Extend the service life of your Lennox HS29-024-1 central air conditioner with genuine OEM replacement parts from Repair Clinic. The HS29-024-1 is a 2-ton single-stage cooling-only condensing unit in Lennox’s HS29 series, designed for residential applications requiring a compact 2-ton output class. Components most frequently replaced on the Lennox HS29-024-1 include the run capacitor, contactor, condenser fan motor, and control module. Use the HS29-024-1 parts list and HS29-024-1 diagram to confirm your component, then browse the complete Lennox central air conditioner parts catalog.
HS29-024-1 Model Number Context: 2-Ton Output Class and HS29 Series Position
The Lennox HS29-024-1 model number decodes as follows: HS29 identifies the condensing unit series within Lennox’s residential line, 024 indicates 24,000 BTU (2-ton) capacity, and the trailing 1 identifies the revision within the series. The HS29-024-1 is a 2-ton cooling-only unit, which means the HS29-024-1 central air conditioner does not include a reversing valve and cannot function as a heat pump; it is paired with a separate gas or electric heating system. The HS29-024-1 control module manages the unit’s operational sequence, safety inputs, and communicates with the thermostat or control system; this component is specific to the HS29 series and is not interchangeable with control modules from Lennox’s HS series at other tonnage ratings. The HS29-024-1 manual documents refrigerant charge specifications, electrical data, and component locations. For diagnostic guidance, visit the Lennox central air conditioner troubleshooting section.
Service Items and Wear Patterns on the Lennox HS29-024-1
HS29-024-1 Capacitor Failure: Compressor-Only vs Fan-Only vs Combined Symptoms
The HS29-024-1 capacitor is a dual-run unit with separate sections for the compressor and condenser fan motor. Because the two sections can fail independently, the symptom pattern helps identify which section has drifted out of specification before testing. If the fan runs normally but the compressor hums and then shuts off on thermal protection, the compressor section of the capacitor has failed. If the compressor runs but the fan does not start, the fan motor section has failed. If neither starts despite the contactor closing correctly, both sections have drifted out of specification simultaneously, which is common on older dual-run capacitors. Test both sections individually with a microfarad meter rather than replacing the capacitor based on symptom pattern alone. Browse Lennox central air conditioner capacitor parts.
Lennox HS29-024-1 Condenser Fan Motor Rated Speed and Coil Efficiency
The condenser fan motor on the Lennox HS29-024-1 must maintain its rated RPM throughout the cooling season to deliver the airflow the condenser coil requires for rated heat rejection. A motor with worn bearings or a degraded run capacitor section runs below rated speed, raising condensing pressure and reducing the unit’s effective cooling capacity. Because the HS29-024-1 is a 2-ton unit with less thermal mass than larger configurations, reduced fan motor speed has a proportionally larger impact on cooling capacity than on 3-ton or 4-ton units. Annual amperage measurement against the motor’s nameplate rating is the most reliable way to identify motor degradation before it causes a no-cooling complaint. Browse Lennox central air conditioner fan motor parts.
HS29-024-1 Contactor Contact Erosion and Compressor Voltage Starving
The contactor on the HS29-024-1 central air conditioner switches line voltage to the compressor and fan motor at every thermostat cycle. Over thousands of switching cycles, the silver alloy contact faces erode through arc discharge, increasing contact resistance and reducing the actual voltage delivered to the compressor below the nameplate specification. A compressor running on reduced voltage draws excess current, runs hotter, and trips its thermal overload protector more frequently. The visible symptom is a unit that starts and runs briefly before shutting off on a hot day, resetting after a short cool-down period. Inspect the contactor contact faces at each cooling season service; replace when any pitting is visible. Find compatible options at the Lennox air conditioner contactor page.
