Residential Emergency Heating Service in Fontana

Heat outage in the middle of a cold night? Our residential emergency heating team is on call 24/7 to get your home comfortable again in Fontana and nearby communities. Whether it is a furnace that will not ignite, a heat pump in defrost limbo, or a ductless system throwing error codes, #1 AC Guys arrives prepared to diagnose and fix the problem with precision.

Why homeowners in Fontana choose #1 AC Guys

• 4th‑generation family of engineers with 80+ years of engineering expertise
• Factory‑trained at Fujitsu (Japan), Mitsubishi Elektrik (Thailand), Midea (China), Gree (China), and Hier (China)
• Specialists in complex residential and large custom projects
• Fast emergency dispatch, fully stocked vans, and code‑compliant repairs
• Transparent, upfront pricing and clear repair options
• Mission focused on healthy indoor air for a healthy life

What we repair today

• Gas and electric furnaces: ignition, flame sensors, inducer motors, control boards, limit switches
• Heat pumps: refrigerant issues, reversing valves, defrost problems, low heat output
• Ductless mini splits: communication errors, inverter boards, sensor faults, drain issues
• Thermostats and controls: miscalibration, wiring faults, smart thermostat setup
• Airflow and duct issues: blocked filters, collapsed ducts, blower failures
• Electrical and safety: breakers, short circuits, CO checks, gas leak concerns

Our engineers do not guess. We test. From combustion analysis and electrical measurements to refrigerant diagnostics and airflow verification, we pinpoint the true cause so you do not pay for parts you do not need.

Our emergency visit process

• Immediate scheduling: Call or book online for priority dispatch.
• Safety first: On arrival we secure gas, electrical, and carbon monoxide risks.
• Root‑cause diagnosis: We run a full system assessment, not just a quick reset.
• Clear options: You get straightforward repair choices with pricing upfront.
• On‑the‑spot repair: Most issues are fixed same day thanks to stocked parts.
• Proof of performance: We verify heat output, cycle operation, and IAQ basics before we leave.

Health‑first indoor air approach

Your comfort is more than temperature. We evaluate filtration, humidity, ventilation basics, and carbon monoxide safety to help reduce allergens and combustion risks. Need further improvements? We can recommend right‑sized filtration and ventilation upgrades designed for your home and lifestyle.

Trained by the manufacturers that power reliability

Our technicians are factory‑trained at Fujitsu (Japan), Mitsubishi Elektrik (Thailand), Midea (China), Gree (China), and Hier (China). That means faster, more accurate diagnostics and repairs on today’s high‑efficiency systems, from inverter heat pumps to advanced ductless mini splits.

Transparent pricing and strong guarantees

• Upfront quotes before work starts
• Options tailored to repair, optimize, or replace when appropriate
• Quality parts and workmanship warranty
• No hidden fees—ever

We always aim to repair first when it makes sense. If your system is at end of life, we provide clear replacement options with energy‑efficient equipment and a clean, code‑compliant install plan.

Serving Fontana and nearby areas

We are a Los Angeles–based, Southern California company proudly serving Fontana and surrounding Inland Empire neighborhoods, along with nearby counties including Western Riverside, Orange, and Ventura. If you are in or around Fontana, we are ready to help.

Signs you need emergency heating service

• No heat or only cold air from registers
• Burning, gas, or electrical odors
• Frequent tripping breakers or system short‑cycling
• Unusual noises: grinding, banging, or high‑pitched squeals
• Yellow burner flame or CO alarm alerts—call immediately

If you notice any of the above, power the system down and contact us for urgent service. Your safety comes first.

Engineered for complex problems

From zoning and airflow imbalances to tricky inverter control boards, our engineering‑first approach shines on complex calls. We correct the underlying design or setup issues that cause repeat failures, helping you save money over the long term.

Our mission

Healthy air at home for a healthy life. Every repair, tune‑up, and installation is guided by that promise—delivering reliable heat, clean air, and confidence in your home’s safety.

Ready for fast help?

Call #1 AC Guys or book online now for 24/7 residential emergency heating in Fontana. We will dispatch an experienced engineer, provide upfront options, and restore warmth—often the same day.

When your comfort and safety cannot wait, trust the 4th‑generation engineers at #1 AC Guys.