Trane SWT03921 Low Pressure Control Switch, Opens 35 PSI / Closes 55 PSI
$116.41
Low Pressure Control Switch, Opens 35 PSI / Closes 55 PSI. Trane part SWT03921; sold each. Match model and original part number before ordering.
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Description
Trane SWT03921 Low Pressure Control Switch, Opens 35 PSI / Closes 55 PSI. Pressure control service part for compatible Trane HVAC equipment. Sold individually (each).
Product specifications
| Manufacturer | Trane |
|---|---|
| Manufacturer part number | SWT03921 |
| Part details | Low Pressure Control Switch, Opens 35 PSI / Closes 55 PSI |
| Units | Each |
| Catalog-listed dimensions | 5 × 5 × 4.25 in (L × W × H) / 12.70 × 12.70 × 10.80 cm |
| Catalog-listed weight | 1 lbs |
Contact configuration: SPST. Number of poles: 1.
Compatibility
Match the exact equipment model, serial number and original part number before ordering.
Catalog dimensions and weight may describe packaging; confirm installed clearances separately. Availability and dispatch timing are confirmed for each order.
Specifications reference: Parts Town SWT03921 product details, checked October 10, 2026.
Additional information
| Weight | 1 lbs |
|---|---|
| Dimensions | 5 × 5 × 4.25 in |
| Catalog dimensions (L × W × H) | 5 × 5 × 4.25 in (L × W × H) |
| Part specifications | Low Pressure Control Switch, Opens 35 PSI / Closes 55 PSI |
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