Fast, Reliable Heating & Furnace Across Van Nuys
Van Nuys homeowners don’t have time for callbacks. When your furnace quits on a 35°F January night or your garage workshop heater won’t stay lit, you need someone who shows up with the right parts and knows how your house was built. We cover Van Nuys from the airport district to the Valley Glen border, and we stock gas valves, heat exchangers, and ignitors sized for the heavy-duty retrofits this area demands. Call (855) 467-1888 for a free estimate.
We’ve been driving these streets for 16 years. We know the post-war ranches on Kittridge, the low-rise apartments near Victory Boulevard, and the detached workshops tucked behind homes on the western edge. Van Nuys isn’t coastal LA. The San Fernando Valley floor bakes your attic to 150°F in summer and drops hard in winter. That thermal swing cracks heat exchangers and corrodes gas valves in ways that don’t happen in Santa Monica. You need a team that understands that difference before they open your furnace cabinet.
Why Stonegate Heating & Air California Is Van Nuys’s Preferred Heating & Furnace Company
Our reputation in Van Nuys was built one job at a time. Owner Jason Trent serves as Field Supervisor on projects across the San Fernando Valley, and that hands-on approach shows up in our numbers: 499 verified reviews at a 4.7-star average. Van Nuys customers specifically mention our one-trip completion rate and our refusal to walk away from complicated retrofits.
We respond to Van Nuys calls from our Sacramento-based dispatch, coordinating experienced technicians who know the local housing stock. That matters because a contractor who treats your 1960s ranch like a modern tract home will miss the extended flue runs, the undersized return plenums, and the attic heat gain that define furnace performance here.
Jason Trent personally reviews every furnace replacement plan for Van Nuys detached garages and workshop heaters. These aren’t standard installations. The wind patterns around standalone structures on the valley floor differ from single-wall construction, and flue backdrafting is a real risk if you don’t account for it. We’ve seen competitors install equipment that works fine in Sherman Oaks but fails in Van Nuys because they missed that detail.
Our Heating & Furnace team carries factory-trained experience on nine major brands. That means whatever furnace is sitting in your attic or garage right now, we don’t need to special-order parts or send you to another contractor.
Our Heating & Furnace Services in Van Nuys
Furnace Repair
A typical furnace repair in Van Nuys runs $150–$700. The most common calls we get from ZIP codes 91470, 91482, 91496, and 91499 involve gas valve corrosion from valley smog, ignitor failure after thermal cycling, and blower motors strained by restricted airflow through original flex duct. We stock the heavy-duty gas valves and extended flue components that Van Nuys’s detached workshop layouts require, so most repairs finish in a single visit.
Furnace Replacement
Furnace replacement in Van Nuys costs $3,500–$7,500 depending on whether we’re working in a conditioned closet or a 150°F attic retrofit. The housing stock here demands extra planning. We replaced a Carrier furnace in a 1960s ranch near Van Nuys Airport last November; the original wall heater had been retrofitted with flex duct running through a 150°F attic, so we upsized the gas valve and sealed every joint to overcome heat loss. The homeowner told us three other contractors had walked away because the job needed a one-trip solution. Jason Trent supervised that installation personally. We don’t walk away.
Furnace Tune-Up
A furnace tune-up in Van Nuys runs $80–$200 and pays for itself fast. We check gas pressure at the manifold, test for carbon monoxide around heat exchanger seams, and inspect flue draft in detached structures where wind exposure differs from the main house. Given the 25–35°F temperature swing between Van Nuys and coastal LA on any summer afternoon, your equipment works harder here. Annual maintenance catches the cracks and corrosion before they become January emergencies.
Heat Exchanger Inspection & Replacement
Heat exchanger failure is the most serious furnace problem we encounter in Van Nuys, and it’s directly tied to local conditions. The extreme thermal cycling between 35°F winter nights and 110°F summer days creates expansion stress that coastal climates don’t impose. A cracked heat exchanger can leak carbon monoxide into your living space. We perform combustion analysis and visual inspection with borescope cameras. Replacement requires matching the new exchanger to your existing blower and duct capacity, which in Van Nuys often means overcoming the static pressure losses from 1970s flex duct runs. This is not a generic swap.
Gas Valve Repair
Gas valve corrosion is a Van Nuys signature failure. Valley floor smog settles into low-mounted exhaust vents on furnaces installed in garages and crawl spaces, and the moisture combined with temperature swings eats the valve diaphragm. We carry replacement valves rated for the heavier BTU loads that extended flue runs and attic heat gain demand. Standard valves fail early here. We install the right ones.
