Stiebel Eltron Tempra 36 Plus Electric Tankless Water Heater 239225

Description

Stiebel Eltron Tempra 36 Plus Tankless Water Heater 239225

Brand: Stiebel Eltron SKU: Tempra 36 Plus 

Product Overview

The Stiebel Eltron Tempra 36 Plus is a premier, maximum-capacity whole-house electric tankless water heater engineered to deliver an endless supply of hot water on demand. Operating at a highly efficient 0.93 Uniform Energy Factor (UEF) and a 92% recovery efficiency, this premium unit activates only when hot water is drawn, completely eliminating the standby thermal losses associated with traditional storage tanks. Built with exceptional German engineering and premium components, it stands as a highly dependable and energy-saving solution for upgrading modern residential hot water infrastructure.

As the flagship model in the advanced Plus series, this system manages demanding multi-fixture hot water loads with precise temperature delivery. Its compact, space-saving design mounts easily to the wall, reclaiming valuable square footage usually occupied by a large tank. Designed to meet strict plumbing safety standards, the Tempra 36 Plus can handle maximum incoming water temperatures up to 131°F, making it perfectly suited as a high-capacity standalone whole-house water heater or as an ultra-efficient inline temperature booster for pre-heated distribution systems.

Key Features:

• Advanced Flow Control Technology: Automatically reduces the water flow rate slightly if demand exceeds heating capacity, ensuring a completely stable and uninterrupted output temperature.
• On-Demand Heating Efficiency: Achieves a 0.93 UEF rating by warming water instantly at the point of use, helping to lower monthly utility bills while reducing energy waste.
• Compact Wall-Mount Profile: Space-saving dimensions eliminate bulky water storage tanks, allowing for cleaner installations in utility rooms, closets, or tight spaces.
• High-Temperature Input Safe: Safely accommodates incoming water temperatures up to 131°F (55°C) to seamlessly support pre-heated inline or commercial-grade utilities.

Technical Specifications:

• Voltage: 240 V or 208 V
• Phase: Single 50/60 Hz (Can be wired for unbalanced 3-phase 208V)
• Wattage: 36 kW (at 240V) / 27 kW (at 208V)
• Amperage Draw: 3 x 50 A (at 240V) / 3 x 44 A (at 208V)
• Minimum Recommended Circuit Breakers: 3 x 50 A (DP)
• Number of Runs & Minimum Wire Size: 3 x 8/2 AWG Copper
• Dimensions: 16-5/8″ W x 14-1/2″ H x 4-5/8″ D
• Weight: 19.0 lb (8.6 kg)
• Nominal Water Volume: 0.39 gal (1.5 L)
• Water Connections: 3/4″ NPT
• Working / Tested Pressure: 150 psi (10 bar) / 300 psi (20 bar)
• Uniform Energy Factor (UEF) / Recovery Efficiency: 0.93 / 92%
• 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 Requirements: Requires a minimum main service electrical panel rating of 300 A to safely accommodate the high electrical operational load.
• Activation Flow Rate: Successfully triggers heating elements at a minimum water flow rate of 0.77 GPM (2.9 L/min) to comfortably support modern home plumbing fixtures.
• Standardized Piping Connections: Built with robust 3/4″ NPT threads to guarantee a straightforward plumbing installation with standard residential copper lines.
• Pressure Durability: Engineered to function smoothly at a minimum operational water pressure of 30 psi and rated to manage working pressures up to 150 psi.

Common Applications:

• Large Residential Homes: Serves as an exceptionally efficient whole-house water heating hub capable of managing multiple high-demand fixtures simultaneously.
• Inline System Boosting: Installs perfectly down-line from a centralized primary water source to maintain and restore proper temperatures over long pipe distances.
• Vacation Properties & Cabins: Provides immediate hot water upon arrival and can be completely powered down when vacant to eliminate off-season utility expenses.

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 36 Plus provides a maximum temperature rise of 92°F when operating on either 240V or 208V power supplies.

Q: What size electrical wire and circuit breakers are necessary for installation?

A: The installation requires three dedicated runs of 8/2 AWG copper wire and three minimum recommended 50 A double-pole (DP) circuit breakers.

Q: Is this water heater safe for drinking water lines?

A: Yes, it is fully tested and certified by the WQA against NSF/ANSI/CAN 372 for strict lead-free compliance.

The Stiebel Eltron Tempra 36 Plus is an exceptionally compact and energy-efficient tankless water heater, making it an ideal choice for contractors and homeowners looking to optimize space and maximize hot water performance.