Frequently Asked Questions


Orders placed in the Netherlands before 4:30 PM will be delivered the next day. Order in Belgium: ordered before 4:30 PM on workdays will be delivered the next day. Did you place the order during the weekend? Your order will then be delivered on Monday.

We deliver all orders to you free of charge.

You have 14 days to try out Techweise products. If you are not satisfied, you can return your order within 14 days.

Of course! As soon as we have processed your order in our warehouse, you will immediately receive a Track & Trace code from us.

Product questions

We have written a clear article about this. You can find this by clicking here!

Currently our sewer hoses are only suitable for the Kärcher high-pressure cleaner K2 to K7.

It is extremely important that the Sewer Hose touches the top of the pipe as it enters the pipe. Is the pipe actually going up? Then the sewer hose should touch the bottom of the pipe.

By making long strokes with the sewer hose within the pipe in and out, you will see that you can get through bends and obstacles. In addition, give the Sewer Cleaning Hose the option to launch itself by pressing the pistol grip of the Kärcher high-pressure machine with pauses. Repeat this process several times.

The maximum bend that the pipe may have for the hose to function correctly is 90º with a diameter of 40mm. In practice, it may happen that the pipe in question is slightly thicker or has a bend that is just too large. The above dimensions are therefore maximum.

Warranty, customer service & payments

At Techweise we offer a three-year warranty on all our products. Your product must be registered with us for this. You can do this quickly and easily by clicking here .

Providing good service is what we are all about. That's why our customer service is available 24/7! You can easily contact us by clicking here.

You pay via our webshop via a secure SSL connection. We offer our Dutch and Belgian customers the following payment methods: Visa, Mastercard, American Express, IDEAL, Bankcontact, PayPal, Apple Pay, Maestro and Klarna.