☀️ AC Season Is Here — Capacitors, Contactors & Motors In Stock. Browse Parts or Call (214) 340-9421
📞 (214) 340-9421 | Mon–Fri 10–7 • Sat 10–3 | ⭐ 4.9 (512 reviews) | ¿Hablas español? | Get Directions

Switches & Sensors

Switches and sensors are the safety backbone of your HVAC system. Shop flame sensors, pressure switches, limit switches, sail switches, temperature sensors, and time-delay relays at our Dallas HVAC parts store.When your furnace locks out or your AC short-cycles, a faulty switch or sensor is often the culprit. Bring in the old part or your unit’s model number and we’ll get you the right match. Browse our repair tutorials for diagnostic help. Serving Dallas-Fort Worth homeowners and contractors.

Need help finding the right part?
We test parts at the counter and match the right replacement. Walk in or call ahead.
☎ Call (214) 340-9421 📍 Get Directions Mon–Fri 10–7  |  Sat 10–3
In-Store Pickup Only — Browse our catalog below, then visit us in Dallas or call (214) 340-9421 to purchase.
All
Air Distribution ▼
AIR GRILLES & REGISTERSB-VENT (DOUBLEWALL)DUCT FANDUCTINGINSULATIONSHEET METAL
Electrical Components ▼
CAPACITORCIRCUIT BREAKERCONDUITCONTACTORCONTROL BOARDFAN RELAYFUSESURGE PROTECTORTIME DELAY RELAYTRANSFORMERWIRE
Equipment & Systems ▼
CONDENSATE PUMPEQUIPMENTEQUIPMENT MOUNTMINISPLIT ACCESSORIES
Filters & Air Quality ▼
AIR FILTERCHEMICALSUV LIGHT
Furnace & Heating ▼
GAS VALVEIGNITOR - FURNACE
Motors & Blower Parts ▼
BLOWER MOTORBLOWER WHEELCONDENSER MOTORFAN BLADEINDUCER MOTORMOTOR MOUNT
Refrigeration ▼
COMPRESSORDRIER - REFRIGERANTEXPANSION VALVEPISTONREFRIGERANTREVERSING VALVESERVICE VALVESIGHTGLASS
Switches & Sensors ▼
DOOR SWITCHDRAIN SAFETY SWITCHFLAME SENSORHEAT SEQUENCERLIMIT SWITCHPRESSURE SWITCH - FURNACEPRESSURE SWITCH - REFRIGERANTTHERMAL LIMIT
Thermostats & Zone Controls ▼
THERMOSTATZONE SYSTEM
Tools & Supplies ▼
1/4" SERVICE CAPADHESIVEBRAZING CONSUMABLESCEILING ACCESS PANELCOPPERFASTERNERGAS PIPEOILPLASTIC DRAIN PANPVCSERVICE DISCONNECTSUPPLIESTOOLS
All parts 1,291Equipment & Systems 67Filters & Air Quality 83Air Distribution 259Furnace & Heating 39Refrigeration 67Thermostats & Zone Controls 17Switches & Sensors 132Electrical Components 224Motors & Blower Parts 129Tools & Supplies 276
REFINELIMIT SWITCH 62FLAME SENSOR 19PRESSURE SWITCH - FURNACE 17HEAT SEQUENCER 15PRESSURE SWITCH - REFRIGERANT 10DRAIN SAFETY SWITCH 4DOOR SWITCH 4THERMAL LIMIT 1

Showing 49–96 of 132 results

  • Low StockB1370126 - FURNACE PRESSURE SWITCH (-0.40PF)
    UNIVERSAL

    B1370126 – FURNACE PRESSURE SWITCH (-0.40PF)

    SKU · B1370126
    $49.06

    Goodman B1370126 furnace pressure switch, -0.40″ WC. OEM replacement for Goodman furnaces. Also replaces 20055506 and R102614-01.

