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.
The Safety Switch That Stops Furnace Overheating
A high-limit switch is a temperature-activated safety device mounted in the supply plenum of a furnace, and its sole job is to shut off the burners immediately if plenum air temperature climbs above a safe threshold, protecting both the heat exchanger from thermal damage and the ductwork and home from overheated supply air. It uses a bimetal disc or strip that physically flexes open when it reaches its rated trip temperature, breaking the circuit that keeps the gas valve or heating elements energized.
This is distinct from the flame rollout switch, which detects flame escaping its intended combustion path, the high-limit switch responds purely to air temperature within the plenum, regardless of what's happening at the burner itself. A furnace can trip its high-limit switch even with completely normal, well-contained combustion if something downstream is restricting the airflow needed to carry heat away from the heat exchanger fast enough.
The most common root cause behind repeated high-limit trips is restricted airflow: a severely clogged air filter, closed or blocked supply registers throughout the house, a failing blower motor that's no longer moving its rated airflow, or ductwork that's undersized or has become disconnected or crushed somewhere along its run. In each case, the heat exchanger generates the same amount of heat but has less air passing over it to carry that heat away, so plenum temperature climbs faster than it should and trips the safety switch, sometimes within minutes of the furnace starting.
We treat repeated high-limit trips as an airflow investigation first and a switch replacement question second, replacing a tripping high-limit switch without addressing an underlying airflow restriction just means the new switch will trip just as often as the old one did. Once airflow is confirmed adequate, if the switch itself is found to be tripping at an incorrect temperature, either too low, causing unnecessary nuisance shutdowns, or failing to trip at all when it should, we replace it matching the exact temperature rating and physical mounting to the original component.
Frequently Asked Questions, High Limit Switch Replacement
Need a Component Diagnosed or Replaced?
We test before we replace. Most parts are on the truck for same-day service.