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PresAir Pressure Switch TNP411R-2PR - Bubbles Supply

PresAir Pressure Switch TNP411R-2PR

Part #: TNP411R-2PR

$14.58
In stock — ships today
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About this pressure switch

The PresAir TNP411R-2PR is a single-pole single-throw (SPST) pressure switch designed for spa and hot tub applications requiring precise water flow monitoring. This 10-amp rated switch activates at 1.4 PSI with standard 1/8" NPT threading, making it compatible with most spa control systems that need reliable pressure sensing for heater protection and pump operation.

Built to OEM specifications, this PresAir pressure switch delivers the exact fit you need with our guarantee of proper compatibility. We ship same-day from our Canadian warehouse and back every part with a full 1-year warranty for complete confidence in your repair. The compact design and industry-standard NPT connection ensure straightforward installation, but always verify your existing switch's pressure rating and electrical specifications match before replacing.

Exact part number

TNP411R-2PR

Save this for ordering or warranty claims

Also known as / Replaces

This part replaces or is interchangeable with:

  • 1.4 PSI pressure switch
  • PresAir pressure switch
  • SPST spa pressure switch
  • TNP411R2PR

Looking for an older part number? Check our supersession lookup tool

Technical specifications

Amperage
10A
Port type
1/8" NPT

Plumbing notes

  • Port type: 1/8" NPT

Need help measuring? Email hello@bubblessupply.com with a photo of your existing plumbing.

Common symptoms this part fixes

If your spa is showing any of these signs, this part is likely your fix:

  • Heater not turning on despite pump running
  • Spa displaying HH, OH, or ICE error codes
  • Pump cycles on and off unexpectedly
  • Spa control board not detecting water flow
  • Heater lockout with no obvious cause

Not sure if this is your problem? Try our diagnostic centre or .

Before you buy — quick checklist

  • Confirm your existing pressure switch is rated at 1.4 PSI — switching to a different activation pressure can cause heater faults or nuisance trips
  • Verify your current switch uses 1/8" NPT threading before ordering
  • Check that your control system expects an SPST (single-pole single-throw) switch — not all systems use the same switch configuration
  • Inspect the pressure switch port on your manifold for cracks or corrosion before reinstalling
  • Note whether your spa uses a flow switch instead of a pressure switch — they are not interchangeable

Reading the checklist now prevents 90% of returns. Worth the 60 seconds.

Install difficulty: Easy — DIY-friendlyTypically 15–30 minutes

What's in the box

  • PresAir TNP411R-2PR pressure switch
  • Lead wires with spade connectors

If your order is missing any items listed above, contact hello@bubblessupply.com within 48 hours of delivery.

Warranty

1 year warranty against defects

Covers manufacturing defects. Does not cover improper installation, normal wear, or accidental damage.

Warranty claims: warranty@bubblessupply.com

Perfect Fit Guarantee

Ordered with our help and the part doesn't fit? Contact us before installation. We'll resolve it with an exchange, replacement recommendation, or return approval.

Learn about our Perfect Fit Guarantee →

Shipping

We ship across the US and Canada. US orders ship from our US warehouse to US customers; Canadian orders ship from our Canadian warehouse to Canadian customers — no cross-border shipping, no surprise duties. In-stock orders placed before 3pm CT ship same day. Standard shipping $9.95 flat rate. Free shipping on orders over $200. Express options available at checkout.

Returns

30-day hassle-free returns on unused parts in original packaging. Contact us before returning to receive your RMA number.

Frequently asked questions

Check the Compatibility section above to confirm fitment for your spa brand and model. If your model is not listed, use our fitment selector at /pages/find-my-part or ask our parts AI for a personalized recommendation.

In-stock orders placed before 3pm CT ship the same day. You will receive tracking information by email as soon as your order ships.

We accept returns within 30 days of delivery for unused items in original packaging. Email returns@bubblessupply.com with your order number to start a return. Installed electrical parts cannot be returned for safety reasons.

Yes, all new parts come with a 1-year warranty against manufacturing defects. Warranty does not cover damage from improper installation or normal wear and tear.

Customer reviews

AI Fitment Assistant

Tell us your spa model and we will confirm this part fits before you buy.

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