A:AnswerYes the filters need to be changed once a month, and you can buy them at any store. They come in a 2 pack, and they run around $ 8.00pk. I do think they also come in a 10 or 12 pack, but I haven't purchased them this way. I've owned this since December 2016.
A:AnswerI just purchased the Keurig K425 Brewer and it has a 3 prong plug. It holds 70 oz of water and has different settings that make it nice. I love the K425. I previously had the K50 which was a very basic version but it did the job and lasted 4 years of daily brewing.
A:AnswerMy K425 did not come with any accessories. I bought the reusable K-cup for my own coffee grounds and will be purchasing the carafe soon. There are no samples or filters included either.
A:AnswerYes you must use the carfe pod when using the carfe but it is so worth it if more than one person is drinking at the same time. If not you should use the single serve. You also have the option to purchase the reusable pod or carfe pod. If cost is a factor or they do not sell you brand the reusable pod is worth the price. I have both.
A:AnswerAs for how much water to use, there should be a maximum water level marker on the water container. You don't actually need a filter, but if you really want to get the pure flavor of the coffee you should probably get one. Look up accessories for your model. As for the pod, lift the handle on the front of the coffee maker and drop it in the hole.
A:AnswerOnly certain machines are made for the carafe. I don't know if your model supports one. But the carafe you bought was not a thermo one. I have both and you are right about the one you bought not keeping the coffee hot. I would suggest the thermo one.