Stiebel Eltron 239222 Tempra 24 Plus Whole House Electric Tankless Water Heater
24 kW • 240/208V • Premium Whole-House Performance with Advanced Flow Control and Maximum Efficiency
The Stiebel Eltron Tempra 24 Plus (Part #239222) is a high-capacity, German-engineered whole house electric tankless water heater designed to deliver powerful, consistent hot water with unmatched temperature stability and energy efficiency. Built for 240/208V applications, this model is ideal for larger homes and light commercial environments where multiple fixtures require dependable, simultaneous hot water delivery.
Advanced Flow Control for Superior Temperature Consistency
The defining advantage of the Tempra Plus series is Stiebel Eltron’s patented Advanced Flow Control technology, which ensures consistent water temperature even when demand exceeds the unit’s maximum capacity. Instead of allowing temperature fluctuations, the system automatically adjusts flow to maintain the set temperature.
This results in:
- No cold water bursts during peak demand
- Stable, comfortable hot water delivery
- Reliable performance across multiple fixtures
Intelligent Self-Modulating Technology
The Tempra 24 Plus features microprocessor-controlled self-modulating technology, continuously adjusting energy input based on real-time flow rate and incoming water temperature. This ensures the system uses only the energy required to meet demand, optimizing efficiency without sacrificing performance.
The result is smooth, efficient operation with consistent hot water output, even under changing usage conditions.
High Output for Whole-House Applications
With a maximum output of 24 kW at 240V (18 kW at 208V), the Tempra 24 Plus is engineered to support multiple fixtures operating simultaneously, depending on climate and system design.
This higher capacity provides:
- Greater temperature rise in colder climates
- Increased flow rates across showers, sinks, and appliances
- Reliable hot water during peak usage
The tankless design ensures endless hot water with no recovery time, eliminating the limitations of traditional storage systems.
Energy Efficiency Without Standby Loss
Operating at up to 99% efficiency, the Tempra 24 Plus converts nearly all electrical energy into usable hot water while eliminating standby heat loss. This delivers:
- Reduced energy consumption
- Lower utility costs
- Improved overall system efficiency
Precision Digital Temperature Control
A front-facing digital temperature display allows precise adjustment of water temperature. The system maintains consistent output regardless of fluctuations in demand, ensuring reliable comfort and performance throughout the home or facility.
Compact, Space-Saving Design
Despite its powerful output, the Tempra 24 Plus features a compact, wall-mounted design that requires no venting. This allows installation in utility rooms, closets, or tight mechanical spaces while maximizing available floor space.
Durable Construction and Long-Term Reliability
Built with a high-quality copper heating system, the Tempra 24 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: 24 kW (240V) / 18 kW (208V)
- Voltage: 240/208V
- Amperage: ~100A (240V)
- Maximum Flow Rate: Up to ~4.0–4.5+ GPM (depending on conditions)
- Temperature Range: Adjustable up to 140°F
- Connections: 3/4" NPT
- Efficiency: Up to 99%
- Compact wall-mounted design
Installation & Electrical Requirements
The Tempra 24 Plus requires a dedicated high-capacity electrical configuration, typically involving multiple breakers and sufficient service capacity. Installation should be performed by a licensed professional to ensure compliance with local codes and optimal 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 a high-performance, high-capacity tankless water heater, choosing the right supplier is essential. ProDryers is a trusted source for Stiebel Eltron products, offering expert guidance and competitive pricing.
Buy the Stiebel Eltron Tempra 24 Plus (239222) today at the best available price, or request a custom quote for volume or project pricing.
Contact ProDryers now to secure expert support, aggressive pricing, and a premium tankless solution engineered for consistent, efficient whole-house hot water.
