0.75 HP 115V Bath Pump HB21000

Name: 0.75 HP 115V Bath Pump HB21000
Brand: Jacuzzi Whirlpool
SKU: HB21000
Price: 357.7 USD
Availability: InStock

Part #: HB21000

$357.70

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

About this bath pump

The Jacuzzi Whirlpool HB21000 is a 0.75 HP main circulation pump designed for Jacuzzi spa systems requiring 115V power. This OEM replacement pump delivers reliable water circulation with 7.5 amp draw and features standard 1-1/2" male buttress thread connections for seamless integration into existing plumbing configurations.

Built to Jacuzzi's original specifications, this pump ensures your spa maintains proper water flow and filtration performance. At Bubbles Supply, we guarantee an exact fit with same-day shipping and back every pump with our comprehensive 1-year warranty for complete peace of mind. Professional installation is recommended to ensure proper electrical connections and optimal performance—always verify pump specifications match your existing unit before installation.

Exact part number

HB21000

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Technical specifications

Voltage: 115V
Horsepower: 0.75 HP
Amperage: 7.5A

Common symptoms this part fixes

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

Pump won't start
Humming but no rotation
Low water flow
No water circulation
Pump runs but no pressure
Overheating and shutting down

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

Before you buy — quick checklist

Verify your existing pump's voltage matches 115V
Confirm horsepower rating on old pump label
Measure plumbing connection size
Check electrical amp requirements
Note pump orientation and mounting configuration
Verify buttress thread compatibility

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

Medium — Some experience neededTypically 45-90 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.