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The INTERNATIONAL COMFORT PRODUCTS 1178626 is a genuine OEM high pressure switch designed to protect the refrigeration circuit in cooling systems. When system pressure exceeds safe operating limits, this switch interrupts operation before damage can occur to compressors, coils, or connected components. Rated at 240 volts, it is built to OEM specifications, which reduces the risk of nuisance trips, premature failure, and repeat service calls. HVAC technicians working on residential and light commercial refrigerant systems rely on this switch as a direct OEM replacement that installs correctly the first time.
This high pressure switch is suited for use in split-system and packaged cooling equipment where refrigerant circuit overpressure protection is required. It is confirmed to fit models N4H648GKA101, NH4H448AHA100, and NH4H448ALA100. HVAC service professionals will find this part appropriate for seasonal maintenance, compressor replacement workflows, and refrigerant system repairs where the original switch has failed or is showing signs of erratic cutout behavior.
Confirmed compatible with INTERNATIONAL COMFORT PRODUCTS models N4H648GKA101, NH4H448AHA100, and NH4H448ALA100. Verify the original part number on the switch being replaced before installation.
A licensed HVAC technician should perform this replacement. Before servicing, disconnect all electrical power to the unit at the disconnect box and recover refrigerant per EPA Section 608 requirements if the refrigerant circuit must be opened. Inspect high-side pressure conditions and confirm the cause of switch failure before installing the new part. Verify wiring connections match the original switch terminals and test system operation after reinstallation.
We pulled together the parts most installs need for this unit, plus a few add-ons worth a look. Check what you need — nothing here blocks checkout.
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