Fast, Reliable Heating & Furnace Across North Hills
Heating and furnace repair in North Hills typically runs $175–$825, with most service calls completed same-day when you call before noon. If your furnace won’t start, cycles constantly, or you’re smelling gas near the unit, we’ll get a technician to your North Hills home fast. Call (844) 875-9451 for a free estimate and honest diagnosis.
We’ve been driving out to North Hills since Redwood Heating & Air opened 13 years ago. The 91343 and 91393 ZIP codes are familiar territory — we know the post-WWII tract homes along Parthenia Street, the ranch-style builds near Sepulveda Basin, and the split-levels tucked up against the foothills. Gregory Hahn founded this company and still leads every technical decision, so when you call us, you’re getting master-technician accountability, not a dispatcher reading from a script.
Why Redwood Heating & Air San Diego Is North Hills’s Preferred Heating & Furnace Company
North Hills homeowners have left us 428+ verified reviews averaging 4.6 stars over 13 continuous years. That’s not a snapshot from one good month — it’s a track record that outlasts most local HVAC startups and one-truck operations. Our customers in the 91343 ZIP specifically mention appreciating that Gregory Hahn holds a Master Technician designation and still reviews complex jobs personally.
Our response time to North Hills averages under 90 minutes for emergency calls during valley heat events, because we keep parts inventory stocked for the brands most common here: Carrier, Trane, Lennox, and Bryant units that dominate the post-1994 earthquake replacement wave. We don’t waste a trip to the supply house for a gas valve or ignitor that we should already have on the truck.
What separates us from franchise dispatchers is brand-agnostic fluency. We’re certified to service nine major HVAC brands — Carrier, Trane, Lennox, Daikin, Rheem, York, Goodman, Bryant, and American Standard — so we diagnose your actual system instead of pushing whatever brand the parent company stocks. From a single mini-split to a full commercial system, we service your brand.
Our Heating & Furnace Services in North Hills
Furnace Repair
Most furnace repair calls in North Hills trace back to one of three problems: failed ignitors in 1990s-era units, gas valves that have degraded after decades of San Fernando Valley heat, or blower motors burned out from short-cycling caused by leaky ductwork. A typical furnace repair in North Hills runs $175–$825 depending on parts and accessibility. We carry ignitors, flame sensors, and gas valve solenoids for Carrier, Bryant, and Trane systems on every truck, so we’re not leaving you without heat while we hunt down components.
Furnace Replacement
North Hills sits in a unique replacement cycle. The 1994 Northridge earthquake forced emergency HVAC replacements across the 91343 and 91393 ZIP codes in 1994–1996, meaning a disproportionate number of local furnaces are now 28–30 years old and failing simultaneously. This pattern is invisible in nearby Valley Glen or Van Nuys neighborhoods that weren’t as heavily affected by the quake. If your furnace was installed in that post-quake window, replacement is a matter of when, not if. Furnace replacement in North Hills typically costs $3,500–$7,500 including equipment, permits, and installation. We size every replacement with a full Manual J load calculation that accounts for your home’s actual duct leakage — not the fantasy number from the original 1960s build.
Furnace Tune-Up
The San Fernando Valley acts as a heat collector, and North Hills is far enough inland that marine influence is minimal. Triple-digit heat waves from late June through September push attic temperatures past 140°F, baking capacitors, fan motors, and electrical connections in your furnace’s control board. Annual preventive maintenance isn’t optional here — it’s essential. Our tune-up includes combustion analysis, CO testing, gas pressure verification, and duct leakage inspection. We catch heat exchanger cracks before they become carbon monoxide hazards. A tune-up in North Hills runs $95–$235.
Heat Exchanger Inspection & Replacement
This is where North Hills’s geography becomes genuinely dangerous. Heat exchanger cracks from 30 years of thermal cycling in superheated attics are the most common serious failure we find in post-1994 earthquake replacement units. A cracked heat exchanger leaks carbon monoxide into your living space. We test every furnace with a combustion analyzer, and if we find CO leakage, we red-tag the unit and shut it down immediately. Heat exchanger replacement runs $1,200–$2,400, but in most 1990s-era North Hills furnaces, full replacement is the smarter investment given the unit’s age and efficiency. We serviced a mid-1990s Carrier furnace on Parthenia Street where the heat exchanger had cracked from thermal stress — a classic post-quake replacement unit that had run 28 summers in 140°F attics. The homeowner’s gas bill had doubled, and our CO test confirmed leakage. We swapped in a new 96% AFUE Lennox with a sealed combustion chamber that isolates the heat exchanger from attic extremes.
Gas Valve Repair
Secondary gas valve failures on early-1990s Rheem models are a North Hills signature problem. The solenoid coils degrade after decades of valley heat, causing intermittent ignition failures or delayed lighting that creates a small explosion risk. If your Rheem furnace lights with a loud bang or the gas valve chatters on startup, call us immediately. Gas valve replacement runs $350–$650 including parts and testing.
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 North Hills
We stock local parts for Carrier, Bryant, Trane, and American Standard systems because those brands dominated the 1994–1996 earthquake replacement wave across North Hills. Our warehouse carries gas valves, ignitors, blower motors, and control boards for these units specifically, which means faster turnaround when your furnace fails on a January night. We’re also factory-trained or experienced across Lennox, Goodman, Rheem, York, and Daikin — so if your home has a different brand, we’re not guessing. We service your brand.
Common Heating & Furnace Problems We See in North Hills Homes
- Heat exchanger cracks from 30-year thermal cycling. Post-1994 earthquake replacement furnaces have run through thousands of heating cycles in attics that exceed 140°F in summer. The constant expansion and contraction fatigues metal, and CO leakage follows. We find this weekly in North Hills homes with original post-quake units.
