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Heater Half Union 0611-15 - Bubbles Supply

Heater Half Union 0611-15

Part #: 0611-15

$12.76
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 Heater Half Union 0611-15 from Magic Plastics is a critical plumbing component that connects your spa's heating element to the circulation system. This 1-1/2" split nut union features durable construction designed for Magic Plastics heaters and other compatible spa heating systems. The included split nut and O-ring ensure a watertight seal that withstands the high temperatures and pressures of spa operation.

Built to OEM specifications, this heater half union delivers an exact fit guaranteed to restore proper water flow and heating performance. We ship same-day from our Canadian warehouse and back every part with our comprehensive 1-year warranty for complete peace of mind. Remember to verify your existing union size and thread type before installation, and always turn off power and drain water below the heater level before beginning any plumbing work.

Exact part number

0611-15

Save this for ordering or warranty claims

Also known as / Replaces

This part replaces or is interchangeable with:

  • 1-1/2 inch heater union half
  • heater plumbing union
  • heater union half
  • split nut union

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

Technical specifications

Union size
1-1/2 inch

Plumbing notes

  • Union size: 1-1/2 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 inlet or outlet connection
  • Cracked or stripped union nut causing drip at heater manifold
  • Unable to seat union due to broken split nut
  • O-ring blown out causing pressurized leak at heater
  • Heater disconnected from plumbing loop due to failed union

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

Before you buy — quick checklist

  • Measure your existing union — confirm it is 1-1/2 inch before ordering
  • Check whether you need one half union or a matched pair (both inlet and outlet)
  • Inspect your heater manifold threads for damage — a new union won't seal on stripped threads
  • Confirm your existing union is a split-nut style, not a glue-in or compression fitting
  • Verify the O-ring is included or order a replacement O-ring separately if yours is deteriorated

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

Install difficulty: Easy — DIY-friendlyTypically 15-30 minutes

What's in the box

  • Heater half union body
  • Split nut
  • O-ring

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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