Stiebel Eltron Tempra 29 Plus Tankless Electric Water Heater – On-Demand Hot Water, Energy Efficient

Experience reliable hot water on demand with the Stiebel Eltron Tempra 29 Plus Tankless Electric Water Heater. Crafted in Germany with a century of engineering heritage, this unit delivers a continuous supply of hot water where and when you need it, without the bulk of a storage tank or the need for venting. Its compact, wall-mounted design fits neatly into modern homes, keeping utility rooms uncluttered and spaces feeling open.

Key benefits at a glance

• On-demand hot water for multiple uses—shower, laundry, and dishes—without a storage tank.
• High efficiency up to 99% and potential energy savings up to 34%, depending on climate and usage.
• Self-modulating technology continuously adjusts energy draw to match demand, reducing unnecessary consumption.
• Vent-free operation with a sleek, space-saving silhouette that mounts on a wall for flexible installation.
• Two temperature memory presets for quick, personalized comfort settings.

Real-life scenarios

• Mornings with back-to-back showers for family members, minimizing wait times and disruption.
• Dishwashing and laundry running concurrently while hot water remains steady and reliable.
• Compact homes benefit from a single unit that takes up less space than a traditional tank.

How it works and installation basics

The Tempra 29 Plus delivers a constant temperature by dynamically adjusting power in real time. It requires three dedicated 40-amp breakers with 8 AWG copper wiring and a minimum 200-amp service. No venting is needed, simplifying retrofits and renovations.

Sizing and compatibility

• Hard-wired 240V or 208V service with a maximum draw of 28,800 watts at 240V or 21,600 watts at 208V.
• Three dedicated breakers and robust cabling to support on-demand heat.
• In warm climates it can support up to three simultaneous showers; in cooler climates it can handle two to three bathrooms.

With more than a hundred years of engineering excellence, Stiebel Eltron stands as a pioneer in tankless electric water heating. The Tempra 29 Plus represents a blend of German craftsmanship and modern efficiency, designed to empower households with faster hot water delivery, minimal footprint, and a future-ready installation path.