Coates ILS Series Electric Spa Heater 5.5KW, 120V, 23A, 6ILS

Mfg #:
6ILS |
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Important Notes About Ordering Coates Heaters

Coates heaters are a made-to-order product. When you order your Coates heater from E-Z Test Pool Supplies, we'll confirm a lead time with the manufacturer which typically can range up to 6-10 weeks.

E-Z Test Pool Supplies cannot fulfill orders for Coates heaters in the following states: Washington, Oregon, Idaho, California. Any orders placed within these states will be canceled and refunded.

Coates 6ILS Electric Heater; 6 kW; 1-Phase; 240 V In-Line; 23 A

The Coates 6ILS Electric In-Line Spa Heater is 5. 5 kw, 240V, and is 18,772 BTU. The Coates In-Line Electric Spa Heaters are compact to accomodate many different spa and hot tub plumbing configurations. The overall length including the unions for the Coates 6ILS Spa Heater is 19. 5" and the weight is approximately 10 lbs.


  • Replaceable Titanium element
  • Stainless steel tank
  • Contactors (Mod. 6ILS)
  • Pressure switch
  • Close differential thermostat
  • Control box with powder coat finish
  • Manual reset high temp limit
  • Element “on” light
  • 1-1/2 x 2 inch union connections for PVC pip


24.30 x 8.70 x 8.70 Inches


AmperageDraw 23 A
Brand Coates
CabinetDepth 6 Inch
CabinetHeight 12 Inch
CabinetWidth 6 Inch
HeatOutput 6 kW
HeatOutputBTUH 18772
Item Electric Heater
Phase 1-Phase
Series ILS
VoltageRating 240 V In-Line
WaterConnection 1-1/2 Inch x 2 Inch Union


Install Guide


Heater Sizing Guide

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