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3/4 HP E-Series Spa Pump 2 Speed 115V 3420310-15 0.75HP 115V - Bubbles Supply

3/4 HP E-Series Spa Pump 2 Speed 115V 3420310-15

Part #: 3420310-15

$720.87
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About this spa pump

This Waterway E-Series 0.75 HP spa pump delivers reliable two-speed operation for most residential hot tubs requiring 115V power. Built with Waterway's proven E-Series design, this main circulation pump features a 48Y frame and operates at 8.8/2.6 amps across high and low speeds, providing the perfect balance of filtration flow and energy efficiency for your spa system.

At Bubbles Supply, we guarantee this pump will fit your spa exactly as intended, backed by our comprehensive 1-year warranty and same-day shipping on in-stock orders. The dual-speed motor allows for powerful jet action during use and quieter filtration cycles when maintaining water quality. Verify your existing pump's voltage, horsepower, and frame specifications match before installation to ensure proper fit and optimal performance.

Exact part number

3420310-15

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Also known as / Replaces

This part replaces or is interchangeable with:

  • 0.75 HP two-speed spa pump
  • 3420310-15
  • 48Y frame spa pump
  • Waterway E-Series pump

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

Technical specifications

Voltage
115V
Horsepower
0.75 HP
Frame size
48Y
Speed
Two-speed
Amperage
8.8A high speed / 2.6A low speed @ 115V

Common symptoms this part fixes

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

  • Pump won't turn on or trips breaker immediately
  • Motor hums but impeller won't spin
  • Weak or no jet pressure on high speed
  • Spa stuck in low-speed filtration mode, won't shift to high
  • Leaking water from pump housing or seal
  • Overheating motor shuts down mid-cycle

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

Before you buy — quick checklist

  • Confirm your existing pump is 115V — this pump is not dual voltage and will not work on a 240V circuit
  • Check the horsepower rating on your current pump's label — verify it matches 0.75 HP
  • Confirm your existing pump uses a 48Y frame motor
  • Verify your spa control system supports two-speed pump operation
  • Measure your existing plumbing union size and confirm compatibility before disconnecting anything
  • Note whether your current pump is a wet end replacement only or a full pump assembly — this is a complete assembly

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

Install difficulty: Medium — Some experience neededTypically 45–90 minutes

What's in the box

  • Waterway E-Series pump assembly (motor and wet end)
  • Union tailpieces (verify with supplier at time of order)
  • O-rings

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

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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