This is designed for campers, but what are we? LOL.. as long as you have a water supply,you can have a hot shower. You can even fill the storage container with 4 gallons of water, and use it... the pump is battery powered, and the hot water heater uses standard propane canisters.
ZODI Outback Gear Hot Tap Travel Shower : Amazon.com : Sports & Outdoors
ZODI Outback Gear Hot Tap Travel Shower : Amazon.com : Sports & Outdoors