Thermoflow 3.5KW Mini Tankless Water Heater Electric, Elex3.5 Point of Use On Demand Instant Hot Water Heater for Sink Wash Only Wall Mounted, CSA Certified 4.7kW at 240 Volts Wall Mounted

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Elex 3.5
Guaranteed to ship within 1 to 3 business days if product is available

From the manufacturer

3.5kw point of use tankless water heater electric


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Live Smart, Life Better!

'thermoflow' is mainly concentrate on comfortable tankless and minitank electric water heaters, giving people a comfort and healthy life start from the heat. Since the core conception, we have utilized the German technology to engineer the products with maximum energy saving operation. Our mission is to improve the people’s life and to spread awareness of benefits from 'thermoflow' products.

An Ideal Solution For:

  • Strip Malls
  • Bathroom Sinks
  • Basement Wet Bars
  • Doctor's Office
  • Kitchenettes
  • Patio Sinks
  • Small Apartments

thermoflow Elex 3.5 Mini Tankless Water Heater Electric


Saves Energy & Money - Adopts to advanced technology of Germany. Changing to this Elex 3.5 means no standby losses. No need to preheat before using, no waste for water or electricity.

Endless Hot Water - Instant hot water thanks to rapid and maintenance-free bare wire heating systems. For as long as it is needed, there is an endless supply of hot water.

Easy Installation - Very compact designed, saving valuable living space and providing endless hot water on demand.

  • Dimensions: 7.4" x 5.4" x 3.4"
  • Weight: 3 lbs
  • Water Connections :1/2” NPT
  • Water Pressure: 15 - 150PSI
  • Nominal Current: 25A
  • Required Breakers: 1x 2-Pole 25A
  • Required Wire: 1 x 12 AWG
  • Note: Breakers and wire are not included
tankless water heater

Electric Point of Use Tankless Water Heaters

thermoflow Elex 3.5 electric tankless water heater is a true Point of Use Model because it is specifically designed for over or under the sink, multiple applications and the temperature rise 45°F at 0.5GPM. At 72°F inlet temperature the Elex 3.5 can heat 0.72 gallon per minute to 120°F. It can also heat one hand sink emitting 0.5 gpm to 105°F with inlet temperature as low as 57°F. Its compact size allows for over or under the sink installations. The Point of Use models are ideal for: Wet Bars, Strip Malls, Doctor's Office, Bathroom Sinks. When sized properly this water heater will provide endless hot water.


Multiple Applications for thermoflow Electric Tankless Water Heaters

hot water washing

Brushing teeth

dishes washing

Washing vegetables

Instantly Hot Water

As soon as you open the tap, the water flows with your desired temperature. The water is only heated in the amount and for the time you actually need it. Due to short water lines and modern technology.

Saving Energy

No more long water lines and circulation losses because the units are installed directly at the point of use. The water is no longer preheated and stored in large amounts.That saves energy. And it saves investment costs: Long water lines, circulation pumps and hot water tanks are no longer necessary.

More Hygiene

Electric instant water heaters heat up the cold water to the perfect temperature within seconds, directly at the tap, as it flows through the unit. The heated water is used immediately and unused water is avoided in the water line systems. That’s why testing for Legionella bacteria becomes unnecessary. This is what makes de-centralised water heating more hygienic and efficient.

Great for Small Spaces

Water heaters are compact and lightweight and can be undersink or oversink installed - features a sleek and attractive design to blend seamlessly with decor, very friendly to any small spaces.


3 Smart Steps for Choosing Tankless Water Heaters

Find your location

Choose the one you need

check specifications of thermoflow 3.5kw electirc tankless water heater

Determining your average inlet water temperature is important, this allows you to determine how well your unit will perform in your desired location. PS: Actual inlet temperature may be affected by local variations and seasonal changes.

Next you will determine how many applications your unit can run simultaneously at your chosen location inlet water temperature.

Determining specs and electrical infrastructure is important because without the correct infrastructure your unit may not fit onto your breaker panel.

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【1 YEAR WARRANTY 】We offer you 1 year warranty and please contact customer service team for replacement or after-sales service during the warranty period via hotline or email.
Returns Policy

You may return most new, unopened items within 30 days of delivery for a full refund. We'll also pay the return shipping costs if the return is a result of our error (you received an incorrect or defective item, etc.).

You should expect to receive your refund within four weeks of giving your package to the return shipper, however, in many cases you will receive a refund more quickly. This time period includes the transit time for us to receive your return from the shipper (5 to 10 business days), the time it takes us to process your return once we receive it (3 to 5 business days), and the time it takes your bank to process our refund request (5 to 10 business days).

If you need to return an item, simply login to your account, view the order using the "Complete Orders" link under the My Account menu and click the Return Item(s) button. We'll notify you via e-mail of your refund once we've received and processed the returned item.


We can ship to virtually any address in the world. Note that there are restrictions on some products, and some products cannot be shipped to international destinations.

When you place an order, we will estimate shipping and delivery dates for you based on the availability of your items and the shipping options you choose. Depending on the shipping provider you choose, shipping date estimates may appear on the shipping quotes page.

Please also note that the shipping rates for many items we sell are weight-based. The weight of any such item can be found on its detail page. To reflect the policies of the shipping companies we use, all weights will be rounded up to the next full pound.

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