Yes! Yes! If you are only using your tankless compressor for air-hungry items like drills or air ratchets, but still want to have the ease of a tankless compressor all the time, this is a great option. To increase the compressor's capacity, an extra tank can be attached to an already existing tank. However, adding a tank will slow down the compressor's ability to fill your tank with water and achieve the desired pressure. This can lead to a higher chance of your compressor going out of commission.