Stiebel Eltron Tempra 29 Plus Tankless Water Heater Review Advanced Flow Control Insights

Description

Highlights of the Stiebel Eltron Tempra Plus 29 kW

The Stiebel Eltron Tempra Plus 29 kW impressed me with its self-modulating power technology and advanced flow control, which really deliver on the promise of consistent hot water temperature. The unit’s ability to automatically adjust power based on flow rate means it keeps the water temperature steady even if multiple taps are running simultaneously. That’s a huge plus for anyone tired of sudden cold blasts when someone flushes the toilet or starts a dishwasher. The digital temperature display and easy-to-use dial let me set water temperature anywhere from 86°F to 125°F (30°C to 52°C), giving precise control without any complicated menus.

• Consistent hot water temperature regardless of flow
• Easy-to-read digital display with adjustable temperature dial
• Energy savings of up to 15-20% compared to traditional heaters

Design and Installation Experience

This tankless water heater boasts a sleek gray design that fits neatly on the wall, taking up far less space than bulky tank models. The hinged cover was a thoughtful addition, making access to internal components straightforward without needing to remove the entire unit—handy for quick maintenance or inspections. Installation was simpler than I expected because there’s no venting required, which also means fewer safety concerns and less hassle running exhaust pipes outside. The unit’s weight is manageable at around 10.37 pounds, and its dimensions (16.54 x 4.61 x 14.53 inches) make it suitable for tight spots in utility rooms or even closets.

Performance and Energy Efficiency

One of the most impressive features is the self-modulating power technology, which adjusts the wattage precisely to meet hot water demand without wasting energy. This led to noticeable savings on the electric bill, especially since the system claims an energy efficiency improvement of up to 15-20%. The heater handles flow rates well, and the maximum temperature increase of 92°F is enough for most household needs. However, the unit does require a 3×50 amp circuit breaker and 3 x 8 gauge wiring, which might mean some electrical upgrades depending on your home setup. The working pressure of 150 psi fits typical residential plumbing, so no issues there.

Limitations and Areas for Improvement

Despite many advantages, a few drawbacks stand out. The initial electrical requirements could be a barrier for some users, especially in older homes without adequate wiring or breaker capacity. Also, while the heater’s flow sensor and temperature controls are advanced, it sometimes felt a bit slow to react to rapid changes in water demand, causing brief temperature fluctuations. The digital display is helpful, but it lacks some of the connectivity features found in newer smart water heaters, such as remote monitoring or app control. For those used to gas-powered systems, the electric model may not deliver the same flow rate, especially in very large households with multiple simultaneous hot water uses.

• Requires significant electrical capacity (3×50 amp breaker)
• Slight delay in temperature adjustment during rapid flow changes
• No smart home integration or remote controls

Price Performance

Considering the technology packed into this heater, the price to quality ratio feels reasonable. Compared to gas tankless heaters, this unit is often cheaper upfront and much easier to install without venting hassles. While it’s not the cheapest electric model available, the energy savings and reliability make it a worthwhile investment for homeowners seeking a long-term solution. The seven-year warranty against leaks and three years on parts add confidence, reinforcing the product’s reputation for durability. In my experience, the convenience of endless hot water and stable temperature balance justifies the cost.

Product Comparisons and Market Rivals

The Tempra 29 Plus competes with other high-output electric tankless water heaters like the EcoSmart ECO 27 and Rheem RTEX-29. Compared to the ECO 27, the Tempra 29’s advanced flow control provides smoother temperature regulation, which is a big plus in homes with fluctuating water use. Rheem’s model offers similar wattage but lacks the same level of precision in power modulation, which can lead to more temperature swings. However, both competitors often come at a slightly lower price point. Gas models like Rinnai or Noritz provide higher flow rates but come with venting requirements and higher installation complexity. For those prioritizing safety and simplicity, this electric model stands out.

User Experience and Household Impact

My family noted the immediate improvement in shower comfort—no more cold shocks, even when someone else was running water elsewhere. My partner especially appreciated the digital control, making it easy to fine-tune the temperature without fiddling with manual knobs. A coworker with a larger household plans to upgrade to a similar system after hearing how this model handled multiple simultaneous uses without dropping temperature. Installation professionals I spoke with praised the unit’s compact size and lack of venting needs, which simplifies placement options and reduces labor costs.

Drawbacks to Keep in Mind

Some users may find the installation requirements limiting, especially if their home’s electrical panel is outdated. The absence of smart features may disappoint tech enthusiasts who want to monitor water usage or adjust settings remotely. Occasional temperature fluctuations during sudden changes in flow could be inconvenient for those seeking perfectly steady water temperature at all times. Finally, the discontinued status of this exact model means future support and parts availability might be uncertain, so checking with suppliers before purchase is wise.

• Electrical upgrades might be necessary for installation
• No app or remote control functionality
• Minor temperature fluctuations can occur during rapid flow changes
• Discontinued model status may affect long-term support

This review pulls together my personal experience with the electric tankless water heater alongside insights from other users to give a balanced perspective. Its advanced features, energy efficiency, and ease of installation make it a strong contender for anyone seeking a modern electric water heating solution, though it’s wise to consider your home’s electrical infrastructure and the potential lack of smart features before deciding.

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