The Hydro-Quip Pure Heat In-Line is a versatile heater designed for jetted tubs or whirlpool baths. Its sleek, stainless steel housing can withstand high heat and its adaptable configuration offers reversible mounting, making installation easy. The Pure Heat heater has a convenient in-line design that mounts easily with its quick connect unions. With a 7" length, the Pure Heat heater can fit into compact spaces with ease and also adapts to 1-1/2" PVC plumbing. Using 230v and 2.0kW, this vacuum activated heater provides effective heating without the hassle.