The Paragon Isolation Valve Service Kit is a key component to completing most gas or electric tankless water heater installations and provides peace of mind for hassle-free maintenance or flushing of your tankless system. One of the biggest advantages of a tankless water heater is the ability to install this service valve kit and maintenance the inside components of the unit, especially the heating elements, or winterize the unit without the need to dismantle/remove the unit from the plumbing and/or wall. This will ensure the unit maintains a long and healthy life cycle far exceeding your expectation. Most manufactures of tankless water heaters recommend that one should maintenance their unit every 6-12 months, depending on the harsh conditions of your water supply. With the Paragon Isolation Valve Servicing Kit, you can be at ease knowing that your installation was done right the first time from the start.