Lennox HVAC in Tujunga, CA | Redwood Heating & Air San Diego
Independent Lennox service in Tujunga runs $150–$700 for most repairs, with same-day response available across the 91042 and 91043 ZIP codes. What separates our work here from standard Valley HVAC service is Tujunga’s unique overlap of fire-hazard code and canyon microclimate — every Lennox system we touch has to survive 140°F attic summers, hard freezes to the upper 20s°F, and LA City’s mandatory 1/16-inch ember-resistant vent screening that most neighboring cities don’t require. Call (844) 875-9451 for a free estimate.
Why Tujunga Residents Choose Us for Lennox Service
We’ve been servicing Lennox equipment across Southern California for 13 years, and Tujunga’s canyon-foothill conditions have taught us things no manual covers. Gregory Hahn founded this company and still leads every technical decision — he’s the Master Technician who shows up when a modulating furnace won’t modulate or a heat pump’s reversing valve has seized in a Santa Ana wind event. Our 428 verified reviews at 4.6 stars reflect that accountability.
We’re not a Lennox-authorized dealer. We’re something more useful for Tujunga homeowners: an independent shop fluent across nine major brands, including Lennox’s full Merit, Elite, and Signature lines. That means we diagnose what’s actually wrong instead of defaulting to factory-scripted solutions. We stock Lennox-specific parts — SLP98V combustion blowers, ML193UH gas valves, EL296V control boards — alongside quality aftermarket capacitors and contactors when they meet or exceed OEM spec. If a repair crosses 50% of replacement cost, we’ll tell you straight.
Gregory grew up in Mira Mesa and trained at Miramar College, but he’s spent enough January mornings in Tujunga to know which heat pump defrost boards fail when canyon humidity freezes on the coil. Lennox sales & service is one of our core competencies, not a sideline.
Common Lennox HVAC Problems We Solve in Tujunga
- Merit ML14XC1 capacitor failure from attic heat. Tujunga’s slab-on-grade ranches route duct through crawl spaces and attics that spike past 140°F in July. The dual-run capacitors in 2012–2016 ML14XC1 condensers bulge and fail in under five years here — we’ve replaced dozens in the post-WWII housing stock near Foothill Boulevard. We upgrade to higher-temp-rated replacements and verify coil cleanliness against Santa Ana debris.
- Signature SLP98V secondary heat exchanger rust. That same canyon elevation produces hard freezes the flat Valley never sees. When condensate drainage slows on low-pitch roofs common in 1950s Tujunga ranches, the horizontal drain pan cracks and secondary heat exchanger rust follows. We catch this during tune-ups before CO risk develops.
- Elite EL16XP1 reversing valve solenoid sticking. Big Tujunga Canyon funnels Santa Ana winds directly onto outdoor units. Debris lodges in the base pan, the reversing valve solenoid coil hangs open or closed, and the heat pump locks into one mode. We clear the pan, test valve operation across full pressure differential, and recommend debris shields where the site warrants.
- iComfort thermostat calibration drift. Tujunga’s unshaded single-pane windows — original to many 1940s–1960s homes — create extreme solar gain zones. Prolonged exposure pushes iComfort touchscreen calibration off by 3–5°F, causing phantom setpoint errors and short-cycling. We recalibrate or recommend compatible replacements with better thermal shielding.
- Fresh-air intake non-compliance on VHFHZ inspections. Standard 1/4-inch mesh attic vents tied to Lennox fresh-air intakes fail LA City inspection in Tujunga’s Very High Fire Hazard Severity Zone. We source 1/16-inch ember-resistant termination caps from our Sun Valley specialty supplier and pre-install them on every service call.
Lennox Service in Tujunga: What Local Conditions Mean for Your Equipment
Tujunga sits in LA’s Very High Fire Hazard Severity Zone, and that designation changes everything about how we approach Lennox work here. The 1/16-inch ember-resistant mesh requirement on all roof and wall penetrations — including HVAC fresh-air intakes — is municipal code, not suggestion. Contractors who normally work Lennox service in Burbank or Glendale roll up with standard 1/4-inch mesh and get red-tagged by the inspector. We’ve seen it stall renovation permits for weeks.
