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.
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Showing 1–48 of 62 results
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LIMIT SWITCH626458R – DOUBLE STACK LIMIT SWITCH (L190°)
SKU · 626458$42.58Nordyne 626458R double-pole limit switch, opens at 190°F. Dual-stack design for Nordyne, Miller, and Intertherm furnaces. Also listed as 626458.
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LIMIT SWITCHHH12ZB160 – HIGH LIMIT SWITCH (3″, L160°)
SKU · SWT01257$41.90Carrier HH12ZB160 high limit switch, 3-inch insertion, opens at 160°F. Auto reset. Crosses to Trane SWT01257. For Carrier, Bryant, Payne, and Trane furnaces.
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LIMIT SWITCHMML230 – MANUAL LIMIT SWITCH (MICRO, 230°)
SKU · PRL230$14.97Manual 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.
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LIMIT SWITCHHH18HA416 – MANUAL LIMIT SWITCH (MICRO, LARGE BASE, L215°)
SKU · L215$27.18Carrier HH18HA416 manual reset limit switch, opens at 215°F. Large base, micro size. OEM replacement for Carrier, Bryant, and Payne furnaces.
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LIMIT SWITCH5D51-35 – FAN & LIMIT CONTROL (5″)
SKU · L4064B2228$161.37Honeywell L4064B2228 fan and limit control with 5-inch element. Adjustable fan differential and fixed high-limit safety cutoff. For older furnaces without electronic controls.
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LIMIT SWITCH47-22861-03 – LIMIT SWITCH (RHEEM, MICRO, WIDE MOUNT, L250°)
SKU · 47-22861-03$15.93Rheem 47-22861-03 manual reset limit switch, opens at 250°F. Wide mount, micro size. OEM flame rollout switch for Rheem and Ruud furnaces.
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LIMIT SWITCHSLS150 – AUTO LIMIT SWITCH (MICRO, L150°)
SKU · MAL150$15.01Supco SLS150 auto reset micro limit switch, opens at 150°F, closes at 110°F. Compact design with angled terminals. Universal fit for furnaces and unit heaters.
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LIMIT SWITCHSHL513 – HIGH TEMPERATURE LIMIT SWITCH (3″, L170°)
SKU · HH12ZB170$35.14Supco SHL513 high limit switch, 3-inch insertion, opens at 170°F, closes at 130°F. Auto reset. Crosses to Carrier HH12ZB170. Universal furnace fit.
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LIMIT SWITCHSHL522 – HIGH TEMPERATURE LIMIT SWITCH (7″, L160°)
SKU · SHL522$35.14Supco SHL522 high limit switch, 7-inch insertion, opens at 160°F, closes at 140°F. Auto reset. Crosses to Goodman B1370908/B13709-08. Direct Goodman replacement.
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LIMIT SWITCHSHL518 – HIGH TEMPERATURE LIMIT SWITCH (3″, L250°)
SKU · SHL518$35.14Supco SHL518 high limit switch, 3-inch insertion, opens at 250°F, closes at 210°F. Auto reset. Crosses to Carrier HH12ZB250. Universal furnace replacement.
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LIMIT SWITCHHH18HA499 – AUTO LIMIT SWITCH (MICRO, LARGE BASE, L165°)
SKU · HH18HA499$24.44Carrier 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.
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LIMIT SWITCHHH12ZB140 – HIGH LIMIT SWITCH (3″, L140°)
SKU · HH12ZB140$35.18Carrier HH12ZB140 high limit switch, 3-inch insertion, opens at 140°F. Auto reset. Crosses to Supco SHL507, Trane SWT01276. Universal 3-inch L140 replacement.
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LIMIT SWITCHSHL517 – HIGH TEMPERATURE LIMIT SWITCH (3″, L220°)
SKU · HH12ZB220$35.14Supco SHL517 high limit switch, 3-inch insertion, opens at 220°F, closes at 180°F. Auto reset. Crosses to Carrier HH12ZB220 and Lennox 29M75.
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LIMIT SWITCH626404R – DOUBLE STACK LIMIT SWITCH (L145°)
SKU · 626404R$41.93Nordyne 626404R double-pole limit switch, opens at 145°F. Dual-stack design for Nordyne, Miller, and Intertherm furnaces. Also listed as 626404.
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LIMIT SWITCHB1370108 – MANUAL LIMIT SWITCH (MICRO, LARGE BASE, L300°)
SKU · B1370108$19.60Goodman B1370108 manual reset rollout limit switch, opens at 300°F. Large base, micro size. OEM safety switch for Goodman/Amana furnaces.
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LIMIT SWITCHS1-025-35362-000 – LIMIT SWITCH (3″, L200°, ODD BASE)
SKU · S1-02535362000$89.00York 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.
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LIMIT SWITCHSHL516 – HIGH TEMPERATURE LIMIT SWITCH (3″, L210°)
SKU · SHL516$35.02Supco SHL516 high limit switch, 3-inch insertion, opens at 210°F, closes at 170°F. Auto reset. Crosses to Carrier HH12ZB210, Rheem 47-102473-04, and more.
