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Coates ILS Series Electric Spa Heater 1.5KW, 120V, 12A, 1.5ILS

Coates ILS Series Electric Spa Heater 1.5KW, 120V, 12A, 1.5ILS

Mfg #: 1.5ILS


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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 EZ Pool & Spa Supply, we'll confirm a lead time with the manufacturer which typically can range up to 6-10 weeks.

EZ Pool & Spa Supply 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 1.5ILS Electric Heater; 1.5 kW; 1-Phase; 120 V In-Line; 12 A

This Coates ILS In-Line 1.5kW electric spa heater is compact and efficient and features a stainless steel tank and replaceable titanium elements. The ILS spa heater is perfect for residential spas less than 400 gallons. The stainless steel tank is designed to optimize heat transfer by directing the water flow over the elements efficiently. It has a built-in pressure switch which prevents operation when there is no water flow.

Very compact in size, this electric spa heater is rated to produce 5,120 BTU's per hour and connects with either 1.5 inch or 2 inch connections. This heater requires a standard 120 volt electrical connection but must be hard wired and does not come with a plug.


  • 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
  • Compact and efficient


AmperageDraw 12 A
Brand Coates
CabinetDepth 6 Inch
CabinetHeight 12 Inch
CabinetWidth 6 Inch
HeatOutput 1.5 kW
HeatOutputBTUH 5120
Item Electric Heater
Phase 1-Phase
Series ILS
VoltageRating 120 V In-Line
WaterConnection 1-1/2 Inch x 2 Inch Union


Install Guide


Operational Manual