54ยฐF in Altadena ยท Cool โ€” great time for a furnace check.

AC Repair in Altadena, CA

Fast, honest AC repair โ€” same day, 7 days a week. Serving Altadena and surrounding neighborhoods.

(323) 970-3113Free estimate
CSLB #1073586
5.0โ˜… Google
20+ Years in LA
Same-day service
Free written estimate
24/7 emergency

When Altadena residents need ac repair, LC Heating & Air delivers same-day service backed by 20+ years of working in the LA market. Altadena is an unincorporated community nestled against the San Gabriel Mountains directly north of Pasadena. The neighborhood experienced devastating impacts from the 2025 Eaton Fire, which destroyed homes and left airborne particulates throughout the community that require professional HVAC assessment and remediation. That local knowledge means our technicians arrive knowing what equipment and access challenges to expect โ€” cutting diagnostic time and getting repairs done faster.

When your AC stops cooling in an LA summer, every hour matters. LC Heating & Air has diagnosed and repaired every make and model of air conditioner in the Altadena area for over 20 years. We show up on time, diagnose the problem accurately, give you a written price before we touch anything, and fix it right โ€” the first time.

Overview

Los Angeles summers are brutal on air conditioning equipment. From Hollywood Hills homes that trap heat above the basin to San Fernando Valley houses that routinely see 100+ degree days in July and August, LA AC systems work harder and fail more often than systems in moderate climates. When a system goes down during a heat advisory, waiting days for a technician is not an option โ€” especially for households with elderly residents, young children, or family members with health conditions that make heat genuinely dangerous.

LC Heating & Air stocks parts for the most common residential AC failures on every service truck. Capacitors, contactors, hard start kits, common refrigerant types, condensate drain components, and control boards for major brands โ€” our technicians arrive equipped to complete most repairs in a single visit without a parts run. We serve all of Greater Los Angeles and can typically respond to urgent AC repair calls in Hollywood, Pasadena, Burbank, Glendale, Studio City, Sherman Oaks, Beverly Hills, West Hollywood, Silver Lake, Los Feliz, Culver City, and surrounding neighborhoods within one to two hours.

Every AC repair call starts with a thorough system inspection โ€” not just a look at the symptom. We check refrigerant levels and test for leaks before adding refrigerant. We inspect the electrical components, the evaporator and condenser coils, the blower motor, the thermostat, and the condensate drain system. A proper diagnosis ensures the repair we recommend actually addresses the root cause โ€” not just the visible symptom. We never charge by the hour on repair calls, and we give you a flat written estimate before any work begins. You approve the price; we do the work; you sign off when satisfied.

Local HVAC Challenges

The 2025 Eaton Fire created an acute HVAC challenge for Altadena: smoke and ash infiltration into duct systems, contaminated air filters, and soot deposits on evaporator coils and heat exchangers. Homes in the fire's path need complete duct inspection and cleaning, filter replacement with HEPA-grade filtration during the remediation period, and in some cases coil replacement where heat damage has compromised efficiency. Beyond fire impacts, Altadena's foothill location means properties face wildfire risk generally and should invest in air quality measures including MERV 13+ filtration and whole-house air purification.

Neighborhood Context

Altadena's mountain proximity means cooler overnight temperatures in winter โ€” heating demand is higher than in the LA basin, and furnace maintenance is correspondingly more important. Many Altadena homes have gas furnaces that provide critical heating during December through February when overnight temperatures can drop into the 30s. We provide thorough furnace inspection including heat exchanger integrity testing, combustion analysis, and gas connection verification โ€” all essential safety checks that protect your family from carbon monoxide exposure.

Why Choose Us

Same-day diagnosis: We stock parts for the most common AC failures. Most repairs are done in a single visit.
Written estimate first: You approve the price before we pick up a single tool. No surprises on the invoice.
All brands serviced: Carrier, Lennox, Trane, Rheem, Goodman, Daikin, Mitsubishi โ€” we repair them all.
CSLB Licensed & insured: License #1073586. Every technician is background-checked and NATE-trained.

