Heating & Furnace in North Hills — Same-Day Service, Done Right the First Time

Fast, Reliable Heating & Furnace Across North Hills

Heating and furnace repair in North Hills, CA typically costs $150–$700 for repairs and $3,500–$7,500 for full replacement, with most service calls completed same-day. Our Heating & Furnace team covers both ZIP codes here — 91343 and 91393 — with owner Jason Trent supervising fieldwork personally. We’ve spent 16 years working California’s HVAC market, and North Hills presents a specific challenge: a concentration of 1990s-era systems installed after the Northridge earthquake that are now failing in unison, alongside acreage properties with detached workshops running heavy-duty furnaces most Valley contractors rarely encounter. Call (855) 467-1888 for a free estimate.

Call (855) 467-1888

Why Stonegate Heating & Air California Is North Hills’s Preferred Heating & Furnace Company

North Hills homeowners know the difference between a tech who reads a manual and one who’s pulled failed heat exchangers from 150°F attics on Devonshire Street. We’ve earned 499 verified reviews at a 4.7-star average across our 16 years in business, and a growing share of those come from repeat customers in the 91343 ZIP who originally called us for a post-quake system and stayed because Jason Trent showed up to supervise the job himself.

Owner Jason Trent holds the title of Field Supervisor, not just Owner. That means company leadership is physically present on job sites, not managing from a back office. When you call Stonegate, you’re getting hands that have touched Carrier, Trane, Lennox, Goodman, Rheem, York, Daikin, Bryant, and American Standard equipment — nine brands, one team, whatever furnace you have.

Our response time to North Hills runs same-day for standard calls and emergency HVAC available for no-heat situations. We stock parts for the brands we service, which matters here because many 1990s-era systems use discontinued components that less-prepared contractors need to order.

Our Heating & Furnace Services in North Hills

Furnace Repair

Furnace repair in North Hills runs $150–$700 depending on the component and accessibility. We see a distinct pattern in this market: ignitor failures on high-cycle propane units powering detached workshops with multiple space heaters, and gas valves sticking from dusty garage environments on Rheem and York units near workshop setups. These aren’t failures a standard suburban tech encounters daily. We carry the heavy-duty ignitors and gas valve assemblies these applications demand, and Jason Trent evaluates whether a repair extends life meaningfully or just delays the replacement surge hitting these 28–30 year old systems.

Furnace Replacement

Furnace replacement in North Hills costs $3,500–$7,500, with most full-system swaps landing in the middle of that range once ductwork modifications are factored. This is our busiest category here, and for specific reason. North Hills sits at the epicenter of the 1994 Northridge earthquake’s damage zone, and a large share of its housing stock had HVAC systems hastily replaced during the mid-1990s rebuild wave. Those systems are now approaching 28–30 years old — precisely the failure window for compressors, heat exchangers, and duct connections — creating a concentrated replacement surge unlike neighboring Valley cities that weren’t hit as hard by the quake. We recently serviced a Lennox furnace on a 1940s ranch house near Devonshire Street. The system had a cracked heat exchanger from a 1996 post-quake replacement that was never maintained. We replaced the furnace with a Trane variable-speed gas-fired unit, matching ductwork to the insulated attic runs. That’s the level of surgical replacement these homes need — not a drop-in unit that ignores the duct geometry shaped by 1950s ranch construction and 1990s rebuild compromises.

Furnace Tune-Up

A furnace tune-up in North Hills costs $80–$200 and pays for itself differently here than in most LA markets. North Hills is deep in the interior San Fernando Valley, where summer highs routinely reach 105–110°F while the LA coast sits in the 70s — one of the most extreme inland-coastal differentials in the metro area. Attic temperatures in these low-slope ranch roofs can exceed 150°F on peak days, making duct sealing and attic insulation a primary driver of system efficiency and longevity here in a way that simply doesn’t apply to coastal LA neighborhoods. Our tune-ups include combustion analysis, heat exchanger inspection with borescope, and static pressure testing across the duct system. For North Hills specifically, we check flex duct joints for bake-hardening and separation — a failure mode we see constantly in 91343 from three decades of attic heat cycling.

Heat Exchanger Repair & Replacement

Heat exchanger cracks are the most serious furnace failure we encounter in North Hills, and they’re accelerated by conditions specific to this area. The 150°F attic temps create thermal fatigue in 1990s-era rebuilt systems that were often installed with minimal insulation and budget-grade flex duct. A cracked heat exchanger can leak carbon monoxide into living spaces. We don’t patch these — we replace the exchanger or recommend full furnace replacement depending on age, parts availability, and overall system condition. This is non-negotiable safety work, and Jason Trent personally verifies every heat exchanger diagnosis before we present options.

Trusted Brands We Service in North Hills

We maintain factory-trained or equivalent experience on nine major HVAC brands: Carrier, Trane, Lennox, Goodman, Rheem, York, Daikin, Bryant, and American Standard. For North Hills, this matters practically — many post-quake rebuilds used whatever equipment was available in 1994–1997, creating a mixed-brand landscape across the 91343 ZIP. We stock common heat exchangers, ignitors, gas valves, and control boards for the brands we see most in this market, which means faster turnaround and fewer return trips. From a single-room mini split to a full commercial system, we carry the parts and the brand fluency to fix it without the “we don’t service that brand” dead end.

Common Heating & Furnace Problems We See in North Hills Homes

• Heat exchanger cracks from attic thermal fatigue. The 150°F peak attic temperatures in North Hills’s low-slope ranch roofs accelerate thermal cycling in 1990s-era systems, creating stress fractures in heat exchangers that coastal LA simply doesn’t see at this rate. We inspect these with borescope cameras during every service call.
• Original capacitors and contactors in “new” 1996 systems. Technicians working the 91343 ZIP regularly find 1990s-era package units and split systems installed during post-quake rebuilds that have never been serviced — homeowners assumed a “new” system was fine and deferred maintenance for decades. Finding a 1996-vintage system with original capacitors, cracked flex duct joints baked by 30 summers of 150°F attic heat, and a refrigerant charge that’s never been touched is a North Hills calling card.
• Ignitor failure on high-cycle workshop furnaces. Acreage properties with detached shops often run propane or natural gas furnaces on extended cycles to heat workspace plus storage. These high-duty applications burn through hot surface ignitors faster than standard residential use, and the dusty Valley air compounds the problem.
• Gas valve sticking from dusty garage and shop environments. Furnaces mounted in detached workshops or garage-adjacent utility rooms in North Hills’s acreage properties ingest more particulate matter than typical indoor installations. Rheem and York units seem particularly susceptible to valve contamination in these conditions.

Pricing for Heating & Furnace in North Hills, CA

We Also Serve Cities Near North Hills

Our service radius covers Northridge to the west, Van Nuys to the south, Valley Glen to the southeast, and San Fernando to the north. Each of these markets has its own HVAC personality — Northridge shares North Hills’s quake-rebuild history, Van Nuys runs denser commercial and multi-family, Valley Glen mixes older stock with newer infill, and San Fernando climbs into slightly cooler foothill temps. Our Heating & Furnace team knows the differences and stocks accordingly. If you’re on the border between cities, call us — we’ll confirm coverage by address, not guess by ZIP code boundary.

FAQs — Heating & Furnace in North Hills