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TP200T Spaside Control G8421 - Bubbles Supply

TP200T Spaside Control G8421

Part #: G8421

$289.41
In stock — ships today
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1-year warrantySame-day ship before 3pm CTPerfect Fit Guarantee30-day returns

About this topside/keypad

The Balboa TP200T Spaside Control (Model G8421) is a 4-button replacement keypad designed for Balboa-equipped spa systems. This OEM control pack features dedicated buttons for temperature adjustment, jets activation, lighting control, and auxiliary functions, providing essential spa operation from your poolside location.

This genuine Balboa replacement part ensures exact fit compatibility with your existing spa control system, backed by our 1-year warranty and same-day shipping guarantee. The TP200T delivers reliable performance with clear button labeling and weather-resistant construction built for outdoor spa environments. Professional installation recommended to ensure proper wiring connections and waterproof sealing - always verify your current spaside control model number matches G8421 before ordering.

Exact part number

G8421

Save this for ordering or warranty claims

Also known as / Replaces

This part replaces or is interchangeable with:

  • Balboa TP200T spaside panel
  • G8421 keypad
  • TP200T keypad
  • TP200T topside control

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

Common symptoms this part fixes

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

  • Spaside control buttons not responding
  • Blank or unlit display panel
  • Spa won't activate jets or lights from topside
  • Buttons physically cracked, broken, or stuck
  • Water intrusion causing erratic button behavior
  • Spa only operable from main control pack, topside unresponsive

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

Before you buy — quick checklist

  • Confirm your existing topside control is labeled TP200T or G8421 before ordering
  • Locate the cable connector on your current unit and verify pin count matches
  • Check your main control pack model to confirm TP200T topside compatibility
  • Inspect the mounting cutout dimensions on your spa shell — replacement must match
  • Verify the cable length from your spa shell to the control pack housing is sufficient

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

Install difficulty: Medium — Some experience neededTypically 30–60 minutes

What's in the box

  • TP200T spaside control unit
  • Cable with connector
  • Mounting hardware

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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