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 Van Nuys
We work on Carrier, Trane, Lennox, and American Standard systems every week in Van Nuys, plus Goodman, Rheem, York, Daikin, and Bryant. Our parts inventory covers the gas valves, ignitors, and control boards most common to these brands in California installations. That stock matters for Van Nuys customers because a detached garage furnace with a failed gas valve on a Friday night isn’t a “order Monday” situation. We keep the heavy-duty components on the truck. From a single-room wall heater to a full commercial system, one team handles it.
Common Heating & Furnace Problems We See in Van Nuys Homes
- Gas valve corrosion from smog settling into low vents. Van Nuys’s valley floor location traps particulate matter that coastal areas flush away. Furnaces in garages and crawl spaces suck that moisture into the gas valve body, causing intermittent ignition or complete failure.
- Heat exchanger cracking from extreme thermal cycling. The 75°F annual swing between winter lows and summer highs in Van Nuys creates more expansion-contraction stress than moderate climates. We find hairline cracks in 15–20 year old furnaces that would have lasted 25+ years near the coast.
- Flue backdrafting in detached garages and workshops. Standalone structures on the Van Nuys valley floor experience wind patterns and pressure differentials that attached garages don’t. We’ve corrected multiple installations where the flue terminated too close to a roof ridge or under an eave that created a downdraft zone.
- Restricted airflow from original flex duct crammed into unconditioned attics. The 1950s–70s housing stock wasn’t built for central HVAC. Retrofit flex duct in 150°F attics loses capacity before conditioned air ever reaches the register. Homeowners blame the furnace; the real problem is the delivery path.
Pricing for Heating & Furnace in Van Nuys, CA
Here’s what Van Nuys homeowners actually pay:
| Service | Typical Range in Van Nuys |
|---|---|
| Furnace Repair | $150–$700 |
| Furnace Replacement | $3,500–$7,500 |
| Furnace Tune-Up | $80–$200 |
Replacement costs trend toward the higher end when we’re working in unconditioned attics with limited access, which describes most Van Nuys retrofits. The extended flue runs and heavy-duty gas valves that detached workshops require add material cost but eliminate the callback expense of undersized components. We provide upfront written estimates before any work begins. Call (855) 467-1888 for an exact quote for your specific system.
We Also Serve Cities Near Van Nuys
Our service area extends to Valley Glen, Sherman Oaks, Encino, and North Hills. Each of these neighborhoods shares the San Fernando Valley’s thermal extremes but has its own housing stock quirks. Valley Glen’s newer construction presents different duct challenges than Van Nuys’s 1960s ranches. Sherman Oaks and Encino have more hillside exposure affecting flue draft. We adjust our approach for each.
Serving Van Nuys, CA — Our Local Coverage Area
We’re based in the Van Nuys 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 Van Nuys
The extreme attic heat during Van Nuys’s 110°F summer spikes causes metal ductwork and furnace cabinets to expand beyond their normal range; when they contract during cooler nights, fasteners loosen and heat exchanger seams stress. We inspect for cracked exchangers and retorque all mounting hardware during tune-ups. Call (855) 467-1888 to schedule before the next heat wave.
Yes, this is one of the most common calls we get from Van Nuys’s western neighborhoods where post-war ranches have standalone workshops. Flue backdrafting from valley floor wind patterns, combined with gas valve corrosion from smog exposure, causes pilot and intermittent ignition failures. We correct the draft problem and install heavy-duty valves rated for detached structures. Most repairs finish same-day.
No. Furnace installation involves gas line connections, combustion air requirements, and flue venting that must meet California Mechanical Code and local fire department regulations. In Van Nuys’s 150°F attics, improper clearances to combustibles create genuine fire risk. We pull permits, perform load calculations, and test combustion safety on every installation. This is trained professional work.
Short cycling in Van Nuys usually means restricted airflow from collapsed flex duct in a hot attic, or an oversized furnace fighting against ductwork that can’t move the designed volume. The system overheats and safety-limits out. We measure static pressure and inspect duct runs to find the restriction. Sometimes the fix is duct repair, not equipment replacement.
Yes. The City of Los Angeles requires a mechanical permit for any furnace replacement, and an inspection verifies proper gas line connections, flue venting, and combustion air. We handle permit submission and scheduling as part of our replacement service. Homeowners who skip permitting risk failed home inspections at sale and potential insurance issues after any incident.
Written by Jason Trent, Owner and Field Supervisor at Stonegate Heating & Air California, serving Van Nuys and the San Fernando Valley since 2008.