This is not the outdated jetted bathtub from years past ... “Oval and round tubs tend to lean more modern,” Simpson says, “while rectangular tubs are more traditional.” ...

These days, hot tubs are warmed with electrical resistance heaters and have built-in jets that create a massage-like effect. The basic components of a modern hot tub are the body, pump and filter.

Related: 48 Modern Bathroom Ideas for a Spa-Like Escape ... If you're considering a jetted bathtub, you'll need to plan for the pump, air switch, and electric timer. Many pumps fit within the ...