A:AnswerYou can get replacement parts from delonghi. But as far as replacing with a different style portafilter, no you can't really. I've seen people on YouTube modify the stock one but that is it
A:AnswerUsing the single shot for 4oz. would be pretty weak. We use the double size and make 4 oz. at a time which provides 2 oz. shots for 2 of us. And each measure needs to be tamped pretty firmly to get a nice strength brew.
A:AnswerHi, ese pods are easy serve espresso pods you can use instead of ground coffee. You can find the pod version of your favorite coffee at many major retailer. Thank you!
A:AnswerYes you can, as Ristretto is traditionally a short shot of espresso coffee made with the normal amount of ground coffee but extracted with about half the amount of water compare to a shot of regular expresso
A:AnswerWe have used our first machine for a year and our second for a couple of months without any issues of any kind!! Machines seem extremely well built!!
A:AnswerYes, the boiler is stainless steel.
Here is a link with more info on this product.
http://theespressocritic.com/delonghi-ecp3420-espresso-and-cappuccino-machine-review/