  • In StockB1370133 - FURNACE PRESSURE SWITCH (-0.35PR)
    UNIVERSAL

    B1370133 – FURNACE PRESSURE SWITCH (-0.35PR)

    SKU · B1370133
    $49.06

    Goodman B1370133 furnace pressure switch, -0.35″ WC. OEM replacement for Goodman gas furnaces. Monitors inducer draft for safe ignition.

  • Low StockB1370176 - FURNACE PRESSURE SWITCH (-0.47PR)
    UNIVERSAL

    B1370176 – FURNACE PRESSURE SWITCH (-0.47PR)

    SKU · B1370176
    $47.23

    Goodman B1370176 furnace pressure switch, -0.47″ WC. OEM replacement for Goodman gas furnaces. Verifies proper inducer draft before ignition.

  • Low StockB1370819 - FURNACE DOOR SWITCH
    GOODMAN

    B1370819 – DOOR INTERLOCK SWITCH (GOODMAN)

    SKU · B1370819
    $23.94

    Goodman B1370819 furnace door safety switch. Kills power when the furnace access panel is removed. Prevents the blower and burner from running during maintenance.

  • In StockBG-301 - FLOAT SWITCH (PRIMARY, ELBOW)
    UNIVERSAL

    BG-301 – FLOAT SWITCH (PRIMARY, ELBOW)

    SKU · BG301
    $22.97

    BG-301 primary float switch with 90-degree elbow fitting. Installs inline on your AC condensate drain line. Shuts off the system if the drain clogs to prevent overflow.

  • In StockBG101 - FLOAT SWITCH (SECONDARY, PAN CLIP)
    UNIVERSAL

    BG101 – FLOAT SWITCH (SECONDARY, PAN CLIP)

    SKU · BG101
    $21.24

    BG-101 secondary float switch with pan clip mount. Clips to the secondary drain pan and shuts off your AC if the pan fills with water. Prevents overflow damage.

  • In StockFPS-T - FLOAT SWITCH (INLINE TEE ELBOW)
    UNIVERSAL

    FPS-T – FLOAT SWITCH (INLINE TEE & ELBOW)

    SKU · FPSC5001U
    $23.84

    FPS-T inline float switch with tee and elbow fittings. Installs on your AC condensate drain line. Shuts off the system if the drain clogs. Magnetic reed design.

  • In StockFSC5002U - FLOAT SWITCH
    UNIVERSAL

    FSC5002U – FLOAT SWITCH

    SKU · FSC5002U
    $14.50

    Rheem FSC5002U pan-mount float switch. Mounts directly to the drain pan with a magnetic float trigger. Shuts off your AC if the pan fills up. Simple and reliable.

  • Low StockHH12ZB140 - HIGH LIMIT SWITCH (3, L140°)
    UNIVERSAL

    HH12ZB140 – HIGH LIMIT SWITCH (3″, L140°)

    SKU · HH12ZB140
    $35.18

    Carrier HH12ZB140 high limit switch, 3-inch insertion, opens at 140°F. Auto reset. Crosses to Supco SHL507, Trane SWT01276. Universal 3-inch L140 replacement.

  • Low StockHH12ZB150 - HIGH LIMIT SWITCH (3, L150°)
    UNIVERSAL

    HH12ZB150 – HIGH LIMIT SWITCH (3″, L150°)

    SKU · HH12ZB150
    $39.47

    Carrier HH12ZB150 high limit switch, 3-inch insertion, opens at 150°F. Auto reset. Crosses to Trane SWT01280. For Carrier, Bryant, Payne, and Trane furnaces.

  • In StockHH12ZB160 - HIGH LIMIT SWITCH (3, L160°)
    UNIVERSAL

    HH12ZB160 – HIGH LIMIT SWITCH (3″, L160°)

    SKU · SWT01257
    $41.90

    Carrier HH12ZB160 high limit switch, 3-inch insertion, opens at 160°F. Auto reset. Crosses to Trane SWT01257. For Carrier, Bryant, Payne, and Trane furnaces.

