The Raypak E3T Electric Spa Heater, Titanium, 240V, 18kW, Type P (2 × 40A Breakers) | 100-10000665 is a high-performance electric heater engineered for fast, dependable spa heating even in challenging water conditions. Its titanium heating elements deliver long-lasting, corrosion-resistant performance that stands up to saltwater and chemically demanding environments, keeping your spa ready for comfort year after year.
What sets this unit apart is the combination of powerful electric heating, titanium durability, and a compact, spa-focused design that makes installation and service simpler than many competing models. With 18kW of heating power and a Type P configuration tuned for two 40A breakers, it provides steady, reliable warmth without the need for gas lines, venting, or combustion-related maintenance.
- 18kW Heating Output: Rapid heat-up and dependable temperature maintenance for spa sessions, even when outdoor temperatures dip.
- Titanium Heating Elements: Exceptional corrosion resistance, ideal for saltwater spas and harsh-water conditions, reducing scale buildup and extending service life.
- 240V Electric Operation: Designed for common residential electrical service, delivering consistent heat without the complexities of gas systems.
- Type P Configuration: Specified for installation with two 40A breakers, offering a straightforward electrical layout for reliable performance.
- Compact, Spa-Focused Form Factor: Lightweight and easier to position and service (approximately 24 lbs) compared with bulkier electric heaters.
Why choose electric heating with this Raypak model? It delivers fast, controllable warmth without gas lines, venting, or fuel storage concerns. Titanium elements resist corrosion in saltwater environments, meaning fewer headaches from mineral buildup and longer service intervals. The result is a spa that reaches and maintains a comfortable temperature with predictable energy use and minimal maintenance relative to combustion-based options.
Ideal for
- Spas and hot tubs requiring reliable electric heating
- Installations that use 240V electrical service and need a Type P configuration with two 40A breakers
- Saltwater or harsh-water environments where titanium durability matters
- Replacing an existing Raypak E3T 18kW heater assembly
Installation and practical considerations
- Professional installation is strongly recommended to ensure proper wiring, bonding/grounding, and flow verification.
- Designed for spas and smaller bodies of water; performance with pools depends on size, climate, and desired heat-up time.
- Requires 240V service and two 40A breakers (Type P configuration) for optimal operation.
Customer Q&A highlights
- What does part number 100-10000665 represent? A Raypak E3T 18kW electric spa heater with titanium construction in a 240V, Type P configuration.
- Is it saltwater compatible? Yes—titanium heating elements are designed for saltwater and harsh-water environments.
- Should it be installed by a professional? Yes. Electric heaters require proper wiring, bonding/grounding, and flow verification to ensure safe, reliable operation.