🚀 New launch promo — 10% off orders over $300. Use code LAUNCH10
Bubbles Supply
Not sure which part you need? Upload a photo and we'll find it. →
PresAir Pressure Switch PM11120E - Bubbles Supply

PresAir Pressure Switch PM11120E

Part #: PM11120E

$72.41
In stock — ships today
Qty
🔒 Secure checkout↩️ 30-day returns✅ 1-year warranty
Add to B2B order list

Not sure this fits?

Send us a photo of your old part — we'll confirm the right replacement before you order.

Upload a Photo
1-year warrantySame-day ship before 3pm CTPerfect Fit Guarantee30-day returns

About this pressure switch

This PresAir PM11120E pressure switch is a DPDT (double pole, double throw) sensor designed for spa and hot tub systems requiring precise pressure monitoring. Operating at 1-5 PSI with a 21-amp rating and 1/8" NPT threading, this OEM-quality switch provides reliable detection for pump activation, heating cycles, and safety shutoffs across various spa brands.

Built to PresAir's exacting standards, this pressure switch delivers the exact fit you need with our guaranteed compatibility promise. We ship same-day from our Canadian warehouse and back every part with a full 1-year warranty for complete peace of mind. Verify your existing switch's PSI range and thread size before ordering to ensure proper operation and system safety.

Exact part number

PM11120E

Save this for ordering or warranty claims

Also known as / Replaces

This part replaces or is interchangeable with:

  • double pole double throw spa pressure switch
  • PM11120E pressure switch
  • PresAir DPDT switch

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

Technical specifications

Amperage
21A
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:

  • Spa won't heat — pump runs but heater never activates
  • Spa throws OH (overheat) error with no actual overtemp condition
  • Spa throws HH (high heat) fault at startup
  • ICE error triggered incorrectly or system won't recover from freeze protection mode
  • Pump cycles on and off erratically or won't hold a run state
  • Spa control board shows no flow or dry-fire condition despite normal water flow

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

Before you buy — quick checklist

  • Confirm your existing switch is rated 1-5 PSI — substituting a different PSI range will cause false triggers or failure to activate
  • Verify the thread size on your existing switch is 1/8" NPT before ordering
  • Confirm your system requires a DPDT switch — some applications use SPDT; check your control board wiring diagram
  • Check the amperage rating of your existing switch — this unit is rated 21A
  • Inspect the tubing connected to the pressure tap for cracks or blockages before condemning the switch
  • Note the wire terminal layout on your old switch and photograph it before removal to ensure correct re-wiring

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

Install difficulty: Medium — Some experience neededTypically 30–60 minutes

Warranty

1 year manufacturer 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.

🔒 Secure checkout · SSL encrypted·🇺🇸🇨🇦 Serving the US and Canada·↩️ 30-day hassle-free returns·📦 Same-day fulfillment