  • Low StockHH12ZB260 - HIGH LIMIT SWITCH (3, L260°)
    UNIVERSAL

    HH12ZB260 – HIGH LIMIT SWITCH (3″, L260°)

    SKU · HH12ZB260
    $40.34

    Carrier HH12ZB260 high limit switch, 3-inch insertion, opens at 260°F. Auto reset. Crosses to Trane SWT01261. For Carrier, Trane, and other brand furnaces.

  • In StockHH18HA148 - AUTO LIMIT SWITCH (MICRO, LARGE BASE, L150°)
    UNIVERSAL

    HH18HA148 – AUTO LIMIT SWITCH (MICRO, LARGE BASE, L150°)

    SKU · HH18HA148
    $23.61

    Carrier HH18HA148 auto reset limit switch, opens at 150°F. Large base, micro size. Crosses to 20162904S. OEM for Carrier, Bryant, and Payne systems.

  • Low StockHH18HA416 - LIMIT SWITCH (MICRO, LARGE BASE, L215MR)
    UNIVERSAL

    HH18HA416 – MANUAL LIMIT SWITCH (MICRO, LARGE BASE, L215°)

    SKU · L215
    $27.18

    Carrier HH18HA416 manual reset limit switch, opens at 215°F. Large base, micro size. OEM replacement for Carrier, Bryant, and Payne furnaces.

  • Low StockHH18HA449 - MANUAL LIMIT SWITCH (MICRO, LARGE BASE, L350°)
    UNIVERSAL

    HH18HA449 – MANUAL LIMIT SWITCH (MICRO, LARGE BASE, L350°)

    SKU · HH18HA449
    $36.67

    Carrier HH18HA449 manual reset limit switch, opens at 350°F. Large base, micro size. Used as a flame rollout switch on Carrier, Bryant, and Payne furnaces.

  • In StockHH18HA452 - MANUAL LIMIT SWITCH (MICRO, LARGE BASE, L250°)
    UNIVERSAL

    HH18HA452 – MANUAL LIMIT SWITCH (MICRO, LARGE BASE, L250°)

    SKU · HH18HA452
    $26.00

    Carrier HH18HA452 manual reset rollout limit switch, opens at 250°F. Large base, micro size. OEM flame rollout switch for Carrier, Bryant, and Payne furnaces.

  • Low StockHH18HA461 - MANUAL LIMIT SWITCH (MICRO, LARGE BASE, L160°)
    UNIVERSAL

    HH18HA461 – MANUAL LIMIT SWITCH (MICRO, LARGE BASE, L160°)

    SKU · HH18HA461
    $25.61

    Carrier HH18HA461 manual reset limit switch, opens at 160°F. Large base, micro size. Also crosses to HH18HA167. OEM for Carrier, Bryant, and Payne systems.

  • Low StockHH18HA493 - AUTO LIMIT SWITCH (MICRO, WIDE MOUNT, L200°)
    UNIVERSAL

    HH18HA493 – AUTO LIMIT SWITCH (MICRO, WIDE MOUNT, L200°)

    SKU · HH18HA493
    $23.88

    Carrier HH18HA493 auto reset limit switch, opens at 200°F, closes at 101°F. Wide mount, micro size. Crosses to 1176902. OEM for Carrier, Bryant, and Payne.

  • Low StockHH18HA495 - MANUAL LIMIT SWITCH (MICRO, TEARDROP, L350°, 1177033)
    UNIVERSAL

    HH18HA495 – MANUAL LIMIT SWITCH (MICRO, TEARDROP, L350°, 1177033)

    SKU · HH18HA495
    $22.09

    Carrier HH18HA495 manual reset limit switch, opens at 350°F. Teardrop mount. Crosses to 1177033. OEM flame rollout switch for Carrier, Bryant, and Payne.

