Restore your HS29-042-1 central air conditioner running efficiently with genuine OEM replacement parts from Repair Clinic. The HS29-042-1 is a three-and-a-half-ton R-22 residential outdoor condensing unit using R-22 refrigerant. The HS29-042 is the three-and-a-half-ton configuration in Lennox’s HS29 series, between the three-ton HS29-036 and the four-ton HS29-048 configurations. The dual run capacitor, contactor, and outdoor fan motor account for the vast majority of service calls. Repair Clinic stocks genuine Lennox OEM parts for the HS29-042-1 including the Lennox capacitor parts, Lennox contactor parts, Lennox fan motor parts, and Lennox high-pressure switch parts. Browse the Lennox central air conditioner parts catalog filtered by HS29-042-1 for the complete parts inventory.
HS29-042-1: Three-And-A-Half-Ton R-22 Outdoor Condensing Unit Service
Annual capacitance testing of the dual run capacitor before the cooling season is the most cost-effective preventive maintenance step for the HS29-042-1. Match all microfarad values from the installed capacitor label before ordering a replacement. The central air conditioner repair help section covers capacitor testing and contactor diagnosis for this platform.
Most Replaced Parts on the HS29-042-1
Dual Run Capacitor for the HS29-042-1
The dual run capacitor provides starting and running torque for both the compressor and outdoor fan motor. A reading more than 10% below the rated value causes the compressor to hard-start. Match all three microfarad values from the installed capacitor label before ordering.
HS29-042-1 Contactor
The contactor closes the 240-volt compressor circuit at every cooling cycle start. Pitted or burned contacts generate heat that transfers to the compressor motor terminals. Replace a contactor with visibly eroded contacts before compressor winding damage occurs.
Outdoor Fan Motor for the HS29-042-1
The outdoor fan motor pulls air through the condenser coil. Test the run capacitor before ordering a replacement motor, as a failed capacitor produces identical slow-start symptoms at a fraction of the motor replacement cost.
High-Pressure Switch for the HS29-042-1
A high-pressure switch that trips repeatedly under normal ambient conditions points to a blocked condenser coil, failed fan motor, or refrigerant overcharge rather than a failed switch diaphragm.
Why Choose Repair Clinic for HS29-042-1 Parts
- Genuine Lennox HS29 OEM Components: Three-and-a-half-ton run capacitors, contactors, and fan motors confirmed for the HS29-042-1 R-22 platform Lennox central air conditioner parts.
- R-22 Refrigerant Circuit Context: The HS29-042-1 uses R-22 refrigerant. Refrigerant circuit service requires EPA 608 certified technicians with access to reclaimed R-22.
- Annual Capacitor Testing Priority: Pre-season capacitance testing is the most cost-effective preventive maintenance step for the HS29-042-1.
- 365-Day Returns: Return any uninstalled part within a full year of purchase with no restocking fees.
HS29-042-1 Parts FAQ
What is the HS29-042-1 and what ton size is it?
The HS29-042-1 is a three-and-a-half-ton R-22 residential outdoor condensing unit using R-22 refrigerant. The HS29-042 is the three-and-a-half-ton configuration in Lennox’s HS29 series, between the three-ton HS29-036 and the four-ton HS29-048 configurations.
Why does my HS29-042-1 hum but not start?
A unit that hums but does not start has most commonly failed at the dual run capacitor. Test the capacitor with a digital capacitance meter before testing any other component.
How does the Lennox HS29-042-1 differ from the HS29-036-2?
The HS29-042-1 is a three-and-a-half-ton unit while the HS29-036-2 is a three-ton unit in the same Lennox HS29 R-22 product line. The run capacitor carries different compressor-section microfarad ratings between the two tonnages.
How often should I test the capacitor on the HS29-042-1?
Test the capacitor annually before the cooling season. A reading more than 10% below the rated microfarad value indicates a weakening capacitor that should be replaced before it fails under peak summer load.
