Raypak E3T 18kW Electric Pool & Spa Heater | 100-10000665

The Raypak E3T 18kW electric heater is engineered for precise, dependable pool and spa heating using advanced digital controls and solid-state components. Designed for demanding residential and commercial environments, the E3T provides consistent water temperature management, quiet operation, and outstanding protection features that extend equipment life. Its titanium heating elements resist corrosion in both chlorinated and saltwater pools, delivering long-term performance with minimal service needs.

Built with a compact, NEMA-3R rated enclosure, the E3T installs easily indoors or outdoors, even in tight equipment pads. Water-side protection systems—including flow monitoring, freeze shutdown, and low-temperature operation logic—ensure the heater stays protected during unexpected conditions, preventing dry-firing, thermal shock, and element burnout. A bright digital display offers real-time visibility into inlet temperature, outlet temperature, flow rate, and system status, making troubleshooting fast and intuitive.

Raypak’s Electric E3T Series heaters meet all Title 24 requirements, giving you a smart, energy-efficient solution for pool heating. With updated energy regulations arriving on January 1, 2026, the E3T line keeps your system compliant while delivering dependable performance and lower operating costs. Choose Raypak to stay ahead of efficiency standards without sacrificing reliability.

Smart Digital Heating Control

Raypak’s electronic control platform gives users precise oversight of temperature and performance. The E3T’s display clearly communicates system health with easy-to-read, non-abbreviated fault codes, eliminating confusion seen in older heaters with blinking-light diagnostics. The 18kW and 27kW models use a 12-character LCD, allowing expanded text for alerts and operating details.

The heater also includes 2-wire connectors for automation system integration, supporting remote control or scheduling as part of larger pool/spa control systems.

Protection & Performance Engineering

Raypak included multiple proactive safeguards that help prevent premature failure—particularly important for electric heaters operating in unpredictable water environments.

Core protection features:

• Flow protection automatically shuts the unit down if water flow drops outside the safe 15–60 GPM range, preventing dry-firing.

• Low-temperature mode prevents thermal shock when sudden drops in water temperature occur.

• Freeze protection shuts the heater off at 32°F (0°C) inlet water to avoid freeze damage.

• Element failure protection continually monitors heating element performance to detect early degradation.

• 1-minute time delay prevents rapid cycling and premature burnout.

These features work together to maximize lifespan and ensure stable, reliable operation.

Durability That Matches Harsh Environments

Titanium heating elements are standard across all E3T heaters, providing superior resistance to corrosion, scaling, and salt-pool chemistry. The heater’s overall build—shown in the technical drawings—uses a rugged outdoor-ready enclosure rated for NEMA 3R exposure, allowing installation in uncovered pads or mechanical rooms.

This durability makes the E3T suitable for spas, therapy pools, resistance pools, small inground pools, and commercial applications where uptime is critical.

Specifications

• Power Output: 18 kW (61,419 BTU)

• Voltage / Phase: 240V, single-phase

• Heating Elements: Titanium for maximum durability

• Housing Material: 316L stainless steel – corrosion & saltwater resistant

• Thermal Efficiency: 100%

• Design: Solid-state electronics with flow sensor technology (prevents dry-firing)

• Controls: Digital control center with diagnostics, monitoring, and alerts

• Automation Ready: Compatible with pool and spa automation systems

• Installation: Compact footprint for easy retrofit or new builds

• Application: Pools and spas, including saltwater systems