Want a taste of the good life? Try multiple shower heads. Whether custom or on prefab panels, they're hot. Today you'll learn what things you should consider when you decide to go "multiple." There are two ways to go about it. One is a custom installation with in-wall plumbing, which is beautiful, flexible design-wise and pricey. The other is a prefab shower tower or panel that houses all plumbing and is fitted with any number of spray heads that mount on the shower wall (rather than in it). While either one is great for luxurious bathing and one is more affordable than the other, both require a little extra planning when added to or included in a bathroom design. And that little "extra" is hot water. With each shower head shooting 3 gallons of water per minute, four heads could drain a 40-gallon tank in less than three and a half minutes. For true luxury and long, hot steamy showers, plan on beefing-up your hot water supply, too. Who said luxury was easy? For more tips, visit our Web site at onthehouse.com. And that's the On The House tip for today.