Fast, Reliable Heating & Furnace Across West Hills
Heating & furnace repair in West Hills typically costs $150–$700 for repairs, $3,500–$7,500 for full replacement, and most service calls are completed same-day. Our Heating & Furnace team knows West Hills’s 1960s–80s ranch homes inside out, from the valley-floor tracts near Fallbrook Avenue to the hillside rebuilds off Valley Circle. We’ve spent 16 years tracking how the Santa Susana Mountains trap heat here, turning attics into 150°F ovens that destroy ductwork and crack heat exchangers on equipment that would last decades in cooler coastal zones. If your furnace is cycling on and off, blowing cold air, or your carbon monoxide detector is chirping, call (855) 467-1888. Jason Trent, our owner and field supervisor, still rides to West Hills calls himself.
Why Stonegate Heating & Air California Is West Hills’s Preferred Heating & Furnace Company
West Hills homeowners don’t have patience for dispatchers who can’t find their neighborhood or technicians who’ve never seen a gravity furnace. We’ve earned 499 verified reviews at a 4.7-star average across 16 years in California’s HVAC market, and a healthy share of those come from repeat customers in 91307 and 91308 who’ve watched us replace everything from original 1970s Rheem units to modern Carrier systems in Woolsey Fire rebuilds.
Jason Trent doesn’t run this company from a back office. He holds the title of Field Supervisor, meaning he’s physically on job sites, including right here in West Hills. That matters when you’re deciding whether a cracked heat exchanger on a 1978 furnace justifies repair or if the obsolete gas valve makes replacement the only smart path. An absentee owner can’t make that call. Jason can, and does.
We’re factory-trained or experienced on nine major brands: Carrier, Trane, Lennox, Goodman, Rheem, York, Daikin, Bryant, and American Standard. Whatever brand is in your West Hills garage or utility closet, we’ve worked on it. No “we don’t service that brand” dead ends.
From a single-room mini split to a full commercial system, our scope removes the need to vet multiple contractors. Emergency HVAC is available. Same-day response to West Hills is standard, not a premium upsell.
Our Heating & Furnace Services in West Hills
Furnace Repair
Most West Hills furnace repairs fall between $150–$700. The valley’s extreme thermal cycling — 150°F attic summers followed by 40°F winter mornings — fatigues limit switches, blower motors, and ignitors faster than in coastal LA. We stock common parts for Carrier, Trane, Lennox, and Rheem systems to avoid ordering delays that leave you without heat. If your furnace is short-cycling or blowing lukewarm air on a cold morning near Roscoe Boulevard, we’ll diagnose it fast and give you an upfront quote before touching a tool.
Furnace Replacement
Full furnace replacement in West Hills runs $3,500–$7,500 depending on AFUE rating, ductwork condition, and whether we need to reconfigure for a modern forced-air system. This is where our local knowledge pays off. West Hills’s 1960s–80s ranch homes often retain original gravity furnaces with asbestos-lined duct boots and manual gas valves that modern ignitors cannot interface with, making replacement the only path when heat exchangers crack. The Woolsey Fire rebuild zone added newer construction with Title 24-compliant equipment, but the older valley-floor homes still run original undersized systems. Two completely different conversations, and we’ve handled both within the same ZIP code.
Furnace Tune-Up
Annual tune-ups in West Hills cost $80–$200 and typically catch the failure modes that turn into $700 repairs or $7,500 replacements. We inspect heat exchangers with cameras, test gas pressure, and check for duct collapse in attics that routinely exceed 150°F. A tune-up in October, before the first Santa Ana wind event funnels cold air through the passes, is the best money you’ll spend on your heating system.
Heat Exchanger Inspection & Replacement
Cracked heat exchangers are the most dangerous failure we find in West Hills, and they’re epidemic here. The 150°F attic summers embrittle steel beyond what manufacturer fatigue tests assumed. Last winter, we visited a ranch home on Valley Circle near the Santa Susana foothills where the original 1978 Rheem gas furnace had a cracked heat exchanger that was spewing CO into the attic. The homeowner had been patching it with furnace tape for years, but the heat-aging had won. We quoted a full replacement with a Carrier 96% AFUE and new flex duct — the old rigid trunk was collapsed six feet in from the register. Heat exchanger replacement alone runs $800–$2,500 when feasible, but on pre-1990 furnaces in West Hills, we usually recommend full replacement for safety and parts availability.
Gas Valve & Ignitor Repair
Original gas valves and standing-pilot ignitors on 1960s–80s West Hills furnaces are increasingly discontinued. When we can source compatible valves, repair runs $150–$400. When we can’t, we don’t waste your time hunting eBay for obsolete parts. We’ll tell you straight that replacement is the only path, and we’ll size a modern system to your home’s actual heat load, not the original builder’s guess from 1972.
