Stiebel Eltron Tempra 24 Trend Tankless Water Heater 239216
The Stiebel Eltron Tempra 24 Trend is a high-performance, whole-house electric tankless water heater engineered to deliver an endless supply of hot water on demand. Operating at a notable 0.96 Uniform Energy Factor (UEF) and a 97% recovery efficiency, this unit activates only when hot water is needed, completely eliminating the standby energy losses associated with traditional storage tank models. Built with precision German engineering and high-quality parts, it stands out as an exceptionally reliable and energy-efficient solution for upgrading your residential hot water delivery.
As a core model in the Trend series, this system manages your hot water demands within a compact, wall-mounted enclosure that saves valuable floor space. Its durable construction complies with strict plumbing regulations and safely handles maximum inlet water temperatures up to 131°F. This makes the unit remarkably versatile, allowing it to function effectively as either a standalone whole-house water heater or as a highly effective inline temperature booster for pre-heated systems.
Key Features:
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On-Demand Heating Efficiency: Achieves a 0.96 UEF rating by heating water instantly at the point of use, effectively lowering utility costs and wasting less energy.
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Space-Saving Wall Mount: Compact physical dimensions completely eliminate the need for a bulky water storage tank, creating clean, flexible installation opportunities in tight spaces.
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High-Temperature Input Safety: Accommodates maximum inlet water temperatures up to 131°F (55°C) to easily support inline or pre-heated utility setups.
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Certified Lead-Free Build: Thoroughly tested and certified to ensure strict material safety and dependable code compliance for residential drinking water.
Technical Specifications:
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Voltage: 240 V or 208 V
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Phase: Single 50/60 Hz (Can be wired for unbalanced 3-phase 208V)
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Wattage: 24 kW (at 240V) / 18 kW (at 208V)
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Amperage Draw: 2 x 50 A (at 240V) / 2 x 44 A (at 208V)
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Minimum Recommended Circuit Breakers: 2 x 50 A (DP)
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Number of Runs & Minimum Wire Size: 2 x 8/2 AWG Copper
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Dimensions: 16-5/8" W x 14-1/2" H x 4-5/8" D
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Weight: 16.1 lb (7.3 kg)
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Nominal Water Volume: 0.26 gal (1.0 L)
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Water Connections: 3/4" NPT
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Working / Tested Pressure: 150 psi (10 bar) / 300 psi (20 bar)
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Uniform Energy Factor (UEF) / Recovery Efficiency: 0.96 / 97%
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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:
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Main Service Requirements: Requires a minimum main service electrical panel rating of 150 A to safely support the full operational load.
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Low Flow Activation: Successfully triggers the heating elements at a minimum water flow rate of 0.50 GPM (1.9 L/min) to easily accommodate modern low-flow plumbing fixtures.
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Standardized Piping Connections: Outfitted with robust 3/4" NPT fittings to ensure straightforward plumbing integration with standard copper lines.
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Pressure Tolerances: Designed to function smoothly at a minimum operational pressure of 30 psi and rated to manage working pressures up to 150 psi.
Common Applications:
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Whole-House Residential Use: Serves as a highly efficient whole-house water heating hub for small to medium-sized homes, apartments, or condos.
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Long Pipe Run Temperature Boosting: Installs perfectly down-line from a centralized primary water heater to restore and maintain proper temperatures over long pipe distances.
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Vacation Properties & Cabins: Offers immediate hot water upon arrival and can be completely shut down when vacant to prevent unnecessary off-season power usage.
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 24 Trend provides a maximum temperature rise of 92°F when powered by 240V, and a 82°F rise when operating on 208V.
- Q: What size electrical wire and breakers are necessary for installation?
- A: The installation requires two dedicated runs of 8/2 AWG copper wire and two 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 24 Trend 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.
