Furnace Repair in Livermore

Rapid Heating Restoration Across the East Bay

Furnaces eventually need repairs. It's not a question of if, but when. Whether your system won't turn on, keeps cycling off, makes unusual noises, or just isn't heating your home evenly, the problem usually starts small and gets worse the longer you wait. Eagle Air has been diagnosing and repairing furnaces in Livermore since 1993, and we know that most heating problems are fixable if they are caught early.

Our NATE-certified technicians service all major brands and handle everything from simple fixes, such as replacing a failed igniter, to more complex repairs involving gas valves, blower motors, and control boards. We diagnose the problem correctly the first time, explain what needs to be fixed, and provide upfront pricing before we begin work. A satisfaction guarantee backs our repairs, and if you need us after hours, we're available 24/7 for emergencies.

When you need furnace repair in Livermore, trust Eagle Air? Call (925) 605-7977 or contact us online.

Common Furnace Problems We Fix

At Eagle Air, our NATE-certified technicians are trained to identify and resolve the specific heating challenges found in the Tri-Valley microclimate. 

Most furnace malfunctions fall into three primary categories:

• Ignition failures. Ignition problems mean your furnace won't light or stay lit, usually caused by a failed igniter, a dirty flame sensor, or a faulty gas valve.
• Airflow restrictions. Airflow problems cause the furnace to overheat and shut down repeatedly, typically indicating a clogged filter, a failing blower motor, or a tripped safety switch.
• Mechanical wear. Strange noises, such as rumbling, squealing, or banging, often indicate worn bearings, loose components, or issues with the blower wheel.

Our Diagnostic Difference: Root Cause vs. Symptom 

When we diagnose your furnace, we look for the root cause of the problem, not just the immediate symptom. For example, a furnace that keeps shutting off may have a faulty limit switch. However, simply replacing the switch without addressing the underlying airflow issue ensures the unit will fail again. Our goal is to fix it right the first time, minimizing the risk of "callback" repairs.

The Local Advantage: Faster Repairs 

Unlike "virtual" contractors who operate solely out of vans, Eagle Air maintains a physical headquarters in Livermore. This facility allows us to stock common parts for most major furnace brands directly at our local depot. This logistical advantage means we can often complete repairs the same day, rather than ordering parts and forcing you to wait for a return visit.

Understanding Furnace Safety Controls

Modern heating systems are equipped with sophisticated safety mechanisms designed to protect your home and equipment. These switches automatically shut the system down if they detect a hazardous operating condition. While a system shutdown can be frustrating, it is usually a sign that these safety measures are working exactly as intended to prevent fire or carbon monoxide risks.

The safety devices that most often interrupt furnace operation include:

• The high-limit switch. This component acts as a fail-safe against overheating. It monitors the temperature inside the heat exchanger and cuts power to the gas valve if heat levels exceed safe parameters. This trip is frequently caused by restricted airflow, often due to a clogged filter or a failing blower motor, rather than a defect in the switch itself.
• The pressure switch. This safety device confirms that airflow through the heat exchanger is adequate before ignition. If the draft inducer motor is weak or the vent pipe becomes blocked, the pressure switch stays open, preventing the furnace from lighting and allowing combustion gases to vent safely.

At Eagle Air, our NATE-certified technicians understand that a tripped switch is rarely the problem itself, but rather a warning sign of a deeper issue. We utilize advanced diagnostic tools to identify the cause of these switch trips and then address the underlying problem, so that your furnace operates safely and reliably.

The "Why" Matters 

Many homeowners believe a tripped switch simply needs to be replaced. In reality, swapping out a safety switch without fixing the airflow or combustion issue that caused it is only a short-term fix. 

Eagle Air’s technicians use precision tools to measure system pressures and temperature rise. We pinpoint why the safety system activated and address the underlying problem, so your furnace can run safely and reliably for the long term.