πŸš€ New launch promo β€” 10% off orders over $300. Use code LAUNCH10
Not sure which part you need? Upload a photo and we'll find it. β†’
2 HP Executive Spa Pump 2 Speed 230V 3720821-1D 2.00HP 230V - Bubbles Supply

2 HP Executive Spa Pump 2 Speed 230V 3720821-1D

Part #: 3720821-1D

$825.93
In stock β€” ships today
Qty
πŸ”’ Secure checkout↩️ 30-day returnsβœ… 1-year warranty
Add to B2B order list

Not sure this fits?

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

Upload a Photo

Also replaces

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

About this spa pump

This 2 HP Executive Spa Pump delivers reliable performance for mid-size to large spa systems requiring a dual-speed main circulation pump. Built by Waterway with their proven Executive 56 frame design, this 230V pump operates at 8.0/3.0 amperage for efficient high and low-speed operation. The robust 2-speed motor provides powerful filtration cycles while maintaining quiet operation during low-speed mode.

At Bubbles Supply, we guarantee this is the exact replacement pump your spa needs, not a substitute. Every Executive pump ships same-day when ordered before our cutoff, backed by our full 1-year warranty for complete peace of mind. This OEM-quality pump restores your spa's original performance and efficiency. Verify your existing pump's voltage, horsepower, and amperage ratings match these specifications before installation to ensure proper fit and optimal performance.

Exact part number

3720821-1D

Save this for ordering or warranty claims

Also known as / Replaces

This part replaces or is interchangeable with:

  • 3720821-1D
  • Executive 2HP 230V Spa Pump
  • Waterway 3720821
  • Waterway Executive 56 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 speed / 3.0A low speed @ 230V

Common symptoms this part fixes

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

  • Pump won't start or trips breaker immediately
  • Motor hums but impeller won't spin
  • Weak or no water flow from jets
  • Pump only runs on one speed
  • Leaking from pump seal or housing
  • Spa controller shows DR or dry error code

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

Before you buy β€” quick checklist

  • Confirm your existing pump is 230V β€” do not install on a 115V circuit
  • Match the horsepower exactly β€” check the motor label on the old pump, not just the spa manual
  • Verify the frame size is 56Y before ordering β€” measure center-to-bottom of motor foot
  • Confirm your spa controller supports a 2-speed pump with separate high/low speed wiring
  • Check plumbing union sizes and style before disconnecting the old pump
  • Note whether your existing pump has a top-discharge or side-discharge wet end before purchasing

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

Install difficulty: Medium β€” Some experience neededTypically 45–90 minutes

What's in the box

  • Waterway Executive 56 2-speed pump assembly
  • Wet end with impeller pre-installed

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

Warranty

1 year warranty against manufacturing 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 β†’

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 β€” 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.

πŸ”’ Secure checkout Β· SSL encryptedΒ·πŸ‡ΊπŸ‡ΈπŸ‡¨πŸ‡¦ Serving the US and Canada·↩️ 30-day hassle-free returnsΒ·πŸ“¦ Same-day fulfillment