HVAC Services in Altadena, CA

Heating, air conditioning and new-system installation for Altadena - repairs for standing homes and complete HVAC for homes being rebuilt after the Eaton Fire.

Call (818) 288-0805 Request an Estimate

Same-day service available
Licensed, bonded & insured - CA License #1149962
Residential & commercial

Your Local HVAC Contractor in Altadena, CA

Altadena sits directly against the San Gabriel Mountains, above Pasadena, with hotter summers, colder winter nights and more dust and smoke exposure than the valley floor. Since the January 2025 Eaton Fire, the community has also been in the middle of one of the largest residential rebuilds in Los Angeles history, and HVAC is a core part of every one of those projects.

We provide AC repair and installation, furnace and heating repair, heat pump and ductless mini-split installation, duct design, and indoor air quality service throughout 91001 and 91003 - from the Meadows and Christmas Tree Lane to Rubio Canyon, Loma Alta and the streets near Eaton Canyon.

For homeowners rebuilding, we design and install complete heating and cooling systems for new construction, working with your builder on load calculations, duct layout, equipment selection and the permit and inspection process.

Altadena Homes We Work On

Historic Altadena housing ranges from 1900s and 1920s Craftsman and Spanish Revival homes to mid-century ranches and hillside customs. Many surviving older homes have gravity or wall furnaces and no central air, which makes mini-splits and compact heat pump systems the practical upgrade. New rebuilds are largely all-electric or heat-pump-ready, with tighter envelopes that call for properly sized, variable-capacity equipment and balanced ventilation rather than oversized legacy systems.

Altadena Services

Heating & Air Conditioning Services in Altadena, CA

Repair, replacement, installation and maintenance for air conditioners, furnaces, heat pumps and ductless systems - for Altadena homes and businesses alike.

New Construction & Rebuild HVAC

Complete heating and cooling design and installation for homes being rebuilt after the Eaton Fire: Manual J load calculations, duct design, heat pump or furnace-and-AC systems, ventilation and Title 24 compliance, coordinated with your builder.

AC Repair in Altadena

Air conditioning repair for standing homes: no cooling, weak airflow, iced coils, refrigerant leaks, electrical failures and smoke-clogged systems. Diagnosed and quoted before work starts.

Heat Pump Installation

All-electric heat pump systems for rebuilds and for existing homes moving off gas. One system covers Altadena summers and winters efficiently, with rebates reviewed as part of the quote.

Furnace & Heating Repair

Furnace, wall heater and floor furnace repair and replacement with combustion and venting safety checks on every call.

Ductless Mini-Split Installation

Mini-splits for older Altadena homes without ducts, ADUs, garages, studios and temporary or phased rebuild housing.

Indoor Air Quality & Smoke Filtration

High-MERV filtration, whole-house air purification and duct sealing sized to your blower for smoke and construction dust.

Commercial HVAC in Altadena, CA

We also serve small commercial properties along Lake Avenue and Lincoln Avenue in Altadena - shops, restaurants, offices and community buildings - including HVAC for commercial rebuilds and tenant improvements.

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What Makes Altadena HVAC Different

Local conditions decide what equipment belongs in your home. Here is what we design around in Altadena.

Rebuilding after the Eaton Fire

New homes need HVAC designed from the plans up: accurate load calculations, duct layouts that fit the framing, heat pump systems that meet current California energy code, and coordination with the builder and inspectors. We handle the mechanical scope so it does not hold up the rest of the project.

Smoke, ash and ongoing dust

Between fire-season smoke and the dust of a large-scale rebuild, Altadena air needs real filtration. Media filter cabinets, sealed ducts and clean coils protect indoor air and equipment life.

Foothill temperature swings

Hot afternoons and cold nights at the base of the mountains favor variable-capacity heat pumps and well-insulated attic ductwork sized to Altadena conditions, not a generic LA number.

Altadena Neighborhoods We Serve

We cover every Altadena ZIP code. If your street is not listed, call (818) 288-0805 - odds are we are already working nearby.

The Meadows
Christmas Tree Lane area
Loma Alta
Rubio Canyon
Chaney Trail area
Eaton Canyon area
Altadena Heights
Lake Avenue corridor
Lincoln Avenue corridor
Pasadena (nearby)
La Cañada Flintridge (nearby)
Sierra Madre (nearby)

Altadena, CA ZIP codes we service:

91001 · 91003

Altadena HVAC Questions, Answered

Common questions from Altadena homeowners and property managers.

Do you install HVAC for homes being rebuilt after the Eaton Fire?

Yes. We design and install complete systems for new construction, including load calculations, duct layout, heat pump or conventional equipment, and the permit and inspection process, working directly with your builder or general contractor.

Should a rebuilt Altadena home use a heat pump or a gas furnace?

Most rebuilds are going all-electric with heat pumps, which meet current California energy code more easily, qualify for rebates and handle Altadena weather well. We can also install furnace-and-AC systems where gas is preferred and available.

My existing home survived but the system smells like smoke. What can be done?

Smoke residue loads filters, coats coils and settles in ductwork. Depending on severity, the fix ranges from coil cleaning and filter upgrades to duct cleaning or duct replacement. We inspect and recommend based on what we actually find.

Do you serve all of Altadena?

Yes - ZIP codes 91001 and 91003, from the Pasadena border up to the mountain edge, plus neighboring Pasadena, La Cañada Flintridge and Sierra Madre.

Are you licensed and insured?

Yes. NorthernWindHVAC is licensed, bonded and insured under CA License #1149962, and we pull permits through Los Angeles County Building and Safety for Altadena work.

We Also Serve Areas Near Altadena

NorthernWindHVAC covers Glendale, Burbank, Tujunga, Pasadena and the surrounding Greater Los Angeles area.

Need HVAC Service in Altadena, CA?

Call now for AC repair, heating repair, installation or a replacement estimate in Altadena. Same-day service available, Mon-Fri 8:00 AM - 5:00 PM, Sat 10:00 AM - 4:00 PM.

Call (818) 288-0805 Request Service Online