Tempra 24 Plus Adv Flow Control and Self-Modulating 24 kW 4.68 GPM Residential Electric Tankless Water Heater
- Helps deliver steady water temperature in varying flow rates
- Advanced Flow Control maintains the temperature by reducing flow
- Self-modulating technology uses minimal energy to heat the water
- See More Details
Product Overview
Powerful output, compact design, remarkable energy-saving features. Our whole house electric tankless water heaters perform with the highest standards for comfort and reliability. Tempra Plus models feature Advanced Flow Control, patented in Germany and exclusive to Stiebel Eltron tankless heaters. If hot water demand exceeds working capacity, Advanced Flow Control automatically maintains consistent temperatures by slightly reducing flow. Intelligent self-modulating technology continually ensures the least amount of energy is used to heat the water. A Tempra 24 Plus provides hot water at a consistent temperature for up to 2 bathrooms in warm climates, or 1-2 bathroom in cool climates. See sizing to determine which model is best for you. Stiebel Eltron invented tankless electric water heating technology more than 90 years ago, and is still the industry pioneer and world leader. Our engineering and manufacturing tradition of excellence means you can depend on the performance and reliability of our products.
- Tempra tankless electric water heaters must be correctly sized and you should consult the sizing guide to determine the correct model for you
- This Tempra Plus model has German patented Advanced Flow Control that automatically reduces output flow to maintain temperature if demand temporarily exceeds capacity
- Requires a minimum of 150 Amp total service to the residence, with 2 separate dedicated 50 Amp DP breakers and 2 separate runs of 8-gauge copper wiring for the Tempra 24 Plus itself
- Requires 240 Volt or 208 Volt electric service, and has a maximum output of 24,000 Watts at 240 Volts or 18,000 Watts at 208 Volts
- Supplies endless hot water at a constant and steady temperature from 68 to 140°F (20-60°C) that can be set on the front panel digital display
- Flow rate you achieve from this or any tankless water heater depends on how powerful the unit is and the temperature difference between the incoming cold water and the hot water being delivered
- 99% efficient and typically result in savings of 15-20% in comparison with electric tank water heaters
- Smart microprocessor technology unique to Tempra water heaters delivers steady water temperature even when flow rate vary as taps are adjusted
- Must be installed vertically, water fittings pointing down, with detachable connections such as braided flex connectors to allow periodic filter cleaning and flushing for scale, and an anti-scale filter is recommended if hard water is present
- Professional installation recommended
- Click here for more information on Electronic Recycling Programs
- California residents
Product Overview
- Helps deliver steady water temperature in varying flow rates
- Advanced Flow Control maintains the temperature by reducing flow
- Self-modulating technology uses minimal energy to heat the water
Compare Similar Tankless Electric Water Heaters
 |  |  |  | |
| Brand | EcoSmart | Stiebel Eltron | Stiebel Eltron | Stiebel Eltron |
| Name | ECO 27 Tankless Electric Water Heater 27 kW 240 V | Tempra 29 Trend Self-Modulating 28.8 kW 5.66 GPM Compact Residential Electric Tankless Water Heater | Tempra 24 Plus Adv Flow Control and Self-Modulating 24 kW 4.68 GPM Residential Electric Tankless Water Heater | Tempra 29 Plus Adv Flow Control and Self-Modulating 28.8 kW 5.66 GPM Residential Electric Tankless Water Heater |
| Price | $44835 | Add to Cart to See Price | Add to Cart to See Price | $79900 |
| Ratings | (1387) | (31) | (61) | (63) |
| Flow Rate @ 45 F Rise (gallons/min) | 4.10 | 4.37 | 3.64 | 4.37 |
