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1.0/4.0KW 120/240V Heater Assembly 6500-085 120/240V - Bubbles Supply

1.0/4.0KW 120/240V Heater Assembly 6500-085

Part #: 6500-085

$356.81
In stock — ships today
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Also replaces

6500-085
1-year warrantySame-day ship before 3pm CTPerfect Fit Guarantee30-day returns

About this heater

**Genuine Sundance Spas 1.0/4.0KW dual-voltage heater assembly designed for reliable spa heating performance.** This OEM replacement heater operates on both 120V and 240V power systems, delivering 1.0KW output on 120V or 4.0KW on 240V for optimal temperature control. The 15-inch housing with 2" x 2" connection points ensures proper fitment in compatible Sundance spa models.

Built to original equipment specifications, this heater assembly provides the exact performance your spa was designed for. At Bubbles Supply, we guarantee an exact fit with same-day shipping on in-stock items, plus every heater comes backed by our comprehensive 1-year warranty for complete peace of mind. **Professional installation recommended due to electrical requirements—always verify voltage compatibility and proper grounding before installation.**

Exact part number

6500-085

Save this for ordering or warranty claims

Also known as / Replaces

This part replaces or is interchangeable with:

  • 4.0KW heater assembly
  • 6500-085
  • dual-voltage spa heater
  • spa heater manifold
  • Sundance heater element assembly

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

Technical specifications

Voltage
120V / 240V dual-voltage
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:

  • Spa water not heating
  • Heater error code on control panel (HH or OH fault)
  • Spa trips breaker when heater engages
  • Water temperature drops and won't recover
  • Heater runs but no heat output
  • Burnt or corroded heater element visible on inspection

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

Before you buy — quick checklist

  • Confirm your spa runs on 120V or 240V before ordering — output wattage depends on voltage
  • Verify the 15-inch housing length fits your existing heater bay
  • Check your control pack or topside display for HH or OH fault codes to confirm heater is the failed component and not a sensor
  • Inspect existing heater unions — confirm 2-inch connections match your plumbing before installation
  • Have a licensed electrician or qualified spa technician handle installation given the dual-voltage electrical requirements
  • Confirm this is a Sundance OEM part — verify your spa brand before purchasing

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

Install difficulty: Hard — Technician recommendedTypically 60-90 minutes

What's in the box

  • Heater assembly (15-inch housing with element)
  • Manifold with 2" x 2" connection ports

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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