You can install from a wide range of machines that are available with a cooling system or even without one. But, machines that do not have a cooling system usually do not produce perfect carbonated water. It would be better if you always test the machine in detail to avoid disappointment later. A better bet would be machines that have inbuilt cooling systems as the acid mixes perfectly in the water and these look very professional too. The input is provided through your cold water mains and the output through a tap. These machines do not use too much carbonic acid as the carbonation process is in-line. You can also decide on the carbonation level yourself, often on the tap itself.
These machines accept large containers of carbonated dioxide and hence this results in one liter of sparkling water being produced at an amazing price of 4 cents only. On an average, depending on how much sparkling water you produce and the cost of your machine, you should be able to recover all your money within a short span of 4 years. To enjoy your sparkling water, you can simply infuse a wide range of flavors made by Aromhuset and available worldwide through allfreightfree.com.
Most people love high-end units in their kitchen and since these machines are priced reasonably at 1500 Euros, they can easily be installed in a new kitchen. The value of any kitchen too increases if one were to fit a tap or handle for the cold carbonated water to exit and some people simply buy such devices to enjoy this additional luxury.