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When electricity is the energy choice Raypak is the quality choice -- dependable, trouble-free, performance-proven - with corrosion-free, 100% copper and bronze waterways. Two compact models - 5.5kw and 11kw - built to last by the company renowned for reliability.
SpaPak spa/hot tub electric heaters furnish sustained heat to provide the maximum benefits of hydrotherapy...including stress reduction, relaxation and arthritis/pain relief.

Standard Product Features

Longer Life
Because all waterways are corrosion-free copper and bronze - not aluminum. And, SpaPak features large size, heavy duty Incoloy heating elements that lasts far longer than ordinary water heating elements.
Troublefree
Because SpaPak has extra quality and safety built-in - a pressure switch to prevent operation without water flow, a high limit temperature control to prevent overheating and a dependable quality thermostat.
Easy to Install
With a compact design that fits into small spaces. Standard size, full flow 1-1/2" inlet and outlet connections are conveniently located. External current leak protectors are not required.
Two Year Limited Warranty
Against defects in materials and workmanship (see written warranty for details). In addition, every SpaPak is thoroughly tested before shipment.
Sizing Guide

The following table shows the heating capability for each model in temperature rise per hour with a given amount of water. For example, the 11kw unit will raise the temperature of 450 gallons of water 10 degrees Fahrenheit in one hour. To determine the gallonage of your spa, multiply the surface area x average depth x 7.5.
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Hi Limit Switch

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FEATURES
  • Longer Life
    Because all waterways are corrosion-free copper and bronze - not aluminum. And, SpaPak features large size, heavy duty Incoloy heating elements that lasts far longer than ordinary water heating elements.
  • Troublefree
    Because SpaPak has extra quality and safety built-in - a pressure switch to prevent operation without water flow, a high limit temperature control to prevent overheating and a dependable quality thermostat.
  • Easy to Install
    With a compact design that fits into small spaces. Standard size, full flow 1-1/2" inlet and outlet connections are conveniently located. External current leak protectors are not required.
  • Two Year Limited Warranty
    Against defects in materials and workmanship (see written warranty for details). In addition, every SpaPak is thoroughly tested before shipment.
  • Sizing Guide

The following table shows the heating capability for each model in temperature rise per hour with a given amount of water. For example, the 11kw unit will raise the temperature of 450 gallons of water 10 degrees Fahrenheit in one hour. To determine the gallonage of your spa, multiply the surface area x average depth x 7.5.
Water Temperature Rise in oF/Hr. 5.5KW
Model 5o 10o 15o 20o 25°
Gallons of Water
450 225 150 113 95
11KW 900 450 300 225 190
Always cover your spa or hot tub when not in use to minimize heat loss and evaporation, and to decrease the time need to heat water.

Specifications & Dimensions

  Model     A     B*     Water  
  Conn.  
  C     Voltage  
  Single  
  Phase  
  Shipping  
  Weight  
  (lbs)  
5.5KW 16-1/8" 8" 1-1/2" 4" 240 26
11KW 23-1/8" 15" 1-1/2" 11" 240 31
*Center-line distance between water connections.