Facebook Pixel
Sign-Up Bonus
Get 500 Reward Points instantly when you join.
Redeem Instantly
50 points = $1 off at checkout.
Earn as You Shop
$1 spent = 1 point every time you order.
Member Perks
Unlock exclusive member-only savings and offers.

Register and Earn 500 Reward Points
Toggle Nav
Search
Toggle Nav
Join Our Loyalty Program
main product photo

Trane SWT2521 Pressure Switch SPST 0.94" WC Barb Connection

Be the first to review this product
Special Price $70.12 Regular Price $96.95
In stock
SKU
SWT2521
The Trane SWT2521 is a Pressure Switch, Single Pole Single Throw, which is used in HVAC systems. Schmeing again noted that it functions by detecting alterations in the pressure of air in the system. When the pressure gets to a certain level, the switch turns on a control circuit or turns on a control circuit. This can cause various actions including but not limited to, switching on a fan, opening a damper, or sounding an alarm. It has a 0.94 Water Column working pressure and comes with a barb connection for the convenience of fitting. It is used in such areas as fan pressure control, filter monitoring, and system diagnostics. Advantages are stable work, compact dimensions, and ease of installation and servicing.
Add to Wish List
HVAC Controls & Electrical, Switches, Pressure Switches
Manufacturer:
https://www.partshnc.com/media/catalog/product/s/w/swt2521_1.jpg

Specifications

  • Type: SPST Pressure Switch
  • Connection Type: Barb Connection
  • Pressure Rating: 0.94" Water Column
  • Switch Type: Single Pole Single Throw
Manufacturer Name: Trane
Product Number: SWT2521
OEM Part Number: SWT2521
Product Description: .94"Wc Spst Pressureswbarbconn
Weight:0.3lbs/136.08g

Choose the best HVAC equipment parts and supplies from PartsHnC!

  • Same Day Shipping

  • Best Quality And Best Price

  • Wide Range of Inventory

  • Best Customer Service

Have More Questions or Need Help to Place The Order?
Reach us at (866)773-0907 or [email protected]

Reviews
Write Your Own Review
You're reviewing:Trane SWT2521 Pressure Switch SPST 0.94" WC Barb Connection
Your Rating
Product Questions (2)
Customer Questions
What maintenance is required for the Trane SWT2521 Pressure Switch?

Inspect the pressure switch regularly for blocked or cracked tubing, loose electrical terminals, and moisture inside the sensing line. Ensure the barb connection remains tightly fitted to prevent air leaks that can affect switching accuracy. Clean surrounding vent and inducer passages to maintain correct pressure sensing. Always disconnect power before servicing HVAC controls.

What are common issues with the Trane SWT2521 Pressure Switch?

  • Clogged pressure sensing port causing inaccurate readings.
  • Loose or cracked barb connection leading to air leaks.
  • Electrical contact failure causing intermittent switching.
  • Miscalibration resulting in improper pressure response.

Installation Steps

Step 1: Turn off HVAC power and confirm no voltage.

Step 2: Remove old pressure switch noting tubing terminals and inspect tubing.

Step 3: Mount new pressure switch securely in original bracket using existing hardware.

Step 4: Connect barb hose to correct pressure port ensure tight seal avoid leaks.

Step 5: Reattach electrical terminals as labeled secure connections.

Step 6: Restore power and test system operation verify proper switch response monitor correct cycling safely.