Description
Stiebel Eltron Tempra 15 Plus Whole House Tankless Water Heater
Brand: Stiebel Eltron SKU: Tempra 15 Plus
Product Overview
The Stiebel Eltron Tempra 15 Plus is an advanced whole-house electric tankless water heater engineered to deliver an endless supply of hot water on demand. Operating with an impressive 0.96 Uniform Energy Factor (UEF) and 97% recovery efficiency, this premium unit activates only when water flows, completely eliminating the standby energy losses associated with traditional tank water heaters. Built with high-quality components and featuring professional German engineering, it represents a reliable and highly efficient choice for upgrading your residential hot water infrastructure.
As part of the premium Plus series, this model handles demands with accuracy and structural space efficiency. Its compact, sleek profile replaces bulky tanks, freeing up valuable floor space while mounting seamlessly to the wall. With built-in safety and construction standards matching strict plumbing regulations, the Tempra 15 Plus handles a maximum incoming water temperature of up to 131°F, making it equally capable as a standalone whole-house system or as a highly effective inline booster for specialized home setups.
Key Features:
- On-Demand Electric Efficiency: Heats water instantaneously at the point of use with a 0.96 UEF rating, maximizing your monthly utility savings.
- Compact Wall-Mount Design: Sleek, space-saving dimensions eliminate bulky water storage tanks, allowing flexible installation in tight rooms.
- High-Temperature Boosting Capacity: Safely accepts maximum inlet water temperatures up to 131°F (55°C) to seamlessly support pre-heated systems.
- Certified Safe Build: Meticulously tested and certified to ensure strict code compliance and long-lasting residential safety.
Technical Specifications:
- Voltage: 240 V or 208 V
- Phase: Single 50/60 Hz (Can be wired for unbalanced 3-phase 208V)
- Wattage: 14.4 kW (at 240V) / 10.8 kW (at 208V)
- Amperage Draw: 2 x 30 A (at 240V) / 2 x 26 A (at 208V)
- Minimum Recommended Circuit Breakers: 2 x 30 A (DP)
- Number of Runs & Minimum Wire Size: 2 x 10/2 AWG Copper
- Dimensions: 16-5/8″ W x 14-1/2″ H x 4-5/8″ D
- Weight: 16.1 lb (7.3 kg)
- Nominal Water Volume: 0.26 gal (1.0 L)
- Water Connections: 3/4″ NPT
- Working / Tested Pressure: 150 psi (10 bar) / 300 psi (20 bar)
- Uniform Energy Factor (UEF) / Recovery Efficiency: 0.96 / 97%
- Certifications: Tested and certified by WQA against NSF/ANSI/CAN 372 for lead-free compliance; Conforms to UL Std. 499; Certified to CAN/CSA Std. C22.2 No.88
Installation & Versatility:
- Main Service Infrastructure: Requires a minimum main service panel rating of 100 A to safely accommodate the electrical load requirements.
- Low Flow Activation: Seamlessly turns on at a low minimum water flow rate of 0.50 GPM (1.9 L/min) to accommodate modern low-flow fixtures.
- Standardized Plumbing Lines: Features traditional 3/4″ NPT water connections for straightforward integration with standard residential piping.
- Pressure Durability: Engineered to handle a minimum operational pressure of 30 psi and built to withstand working pressures up to 150 psi.
Common Applications:
- Small to Medium Homes: Acts as a highly efficient whole-house water heating hub in space-constrained residential layouts.
- Inline System Booster: Works perfectly down-line from a primary storage source to boost temperatures over long plumbing distances.
- Cabins & Vacation Properties: Provides a convenient on-demand source of hot water that can be safely powered down when the building is unoccupied.
Frequently Asked Questions:
- Q: What is the maximum temperature rise this unit can provide at a flow rate of 1.50 GPM?
- A: At a flow rate of 1.50 GPM, the Tempra 15 Plus provides a maximum temperature increase of 65°F when supplied with 240V power, and a 49°F increase when operating on 208V power.
- Q: What size electrical wire and circuit breakers are required for installation?
- A: Installation requires two runs of 10/2 AWG copper wire and a minimum recommended 2 x 30 A double-pole (DP) circuit breakers.
- Q: Is this water heater certified lead-free?
- A: Yes, it is tested and certified by the WQA against NSF/ANSI/CAN 372 for strict lead-free compliance.
The Stiebel Eltron Tempra 15 Plus is the ultimate energy-efficient and compact hot water solution for homeowners and professionals looking to optimize residential space and utility efficiency.
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