Fast, Reliable Emergency & Commercial HVAC Across Calabasas
When your AC dies in July or your furnace quits on a 40-degree Calabasas night, you need a crew that shows up prepared for the valley’s specific demands. We’re Stonegate Heating & Air California, and our Emergency & Commercial HVAC team has handled everything from seized blower motors in The Oaks to full chiller rebuilds along Las Virgenes Road. Calabasas runs 10–15°F hotter than Malibu just over the mountains, with triple-digit stretches that punish equipment sized for mild coastal weather. That’s why we stock parts for Carrier, Trane, Lennox, and Goodman systems before we leave Sacramento, and why owner Jason Trent supervises every job as Field Supervisor. Call (855) 467-1888 for emergency service or a free estimate.
Why Stonegate Heating & Air California Is Calabasas’s Preferred Emergency & Commercial HVAC Company
We’ve built our reputation on showing up with the right parts and the right expertise, not excuses. After 16 years and nearly 500 verified reviews at a 4.7-star average, we’ve learned that Calabasas customers — especially in gated communities and on acreage properties with detached workshops — value one-trip solutions above all else. You don’t want a tech who has to order a vent cap or a blower motor and disappear for three days.
Jason Trent doesn’t run this company from a back office. He’s Field Supervisor, which means he’s physically on job sites, including the ones we’ve run in 91302 and 91372 after the Woolsey Fire rebuild wave began. That rebuild wave matters because Calabasas sits entirely within a Very High Fire Hazard Severity Zone. Every new install and post-fire replacement must satisfy California Title 24 energy compliance AND CBC Chapter 7A ember-resistant vent requirements. Techs coming from lower fire-hazard parts of the LA Basin routinely get surprised by LA County Building and Safety plan-check rejections when generic vent caps show up on the paperwork. We don’t.
Our familiarity with Calabasas’s housing stock — large custom homes from the mid-1980s to early 2000s, many 3,500–8,000+ sq ft with vaulted great rooms — means we understand why multi-zone variable-refrigerant or zoned-ducted systems aren’t upsells. They’re necessities. Single-zone equipment short-cycles in those floor plans and fails to cool the great room when August hits 105°F.
Our Emergency & Commercial HVAC Services in Calabasas
24/7 Emergency HVAC
Calabasas doesn’t cool down at night during Santa Ana events. Temperatures spike, humidity drops into the teens, and wildfire smoke loads up your filtration system while your AC runs flat out. We take emergency calls around the clock because a failed compressor in a 91372 valley pocket or a seized blower in The Oaks isn’t a tomorrow problem. Our trucks carry motors, capacitors, contactors, and the Chapter 7A-compliant vent caps that Calabasas permits require. Jason Trent has pulled midnight shifts on rooftop units in gated communities where the guard shack needs advance notice. We know the drill.
Commercial HVAC
Calabasas’s commercial base runs from retail along Agoura Road to professional offices and light industrial near the 101 corridor. Many of these spaces operate on packaged rooftop units that take direct sun and Santa Ana wind abuse. We service and replace commercial systems up to 25 tons, and we understand the permitting path through LA County for unincorporated parcels. If your building went through post-Woolsey reconstruction, we’ll verify that your combustion-air intakes and exhaust terminations carry the proper mesh-screened vent products. Generic caps will stall your permit. We’ve seen it happen to contractors who didn’t check.
Rooftop Unit Service
Rooftop units dominate Calabasas commercial and some large residential properties because they keep equipment out of the fire-defensible space and free up ground-level square footage. But they’re exposed. After the Woolsey Fire, we arrived at a detached workshop in The Oaks to diagnose a rooftop unit that had lost all cooling. The indoor blower motor was seized from ash infiltration, and the combustion-air intake lacked the required mesh screen. We replaced the motor, retrofitted a listed ember-resistant vent cap, and recharged a Trane system that now handles triple-digit heat in that valley. That’s the kind of one-trip fix Calabasas property owners need.
Chiller Service
While less common in pure residential settings, chillers appear in Calabasas’s larger commercial and mixed-use properties, particularly post-Woolsey rebuilds that upgraded to higher-efficiency central plants. Chiller maintenance isn’t optional in this climate. The thermal load from those 10–15°F-above-coastal peaks pushes these systems hard for five months straight. We handle annual maintenance, refrigerant analysis, compressor diagnostics, and controls calibration. A chiller failure in August means emergency cooling costs that dwarf preventive service.
Annual Maintenance
Calabasas’s ash, dust, and pollen load — compounded by Santa Ana wind events and wildfire smoke — clogs filters and coats coils faster than coastal environments. Our tune-ups include deep coil cleaning, blower wheel inspection, refrigerant charge verification, and combustion safety checks. For properties in the fire zone, we also inspect vent terminations for mesh integrity. A $80–$200 tune-up prevents the $150–$650 repair call. In 16 years, we’ve learned that the customers who schedule spring and fall maintenance rarely make emergency calls in July.
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 Calabasas
Whatever brand you have, we’ve likely worked on it. Our technicians are factory-trained or field-experienced on nine major HVAC brands: Carrier, Trane, Lennox, Goodman, Rheem, York, Daikin, Bryant, and American Standard. For Calabasas customers, this means no “we don’t service that brand” dead end. We stock common Carrier and Trane parts specifically because those brands appear frequently in the 1980s–2000s custom home stock around Calabasas. When Goodman or Lennox equipment needs a proprietary board or sensor, we source same-day from LA Basin distributors rather than making you wait for a Sacramento warehouse transfer. Nine brands, one team. From a single-room mini split to a full commercial system.
