One of the nicest things about 110v or “plug and play” hot tubs is that once it’s sitting in your backyard, all you have to do to enjoy it is fill it up and plug it in. You don’t need to hire an electrician and hard wire anything. Because it only draws 11 amps, it can be plugged into a regular outdoor outlet. And this particular hot tub is actually made by Viking.  You can change it over to a 220v and hardwire it at any time.  If you're like us and own an old house ... this couldn't be more perfect.  It seems like it might be a great purchase for a renter as well because all you do is plug it in.  No permits or electricians needed.  -- In regard to how it works ... I can't even tell that it's running at 110 volt.  To me it's just as powerful as any other hot tub I've been in.  And the lights and the waterfall are a bonus!!