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LIMIT SWITCH5D51-78 – FAN & LIMIT CONTROL (11″)
SKU · 5D51-78$167.57Honeywell L4064B2210 fan and limit control with 11-inch element. Adjustable fan differential and fixed high-limit safety cutoff. For older furnaces without electronic controls.
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LIMIT SWITCHSHL515 – HIGH TEMPERATURE LIMIT SWITCH (3″, L200°)
SKU · SHL515$35.14Supco SHL515 high limit switch, 3-inch insertion, opens at 200°F, closes at 160°F. Auto reset. Crosses to Carrier HH12ZB200. Universal furnace replacement.
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LIMIT SWITCHSHL525 – HIGH TEMPERATURE LIMIT SWITCH (7″, L180°)
SKU · SHL525$35.14Supco SHL525 high limit switch, 7-inch insertion, opens at 180°F, closes at 160°F. Auto reset. Universal 7-inch probe replacement for furnaces.
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LIMIT SWITCHB1370115 – HEAT KIT LIMIT SWITCH (L150°)
SKU · B1370115$23.64Goodman B1370115 heat kit limit switch, opens at 150°F. Protects electric heat strips in Goodman/Amana air handlers from overheating. OEM replacement part.
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LIMIT SWITCHHH18HA449 – MANUAL LIMIT SWITCH (MICRO, LARGE BASE, L350°)
SKU · HH18HA449$36.67Carrier 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.
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LIMIT SWITCHSLS300 – AUTO LIMIT SWITCH (MICRO, L300°)
SKU · MAL300$15.25Supco SLS300 auto reset rollout switch, opens at 300°F, closes at 250°F. Compact micro size with angled terminals. Used as a flame rollout safety switch.
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LIMIT SWITCHHH18HA148 – AUTO LIMIT SWITCH (MICRO, LARGE BASE, L150°)
SKU · HH18HA148$23.61Carrier HH18HA148 auto reset limit switch, opens at 150°F. Large base, micro size. Crosses to 20162904S. OEM for Carrier, Bryant, and Payne systems.
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LIMIT SWITCHHH18HA493 – AUTO LIMIT SWITCH (MICRO, WIDE MOUNT, L200°)
SKU · HH18HA493$23.88Carrier 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.
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LIMIT SWITCH47-104990-04 – HIGH TEMPERATURE LIMIT SWITCH (3″, ODD BASE, L150°)
SKU · 47-104990-04$34.19Rheem 47-104990-04 high limit switch, 3-inch insertion, odd base, opens at 150°F. Auto reset. OEM replacement for Rheem and Ruud furnaces.
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LIMIT SWITCH47-25349-03 – HIGH TEMPERATURE LIMIT SWITCH (3″, ODD BASE, L150°)
SKU · 47-25349-03$29.48Rheem 47-25349-03 high limit switch, 3-inch insertion, odd base, opens at 150°F. Auto reset. OEM replacement for Rheem and Ruud furnaces.
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LIMIT SWITCHHH18HA495 – MANUAL LIMIT SWITCH (MICRO, TEARDROP, L350°, 1177033)
SKU · HH18HA495$22.09Carrier HH18HA495 manual reset limit switch, opens at 350°F. Teardrop mount. Crosses to 1177033. OEM flame rollout switch for Carrier, Bryant, and Payne.
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LIMIT SWITCHMML260 – MANUAL LIMIT SWITCH (MICRO, 260°)
SKU · PRL260$14.97Manual reset micro limit switch, opens at 260°F. Push-button reset after trip. Replaces Supco SRL260 and Packard PRL260. Universal fit for residential furnaces.
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LIMIT SWITCHS1-02532606000 – LIMIT SWITCH (3″, ODD BASE, L210°)
SKU · S1-02532606000$45.04York S1-02532606000 high limit switch, 3-inch insertion, odd base, opens at 210°F, closes at 180°F. OEM auto-reset limit for York furnaces.
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LIMIT SWITCHAT012 – ADJUSTABLE DISC LIMIT SWITCH (135° to 175°)
SKU · ELE-AT012$22.91Supco AT012 adjustable disc limit switch, 135°F to 175°F range. SPST open-on-rise. Crosses to E144 and PT012. Universal fit for furnaces and heating equipment.
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LIMIT SWITCHHH12ZB260 – HIGH LIMIT SWITCH (3″, L260°)
SKU · HH12ZB260$40.34Carrier HH12ZB260 high limit switch, 3-inch insertion, opens at 260°F. Auto reset. Crosses to Trane SWT01261. For Carrier, Trane, and other brand furnaces.
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LIMIT SWITCHSLS180 – AUTO LIMIT SWITCH (MICRO, L180°)
SKU · MAL180$15.01Supco SLS180 auto reset micro limit switch, opens at 180°F, closes at 140°F. Crosses to Nordyne 626563 and 626614. Universal fit for furnaces and heaters.
