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.
HH18HA505 – LIMIT SWITCH
$23.59
Carrier HH18HA505 auto reset limit switch, opens at 235°F, closes at 195°F. OEM replacement for Carrier, Bryant, and Payne 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 is a Carrier OEM auto-reset limit switch — opens at 235°F and automatically resets when temperature drops back to 195°F. No button to push — it handles itself. Used across Carrier, Bryant, and Payne furnaces.
Specs: Opens at 235°F, closes at 195°F, auto reset, SPST
Replaces: HH18HA505
Fits: Carrier, Bryant, and Payne furnaces that call for part number HH18HA505. Bring your model number — we’ll confirm at the counter.
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.
