off constantly. That thermal shock kills ignitors early. The fix isn’t just another ignitor; it’s proper staging or zoning.
- Smart-home integration failures. Calabasas’s high-end market demands Crestron, Control4, and Nest integration. Generic HVAC contractors often wire these poorly, causing communication errors that look like equipment failure. We speak both languages: HVAC and home automation.
Pricing for Heating & Furnace in Calabasas, CA
Honest pricing for Calabasas’s market:
| Service | Typical Range in Calabasas |
|---|---|
| Furnace Repair | $150–$700 |
| Furnace Replacement | $3,500–$7,500 |
| Furnace Tune-Up | $80–$200 |
| Heat Exchanger (component) | $150–$700 |
| Ignitor Replacement | $150–$700 |
| Gas Valve Repair | $150–$700 |
What moves you within these ranges? System age, accessibility (attic vs. closet), HOA-mandated custom screening or cabinetry, and whether your home needs zoning modifications. A straight swap in an accessible garage runs lower. A concealed installation behind millwork in The Oaks with new low-voltage wiring for smart-home integration runs higher. We provide upfront pricing before any work begins. Estimates are free. Call (844) 875-9451.
We Also Serve Cities Near Calabasas
Our service radius covers the full west San Fernando Valley and adjacent canyon communities. We regularly dispatch to Woodland Hills, West Hills, Topanga, and Canoga Park. The same mountain-barrier thermal dynamics that affect Calabasas also shape heating needs in Woodland Hills and West Hills, while Topanga’s coastal-adjacent microclimate presents different challenges entirely. Wherever you are, we bring the same master-technician standard Gregory Hahn established 13 years ago.
Serving Calabasas, CA — Our Local Coverage Area
We’re based in the Calabasas 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 — Heating & Furnace in Calabasas
Yes, nearly every gated community in Calabasas requires advance HOA architectural approval for exterior equipment changes. The dense concentration of gated HOA communities in Calabasas means nearly every condenser replacement requires advance HOA architectural approval and custom equipment screening or landscaping to satisfy CC&Rs — a sightline-and-paperwork layer that adds days to jobs and catches technicians from neighboring Valley cities off guard. We handle this routinely. We submit equipment cut sheets, noise specs, and screening plans before we order anything. Call (844) 875-9451 and we’ll walk you through your specific HOA’s process.
The Santa Monica Mountains place Calabasas in a pronounced inland heat sink where winter lows drop into the mid-30s, while Malibu stays above 50°F. That 20°F difference forces longer run-times and more thermal cycles. A furnace in Malibu might cycle 3 times on a January night. In Calabasas, the same unit runs continuously. The stress accumulates in cracked heat exchangers, fatigued ignitors, and worn gas valves. We size and maintain systems for this reality, not coastal assumptions.
A 5,000 sq ft Calabasas home typically needs 100,000–140,000 BTU of heating capacity, but raw BTU rating is only half the story. Because Calabasas winter nights drop into the mid-30s and these homes often have 20-foot ceilings, expansive glass, and minimal attic insulation by modern standards, we perform full Manual J load calculations. We’ve seen 6,000 sq ft homes where proper zoning with two 60,000 BTU two-stage furnaces outperforms a single 150,000 BTU brute. Bigger isn’t better; matched is better. Call for a free sizing assessment.
Yes, if your home is 4,000+ sq ft or has multi-level heating challenges. Two-stage furnaces run longer at lower output, eliminating the stop-start thermal shock that kills single-stage components in Calabasas’s cold-valley climate. The 6,200 sq ft The Oaks installation we completed last winter dropped from 8–10 cycles per hour to 2–3 continuous low-fire runs. The homeowner reported more even temperatures, lower gas bills, and no more 3 AM ignitor failures. For Calabasas’s large luxury homes, two-stage or modulating systems aren’t luxury; they’re durability.
Yes. We regularly integrate Carrier Infinity, Bryant Evolution, and Daikin systems with Crestron, Control4, Lutron, and Nest platforms. The Calabasas market demands this capability. Our field vignette from The Oaks — a Carrier Infinity with Crestron integration, concealed behind custom cabinetry — is representative work. We troubleshoot communication faults, upgrade firmware, and ensure your HVAC responds properly to automation scenes. Not every HVAC contractor understands both the refrigeration cycle and the control network; we do. Call (844) 875-9451 to discuss your specific integration.
Ready to get your Calabasas home heating properly? Call Redwood Heating & Air at (844) 875-9451 for a free estimate. Gregory Hahn or one of our master-technician-trained team will assess your system, explain your options in plain language, and provide upfront pricing before any work begins. 13 years, 428+ reviews, and owner-level accountability on every Calabasas job.
Written by Gregory Hahn, Owner at Redwood Heating & Air San Diego, serving Calabasas and surrounding communities since 2011.