The canyon topography compounds this. Winter nights in the upper 20s°F freeze condensate lines that would never ice in Lennox service in Sunland. Summer attic temperatures cook capacitors three years early. Santa Ana winds sandblast outdoor coils with debris from Big Tujunga Canyon. A Lennox system in Tujunga isn’t just a Lennox system — it’s a Lennox system fighting on three fronts simultaneously. That’s why we carry ember-compliant termination caps on our trucks, stock cold-climate drain pan heaters for heat pump retrofits, and spec higher-static blowers for the tight ductwork in post-WWII ranches. On a call to a 1950s ranch home on Day Street near Foothill Boulevard, we diagnosed a Lennox ML14XC1 condenser that was locking out on high-pressure due to a failing dual-run capacitor — common in Tujunga’s attic heat. After replacing the capacitor and cleaning the coil of Santa Ana debris, we also noted the attic fresh-air intake had standard 1/4-inch mesh, which we swapped for 1/16-inch ember-resistant screen to bring the home into VHFHZ compliance. The homeowner avoided a failed inspection on their pending renovation permit.
Lennox Models & Products We Service in Tujunga
We work on the full Lennox residential and light-commercial lineup:
- Merit Series: ML14XC1 condensers, ML193UH single-stage furnaces — the workhorse equipment in most Tujunga ranches
- Elite Series: EL16XC1 and EL296V two-stage systems, plus EL16XP1 heat pumps
- Signature Series: SLP98V modulating furnaces, SL18XC1 variable-capacity condensers
- MLA Mini-Split Series: Ductless solutions for the 1920s–1930s craftsman cottages near Tujunga’s historic town center that have no ductwork at all
Our parts approach is straightforward: OEM Lennox for gas valves, heat exchangers, and control boards; quality aftermarket for capacitors, contactors, and fan motors when they match or beat OEM spec. We keep common Tujunga-failure parts stocked — high-temp capacitors, ember-screen termination caps, SLP98V drain pans — so most repairs don’t wait on a supply house run. If I wouldn’t put it in my own house, I’m not recommending it for yours.
Lennox Service Pricing in Tujunga
| Service | Price Range |
|---|---|
| AC Repair | $150–$650 |
| Furnace Repair | $150–$700 |
| AC Installation | $3,500–$7,500 |
| Tune-Up | $80–$200 |
What drives cost? Attic access difficulty in Tujunga’s tight crawl spaces, VHFHZ compliance work if your vents need upgrading, and whether we’re replacing a failed component or diagnosing an intermittent control issue. Our free estimate includes full system inspection, refrigerant pressure check, combustion analysis on furnaces, and written findings — no charge, no obligation. For exact pricing on your Lennox system, call (844) 875-9451; estimates are free.
Serving Tujunga, CA — Our Local Coverage Area
We’re based in the Tujunga 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 — Lennox HVAC in Tujunga
Debris from Big Tujunga Canyon clogs the outdoor coil and base pan, causing high-pressure lockout. We clean the coil, verify condenser fan amp draw, and install debris shields on units directly exposed to canyon funneling. Call (844) 875-9451 if your unit’s cycling off in wind events — same-day Lennox service in Shadow Hills and throughout the canyon area is available.
Yes — the MLA mini-split series or a small-duct high-velocity system fits most Tujunga slab ranches and 1920s cottages without adding bulkheads. We size for the actual heat load, not square-footage guesses. Call (844) 875-9451 for a free load calculation.
Yes — all roof and wall penetrations, including combustion air intakes and exhaust terminations, need 1/16-inch ember-resistant mesh. Standard 1/4-inch mesh fails inspection. We source compliant caps and install them on every Tujunga furnace service.
Heat exchangers aren’t field-repairable — replacement is the only safe option, and for a 1990s unit, that usually exceeds 50% of a new system’s cost. We recommend replacement with current Lennox or cross-brand options sized for Tujunga’s dual-season load. Call (844) 875-9451 for exact numbers on your model.
iComfort thermostats on 2010-era systems drift 3–5°F from solar gain through Tujunga’s common single-pane windows. We recalibrate or replace with thermostats that have better thermal shielding and compatibility with your specific Lennox control protocol.
Service Areas Near Tujunga
We run Heating & Furnace in Tujunga calls regularly, and our Lennox expertise extends to neighboring communities including Lennox service in Santa Ana, Lennox service in Tustin, plus Covina, Azusa, and the broader San Diego metro where our main operations are rooted.
Book Your Lennox Service in Tujunga Today
Same-day Lennox service is available across Tujunga’s 91042 and 91043 ZIP codes. Whether your ML14XC1 capacitor failed in yesterday’s heat or your SLP98V needs VHFHZ-compliant venting before inspection, Gregory Hahn and our team diagnose it right and fix it once. Call (844) 875-9451 now for your free estimate.
Written by Gregory Hahn, Owner at Redwood Heating & Air, serving Tujunga and Southern California since 2011.