Compared to plastic-made coffee makers, those stainless steel coffee makers are more safe as they don’t emit harmful and toxic chemicals while being heated. But if you are going to choose a stainless steel coffee maker, get the one without aluminum lining to be on the safer side.  Also, there are other simple to use and reasonably priced coffee makers that are constructed with plastic that’s generally safe to use, such as Mr Coffee Switch brewer. All of the plastic components on this coffee maker that come into contact with your coffee are BPA-free. It is made from Polypropylene, a non-toxic material that is recyclable and has heat-resistant properties. But the safest coffee maker is a drip coffee maker with a glass carafe and a paper filter. You can ensure that it is non-toxic due to the material components being used on the product.