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J-300 5.5kW Heater Assembly 6500-083 230V - Bubbles Supply

J-300 5.5kW Heater Assembly 6500-083

Part #: 6500-083

$384.78
In stock — ships today
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Fits these systems

Jacuzzi

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Also replaces

6500-083
1-year warrantySame-day ship before 3pm CTPerfect Fit Guarantee30-day returns

Before you buy — quick checklist

  • Confirm your spa is a J-300 series — check the model label inside the equipment bay door
  • Verify your spa runs on 230V / 60Hz before ordering this unit
  • Note your existing heater's part number from the label on the heater tube to confirm direct replacement
  • Check whether your HH or OH fault is actually a heater issue versus a faulty pressure switch or temperature sensor — replace those first if heater tube tests intact
  • Inspect the existing heater unions and manifold connections for corrosion or cracking before install — replace if needed

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

Exact part number

6500-083

Save this for ordering or warranty claims

Technical specifications

Voltage
230V / 60Hz

Common symptoms this part fixes

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

  • Spa water not heating or heating very slowly
  • Heater error code on control panel (HH or OH fault)
  • Spa drops temperature overnight despite thermostat being set correctly
  • Heater element burned out or failed dry-fire
  • Repeated high-limit or overheat shutdowns
  • Visible corrosion or scale buildup on existing heater tube

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

About this heater

The Jacuzzi 6500-083 is a genuine OEM 5.5kW flow-through heater assembly designed for J-300 series spas. This 230V, 60Hz heating element delivers reliable performance to keep your spa water at the perfect temperature. The flow-through design ensures efficient heat transfer while protecting the element from dry-fire damage.

At Bubbles Supply, we stock only authentic Jacuzzi replacement parts with our exact fit guarantee. This heater assembly ships same-day from our Canadian warehouse and comes backed by our comprehensive 1-year warranty for complete peace of mind. The 5.5kW output provides ample heating capacity for most residential spa applications. Professional installation is recommended to ensure proper electrical connections and system integration. Always verify your spa's electrical specifications match this 230V unit before installation.

Also known as / Replaces

This part replaces or is interchangeable with:

  • 5.5kW spa heater element
  • 6500-083 heater
  • J-300 heater assembly

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

Install difficulty: Medium — Some experience neededTypically 60–90 minutes

What's in the box

  • 5.5kW flow-through heater assembly
  • Manufacturer documentation

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.

AI Fitment Assistant

Tell us your spa model and we will confirm this part fits before you buy.

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