Common Emergency & Commercial HVAC Problems We See in Calabasas Homes
- Seized blower motors or condenser fans from ash infiltration. Santa Ana winds and wildfire smoke carry fine particulate that bypasses standard filters and bearings. We see this most in properties near open space or in the Las Virgenes Road corridor, where wind exposure is highest. Annual maintenance catches it before seizure.
- Combustion-air intakes and exhaust terminations rejected at plan check. LA County Building and Safety enforces Chapter 7A strictly for Calabasas’s Very High Fire Hazard Severity Zone. Generic vent caps don’t pass. We’ve had to retrofit listed mesh-screened products on jobs where the original contractor skipped this step.
- Oversized single-zone systems short-cycling in 3,500–8,000+ sq ft homes. Original equipment in Calabasas’s 1980s–2000s stock was often sized by rule-of-thumb, not Manual J load calculation. The result: equipment that blasts cold air, shuts off quickly, and never dehumidifies the vaulted great room properly. Zoning or VRF conversion fixes it.
- Refrigerant leaks in rooftop units from thermal expansion stress. Calabasas’s 60°F+ daily temperature swings in shoulder season — 45°F at dawn, 105°F by 3 PM — stress flare connections and copper linesets. Rooftop units take the worst of it because they’re fully exposed.
Pricing for Emergency & Commercial HVAC in Calabasas, CA
Honest numbers help you plan. These ranges reflect what we’ve seen across the LA Basin market, including Calabasas’s higher permitting and compliance costs for fire-zone work:
| Service | Typical Range in Calabasas |
|---|---|
| AC Repair | $150–$650 |
| Furnace Repair | $150–$700 |
| AC Installation | $3,500–$7,500 |
| Tune-Up / Annual Maintenance | $80–$200 |
What moves you within these ranges? Equipment accessibility matters in Calabasas. Rooftop units in gated communities may need crane coordination. Post-Woolsey rebuilds with Title 24 and Chapter 7A compliance add material costs for listed vent products. Multi-zone systems in large homes require more labor than single-package swaps. We don’t guess over the phone. Call (855) 467-1888 for a free, on-site estimate with upfront pricing before any work begins.
We Also Serve Cities Near Calabasas
Our service radius covers the full west San Fernando Valley and Ventura County overlap zone. We regularly run calls in Woodland Hills, West Hills, Las Flores, and Topanga. Each shares Calabasas’s Santa Ana wind exposure and fire-zone concerns to varying degrees, though Calabasas’s Very High Fire Hazard Severity Zone and post-Woolsey regulatory environment remain unique. If you’re in a neighboring city and found this page, our Emergency & Commercial HVAC team handles your area too.
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 — Emergency & Commercial HVAC in Calabasas
Because Calabasas is entirely within a Very High Fire Hazard Severity Zone, LA County enforces CBC Chapter 7A ember-resistant vent requirements on all new and replacement installations. Standard vent caps lack the fine mesh screening that prevents ember infiltration during wildfire events. Plan-check reviewers at LA County Building and Safety reject permits that specify generic caps. We’ve retrofitted listed ember-resistant products on multiple post-Woolsey jobs where the original contractor missed this requirement. Call (855) 467-1888 if you’re unsure whether your current vents comply — estimates are free.
Yes. We coordinate with guard staff and property management for after-hours entry, and we’ve done so repeatedly in The Oaks and similar Calabasas gated communities. Jason Trent carries contact protocols for most major HOAs in 91302. Emergency HVAC doesn’t wait for business hours, and we don’t make you choose between security protocols and a functioning system. For same-day emergency service in The Oaks, call (855) 467-1888.
Yes. California Title 24 requires Manual J load calculations for all new residential HVAC installations, and post-Woolsey rebuilds in Calabasas must meet current energy codes, not the standards from when the original home was built. More importantly, Calabasas’s large custom homes — often 3,500–8,000+ sq ft with vaulted ceilings and multi-story layouts — routinely fail to cool properly when sized by square-footage rules of thumb. We’ve replaced multiple systems in rebuilds where the initial contractor skipped Manual J and installed undersized or poorly zoned equipment. We run full load calculations on every install. Call (855) 467-1888 to schedule.
First, check your electrical panel for a tripped breaker, but do not open the outdoor unit. Santa Ana winds drive ash and debris into condenser coils and blower compartments, and the resulting motor seizure or electrical fault can be hazardous to diagnose without proper lockout procedures. Turn the system off at the thermostat and call (855) 467-1888. We’ll dispatch a technician who carries replacement motors, capacitors, and the ember-resistant vent caps that Calabasas permits require if we find intake contamination. Same-day service is available.
Twice yearly: once in March before the cooling season, and once in October after peak load ends. Calabasas’s triple-digit summer peaks and Santa Ana wind debris load push chillers harder than coastal locations. Spring service catches refrigerant leaks and valve issues before July demand. Fall service addresses coil fouling and compressor wear from five months of continuous operation. Our $80–$200 tune-up includes full refrigerant analysis, controls calibration, and vent termination inspection for fire-zone compliance. Call (855) 467-1888 to book your spring or fall maintenance window.
Written by Jason Trent, Owner and Field Supervisor at Stonegate Heating & Air California, serving Calabasas and surrounding communities since 2008.