HS29-024-1 Control Module Communication Faults and Sequence Diagnosis
The HS29-024-1 control module manages the unit’s operational sequence, monitors safety inputs including the high-pressure switch and motor overload circuits, and communicates with the thermostat or communicating control system. A module fault presents as a unit that receives a thermostat call but does not engage the contactor, a compressor that starts without the fan motor, or a unit that does not respond to the thermostat call at all. Before condemning the control module, verify 24-volt control circuit voltage at the module’s input terminals and confirm the thermostat or communicating control system is sending a valid cooling call; a failed 24-volt transformer or broken thermostat wire produces the same symptom at significantly lower replacement cost. Browse Lennox central air conditioner control board parts.
Annual Condenser Coil Maintenance and its Impact on HS29-024-1 Efficiency
The condenser coil on the Lennox HS29-024-1 rejects heat from the refrigerant to the outdoor air stream. In residential installations, the coil accumulates cottonwood seeds, grass clippings, mulch dust, and pet hair between the aluminum fins over one to two cooling seasons. This debris layer restricts coil airflow, raises condensing pressure above the design operating range, and forces the compressor to work harder for the same cooling output. Annual coil cleaning at the start of cooling season with a low-pressure rinse from inside the coil outward removes debris without damaging the fins and maintains the rated seasonal efficiency of the HS29-024-1 central air conditioner.
Lennox HS29-024-1 Parts Through Repair Clinic
- Genuine Lennox OEM Parts for the HS29 Series: Every HS29-024-1 part in our catalog meets Lennox original equipment specifications for the 2-ton HS29 condensing unit platform. Browse the full Lennox central air conditioner parts catalog filtered to your model.
- Dual-Section Capacitor Testing Guidance: Our HS29-024-1 capacitor listings and diagnostic content document the independent compressor-section and fan-motor-section failure symptom patterns, supporting accurate diagnosis before the capacitor is ordered.
- HS29-024-1 Parts List and Diagram Access: The interactive HS29-024-1 diagram on the listing page identifies the capacitor, contactor, fan motor, and control module by position in the cabinet before ordering.
- Fast Shipping During Cooling Season: In-stock HS29-024-1 parts ship promptly with tracking, supported by the Lennox air conditioner troubleshooting section for installation guidance.
Lennox HS29-024-1 Central Air Conditioner Parts FAQ
What is the HS29-024-1 control module and how does it differ from a standard contactor?
The HS29-024-1 control module is an electronic circuit board that manages the unit’s operational sequence, monitors safety inputs, and communicates with the thermostat system. It is distinct from the contactor, which is a mechanical relay that switches high-voltage power to the compressor and fan motor. A contactor fault prevents the compressor and fan from receiving power; a control module fault prevents the module from commanding the contactor to close in the first place.
Why does the Lennox HS29-024-1 compressor hum and then shut off while the fan keeps running?
A compressor that hums briefly and then trips its thermal overload protector while the condenser fan continues to run normally is the classic field symptom of a failed compressor section on the HS29-024-1 capacitor. The fan motor section of the dual-run capacitor is still within specification, explaining why the fan runs normally. Test the capacitor microfarad value on both sections before condemning the compressor; this symptom resolves with capacitor replacement in the majority of cases.
How do I use the HS29-024-1 diagram to identify the correct replacement part?
Access the interactive HS29-024-1 diagram on the Repair Clinic listing page and select the section of the unit containing the component you need to replace. The diagram identifies each component by its position in the cabinet with part number callouts. Cross-reference the part number from the diagram against the HS29-024-1 parts list to confirm the correct replacement before ordering.
How often should the HS29-024-1 capacitor be tested?
Test the HS29-024-1 capacitor annually at the start of each cooling season with a microfarad meter capable of reading both sections of a dual-run capacitor independently. Replace the capacitor if either section reads more than five percent below the microfarad rating printed on the capacitor label. Annual testing identifies drift before the capacitor fails completely, preventing mid-season no-cooling emergencies and protecting the compressor from the excess amperage draw that a degraded capacitor produces.
