Residential Furnace Repair in Downey, CA

Why Downey homeowners trust #1 AC Guys

Our family has engineered solutions for four generations, giving us 80+ years of problem‑solving perspective you can feel in your home’s comfort and air quality. We specialize in both residential and commercial systems and excel on complex projects—from tricky duct runs in older homes to advanced controls in new builds. Every repair aims at safety, efficiency, and the healthy air your family deserves.

Service area includes Downey and surrounding Los Angeles County communities, plus nearby Orange County, Ventura County, and Western Riverside County—so if your schedule takes you across the region, our team is ready.

Signs your furnace needs expert repair

• No heat, intermittent heat, or frequent cycling
• Burning or gas odors, or unusual sounds (bangs, rattles, whines)
• Cold spots, weak airflow, or rooms that never get warm
• Higher energy bills without changes in usage
• Pilot, igniter, or flame sensor issues
• Tripped breakers, shorted components, or control board faults

If you notice any of the above, turn off the system if you suspect a safety concern and contact our team. Quick action can protect your furnace, air quality, and peace of mind.

Our engineer‑led repair process

We start with a focused diagnostic, not guesswork. That can include electrical testing, combustion checks, airflow and static pressure readings, and heat exchanger and vent inspections. By finding root causes—whether a failing inducer, clogged filter, undersized return, or control logic fault—we prevent repeat issues and help your system operate cleaner and more efficiently.

You’ll receive clear findings and repair options before any work begins. We stock common parts and provide efficient repairs to restore safe, comfortable heat as soon as possible.

Healthier heat, better air

Our mission is healthy air at home. That means we pay attention to combustion byproducts, ventilation, and filtration. A safe, tuned furnace supports cleaner indoor air, steadier humidity, and consistent comfort—especially important for families with children, older adults, or anyone sensitive to air quality.

Training that elevates your results

Our engineers have trained at the factories of Fujitsu (Japan), Mitsubishi Elektrik (Thailand), Midea (China), Gree (China), and Hier (China). We bring disciplined methods and quality standards from these programs to every furnace repair we perform in Downey.

What we service

• Gas and electric furnaces
• High‑efficiency and variable‑speed systems
• Zoned and smart‑control heating
• Ductwork, airflow balancing, and return upgrades
• System tune‑ups and efficiency optimization

Whether your home is mid‑century, recently remodeled, or new construction, we adapt the repair to the building, not just the equipment.

What to expect when you book

• Prompt scheduling—often same‑day in Downey
• Thorough diagnostics and clear repair options
• Respect for your home, with clean work practices
• Transparent communication from start to finish

We focus on solutions that fit your goals—quick restoration of heat, improved efficiency, or long‑term reliability.

Serving Downey and beyond

Based in Los Angeles County, we serve Downey, the Gateway Cities, and neighboring areas—including Orange County, Ventura County, and Western Riverside County. If your heating challenges span multiple properties, we can coordinate service across locations.

Ready to restore safe, efficient heat?

From no‑heat calls to persistent comfort issues, #1 AC Guys brings the knowledge and care your home deserves.
Contact us today to schedule residential furnace repair in Downey and breathe easier with an engineer‑led team on your side.