York Contactors

York contactors are official OEM replacement electromechanical switching components for York HVAC equipment, designed to control the high-voltage load circuit of compressors, condenser fans, and other motor loads in York air conditioners, heat pumps, and commercial HVAC systems. A contactor uses a low-voltage control coil, typically 24V in residential equipment, to open and close a set of high-current contacts that supply power to the compressor or fan motor. When a contactor fails, the compressor or condenser fan won't run, the system won't cool or heat, and the unit may produce a buzzing sound from a coil that's energizing but failing to pull in the contacts. York contactors at SupplyHouse span single-pole (1P), two-pole (2P), and three-pole (3P) OEM configurations in 24V, 120V, and 277V coil voltages at amperage ratings from 30A through 60A, covering residential and commercial York HVAC applications, along with auxiliary contact accessories for commercial multi-stage systems. All York contactors at SupplyHouse are official OEM replacement parts for York HVAC equipment.

KEY SUBCATEGORIES / PRODUCT TYPES

Single-Pole (1-Pole) York OEM Contactors

Two single-pole York OEM contactors are available at SupplyHouse. The 1 Pole Contactor (24V, 40A), SKU S1-02442415000, is an official OEM replacement part for York HVAC equipment and replaces the earlier part numbers S1-024-27531-000, S1-02425837700, and S1-02427531000, meaning one currently active part covers the load circuits previously served by multiple older single-pole contactor part numbers on York residential air conditioners and heat pumps. The 120V 30A 1PNO Contactor, SKU S1-024-25836-700, serves specific York commercial or large commercial equipment configurations where the control circuit operates at 120V rather than the 24V used in residential equipment. Confirming the York unit model number and coil voltage before ordering a single-pole contactor is required, as the 24V and 120V coil variants aren't interchangeable.

Two-Pole (2-Pole) York OEM Contactors

Two two-pole York OEM contactors are available at SupplyHouse. The 2 Pole Contactor (24V, 40A), SKU S1-024-25840-700, is an official OEM replacement part for York HVAC equipment, switching both legs of the load circuit simultaneously for applications requiring full load disconnection. The 2PNO Contactor (24V, 30A), SKU S1-024-32004-000, carries a confirmed application list: BACB (180-240), DBUC (180-240), DCHB (090-120), DCUC (090-102), DDHB (150), DDUC (150), and PCM (090-120). The 2PNO designation indicates two-pole, normally open contacts. Confirming which 2-pole variant, the 30A or 40A, matches the original before ordering is required.

Three-Pole (3-Pole) York OEM Contactors

Two three-pole York OEM contactors are available at SupplyHouse. The 3PNO Contactor (24V, 30A), SKU S1-02425842700, is an OEM York three-pole normally open contactor with a 24V control coil for three-phase load circuit applications. The 3-Pole Contactor (24V, 30A), SKU S1-02441623000, is a second OEM York three-pole, 24V, 30A configuration. Three-pole contactors serve three-phase compressor and motor circuits in commercial York HVAC equipment where all three load legs must be switched together. Confirming which part number matches the existing contactor from the York unit's wiring diagram or label is required before ordering either three-pole model.

1 Pole Contactor w/ Shunt (24V, 30A) SKU S1-02427531000

The 1 Pole Contactor w/ Shunt (24V, 30A), SKU S1-02427531000, is an official OEM replacement part for York heat pumps and air conditioning equipment that includes a shunt as part of the contactor assembly. The S1-02442415000 (1 Pole, 24V, 40A) is listed as the current replacement for the S1-02427531000 at SupplyHouse, making the S1-02427531000 an earlier-generation option that remains available. For applications where the original contactor carried a shunt and the unit's wiring requires that configuration, confirming whether the upgrade to S1-02442415000 is the correct substitution based on York's service documentation is the appropriate verification step before ordering.

3-4 Pole Contactor w/ Auxiliary and Aux. Contact Block

Two contactor accessories round out the York contactor lineup at SupplyHouse for commercial and multi-stage applications. The 3-4 Pole Contactor w/ Auxiliary (277V, 30-60A), SKU S1-024-35798-000, is an OEM York contactor with a built-in auxiliary contact designed for 277V commercial applications, covering a load range of 30A to 60A across 3-pole and 4-pole configurations. The 277V coil voltage serves commercial York equipment fed from 277V electrical distribution, which is common in commercial buildings using 480V/277V three-phase power. The Aux. Contact Block, SKU 024-35493-000, is a standalone OEM York auxiliary contact accessory that adds low-current switching contacts to a main contactor assembly for control interlocking, indicator lights, or staging circuits that need to track the main contactor's open or closed status. Auxiliary contacts are used in commercial York equipment where the control system uses the contactor position as an input to multi-stage sequencing or fault monitoring logic. Confirming compatibility between the 024-35493-000 and the specific York contactor assembly it will be attached to is required before ordering.

BUYING GUIDE / HOW TO CHOOSE

Selecting the right York OEM contactor starts with the York unit's model number and the existing contactor's part number. York contactor part numbers are equipment-specific, and the pole count, coil voltage, and amperage rating must all match the original contactor to restore correct operation. The existing contactor's part number is typically printed on a label on the contactor body and can also be confirmed from the York unit's wiring diagram.