  • Low StockHH18HA498 - LIMIT SWITCH (210, AUTO)
    UNIVERSAL

    HH18HA498 – AUTO LIMIT SWITCH (MICRO, LARGE BASE, L210°)

    SKU · HH18HA498
    $22.97

    Carrier HH18HA498 auto-reset limit switch. Micro size with large base, opens at 210°F. Shuts off the furnace burner if the heat exchanger gets too hot.

  • Low StockHH18HA499 - AUTO LIMIT SWITCH (MICRO, LARGE BASE, L165°)
    UNIVERSAL

    HH18HA499 – AUTO LIMIT SWITCH (MICRO, LARGE BASE, L165°)

    SKU · HH18HA499
    $24.44

    Carrier HH18HA499 auto reset limit switch, opens at 165°F, closes at 125°F. Large base, micro size. Crosses to HH18HA169, HH18HA508, 20162903. OEM Carrier part.

  • Low StockHH18HA505 - LIMIT SWITCH
    UNIVERSAL

    HH18HA505 – LIMIT SWITCH

    SKU · L235
    $23.59

    Carrier HH18HA505 auto reset limit switch, opens at 235°F, closes at 195°F. OEM replacement for Carrier, Bryant, and Payne furnaces.

  • Low StockHH18HA507 - LIMIT SWITCH (L185, LARGE BASE MICRO)
    UNIVERSAL

    HH18HA507 – AUTO LIMIT SWITCH (MICRO, LARGE BASE, L185°)

    SKU · L185
    $26.66

    Carrier HH18HA507 auto reset limit switch, opens at 185°F, closes at 145°F. Large base, micro size. OEM replacement for Carrier, Bryant, and Payne furnaces.

  • Low StockHK06WC069 - PRESSURE SWITCH (-0.27PF, 1176957)
    UNIVERSAL

    HK06WC069 – FURNACE PRESSURE SWITCH (-0.27PF, 1176957)

    SKU · HK06WC069
    $70.56

    Carrier HK06WC069 furnace pressure switch, -0.27″ WC. OEM for Carrier, Bryant, and Payne furnaces. Replaces 1176957 and HK06WC091. Also listed as NS2-1600-00.

  • Low StockHK61EA033 - RECTIFIER BOARD (1186788)
    CARRIER

    HK61EA033 – RECTIFIER BOARD (1186788)

    SKU · 1186788
    $52.72

    Carrier/Bryant/Payne rectifier board. Converts AC to DC for relay control in electric heat systems. OEM part HK61EA033, replaces older HK61EA003.

  • In StockHN61PC003 - RELAY (CARRIER, DC, 1172506)
    CARRIER

    HN61PC003 – RELAY (CARRIER, DC, 1172506)

    SKU · 1172506
    $43.82

    24V DPST relay with 30-amp capacity. OEM Carrier/Bryant/Payne part HN61PC003. Replaces older HN61PC002 and cross-reference T92S7D22-24.

  • In StockHS1P1S - HEAT SEQUENCER (SPST, Q101)
    UNIVERSAL

    HS1P1S – HEAT SEQUENCER (SPST, Q101)

    SKU · NS101
    $27.35

    24V SPST heat sequencer (1 switch). Supco Q101. Basic single-stage sequencer for electric furnaces. Controls one heating element or blower.

  • In StockHS1P2S - HEAT SEQUENCER (SPST, Q102)
    UNIVERSAL

    HS1P2S – HEAT SEQUENCER (SPST, Q102)

    SKU · NS102
    $28.40

    24V SPST heat sequencer (1 switch). Supco Q102. Longer delay timing than Q101. Controls one heating element or blower in electric furnaces.

  • In StockHS2P1S - HEAT SEQUENCER (DPDT, Q103)
    UNIVERSAL

    HS2P1S – HEAT SEQUENCER (DPDT, Q103)

    SKU · Q103
    $29.45

    24V DPDT heat sequencer (2 switches). Supco Q103. Controls a heating element and a blower motor on timed delays. Replaces 24A34-3.

