I have one and will never be without it. It is a godsend when my body is beat up. Winter or summer. You will need a 220 disconnect on porch for it. Do not bother with a 110 v unit. Also they now come as salt water versions and that is a million times better for your body and almost zero maint. And if you do not wear swim suits in it the water stays cleaner much longer. Nothing better than soaking in tub outside while it rains or snows, toddy on the ledge.