Stiebel Eltron 239225 Tempra 36 Plus Whole House Electric Tankless Water Heater
36 kW • 240/208V • Maximum-Capacity Whole-House Performance with Advanced Flow Control
The Stiebel Eltron Tempra 36 Plus (Part #239225) is the most powerful model in the Tempra Plus lineup, engineered to deliver exceptional whole-house hot water performance, unmatched temperature stability, and industry-leading efficiency. Designed for 240/208V systems, this premium tankless water heater is built to support large homes, multi-bathroom residences, and demanding commercial environments where consistent, high-volume hot water is essential.
Advanced Flow Control for Absolute Temperature Stability
The defining advantage of the Tempra Plus series is Stiebel Eltron’s patented Advanced Flow Control technology, which ensures precise temperature consistency even when system demand exceeds capacity. Instead of allowing temperature drops, the unit intelligently adjusts water flow to maintain the set temperature.
This delivers:
- No cold water interruptions during peak demand
- Stable hot water across multiple fixtures
- Superior comfort in high-usage applications
Intelligent Self-Modulating Technology
The Tempra 36 Plus features microprocessor-controlled self-modulating technology, continuously adjusting power input based on flow rate and incoming water temperature. This ensures the unit uses only the energy required to meet demand, maximizing efficiency while maintaining consistent performance.
The result is smooth, reliable hot water delivery, even during simultaneous multi-fixture use.
Maximum Output for High-Demand Applications
With a maximum output of 36 kW at 240V (27 kW at 208V), the Tempra 36 Plus provides the highest capacity in the Tempra lineup. It is engineered to support multiple high-demand fixtures operating simultaneously, offering:
- Exceptional temperature rise in cold water conditions
- High flow rates for showers, sinks, and appliances
- Reliable hot water during peak usage periods
The tankless design ensures endless hot water with no recovery time, eliminating the limitations of traditional tank systems.
Energy Efficiency Without Standby Loss
Operating at up to 99% efficiency, the Tempra 36 Plus converts nearly all incoming electricity into usable hot water while eliminating standby heat loss. This results in:
- Reduced energy consumption
- Lower utility costs
- Improved overall system efficiency
Precision Digital Temperature Control
A front-facing digital display allows precise adjustment of water temperature, ensuring consistent performance and user comfort. The system maintains stable output regardless of fluctuations in demand, providing dependable hot water delivery throughout the system.
Compact, Space-Saving Design
Despite its maximum output capacity, the Tempra 36 Plus features a compact, wall-mounted design that requires no venting. This allows flexible installation in utility rooms, closets, or tight mechanical spaces while freeing up valuable floor space.
Durable Construction and Long-Term Reliability
Built with a high-quality copper heating system, the Tempra 36 Plus is engineered for durability and long-term performance. It includes advanced safety and reliability features such as:
- Overheat protection
- Self-monitoring electronics
- Durable, impact-resistant housing
- Minimal maintenance requirements
This ensures dependable operation in demanding residential and commercial environments.
Technical Specifications
- Power: 36 kW (240V) / 27 kW (208V)
- Voltage: 240/208V
- Amperage: ~150A (240V)
- Maximum Flow Rate: Up to ~6.5–7.0 GPM (depending on conditions)
- Temperature Range: Adjustable up to 140°F
- Connections: 3/4" NPT
- Efficiency: Up to 99%
- Electrical Requirement: Typically multiple dedicated breakers
- Compact wall-mounted design
Installation & Electrical Requirements
The Tempra 36 Plus requires a high-capacity electrical configuration, typically involving multiple dedicated breakers and sufficient service capacity. Installation should be performed by a licensed professional to ensure compliance with local codes and optimal system performance.
The unit is UL listed, CSA compliant, and lead-free certified, ensuring safe and code-compliant operation.
Get the Best Price at ProDryers
When investing in the highest-capacity tankless water heater with advanced temperature control, choosing the right supplier is critical. ProDryers is a trusted source for Stiebel Eltron products, offering expert guidance and competitive pricing.
Buy the Stiebel Eltron Tempra 36 Plus (239225) today at the best available price, or request a custom quote for bulk or project pricing.
Contact ProDryers now to secure expert support, aggressive pricing, and a premium tankless solution engineered for consistent, high-performance whole-house hot water.
