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Heater Union Tailpiece 20-1032 - Bubbles Supply

Heater Union Tailpiece 20-1032

Part #: 20-1032

$3.21
In stock — ships today
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1-year warrantySame-day ship before 3pm CTPerfect Fit Guarantee30-day returns

About this union/fitting

The Waterway Heater Union Tailpiece 20-1032 is an essential spa heater component that connects your heater assembly to your plumbing system. This OEM replacement part features 2" Male Buttress Thread (MBT) on one end and 2" Male Pipe Thread (MPT) on the other, providing a secure, leak-proof connection for most residential spa heating systems. Designed to Waterway's exact specifications, this tailpiece ensures reliable performance whether you're dealing with heating issues or performing routine maintenance.

At Bubbles Supply, we guarantee this heater union tailpiece will fit exactly as intended, backed by our comprehensive 1-year warranty and same-day shipping on in-stock orders. This genuine Waterway part eliminates the guesswork of aftermarket alternatives, giving you confidence in your repair. Before installation, verify your existing tailpiece threading matches the 2" MBT x 2" MPT configuration and ensure proper alignment with your heater union assembly.

Exact part number

20-1032

Save this for ordering or warranty claims

Also known as / Replaces

This part replaces or is interchangeable with:

  • 2-inch heater tailpiece
  • heater union connector
  • heater union nipple
  • heater union tail piece

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

Technical specifications

Union size
2 inch

Plumbing notes

  • Union size: 2 inch

Need help measuring? Email hello@bubblessupply.com with a photo of your existing plumbing.

Common symptoms this part fixes

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

  • Water leaking at heater union connection
  • Cracked or stripped threads on existing tailpiece
  • Heater assembly unable to seal properly
  • Union cross-threaded or damaged during previous service
  • Water loss at heater inlet or outlet

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

Before you buy — quick checklist

  • Confirm your existing tailpiece is 2" MBT on one end and 2" MPT on the other — do not assume both ends match
  • Inspect your heater union nut and o-ring — a leaking tailpiece often damages the union nut too, so check before ordering just the tailpiece
  • Verify your heater union assembly is Waterway — this is an OEM part and thread profiles vary by manufacturer
  • Check whether the leak is at the tailpiece threads or at the union o-ring seat — these are separate failure points
  • Turn off power and water supply before removing the old tailpiece to avoid scalding or electrical hazard

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

Install difficulty: Medium — Some experience neededTypically 30-60 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.

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