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๐ฅ Instant warmth, zero waitโupgrade your daily flow!
The KB Tools Instant Water Heater is a 3500W tankless electric system designed for in-line installation under sinks or beside showers. Featuring an energy-efficient DAFI heating element, it delivers hot water instantly while maintaining consistent water pressure. Its compact, wall-mounted design saves space and fits modern interiors. Ideal for kitchens, bathrooms, and quick showers, it requires professional installation to ensure safety and optimal performance.

| ASIN | B09V7CV3J3 |
| Best Sellers Rank | 37,935 in DIY & Tools ( See Top 100 in DIY & Tools ) 36 in Water Heaters & Parts |
| Brand | KB Tools |
| Colour | White |
| Country of Origin | Poland |
| Customer Reviews | 3.6 out of 5 stars 34 Reviews |
| Efficiency | A |
| Heat Output | 3500 Watts |
| Included Components | Adapter |
| Is Electric | Yes |
| Manufacturer | Formaster |
| Manufacturer Warranty Description | 3 years. |
| Material | Plastic |
| Model Number | IP3.5kW |
| Mount Type | Wall |
| Power source | Corded Electric |
| Special Features | Energy Efficient |
| Special feature | Energy Efficient |
| Style | Indoor Installation |
| Unit Count | 1.0 count |
| Voltage | 230 Volts |
G**L
Instant hot water
This little under sink water heater works well in our remote downstairs loo. Saving long pipe runs from the hot tank.
M**N
H
Did not work at all.
K**S
Very good, high quality product. Recommended!
Very good, high quality product. Recommended!
M**O
Delivered promptly
I bought this to save energy heating litres of water by the combi boiler to reach the bathrooms miles away, so you end up washing hands in cold water anyway and all the hot in the pipes is wasted. In that respect, this will be a great saving, as it does heat quickly to warm enough for hand and face washing, but the flow rate is necessarily slow. At 3.75 kW, it seemed to blow a 13amp fused spur and cut out, so it may need a higher rated connection. We did that and it works. We've plumbed it in a way that can easily switch back to boiler if necessary, or f energy prices ever revert to something like normal.
M**W
ok
ok
T**E
Faulty - fixed pipe was damaged so it leaks.
Could not use the product as it arraived damaged. Very annoying. Hopefully the next one will work. Really disappointed.
Trustpilot
1 month ago
3 days ago