If your furnace is short-cycling, check the filter first — a clogged filter causes the limit switch to trip. If the filter is clean, then the switch itself may be failing.
HH12ZB150 – HIGH LIMIT SWITCH (3″, L150°)
$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.
Mon–Fri 10 am – 7 pm | Sat 10 am – 3 pm | In-Store Pickup Only
Description
If your furnace is short-cycling (turning on and off repeatedly), a failed limit switch may be the cause. This 3-inch high limit switch opens at 150°F and auto-resets once the temperature drops back to safe levels. Direct Carrier OEM part that also crosses to Trane.
Specs: Opens at 150°F, auto reset, 3-inch insertion, SPST
Replaces: HH12ZB150, SWT01280
Fits: Carrier/Bryant/Payne furnaces calling for HH12ZB150; Trane/American Standard models calling for SWT01280. Also fits other brands using a 3-inch L150 high limit switch.
Need help? See our Furnace Short Cycling Guide.
In stock at Open To Public HVAC Parts in Dallas. We test parts at the counter before you buy. Call or text (214) 340-9421.
