Nordyne 632444R -1.74"WC SPST Pressure Switch (replaces 632252)
An OEM -1.74" water column SPST pressure switch for Nordyne HVAC equipment, used as a replacement safety/operating switch where the unit calls for this exact part number.
Key Features:
- Official OEM pressure switch for Nordyne HVAC equipment
- Switch type: SPST (as named on the product listing)
- Setpoint: -1.74" water column ("WC)
- Product type: Pressure Switch
- Replaces: 632252
Compatibility & Applications:
- Listed as an OEM pressure switch for Nordyne HVAC equipment (model-specific compatibility is not listed on the page).
- Must only be used where the manufacturer specifies this exact part number: 632444R (or explicitly lists it as the approved replacement for 632252).
Installation & Operation Notes:
- Installation should be performed by a qualified HVAC service technician.
- The provided sources do not include installation instructions for hose routing/port connections for this switch.
- Reference the furnace/unit's service/installation manual and the unit's original hose routing to ensure correct reconnection.
Maintenance & Troubleshooting:
- User reviews commonly connect replacement to restoring furnace operation when a pressure switch "went out" or the furnace wasn't running, with reports of immediate return to normal operation after installing the correct switch.
- If the unit still fails after replacement, the sources do not provide diagnostics; follow the unit's troubleshooting steps in the service documentation (pressure switch issues can be caused by upstream venting/inducer/condensate or tubing problems, which must be diagnosed per the unit manual).
User Reviews & Q&A Summary:
- Reviews frequently describe: correct fit/exact replacement, easy install, and the furnace working again after replacement.
- Common positive themes include fast delivery and strong customer service.
- One negative review on the page appears unrelated to this pressure switch (it discusses a different "heater" missing a valve).
- Q&A: One question asks which hose connects to which port; the response states installation instructions are not available from the seller for this part.