Sundance Jacuzzi 6500-402 5.5kW Heater Assembly

Sundance Jacuzzi 6500-402 5.5kW Heater Assembly

The Sundance Jacuzzi 6500-402 Heater Assembly is a genuine OEM 5.5kW replacement heater designed for select Sundance Spas and Jacuzzi hot tubs and spas. Built with a durable stainless steel heater tube, this assembly is engineered for reliable heating performance and long-term durability.

This is a direct OEM replacement part — not a generic or inferior aftermarket heater.

The 6500-402 heater assembly is commonly used on Sundance 680 and 780 Series spas as well as select Jacuzzi J-300 Series hot tubs equipped with circulation pumps.

Features & Benefits

• Genuine OEM Sundance & Jacuzzi replacement heater
• 5.5kW heater assembly
• Stainless steel heater tube construction
• Designed for reliable heating performance
• Used on select Sundance and Jacuzzi models
• Compatible with circulation pump systems
• Direct factory replacement part
• Not a generic aftermarket heater

Important Notes

• High limit disc 6000-093 is located inside the heater housing
• High limit disc is NOT included
• Heater barb adapter 6540-034 was removed from many 780/680 circulation pump models after November 2010
• Plug replacement part:
  • 6000-124

Cross Reference

• Laing Infinity 6698.1
• Therm Products C-3229-2A

Specifications

• Brand: Sundance Spas / Jacuzzi
• Part Number: 6500-402
• Product Type: Heater Assembly
• Heater Size: 5.5kW
• Heater Tube Material: Stainless Steel
• Longest Length: 23"
• Widest Width: 10.75"
• Control Box Size: 6" x 3"
• Wire Length: 8.5"
• Pipe Connection: 3/4" Inner Diameter

Compatible Sundance Models

680 Series

• 2008+ Burlington
• 2008+ Hartford
• 2008+ Hawthorne
• 2007+ Hartford
• 2007+ Hawthorne

(All equipped with circulation pumps)

780 Series

• 2007+ Hamilton
• 2007+ Chelsee
• 2007+ Certa
• 2007+ Camden

Other Sundance Models

• 2003–2006 Palermo
• 2003–2006 Bahia
• 2003–2006 Cayman

Compatible Jacuzzi Models

Jacuzzi J-300 Series

• J-375 (2008+ LED Series)
• J-365 (2007+)
• J-355 (2007+)
• J-320
• J-325 (except 2004 and 2008+)
• J-330
• J-335
• J-340
• J-345
• J-270
• J-280
• J-230

Why Replace Your Spa Heater?

A failing heater assembly may cause:

• Water not heating properly
• Heater error codes
• Tripped breakers
• Inconsistent water temperature
• Reduced spa performance

Replacing worn heater components helps restore reliable spa operation and heating efficiency.

Why Buy From Red Rock Spas?

Red Rock Spas is a real spa dealership and service company serving Utah and Nevada. Our technicians work on Sundance and Jacuzzi spas daily and help customers identify the correct OEM replacement parts using real-world service experience.

Need Help Verifying Compatibility?

Contact our team and we can help confirm the correct heater assembly for your Sundance or Jacuzzi spa before ordering.