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Product Overview

The Raypak Digital E3T Electric Pool & Spa Heater | 100-10000666 is a high-output electric heater designed for spas, hot tubs, and compatible pool heating applications. With a powerful 27kW electric output and approximately 92,128 BTU/hr, this heater delivers strong heating performance without requiring natural gas, propane, or venting.

Built with titanium heating elements and 316L stainless steel construction, the E3T is engineered for demanding pool and spa environments, including properly maintained saltwater systems. Its compact footprint makes it a strong choice for new builds, replacement installations, and equipment pads where space is limited.

The digital control center provides easy operation and diagnostics, displaying set point, inlet temperature, outlet temperature, flow rate, and service code alerts. Solid-state control technology helps eliminate noisy mechanical contactors for quieter, more reliable operation.

Ideal For

• Spas and hot tubs
• Small-to-medium pool heating applications
• Electric pool and spa heating systems
• Properties without natural gas or propane access
• Saltwater pool and spa systems
• Equipment pads requiring compact heater sizing
• Replacing older electric pool or spa heaters
• Customers wanting digital heater controls and diagnostics
• Indoor or outdoor equipment areas where gas venting is not preferred
• Professional pool and spa equipment installations

Key Features

• 27kW electric heating output — provides strong heating performance for compatible pool and spa applications.
• Approx. 92,128 BTU/hr — high-output electric heating for faster temperature recovery.
• 240V single-phase operation — designed for professional electrical installations with adequate service capacity.
• Titanium heating elements — built for durability in demanding pool, spa, and saltwater environments.
• 316L stainless steel construction — marine-grade stainless steel body helps resist corrosion.
• Digital controls with diagnostics — displays set point, inlet/outlet temperatures, flow rate, and code alerts.
• Solid-state control system — helps reduce noisy contactor operation for quieter performance.
• Flow sensor technology — monitors water flow for safer, more efficient heater operation.
• Power modulation — uses only the energy needed to maintain the selected water temperature.
• 2" union connections — supports professional plumbing installation and easier service access.
• Compact design — easier to fit into tight equipment pad layouts and replacement applications.
• No gas or venting required — electric operation eliminates fuel line and combustion venting requirements.

Benefits

The Raypak E3T 27kW heater gives pool and spa owners a compact, clean electric heating option with strong output and advanced controls. Because it is electric, it does not require a gas line, propane tank, flue, or combustion air setup.

The titanium elements and 316L stainless steel construction make it a durable choice for harsh water environments when chemistry is properly maintained. The digital display and diagnostic alerts help simplify operation, monitoring, and troubleshooting for service professionals.

For applications with sufficient electrical capacity, the 27kW E3T offers dependable heating performance in a compact package that is well suited for spas, hot tubs, and select pool heating needs.

Specifications

Included Components

• 1 × Raypak E3T 27kW electric pool and spa heater
• Titanium heating element assembly
• Digital control center
• 2" union connection set
• Manufacturer-supplied installation documentation

Electrical breakers, wiring, disconnect, bonding materials, plumbing valves, additional fittings, GFCI protection where required, and installation labor are sold separately unless specifically included by the supplier.

Installation Notes

This heater must be installed by a qualified pool professional and licensed electrician. Proper installation requires correct electrical service, breaker sizing, wire sizing, bonding, grounding, GFCI protection where required, plumbing flow verification, and startup testing.

Before installation, confirm that the electrical service can support a 27kW, 240V single-phase heater requiring three 40A breakers. The system must provide at least 15 GPM of water flow through the heater.

Do not energize the heater without proper water flow. Water chemistry should be maintained within recommended ranges to protect the titanium elements, stainless steel body, and connected pool/spa equipment.

Customer-Facing Q&A

Q: What is the Raypak 100-10000666?
A: It is a Raypak E3T Electric 3-Series Titanium pool and spa heater rated at 27kW / approximately 92,128 BTU/hr.

Q: What is the SKU?
A: The SKU is 100-10000666.

Q: What is the UPC?
A: The UPC is 840891046106.

Q: What is the former part number?
A: This model was formerly listed as 017124.

Q: What is the distributor product number?
A: The distributor product number is RAY-15-0015.

Q: How many kilowatts is this heater?
A: This model is rated at 27kW.

Q: How many BTUs does it produce?
A: It produces approximately 92,128 BTU/hr.

Q: What voltage does it require?
A: It requires 240V single-phase electrical service.

Q: What breakers are required?
A: This model requires three 40A breakers.

Q: What plumbing size does it use?
A: It comes standard with 2" union connections.

Q: What is the minimum flow rate?
A: The minimum flow rate is 15 GPM.

Q: Is this suitable for saltwater systems?
A: Yes. It is built with titanium elements and 316L stainless steel, making it suitable for properly maintained saltwater pool and spa systems.

Q: Does this require gas or venting?
A: No. This is an electric heater and does not require natural gas, propane, or gas venting.

Q: Should this be professionally installed?
A: Yes. Professional pool and licensed electrical installation is required due to the heater’s electrical load, bonding, grounding, plumbing, and safety requirements.