Stiebel Eltron Tempra 29 Plus Tankless Electric Water Heater – On-Demand Hot Water, 28.8 kW, Made in Germany

Efficient On-Demand Hot Water for Your Home

The Tempra 29 Plus from Stiebel Eltron delivers hot water instantly with no storage tank, combining German engineering with modern energy efficiency. Made in Germany, it represents a century of precision in compact, reliable water heating that adapts to your household’s rhythms.

Thanks to exclusive German-patented technology, this unit maintains the desired temperature even as multiple outlets demand water. Its self-modulating system reacts to changing flow, adjusting power to minimize electricity use while keeping comfort levels steady. The result is consistent showers, faster dish cycles, and dependable hot water during peak usage.

Key advantages at a glance

• On-demand hot water: continuous heating as water flows, with no standby tank to heat.
• Temperature stability: automatic regulation keeps the set temperature during peak demand.
• Energy efficiency and potential savings: up to 34% reduction in water heating costs and 99% equipment efficiency.
• Compact, vent-free design: space-saving footprint that simplifies installation in tight spaces.
• Two memory presets: quick access to preferred temperatures for different family members or seasons.
• Self-modulating technology: adapts output to match demand, reducing electricity waste.

Technical and installation notes: The unit requires hard-wired 240-volt or 208-volt electrical service, with a maximum draw of 28,800 watts at 240V or 21,600 watts at 208V. Plan for three dedicated 40-amp breakers with 8-gauge copper wiring and a minimum 200-amp service to the residence. Its wall-mounted, compact form means no venting is needed, and installation can fit a variety of home layouts. Whether it’s morning showers, laundry, or dishes, Tempra 29 Plus is designed to deliver hot water when you need it. See sizing guide to determine the best model for your home’s water needs.

Designed for diverse climates and home sizes

In warm climates, Tempra 29 Plus can provide hot water for up to three showers. In cooler climates, it can support two to three bathrooms running simultaneously. This flexibility makes it a strong candidate for households seeking reliable, uninterrupted hot water without storage tanks.

Stiebel Eltron has led tankless electric water heating for over a century, pairing German engineering with practical performance to meet modern home needs.