York
York S1-02435978000 Air Pressure Switch
Order by 2 PM ET on business days — same-day shipping on in-stock items
🔒 Guaranteed Safe & Secure Checkout
In-stock orders placed by 2 PM ET on business days ship the same day. Free shipping on every continental US order. Estimated delivery 3–5 business days via USPS, UPS, or FedEx (carrier selected at our discretion).
- Same-day shipping on in-stock orders placed by 2 PM ET (business days)
- Estimated delivery 3–5 business days, continental US only
- Tracking emailed within 24 hours
- 30-Day Returns
Product Description
York S1-02435978000 — Air Pressure Switch
Overview
The York S1-02435978000 Air Pressure Switch is a genuine OEM replacement part engineered to restore factory-specified performance in York HVAC systems. Built to the same tolerances as the original S1-02435978000 component, this part ensures reliable operation and a precise drop-in fit. The S1-02435978000 is a trusted choice for HVAC technicians requiring dependable, direct-fit York replacement parts.
Key Features
- SPNO pressure switch rated at -0.67 inches water column for negative-pressure draft proving
- Close-on-fall configuration confirms inducer motor is operating before burner ignition
- OEM genuine direct replacement, no field adjustment required
- Snap-action disc mechanism for consistent, reliable actuation
- Designed for York gas furnace draft safety circuits requiring negative pressure sensing
Technical Specifications
| Specification | Value |
|---|---|
| Type | Air Pressure Switch, Single Pole Normally Open (SPNO) |
| Pressure Rating | -0.67 in WC |
| Configuration | Close on Fall |
| Application | Gas Furnace Draft Proving |
Applications
This part is commonly used in York gas furnaces requiring negative-pressure air pressure switch replacement.
Frequently Asked Questions
What is the York S1-02435978000 used for?
The York S1-02435978000 is used as a direct OEM replacement air pressure switch in York HVAC systems.
How do I confirm the S1-02435978000 is the right fit for my system?
Always verify the part number, voltage, and physical dimensions against your equipment nameplate or original part before ordering.
Where can I buy the York S1-02435978000?
You can buy the genuine York S1-02435978000 directly from coolingpartssupply.com with Free UPS Ground Shipping on all orders.
What is the warranty on the S1-02435978000?
The S1-02435978000 is backed by a 1-year warranty. For warranty support, contact support@coolingpartssupply.com.
Specifications
| Brand | York |
|---|---|
| Product Type | Pressure Controls |
| SKU | S1-02435978000 |
| Condition | New |