Pole count is the first technical filter. York contactors cover single-pole (S1-02442415000 at 40A/24V and S1-024-25836-700 at 30A/120V), two-pole (S1-024-25840-700 at 40A/24V and S1-024-32004-000 at 30A/24V), and three-pole (S1-02425842700 and S1-02441623000 at 30A/24V). The S1-024-35798-000 covers 3-pole and 4-pole configurations at 277V for commercial applications. Matching pole count to the original contactor is required. A single-pole contactor installed in a two-pole application leaves one leg of the compressor energized when the contactor is open.

Coil voltage is the second filter. Most residential York contactors use a 24V coil energized by the thermostat's low-voltage control circuit. The S1-024-25836-700 uses a 120V coil and the S1-024-35798-000 uses a 277V coil, both serving specific York commercial equipment. Using the wrong coil voltage prevents the contactor from pulling in correctly and may damage the coil.

Amperage rating must match or exceed the load requirements. York contactors cover 30A (S1-024-32004-000, S1-02425842700, S1-02441623000, S1-024-25836-700, S1-02427531000) and 40A (S1-02442415000, S1-024-25840-700), with the S1-024-35798-000 covering 30A to 60A. Confirming the amperage from the York unit's nameplate or wiring diagram prevents selecting a contactor rated below the compressor's full load or locked rotor amperage.

For units matching the confirmed application list on the S1-024-32004-000 (BACB 180-240, DBUC 180-240, DCHB 090-120, DCUC 090-102, DDHB 150, DDUC 150, PCM 090-120), verifying the York unit's model designation against that list is the most direct confirmation. SupplyHouse's compatibility lookup tool on each product page allows model number verification for all York OEM contactors.

FAQs

What is a York contactor and what does it do in an HVAC system?

A York contactor is an OEM electromechanical switching device that uses a 24V, 120V, or 277V control coil to open and close a set of high-current contacts that supply line voltage power to the compressor or condenser fan motor in a York air conditioner, heat pump, or commercial HVAC unit. When the thermostat calls for cooling, the control board energizes the contactor coil, which pulls in the contact plunger and closes the load circuit, allowing power to reach the compressor. When cooling demand is satisfied, the coil de-energizes, the contacts open, and the compressor shuts off. A failed contactor coil, pitted contacts, or a contactor stuck open or closed can prevent the compressor from running or cause it to run continuously.

What is the difference between single-pole, two-pole, and three-pole York contactors?

The difference between single-pole, two-pole, and three-pole York contactors is the number of load circuit legs each contactor switches simultaneously. A single-pole contactor switches one line leg of the load circuit. A two-pole contactor switches both line legs simultaneously for full load disconnection. A three-pole contactor switches all three legs of a three-phase compressor circuit in commercial equipment. The pole count is determined by the York unit's wiring design and must match the original contactor exactly. Installing a single-pole contactor in a two-pole application can leave one leg of the compressor energized even when the contactor is open.

What does the S1-02442415000 replace and why does it matter?

The York S1-02442415000 (1 Pole Contactor, 24V, 40A) is the current active OEM part that replaces three earlier York single-pole contactor part numbers: S1-024-27531-000, S1-02425837700, and S1-02427531000. Consolidating multiple older part numbers into one active replacement means a technician servicing a York unit with any of those three earlier contactors can order the S1-02442415000 as the confirmed OEM replacement. The S1-02427531000 (1 Pole Contactor w/ Shunt, 24V, 30A) remains available as a separate SKU for applications where the shunt configuration is specifically required by the unit's wiring.

What is the 2PNO Contactor S1-024-32004-000 and which York units does it fit?

The York S1-024-32004-000 is a 2PNO (two-pole, normally open) Contactor with a 24V coil and 30A load rating. The 2PNO designation confirms both poles are normally open, meaning both legs of the load circuit are de-energized when the coil is not pulled in. The S1-024-32004-000 is confirmed for use with York BACB (180-240), DBUC (180-240), DCHB (090-120), DCUC (090-102), DDHB (150), DDUC (150), and PCM (090-120) equipment model series. Confirming the York unit model falls within those series designations before ordering is required.

What is the York Aux. Contact Block 024-35493-000 and when is the S1-024-35798-000 specified?

The York Aux. Contact Block (SKU 024-35493-000) is an OEM accessory that adds low-current auxiliary switching contacts to a main York contactor assembly, enabling the contactor's open or closed position to signal staging circuits, interlocks, or fault monitoring logic in commercial York HVAC systems. The 3-4 Pole Contactor w/ Auxiliary (277V, 30-60A), SKU S1-024-35798-000, is a standalone OEM York contactor with auxiliary contacts already integrated, rated for 277V commercial applications across a 30A to 60A load range. The S1-024-35798-000 is the correct specification when the York commercial unit requires a 277V coil contactor with built-in auxiliary contact capability rather than adding the 024-35493-000 block to a separate main contactor.