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Description
Mini 3.5-1 Point-of-Use Electric Tankless Water HeaterStiebel Eltron Mini compact tankless point of use models excel at supplying warm water at a constant temperature for hand washing at a sink. They are ideal for residential or commercial hand washing sink applications. The model must be carefully matched to the flow rate of the sink for proper operation. Mini tankless water heaters heat water instantaneously and endlessly at 99% efficiency as it flows through the unit. Unlike tank water heaters, they
Stiebel Eltron Mini compact tankless point-of-use models excel at supplying warm water at a constant temperature for hand washing at a sink. They are ideal for residential or commercial hand-washing sink applications. The model must be carefully matched to the flow rate of the sink for proper operation. Mini tankless water heaters heat water instantaneously and endlessly at 99% efficiency as it flows through the unit. Unlike tank water heaters, they save energy because they have no stand-by energy losses. The sleek, small design allows installation with the unit visible. Venting is unnecessary. Use the Sizing Guide and Technical Data Chart to determine the correct size for your application. Call Stiebel Eltron at 800.582.8423 with any questions. Meticulously engineered and carefully manufactured, Mini tankless water heaters are designed for years of trouble-free and energy-saving usage.- California residents
- Mini 3.5-1 is designed to provide warm water around 90° to 100° for hand washing at a standard flow (0.66 GPM) lavatory sink
- Mini 3.5-1 is shipped with a 0.66 GPM pressure compensating flow reducer/aerator that fits most faucets and should be installed
- Excels at supplying warm water at a constant temperature for hand washing at a sink but must be carefully matched to the flow rate of the sink to operate properly
- Requires hard-wired 120-Volt electric service, 1 dedicated 30 Amp breaker, 10-Gauge copper wiring, and has 3/8 in. compression plumbing connections
- Not designed for use at a kitchen sink or a shower, or as a booster heater for any application
- Because venting is not necessary, installation can be near the sink to save water and wait time for hot water
- Can be installed above or below the sink with water fittings pointing either up or down
- Uses standard flex connections for easy installation
- Made in Germany
- Professional installation recommended
Features
| Item Weight | 3.44 |
| Minimum Activation Rate (gpm) | .40 |
| Flow Rate @ 45 F Rise (gallons/min) | .53 gal (US)/min |
| Uniform Energy Factor | 0 |
| Flow Rate @ 55 F Rise (gallons/min) | .43 |
| Application Type | Point of Use |
| Pack Size | 1 |
| Finish Family | White |
| Returnable | 180-Day |
| Heat Exchanger Warranty | 2 Year |
| Commercial/Residential | Commercial,Residential |
| Required Volt Connection | 120 volt |
| Flow Rate @ 35 F Rise (gallons/min) | 0.68 gal (US)/min |
| Amperage (amps) | 29 |
| Fuel Type | Electric |
| Indoor/Outdoor | Indoor |
| Wattage (watts) | 3.5 |
| Maximum Temperature (F) | 122 |
| Minimum Temperature (F) | 86 |
| Product Weight (lb.) | 3.44 lb |
| Flow Rate @ 65 F Rise (gallons/min) | 0 |
| Water Heater Features | Wall Mounted |
| Wattage (watts)2 | 3.5 |
| Product Width (in.) | 20 in |
| Product Height (in.) | 48.375 in |
| Product Depth (in.) | 20.5 in |
| Water Connection Size (in.) | 3/4 |
| Certifications and Listings | CSA Listed,ETL Listed,UL Certified |
| Labor Warranty | No Warranty |
| Part Warranty | 3 Year |
Shipping Notes
- Free Standard Shipping on $100+ Orders to the USA.
- Except Preorder products are shipped in 48 hours.
- Delivery to the USA:
- Standard Shipping : 3-10 business days
- If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
- We offer a 30-day return/exchange service after receiving.
- Final sale items are not eligible for returns or exchanges.
- To process your return/exchange, please contact us at [email protected]
- Please click here for more details>>> Return & Exchange Policy
4.9 ★★★★★
Based on 28 reviews
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Product Reviews
★★★★★ 5
Worth it - just buy it!
Color: Matte Black
After a month experimenting with my new Breville Barista Express, I finally decided that a few of the basic accessories actually would make a difference in my coffee, so I got this as well as a distributor tool, and there is a noticeable difference. I consistently get excellent extractions, where before, I would occasionally get a shot that clearly was not distributed and tamped properly. The price for these tools was combined, less than $30 and most definitely worth it!
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Reviewed in the United States on January 4, 2026
★★★★★ 4
Great to use, little difficult to put away
Color: Matte Black
It's a perfect wdt tool and works wonderfully for it's entended purpose. Great weight to it and the base, however the base to store it is very slim, making it difficult to replace once done.
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Reviewed in the United States on January 2, 2025
★★★★★ 5
Good
Color: Matte Black
This is used nearly daily, it’s been about a month, and I haven’t noticed the needles falling out. I didn’t research if these needles were the right size for perfectly distributed coffee, but it breaks up my clumps very easily and efficiently. I made a lot of changes for my new espresso machine that have improved my coffee, and I would guess this would definitely be one of them. If you buy a WDT tool, I did my research and I can’t complain about this one that I bought. It even came with replacement needles. Would buy again. It feels nice, and I even wipe the needles after each use with a wet and then dry towel, and they still stay in place. You can bend them if you want them angled or straight.
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Reviewed in the United States on March 11, 2024
★★★★★ 5
Works well
Color: Matte Brown
I bought these for my Flair Pro 3. It does help declump as expected.
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Reviewed in the United States on December 31, 2025
★★★★★ 5
Wish I had one before
Color: Matte Black
Nice little tool. I never used one before and it does make a difference when evenly distributing the grounds and taking any clumps out.
Would recommend.
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Reviewed in the United States on January 17, 2026