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1 Amp 2.0 psi Pressure Switch 34-0178 - Bubbles Supply

1 Amp 2.0 psi Pressure Switch 34-0178

Part #: 34-0178

$58.41
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1-year warrantySame-day ship before 3pm CTPerfect Fit Guarantee30-day returns

About this pressure switch

This HydroQuip 1 Amp 2.0 psi pressure switch (part #34-0178) is an OEM replacement component designed for HydroQuip control systems in various spa models. The SPST (single pole, single throw) pilot duty switch monitors water pressure and signals your control pack when sufficient flow is detected, ensuring your heater operates safely only when proper circulation is established.

Built to HydroQuip's original specifications, this genuine replacement switch delivers reliable performance with exact fit guaranteed for seamless installation. Your order ships same day from our Canadian warehouse and includes our comprehensive 1-year warranty for complete peace of mind. When replacing your pressure switch, ensure all power is disconnected and verify proper plumbing connections to maintain optimal spa operation and safety.

Exact part number

34-0178

Save this for ordering or warranty claims

Also known as / Replaces

This part replaces or is interchangeable with:

  • flow switch
  • pilot duty pressure switch
  • pressure switch
  • SPST pressure switch

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

Technical specifications

Amperage
1 Amp

Common symptoms this part fixes

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

  • Heater not activating despite pump running
  • Spa display showing flow or pressure fault error
  • Heater cycling on and off erratically
  • Control pack not detecting water circulation
  • Spa entering lockout mode due to failed pressure signal

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

Before you buy — quick checklist

  • Confirm your existing pressure switch is rated 2.0 psi — switches come in multiple pressure ratings and are not interchangeable
  • Verify your control pack is a HydroQuip unit and cross-reference part number 34-0178 against your current switch
  • Check the amperage rating on your existing switch — this is a 1 Amp pilot duty switch, not a line-voltage switching application
  • Inspect the switch port fitting size and thread type on your manifold before ordering to confirm compatibility
  • Rule out a clogged filter or closed valve as the root cause of your pressure fault before replacing the switch

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.

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