Coates 12411ST 11kW 240V single phase ST Series electric spa heaterCoates 11kW 240V Spa Heater, Single Phase, 12411ST In stock$96999
Coates 12411ST 11kW 240V single phase ST Series electric spa heater
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Coates 11kW 240V Spa Heater, Single Phase, 12411ST

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$96999
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Quick overview

  • 11kW electric heat Runs on 240V single phase and draws 46 amps.
  • Flow protected A built-in pressure switch keeps the elements off when no water is moving.
  • Wide flow window Operates at any flow rate between 15 and 80 GPM.
  • Stainless steel tank The tank directs water across the elements for efficient heat transfer.
  • Incoloy elements Water flows directly over the incoloy heating elements inside the tank.
  • Compact The ST model measures 17-1/2 in. long, 4 in. wide and 14 in. tall.
Full description and specifications ↓

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Product details

The Coates 12411ST is an 11kW electric spa heater from the ST Series, built for 240V single phase service at 46 amps. It is a straightforward heater for a spa that has electrical service available and no gas line.

Safe on low flow

A built-in pressure switch prevents the heater from firing when there is no water flow, and lets it run at any flow rate from 15 GPM up to 80 GPM. That protects the elements if a pump fails or a valve is left closed.

Stainless tank, incoloy elements

The stainless steel tank is shaped to direct the water flow over the incoloy heating elements, so heat transfers into the water efficiently rather than soaking into the housing.

Size

The ST model measures 17-1/2 in. long, 4 in. wide and 14 in. tall, small enough to fit on most equipment pads. A 5.5kW version in the same series is available for smaller spas.

Specifications
Brand Coates
Manufacturer part number 12411ST
Series ST
Type Electric spa heater
Power 11 kW
Heat output 37,543 BTU/hr, by Coates
Electrical 240 V, single phase, 46 A
Water connections 1-1/2 in x 2 in unions for PVC pipe
Dimensions 17-1/2 in long, 4 in wide, 14 in high
Shipping weight 19 lb
Heating elements Incoloy
Tank Stainless steel
Controls Digital thermostat, manual reset high limit, flow switch
Flow rate 15 to 80 GPM
Listing UL, indoor or outdoor
Ships Parcel

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Questions and answers

What people ask about this product, answered by our pool techs.

What electrical supply does the Coates 12411ST need?
240 V, single phase, 46 A, by Coates's table for the 12411ST. Have an electrician confirm the panel, breaker and conductors before ordering.
Can the Coates 12411ST heat a pool?
Coates sells the ST series as spa heaters, at 37,543 BTU/hr for the 12411ST. Its pool heaters start at 12 kW in the CE series.
What flow does the Coates 12411ST need?
15 to 80 GPM. The built in flow switch stops the heater when there is no flow.
What controls does the Coates 12411ST have?
A digital thermostat, a manual reset high limit and a flow switch, all built in. Coates gives the working flow range as 15 to 80 GPM.
Can the Coates 12411ST be installed outdoors?
Yes. It is UL listed for indoor or outdoor installation.
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