| Application Type | Residential | Residential | Residential | Residential |
| Wattage (watts) | 27000 | 28800 | 24000 | 28800 |
| Number of Showers | 1-2 | 1-2 | 1-2 | 1-2 |
| Indoor/Outdoor | Indoor | Indoor | Indoor | Indoor |
| Water Heater Features | Wall Mounted | Overheat Protection,Wall Mounted | Overheat Protection,Wall Mounted | Overheat Protection,Wall Mounted |
| Fuel Type | Electric | Electric | Electric | Electric |
| View Product | View Product | View Product | View Product |
Compare Similar Tankless Electric Water Heaters
| | | | |
| Brand | EcoSmart | Stiebel Eltron | Stiebel Eltron | Stiebel Eltron |
| Name | ECO 27 Tankless Electric Water Heater 27 kW 240 V | Tempra 29 Trend Self-Modulating 28.8 kW 5.66 GPM Compact Residential Electric Tankless Water Heater | Tempra 24 Plus Adv Flow Control and Self-Modulating 24 kW 4.68 GPM Residential Electric Tankless Water Heater | Tempra 29 Plus Adv Flow Control and Self-Modulating 28.8 kW 5.66 GPM Residential Electric Tankless Water Heater |
| Price | $44835 | Add to Cart to See Price | Add to Cart to See Price | $79900 |
| Ratings | (1387) | (31) | (61) | (63) |
| Flow Rate @ 45 F Rise (gallons/min) | ||||
| Application Type | ||||
| Wattage (watts) | ||||
| Number of Showers | ||||
| Indoor/Outdoor | ||||
| Water Heater Features | ||||
| Fuel Type | ||||
| View Product | View Product | View Product | View Product |
Specifications
Dimensions
Product Depth (in.)
4.5
Product Height (in.)
16.5
Product Width (in.)
16.5
Water Connection Size (in.)
3/4" NPT
Details
Amperage (amps)
100
Application Type
Residential
Commercial/Residential
Residential
Electricity Phase
Single Phase
Finish Family
White
Flow Rate @ 35 F Rise (gallons/min)
4.68 gal (US)/min
Flow Rate @ 45 F Rise (gallons/min)
3.64
Flow Rate @ 55 F Rise (gallons/min)
2.98
Flow Rate @ 65 F Rise (gallons/min)
2.52
Fuel Type
Electric
Heat Exchanger Warranty
7 Year
Hub Required
No hub connection available
Indoor/Outdoor
Indoor
Maximum Temperature (F)
140
Minimum Activation Rate (gpm)
0.50
Minimum Temperature (F)
68
Number of Elements
2
Number of Showers
1-2
Pack Size
1
Power Options
Hardwired
Product Weight (lb.)
16.1
Remote Access
No Remote Access
Required Volt Connection
240 volt
Returnable
180-Day
Uniform Energy Factor
0
Voice Control Hub Required
No Voice Control
Water Heater Features
Overheat Protection,Wall Mounted
Wattage (watts)
24000
Works With
No additional compatibility
Warranty / Certifications
Certifications and Listings
CSA Listed,ETL Listed,UL Certified
Labor Warranty
No Warranty
Part Warranty
3 Year
Questions & Answers
32Questions12Answers
What's the warranty
Asked by Joe January 30, 20211
Answer3 Years on the parts against manufacture defect and 7 Years on leakage
Does this unit require an expansion tank?
Asked by Ed January 28, 20211
AnswerNo, This unit does not require an expansion tank unless local code requires one.
Is this unit 120v or 240v?
Asked by Duncan January 22, 20211
AnswerThis is a 240 Volt unit
I guess the first step would be to find out what size is best for my home, but more importantly i...
Asked by Gina58 January 22, 20211
AnswerThat would be a good questions for your electrician. Usually it is not a problem. They can also do a "Load Calculation" to tell you how many and what size breakers you can install in your panel. This will determine which water heater you can purchase too. If you have any questions, please feel free to call our Technical Support Department at 1-800-582-8423 Ext 6 Thank you.
I am planning to install the Tempra 24 on the outside wall of my house. I have read that the Tem...
Asked by JohnP January 15, 20211
AnswerYes, the unit must be protected from the rain and critters. The unit can not freeze or it will damage the unit. Do everything you can with insulation or any means to not have the unit freeze. If you have any further questions, please feel free to call our Technical Support Department at 1-800-582-8423 Ext 6. Thank you!
