Residential Furnace Repair in Fontana, CA

What We Repair in Fontana Homes

Our engineers solve simple and complex heating issues with equal precision. We service all major residential furnace brands and configurations, including high‑efficiency and variable‑speed models.

• No heat, intermittent heat, or short cycling
• Ignition and flame sensor issues
• Blower motor, wheel, and control board failures
• Limit switch, pressure switch, and safety lockouts
• Thermostat and communication faults
• Airflow and duct static pressure problems
• Combustion, venting, and gas valve concerns
• Noise, vibration, and heat exchanger performance checks

Every visit includes a safety-first approach centered on clean, healthy air and system reliability.

Our Engineer‑Level Repair Process

We don’t guess—we measure. Your technician performs targeted diagnostics to identify the true root cause, then provides clear options with transparent pricing before work begins.

• Combustion analysis and draft verification
• Static pressure and airflow balancing checks
• Electrical testing for motors, boards, and sensors
• Gas pressure and fuel delivery validation
• Code and manufacturer‑spec compliance review

Result: long‑lasting repairs that restore efficiency, safety, and comfort—often the same day.

Healthy Air at Home Is Our Mission

Heat should feel great and be healthy to breathe. Our mission is healthy air in your home for a healthy life. That’s why we evaluate filtration, duct cleanliness, and ventilation impact during furnace repairs, and recommend improvements that reduce particulates and combustion byproducts.

Factory‑Trained Expertise

Our team is factory‑trained by:

• Fujitsu (Japan)
• Mitsubishi Electric (Thailand)
• Midea (China)
• Gree (China)
• Haier (China)

This training informs our engineering‑grade diagnostics and best practices on modern heating and controls. We apply these standards across the residential systems we service.

When to Repair vs. Replace

Not every problem means a new furnace. We’ll help you decide with clear data:

• Repair if the furnace is well‑maintained, under 10–12 years old, and the fix is minor.
• Consider replacement if repairs exceed 30% of replacement cost, the heat exchanger is compromised, or efficiency has declined significantly.
• Ask about modern options and IAQ upgrades that improve comfort, noise, and air quality.

We provide no‑pressure guidance, and free estimates on replacements when appropriate.

Transparent Pricing and Same‑Day Availability

You’ll approve a firm price before we begin. No surprises—just meticulous workmanship, quality parts, and strong communication from start to finish. Same‑day appointments and emergency furnace repair are available in most cases.

Why #1 AC Guys

• 4th‑generation family of engineers
• 80+ years of combined engineering experience
• Residential specialists who can solve complex issues
• Factory‑trained: Fujitsu, Mitsubishi Electric, Midea, Gree, Haier
• Healthy‑air and safety‑first focus
• Code‑compliant, warranty‑safe repairs
• Serving Fontana and surrounding Inland Empire communities

Serving Fontana and Nearby Areas

We proudly serve homeowners in Fontana and neighboring communities across the Inland Empire and Western Riverside County, and we also work throughout Los Angeles County, Orange County, and Ventura County. If you’re near Fontana, there’s a great chance we can help—just ask.

Frequently Asked Questions

Do you repair all furnace brands?
Yes. We service all major residential brands and configurations. Our engineering‑based approach ensures accurate diagnostics and durable fixes.

How fast can you arrive in Fontana?
Same‑day service is often available. Call early for the fastest scheduling.

Will you check safety and air quality?
Always. We perform combustion and ventilation checks, and we can recommend filtration or ventilation upgrades for healthier air.

Do your repairs meet code and protect warranties?
Yes—our methods align with California code and manufacturer guidance.

Ready for Reliable Heat?

Get expert residential furnace repair in Fontana from the 4th‑generation engineers at #1 AC Guys. Book now for fast, precise service that restores safe, efficient heat—and healthier air at home.