Hello. My client fabricated this towel warmer with copper pipe and hot water circulates through it. You can also get electric towel warmers. Simply Google towel warmers and decide if you want to use circulating hot water or electricity. I hope it helps.

To be honest, I'm not very familar with the details of towel warmers. It might be helpful to go to a local showroom at a Fergeson's or similar and talk with a salesperson.