How often do you have to clean it
Asked by sher December 19, 20201
AnswerOn average, doing a flush once a year is sufficient. However, if you have a very high level of mineral in the water, twice a year may be necessary. If you have any further questions, please feel free to call our Technical Support Department at 1-800-582-8423 ext 6. Thank you.
Is this system Energy Star certified? A requirement for many local utility rebates.
Asked by Matt December 14, 20202
AnswersEnergy Star offers no category for tankless electric water heaters so there can be no certification. Their "reasoning" is that at 99-100% efficiency for tankless electric there can be no improvement in efficiency for the category. That makes little sense to me as it doesn't help people decide what is efficient or not.
I live in an older condo building (built 1974) in north Florida. Specifications call for, a minim...
Asked by DocPab October 10, 20202
AnswersComing late with response, most tankless have similar requirements. If this is the way you want to go, get an electrician to provide you with the information you need. It is most likely that you have the capacity.
Does this Water heater need a Heater Temperature and Pressure Relief Valve?
Asked by Jerry September 23, 20201
AnswerNo, it does not require one.
I see by the answer from a prior question that you can also use 8/2 gauge wire for the Tempra 24 ...
Asked by Frede August 19, 20201
AnswerYes it will. Since it is a non-continuous load, you can run 8/2 wire and be just fine.
Customer Reviews
Jul 21, 2020
Installed myself...it was easy...there are videos on YouTube if your not sure..this unit works Gr...
Installed myself...it was easy...there are videos on YouTube if your not sure..this unit works Great...we have used for 3weeks now..zero issues..the kitchen is about 45'away and master bath is about 65' away and we had kitchen sink going, dishwasher going and master bath going and had plenty of hot water!!!..make sure to install flush valves on the unit so you can clean it once a year..there are videos on YouTube for that as well..just search flush tankless water heater...or install if you want to see those videos..Great product...well made!!!..I added an additional water filter just because ..you don't have to do that as the unit already has a filter built into it....but I just wanted to!!!...highly recommend..they have the best warranty as well !!
by Dave
Response from Stiebel Eltron SupportJul 22, 2020
Thank you for your excellent review!!!
Jun 11, 2020
Works really well. Run two showers at once and definitely keeps up. I am located in south Texas s...
Works really well. Run two showers at once and definitely keeps up. I am located in south Texas so water temps are 75 and above. Is a German made water heater which was populate prior to being in tankless heaters coming to the states. Well built easy install. Need two double pole 50 amp breakers and 8/2 wire for install. Love it so far.
by Joey
Response from Stiebel Eltron SupportJun 15, 2020
Thank you for your great review!!
Feb 18, 2021
$700 ;Display didn’t turn on,never worked ....
$700 ;Display didn’t turn on,never worked .
by Heyhector
Response from Stiebel Eltron SupportFeb 19, 2021
Sorry to hear you are having a problem. Please call our Technical Support at 1-800-582-8423 Ext 6. Sounds like it could be a loose plug or easy issue to solve.
Feb 17, 2021
It’s a great unit and does a great job. ...
It’s a great unit and does a great job. My only reservation is that this unit was just 5 years old. Hope this unit lasts a few more years! When they work they work, when they don’t they don’t! No in between!
by ROB
Response from Stiebel Eltron SupportFeb 17, 2021
Glad to hear your water heater is working great. IF you have any questions, please feel free to call Technical Support at 1-800-582-8423 Ext 6. They can answer any questions you have. Thank you!
Jan 27, 2021
excellent machine. make sure you take installation costs (including rewiring)...
excellent machine. make sure you take installation costs (including rewiring) in making any purchase decision like this.
by GEORGE
Response from Stiebel Eltron SupportJan 27, 2021
Thank you for your excellent review and great advise!
Jan 9, 2021
Excellent product. If they had only mentioned in he instructions...
Excellent product. If they had only mentioned in he instructions in which slot the screen wire should go. I had to call technical support to ask.
by Stefan
Response from Stiebel Eltron SupportJan 12, 2021
Thank you for your excellent review!
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