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 West Hills
We maintain active familiarity with nine leading HVAC brands: Carrier, Trane, Lennox, Goodman, Rheem, York, Daikin, Bryant, and American Standard. For West Hills customers, this means we don’t need to order parts blind or subcontract to a “factory authorized” shop across the Valley. Our trucks carry common ignitors, gas valves, blower motors, and limit switches for Carrier, Trane, and Lennox systems, which represent the majority of installed base in 91307 and 91308. When your furnace quits on the first cold night of the season, that parts availability is the difference between same-day heat and a hotel bill.
Common Heating & Furnace Problems We See in West Hills Homes
- Heat exchangers crack from thermal stress. Decades of 150°F+ attic temperatures on original 1970s–80s furnaces fatigue steel beyond repair limits. Carbon monoxide leaks into living spaces through compromised return plenums, often undetected until a tune-up reveals the damage.
- Original gas valves and ignitors are discontinued. A $150 repair on newer equipment becomes impossible on pre-1990 systems. We see this constantly in the ranch tracts near Fallbrook and Platt, where gravity furnaces outlast their parts supply by a decade.
- Flex-duct liners collapse from heat-aging. Starved of return air, furnaces trip limit switches on cold mornings. Homeowners think they have a furnace problem; often it’s a duct problem hiding six feet past the attic access panel.
- Santa Ana wind events spike heating loads unexpectedly. Autumn cold snaps funnel through the Santa Susana passes just as summer systems are winding down, catching poorly maintained furnaces at their most vulnerable moment.
Pricing for Heating & Furnace in West Hills, CA
| Service | Price Range in West Hills |
|---|---|
| Furnace Repair | $150–$700 |
| Furnace Replacement | $3,500–$7,500 |
| Furnace Tune-Up | $80–$200 |
| Heat Exchanger Replacement (when feasible) | $800–$2,500 |
| Gas Valve / Ignitor Repair | $150–$400 |
What moves you within these ranges? Ductwork condition is the big variable in West Hills. A furnace replacement on a home with intact flex duct is straightforward. A home with collapsed attic ductwork needs reconfiguration, adding labor and material. Brand selection matters too: a Carrier 96% AFUE two-stage system costs more upfront than a single-stage Goodman, but the operating savings add up over Los Angeles County’s long heating seasons. We don’t upsell. We size to your home’s heat load, explain the options, and let you decide. Estimates are free. Call (855) 467-1888 for an exact quote on your specific system.
We Also Serve Cities Near West Hills
Our service radius covers the full western San Fernando Valley and adjacent communities. We regularly run calls to Canoga Park for commercial HVAC on the industrial strips, Woodland Hills for hillside homes with similar heat-trapping geography, Calabasas for newer construction with stricter Title 24 requirements, and Chatsworth for ranch homes with comparable aging stock to West Hills. Wherever you are in the west Valley, the same owner-supervised team shows up.
Serving West Hills, CA — Our Local Coverage Area
We’re based in the West Hills 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 West Hills
No. A 1978 furnace in West Hills is past safe economic repair in almost every case we’ve seen. Original heat exchangers are fatigued from decades of 150°F attic summers, replacement parts are discontinued, and the efficiency penalty of a 60–70% AFUE unit costs you hundreds per year in gas bills. We recommend proactive replacement before a mid-winter failure forces an emergency decision. Call (855) 467-1888 for a free replacement estimate — we’ll inspect your ductwork and give you real numbers.
Generally no. Manual gas valves, asbestos-lined duct boots, and standing-pilot assemblies for gravity furnaces have been out of production for 20+ years. We’ve searched salvage yards and specialty suppliers for West Hills customers, but the success rate is low enough that we don’t promise it. When we can’t source safe, compatible parts, we recommend replacement with a modern forced-air system sized to your home’s actual heat load. The consultation is free.
Yes. Woolsey Fire rebuilds in West Hills’s hillside zones are subject to current Title 24 energy standards, which mandate minimum AFUE ratings, duct leakage testing, and often heat pump readiness. Your original 1970s system won’t comply, and your contractor should have spec’d compliant equipment during rebuild. If you’re unsure whether your new install meets code, we can audit the system and document compliance. Jason Trent has supervised Title 24 verification for multiple West Hills rebuilds.
Intermittent pilot failure usually indicates a failing thermocouple, draft issue from collapsed ductwork, or gas pressure fluctuation. In West Hills specifically, we see collapsed flex-duct liners in 150°F attics create negative pressure that blows out pilots when the blower kicks on. It’s not always a gas valve problem. We diagnose the root cause rather than replacing parts blindly. Call (855) 467-1888 — we’ll check your duct integrity along with the ignition system.
Carrier and Trane both build furnaces with heat exchanger designs rated for extreme thermal cycling, and we’ve had strong results with both in West Hills’s conditions. The more important factor is proper ductwork: even the best furnace fails prematurely if it’s starving for return air through collapsed flex duct. We always inspect attic duct runs before recommending a brand, because the installation environment here is harsher than the equipment was originally designed for. Schedule a free assessment and we’ll match brand and model to your specific home.
Written by Jason Trent, Owner and Field Supervisor at Stonegate Heating & Air California, serving West Hills and the western San Fernando Valley since 2008.