It is an awful product that is not worth the investment.
I have noticed my Bosch AQT 37-13 Wet and Dry cleaner stopped working immediately after the warranty on the product got over.
The trigger gun started leaking and when I took it to the service centre they told me to replace the same. When I asked why this problem occurred, they answered me that due to frequent use the plastic parts wear out.
I have used it not more than 50 and if the parts need to be replaced very often. It isn’t worth buying a product like this. The worst part is that they didn’t have a replacement with them. I would suggest that don’t buy this product because Bosch don’t deliver what they promise.