Call (323) 970-3113 for same-day ac repair in Altadena. We answer 24/7 โ€” emergencies and scheduled appointments alike. Licensed, insured, CSLB #1073586.

Why LC Heating & Air
20+ years serving LA
5.0โ˜… on Google (300+ reviews)
CSLB Licensed #1073586
Written estimate before work begins
Same-day service available
12-month labor warranty
24/7 emergency calls
All brands serviced
Call (323) 970-3113Request free estimate

Our ac repair process in Altadena

STEP 01
Call & schedule
Call (323) 970-3113. We'll book a time that works for you โ€” including evenings and weekends.
STEP 02
Diagnose
Our technician performs a full system inspection: refrigerant levels, electrical, coils, capacitors, and airflow.
STEP 03
Written estimate
We explain exactly what's wrong and what it will cost to fix. You decide โ€” no pressure.
STEP 04
Repair & test
We repair the issue with quality parts and test the system through a full cooling cycle before we leave.
Verified Reviews

What Altadena customers say about ac repair

Verified reviews from homeowners in Altadena and nearby neighborhoods who used our ac repair service.

5.0 โ˜… Google
300+ verified reviews

โ€œLC replaced our entire HVAC system โ€” new Carrier condenser, furnace, and coil. Leo walked us through every option without pressure. The install team was professional and clean. System runs perfectly and our electricity bill dropped about 30%.โ€

D
David K.
Pasadena, CA ยท Nov 2025

โ€œWe were skeptical about a heat pump for heating in the winter but LC explained the technology clearly. After one winter season, our home stays warmer than it ever did with the old furnace, and it's quieter too.โ€

B
Brian Y.
Pasadena, CA ยท Feb 2026

โ€œAfter the Eaton Fire, our ducts smelled like smoke. LC did a full cleaning โ€” negative air pressure, rotary brushes, the works. Air quality in our home is completely different now. They were sensitive to what our neighborhood went through.โ€

M
Mark D.
Highland Park, CA ยท Mar 2025
Read all 300+ Google reviews โ†’
Frequently asked questions

AC Repair in Altadena โ€” common questions

How fast can LC Heating & Air respond to a ac repair call in Altadena?
We offer same-day ac repair service throughout Altadena. For emergencies, we aim to arrive within 60โ€“90 minutes. Call (323) 970-3113 any time โ€” we answer 24/7.
Is LC Heating & Air licensed to do ac repair work in Altadena?
Yes. LC Heating & Air holds California Contractors State License Board license #1073586. We are fully licensed and insured for all HVAC work in Altadena and throughout LA County.
Do you provide a free written estimate for ac repair in Altadena?
Yes. Every job starts with a free written estimate. You approve the price before we touch anything. No surprises, no mystery charges. If we find additional issues during the job, we discuss them with you before doing any additional work.
How quickly can LC Heating & Air respond to an AC repair call in Altadena?
We offer same-day service throughout LA County. For emergencies, we aim to arrive within 60โ€“90 minutes. Call (323) 970-3113 any time โ€” we answer 24/7.
Do you service all AC brands in Altadena?
Yes. We service Carrier, Lennox, Trane, Rheem, Goodman, Daikin, Mitsubishi, LG, and all other major brands. We also work on older and discontinued models.
Why is my AC blowing warm air in Altadena?
The most common causes are low refrigerant, a failed capacitor, a dirty evaporator coil, or a tripped circuit breaker. These are all repairable โ€” and we diagnose which one before any work begins.
My AC is making a loud noise. Is that serious in Altadena?
Grinding or banging usually means a motor bearing or fan blade issue โ€” turn the unit off and call us. Clicking can be a relay or electrical issue. Hissing may indicate a refrigerant leak. Don't run the unit if you hear grinding โ€” it can cause further damage.
Do you offer a warranty on AC repairs in Altadena?
Yes. All parts carry a manufacturer warranty and our labor is guaranteed for 12 months. If the same issue recurs within a year, we come back at no additional charge.

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Don't wait for it to break.
Same-day service, honest pricing, 20 years in LA.

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