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2 HP Executive Spa Pump 2 Speed 230V 3720821-13 2.00HP 230V - Bubbles Supply

2 HP Executive Spa Pump 2 Speed 230V 3720821-13

Part #: 3720821-13

$825.93
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Also replaces

3720821-13
1-year warrantySame-day ship before 3pm CTPerfect Fit Guarantee30-day returns

About this spa pump

Replace your failing main spa pump with this genuine Waterway Executive 56 2 HP spa pump, designed for 230V electrical systems. This dual-speed circulation pump delivers reliable performance for medium to large spa installations, featuring a 56Y frame configuration and drawing 8.0/3.0 amperage on high/low speed operation. The Executive series represents Waterway's premium pump line, engineered for demanding spa applications where consistent water flow and long-term durability are essential.

At Bubbles Supply, we guarantee this OEM replacement pump will be an exact fit for your spa's existing plumbing and electrical connections, and we ship same-day to get your spa running quickly. Every pump includes our comprehensive 1-year warranty for complete peace of mind. Before installation, verify your current pump's voltage requirements and electrical connections match this 230V specification, and ensure proper electrical safety protocols during replacement.

Exact part number

3720821-13

Save this for ordering or warranty claims

Also known as / Replaces

This part replaces or is interchangeable with:

  • 3720821-13
  • Executive 56 Frame Pump
  • Waterway 3720821
  • Waterway Executive 56 2HP 2-Speed Pump

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

Technical specifications

Voltage
230V
Horsepower
2.0 HP
Frame size
56Y frame
Speed
Two-speed
Amperage
8.0A high / 3.0A low

Common symptoms this part fixes

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

  • Pump won't start on high or low speed
  • Motor hums but impeller won't spin
  • Weak or low water flow at jets
  • Pump trips breaker repeatedly
  • Spa displays DR or DRY error (dry flow fault)
  • Excessive noise or grinding during operation

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

Before you buy — quick checklist

  • Confirm your existing pump is 230V — do not install a 230V pump on a 115V circuit
  • Verify your failed pump is a 56Y frame — measure or check the label before ordering
  • Confirm your spa requires a 2-speed pump, not single-speed
  • Match HP rating on the old pump label to 2.0 HP
  • Check plumbing union sizes before disconnecting old pump to confirm compatibility
  • Verify your spa controller supports a 2-speed pump on both speed terminals

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

Install difficulty: Medium — Some experience neededTypically 60–120 minutes

What's in the box

  • Waterway Executive 56 2HP 2-Speed pump assembly
  • Wet end with impeller pre-installed
  • Motor mounted to volute

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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