  • In StockHS2P2S - HEAT SEQUENCER (DPDT, Q104)
    UNIVERSAL

    HS2P2S – HEAT SEQUENCER (DPDT, Q104)

    SKU · Q104
    $29.45

    24V DPDT heat sequencer (2 switches). Supco Q104. Different delay timing than Q103. Replaces HS24A344, Emerson E143, and NS104.

  • In StockHS3P1S - HEAT SEQUENCER (HS24A345, DPST-SPST)
    UNIVERSAL

    HS3P1S – HEAT SEQUENCER (HS24A345, DPST-SPST)

    SKU · Q105
    $41.81

    24V heat sequencer with 1 DPST and 1 SPST relay in series. Handles up to 25 amps. Replaces Nordyne 621678 and HS24A345. Common electric furnace part.

  • In StockHS4P1S - HEAT SEQUENCER (HS24A346, 2 DPDT)
    UNIVERSAL

    HS4P1S – HEAT SEQUENCER (HS24A346, 2 DPDT)

    SKU · Q106
    $42.40

    24V heat sequencer with two DPDT relays in series. Handles up to 25 amps. Replaces HS24A346. For electric furnaces with multi-stage heating elements.

  • In StockLH680534 - FLAME SENSOR (CARRIER, AFTERMARKET, DIRECT, FLS014)
    UNIVERSAL

    LH680534 – FLAME SENSOR (CARRIER, AFTERMARKET, DIRECT, FLS014)

    SKU · FLS014
    $23.44

    Carrier flame sensor replacement (LH680534). Aftermarket direct fit with 73-degree bend and Kanthal rod. Replaces LH33WZ515, LH33WZ517, LH33WZ521, and more.

  • In StockMML130 - MANUAL LIMIT SWITCH (130°)
    UNIVERSAL

    MML130 – MANUAL LIMIT SWITCH (MICRO, 130°)

    SKU · PRL130
    $14.97

    Manual reset micro limit switch, opens at 130°F. Push-button reset after trip. Universal replacement for Supco SRL130 and Packard PRL130. Used in furnaces and heaters.

  • In StockMML135 - MANUAL LIMIT SWITCH (135°)
    UNIVERSAL

    MML135 – MANUAL LIMIT SWITCH (MICRO, 135°)

    SKU · PRL135
    $14.97

    Manual reset micro limit switch, opens at 135°F. Push-button reset after trip. Universal replacement for Supco SRL135 and Packard PRL135. Common in furnaces and unit heaters.

  • In StockMML220 - MANUAL LIMIT SWITCH (220°)
    UNIVERSAL

    MML220 – MANUAL LIMIT SWITCH (MICRO, 220°)

    SKU · PRL220
    $14.97

    Manual reset micro limit switch, opens at 220°F. Push-button reset after trip. Universal replacement — fits most furnaces and heaters using a micro-base L220 switch.

  • In StockMML230 - MANUAL LIMIT SWITCH (230°)
    UNIVERSAL

    MML230 – MANUAL LIMIT SWITCH (MICRO, 230°)

    SKU · PRL230
    $14.97

    Manual reset micro limit switch, opens at 230°F. Push-button reset after trip. Universal replacement for Supco SRL230 and Packard PRL130. Fits most residential furnaces.

  • In StockMML240 - MANUAL LIMIT SWITCH (240°)
    UNIVERSAL

    MML240 – MANUAL LIMIT SWITCH (MICRO, 240°)

    SKU · PRL240
    $14.97

    Manual reset micro limit switch, opens at 240°F. Push-button reset after trip. Universal replacement for Supco SRL240 and Packard PRL240. Fits most furnaces and heaters.