- Gas valve solenoid failure on early-90s Rheem models. Valley heat degrades the coil insulation over decades, causing intermittent operation or delayed ignition. The “boom” on startup is unburned gas igniting all at once. It’s dangerous and needs immediate attention.
- Duct leakage forcing furnace short-cycling. Technicians working North Hills regularly find attic ductwork that has become brittle and unsealed after decades of 140°F+ attic summers. A duct system testing at 30–40% leakage is normal here. The furnace overheats, hits its limit switch, shuts down, cools, and restarts — destroying the blower motor and heat exchanger prematurely.
- Ignitor failure in high-usage Carrier and Bryant units. Silicon carbide ignitors degrade with every heating cycle, and North Hills furnaces run more hours per year than coastal units due to colder valley nights. We replace these with upgraded silicon nitride ignitors that last 3–4x longer.
Pricing for Heating & Furnace in North Hills, CA
Here’s what furnace work actually costs in the 91343 and 91393 ZIP codes. These ranges reflect real invoices from North Hills jobs over the past 24 months:
| Service | Price Range in North Hills |
|---|---|
| Furnace Repair | $175–$825 |
| Furnace Replacement | $3,500–$7,500 |
| Furnace Tune-Up | $95–$235 |
| Heat Exchanger Replacement | $1,200–$2,400 |
| Gas Valve Repair/Replacement | $350–$650 |
| Ignitor Replacement | $175–$350 |
What moves your job within these ranges? Accessibility matters — a furnace crammed into a small attic closet takes longer to service than one in a garage. Duct leakage extent affects replacement quotes because we factor in whether sealing or partial replacement is needed alongside the furnace. And permit requirements for gas line modifications add cost but are non-negotiable for safety. We give upfront pricing before any work begins. Estimates are free. Call (844) 875-9451 for an exact quote on your North Hills home.
We Also Serve Cities Near North Hills
Our Heating & Furnace team covers the full San Fernando Valley corridor. We regularly service homes in Northridge (where the 1994 quake epicenter created similar replacement cohorts), Van Nuys (mixed vintage housing with its own duct-leakage challenges), Valley Glen (smaller lots with compact attic systems), and San Fernando (older commercial HVAC and residential hybrids). Same master-technician standards, same Gregory Hahn oversight, same multi-brand parts inventory on every truck.
Serving North Hills, CA — Our Local Coverage Area
We’re based in the North 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 North Hills
North Hills furnaces endure two stressors coastal units don’t: attics that exceed 140°F for months each summer, accelerating electrical and metal fatigue, and a concentrated wave of 1994 earthquake-replacement units now hitting 28–30 years of service life simultaneously. The San Fernando Valley’s inland basin traps heat, and overnight lows during heat events often stay above 75°F, preventing the thermal recovery that lets coastal units rest. This sustained load burns out capacitors, motors, and heat exchangers at measurably higher rates. If your furnace is original to a 1995 replacement, it’s living on borrowed time. Call (844) 875-9451 for a free inspection.
Replace proactively if your furnace is a post-1994 earthquake unit, especially if you’ve had two repair calls in the past two years. A 1995 furnace in North Hills has endured roughly 8,000+ heating cycles in superheated attic conditions. When it fails in January, you’ll pay emergency rates and have limited equipment availability. Planning replacement in fall lets you compare options, secure permits without rush fees, and avoid a mid-winter no-heat emergency. We offer free replacement estimates with full Manual J sizing. Call (844) 875-9451 to schedule.
Generally no — if the repair exceeds $400 and the unit is original to the 1994–1996 replacement wave, replacement is the better investment. A 30-year-old furnace in North Hills operates at 65–80% AFUE efficiency versus 96%+ for modern units, meaning you’re paying 20–35% more on gas bills than necessary. Plus, heat exchanger cracks become increasingly likely at this age, and that’s a safety issue we won’t patch. We’ll always give you honest numbers both ways. Call (844) 875-9451 for a straight assessment.
For North Hills’s superheated attic environment, we specify sealed-combustion furnaces that draw outside air rather than consuming attic air. Lennox’s SLP98V and Carrier’s Infinity 98 with variable-speed blowers adapt to duct leakage better than single-stage units, and their sealed combustion chambers protect heat exchangers from attic extremes. Trane’s XV80 and American Standard’s Gold S8V2-C are also proven in 140°F+ attic installations across the 91343 ZIP. We don’t push one brand — we match equipment to your home’s ductwork, insulation, and usage patterns. Call (844) 875-9451 to discuss options.
That’s accumulated dust on the heat exchanger and burner assembly burning off after months of disuse — normal for the first 1–2 heating cycles of the season in North Hills. If the smell persists beyond 30 minutes, or you detect a metallic, electrical, or rotten-egg odor, shut the unit off and call us immediately. Persistent smells can indicate a cracked heat exchanger, failing motor bearings, or a gas leak. Given the age of many North Hills furnaces, we don’t recommend ignoring any odor that seems off. Call (844) 875-9451 and we’ll check it same-day.
Ready to get your North Hills furnace diagnosed right the first time? Call (844) 875-9451 for a free estimate. Gregory Hahn reviews every complex job personally, and our trucks carry parts for Carrier, Bryant, Trane, Lennox, and the other major brands you’ll find in 91343 and 91393 homes. Same-day service available when you call before noon.
Written by Gregory Hahn, Owner at Redwood Heating & Air, serving North Hills and the San Fernando Valley since 2011.