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LIMIT SWITCHSHL508 – HIGH TEMPERATURE LIMIT SWITCH (3″, L190°)
SKU · SHL508$35.14Supco SHL508 high limit switch, 3-inch insertion, opens at 190°F, closes at 170°F. Auto reset. Crosses to Carrier HH12ZB190 and Trane SWT01259.
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LIMIT SWITCHHH18HA452 – MANUAL LIMIT SWITCH (MICRO, LARGE BASE, L250°)
SKU · HH18HA452$26.00Carrier HH18HA452 manual reset rollout limit switch, opens at 250°F. Large base, micro size. OEM flame rollout switch for Carrier, Bryant, and Payne furnaces.
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LIMIT SWITCHSLS200 – AUTO LIMIT SWITCH (MICRO, L200°)
SKU · MAL200$15.01Supco SLS200 auto reset micro limit switch, opens at 200°F, closes at 160°F. Compact design with angled terminals. Universal fit for furnaces and unit heaters.
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LIMIT SWITCHSLS160 – AUTO LIMIT SWITCH (MICRO, L160°)
SKU · MAL160$15.01Supco SLS160 auto reset micro limit switch, opens at 160°F, closes at 120°F. Compact design with angled terminals. Universal fit for furnaces and unit heaters.
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LIMIT SWITCHAT014 – ADJUSTABLE DISC LIMIT SWITCH (210° to 250°)
SKU · ELE-AT014$22.91Supco AT014 adjustable disc limit switch, 210°F to 250°F range. SPST open-on-rise. Crosses to PT014. Universal fit for furnaces and heating equipment.
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LIMIT SWITCHHH18HA507 – AUTO LIMIT SWITCH (MICRO, LARGE BASE, L185°)
SKU · L185$26.66Carrier 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.
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LIMIT SWITCHSLS170 – AUTO LIMIT SWITCH (MICRO, L170°)
SKU · MAL170$15.01Supco SLS170 auto reset micro limit switch, opens at 170°F, closes at 130°F. Compact design with angled terminals. Universal fit for furnaces and unit heaters.
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LIMIT SWITCHB1370110 – MANUAL LIMIT SWITCH (MICRO, LARGE BASE, 330°)
SKU · B1370110$19.67Goodman B1370110 manual reset rollout limit switch, opens at 330°F. Large base, micro size. OEM flame rollout safety switch for Goodman/Amana furnaces.
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LIMIT SWITCHMML135 – MANUAL LIMIT SWITCH (MICRO, 135°)
SKU · PRL135$14.97Manual 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.
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LIMIT SWITCHSHL514 – HIGH TEMPERATURE LIMIT SWITCH (3″, L180°)
SKU · SHL514$35.14Supco SHL514 high limit switch, 3-inch insertion, opens at 180°F, closes at 140°F. Auto reset. Crosses to Carrier HH12ZB180. Universal furnace replacement.
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LIMIT SWITCHMML250 – MANUAL LIMIT SWITCH (MICRO, 250°)
SKU · PRL250$14.97Manual 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.
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LIMIT SWITCHMML300 – MANUAL LIMIT SWITCH (MICRO, L300°)
SKU · PRL300$16.26Manual 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.
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LIMIT SWITCHMML240 – MANUAL LIMIT SWITCH (MICRO, 240°)
SKU · PRL240$14.97Manual 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.
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LIMIT SWITCH47-22860-02 – AUTO LIMIT SWITCH WITH ANTICIPATOR (RHEEM, L110°)
SKU · 47-22860-02$28.60Rheem 47-22860-02 auto reset limit switch with built-in anticipator, opens at 110°F. Replaces 47-22860-06. OEM for Rheem and Ruud furnaces.
Showing 48 of 62 parts
Signs You May Need a New Limit Switch
Limit switches are safety devices inside your furnace that monitor temperature. The high-limit switch shuts off burners if the heat exchanger gets too hot. The fan limit switch controls when the blower turns on and off.
Furnace Shuts Off Before Home Reaches Temperature▼
- The furnace lights and runs but shuts off after a few minutes.
- The high-limit switch may be tripping due to overheating.
- Common causes: dirty filter restricting airflow, failed blower motor, or a faulty switch.
Always check the air filter first. A clogged filter is the #1 reason a high-limit switch trips.
Blower Fan Won't Turn On or Won't Turn Off▼
- The furnace heats but the blower never starts to distribute warm air.
- Or the blower runs continuously and won't shut off after the heating cycle.
- The fan limit switch controls blower timing — when it fails, blower behavior becomes erratic.
Furnace Short-Cycles Repeatedly▼
- The furnace starts, runs for a few minutes, shuts off, then restarts.
- This continuous cycling often means the limit switch is tripping on high temperature.
- If the filter is clean and the blower is working, the limit switch itself may be faulty.
Not sure which part you need? Bring your old part to our Dallas store — our team will test it for free and help you find the right replacement.
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📞 (214) 340-9421Mon–Fri 10 am – 7 pm | Sat 10 am – 3 pm