  • In StockMML250 - MANUAL LIMIT SWITCH (250°)
    UNIVERSAL

    MML250 – MANUAL LIMIT SWITCH (MICRO, 250°)

    SKU · PRL250
    $14.97

    Manual reset micro limit switch, opens at 250°F. Push-button reset after trip. Replaces Supco SRL250 and Packard PRL250. Universal fit for furnaces and unit heaters.

  • In StockMML260 - MANUAL LIMIT SWITCH (260°)
    UNIVERSAL

    MML260 – MANUAL LIMIT SWITCH (MICRO, 260°)

    SKU · PRL260
    $14.97

    Manual reset micro limit switch, opens at 260°F. Push-button reset after trip. Replaces Supco SRL260 and Packard PRL260. Universal fit for residential furnaces.

  • In StockMML300 - ROLLOUT LIMIT SWITCH (MICRO, MANUAL, L300)
    UNIVERSAL

    MML300 – MANUAL LIMIT SWITCH (MICRO, L300°)

    SKU · PRL300
    $16.26

    Manual reset micro rollout limit switch, opens at 300°F. Crosses to Goodman B1370145 and York S1-026-34027-000. Fits Goodman, Amana, and York furnaces.

  • In StockMML350 - MANUAL LIMIT SWITCH (350°)
    UNIVERSAL

    MML350 – MANUAL LIMIT SWITCH (MICRO, L350°)

    SKU · PRL350
    $14.97

    Manual reset micro limit switch, opens at 350°F. Commonly used as a flame rollout switch. Replaces 47-22861-01, B1370154, SRL350. Fits Goodman/Rheem furnaces.

  • In StockPFS097 - FLAME SENSOR (LENNOX)
    LENNOX

    PFS097 – FLAME SENSOR (LENNOX, 28M97)

    SKU · PFS097
    $22.60

    Lennox 28M97 flame sensor replacement. Aftermarket direct fit for Lennox, Armstrong, and Ducane furnaces. Single-prong design with ceramic insulator.

  • In StockPR1922 - RELAY (DC)
    CARRIER

    PR1922 – RELAY (DC)

    SKU · PR1922
    $29.33

    22V DC SPST relay for electric heaters in ICP/Heil/Tempstar units. Rated 30A at 28V DC and 40A at 277V AC. Direct replacement for ICP furnaces.

  • Low StockS1-02435271000 - FURNACE PRESSURE SWITCH (-0.50PF)
    UNIVERSAL

    S1-02435271000 – FURNACE PRESSURE SWITCH (-0.50PF)

    SKU · S1-02435271000
    $61.29

    York S1-02435271000 furnace pressure switch, -0.50″ WC. OEM for York, Coleman, and Luxaire furnaces. Replaces 024-27576-000, 49L91, and C341750P01.

  • Low StockS1-025-35362-000 - LIMIT SWITCH (3, L200, ODD BASE)
    UNIVERSAL

    S1-025-35362-000 – LIMIT SWITCH (3″, L200°, ODD BASE)

    SKU · S1-02535362000
    $89.00

    York S1-025-35362-000 auto reset limit switch, opens at 200°F, closes at 170°F. 3-inch insertion, odd base. OEM for York furnaces.

  • In StockS1-02527773700 - FLAME SENSOR (YORK, AFTERMARKET DIRECT, FLS700)
    UNIVERSAL

    S1-02527773700 – FLAME SENSOR (YORK, AFTERMARKET, DIRECT, FLS700)

    SKU · FLS700
    $23.44

    York flame sensor replacement (S1-02527773700). Aftermarket direct fit with 4-inch probe and Kanthal rod. Fits York, Coleman, and Luxaire furnaces.

  • Low StockS1-02530801000 - FLAME SENSOR (YORK)
    YORK

    S1-02530801000 – FLAME SENSOR (YORK)

    SKU · S1-02530801000
    $61.56

    York S1-02530801000 OEM flame sensor for York, Coleman, and Luxaire furnaces. Factory original part with ceramic insulator and stainless rod.

Showing 96 of 132 parts
Call (214) 340-9421