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.
SHP425300 – REFRIGERANT HIGH PRESSURE SWITCH (OPEN @ 425 PSI)
$32.05
Supco high-pressure switch — opens at 425 PSI, closes at 300 PSI. 1/4″ SAE flare fitting, auto-reset. Protects compressor from high head pressure.
Mon–Fri 10 am – 7 pm | Sat 10 am – 3 pm | In-Store Pickup Only
Description
A high-pressure switch protects your compressor by shutting the system down if refrigerant pressure gets too high. If your AC keeps shutting off on hot days or after running a short time, a faulty high-pressure switch could be the cause — or it could be doing its job and flagging another problem.
Specs: Opens at 425 PSI, closes at 300 PSI, 1/4″ SAE female flare fitting, automatic reset
Replaces: PHP425300, SHP425300
Fits: Universal — works with most residential and commercial HVAC and refrigeration systems
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.
