HVAC Components We Repair & Replace, Georgetown TX
Motors & Fans
Diagnose and repair indoor blower motor failures, bearing wear, winding failure, and capacitor issues.
Replace failed indoor blower motors, we stock common motors for Carrier, Trane, Lennox, Goodman, and Rheem.
Lubricate blower motor bearings before they fail, catches motors that squeal before they burn out.
Clean blower wheels coated with dust and debris that reduce airflow and strain the motor.
Repair or replace condenser fan motors, outdoor fan failure causes compressor overheating on Georgetown's 100°F days.
Diagnose and repair outdoor condenser fan motor failures, common cause of AC shutdown in peak summer heat.
Replace cracked, bent, or imbalanced outdoor fan blades causing vibration and motor strain.
Capacitors & Contactors
The #1 Georgetown summer repair. Capacitors overheat and fail in sustained 100°F+ heat, fast, affordable fix.
Test capacitors before replacing, an out-of-spec capacitor causes the same symptoms as a failed compressor.
Replace failed run capacitors on compressors and fan motors, the most common summer AC component failure.
Replace start capacitors that provide the extra torque needed to start compressors on hot days.
Install hard start kits on aging compressors to reduce starting current and extend compressor life.
Replace pitted or failed contactors, the relay that connects power to the compressor and condenser fan.
Replace AC contactors with pitted contacts that cause intermittent power to compressor and outdoor fan.
Compressor Service
Diagnose compressor failures, not every compressor problem requires replacement. We test before recommending replacement.
Compressor replacement with full circuit flush, filter drier, evacuation, and recharge, done correctly to protect the new compressor.
Replace discharge mufflers that reduce compressor noise and protect the refrigerant circuit.
Install crankcase heaters to prevent refrigerant migration into compressor oil during cold Texas nights.
Replace failed high-pressure safety switches that protect compressors from dangerously high discharge pressure.
Replace low-pressure safety switches that prevent compressor damage from loss of refrigerant charge.
Furnace Components
Replace failed high-limit switches that shut furnaces down on overheating, essential safety component.
Replace faulty furnace control boards, we test all connected components first to confirm the board is the failure.
Repair or replace fan control switches that govern blower timing in older furnaces without electronic control boards.
Replace fragile silicon carbide or silicon nitride ignitors, the #1 furnace no-heat repair in Georgetown.
Replace or clean flame sensors that fail to detect the burner flame, causing furnace lockout.
Replace failed gas valves that prevent gas flow to burners, verified diagnosis before replacement.
Replace thermocouples on older standing pilot furnaces that fail to keep the pilot lit.
Replace tripped rollout switches, but also diagnose why flames rolled out, as this indicates a serious underlying condition.
Replace failed draft inducer motors in 80%+ efficiency furnaces, failure causes pressure switch trips and no-heat conditions.
Replace failed heating elements in electric furnaces, test all elements and sequencers before partial replacement.
Replace failed sequencers that stagger heating element startup to prevent circuit overload.
Replace cracked or blocked pilot tubing on older standing pilot furnaces and boilers.
Repair standing pilot assembly issues on older furnaces, thermocouple, pilot orifice, and gas valve.
Replace corroded or leaking main gas shutoff valves at HVAC equipment.
Outdoor Unit & Noise Components
Install compressor sound blankets to reduce outdoor unit noise, particularly useful in Georgetown's zero-lot-line neighborhoods.
Replace deteriorated equipment pads and isolation mounts that transmit vibration through slabs and walls.
Reading Microamp Signals to Diagnose Ignition Lockout
The flame sensor is a thin metal rod positioned directly in the burner flame path, and its job relies on a physical phenomenon called flame rectification: a flame is a partial conductor, and when the rod is inside an actual flame, a tiny current, typically in the range of 1 to 6 microamps depending on the furnace model, flows through the rod to the control board, confirming ignition has actually occurred. If the board doesn't detect this microamp signal within a few seconds of the gas valve opening, it shuts the gas valve immediately as a safety measure and locks out, this is what prevents a furnace from continuing to release gas without confirmed combustion.
The most common flame sensor failure isn't a broken sensor at all, it's a fouled one. Over a heating season, a thin layer of carbon and metal oxide byproduct builds up on the rod's surface from normal combustion, and that coating acts as an insulator that reduces the microamp signal the rod can pass, even though the rod itself is still physically intact. A furnace exhibiting the classic symptom pattern, it ignites, runs for a few seconds, then shuts off, and repeats this cycle, sometimes called short cycling on ignition, almost always points to a flame sensor whose signal has dropped below the threshold the board requires.
We diagnose this precisely rather than guessing, using a microamp meter connected in series with the flame sensor circuit while the furnace runs, reading the actual microamp signal against the manufacturer's minimum threshold. A sensor testing well below spec but still producing some signal can often be restored simply by cleaning the rod's surface with fine abrasive material, while a sensor testing at zero, or one that's physically corroded, cracked, or has a damaged porcelain insulator, requires full replacement.
Cleaning is worth attempting first since it's the lower-cost fix, but a sensor that requires cleaning every month or two rather than once a season is telling you something, usually either genuinely poor combustion quality upstream, worth investigating on its own, or a sensor that's simply near the end of its useful life and will keep needing more frequent attention until it's replaced outright.
Frequently Asked Questions, Furnace Flame Sensor Replacement
Need a Component Diagnosed or Replaced?
We test before we replace. Most parts are on the truck for same-day service.