Firstly, to install this machine into the wall, you would need to buy a water filter so that water can be successfully plumbed into the brewer. One such cheap filter coffee machines online - https://www.filtercoffeemachine.co.uk/ expense is about 50% of the integrated in coffee machine. With discounts, brew reveal costs about $400, so the water filter would be around $200. So, instead of paying simply $400 for a machine, you would have to cough out $600.<br> <br> <br> <br> <br> <br> <br> <br>