Volano UP WBL (A Class) is the premium, high-efficiency model in the Polywarm® Volano UP family. It combines an internally coated steel buffer tank and hydraulic separator with upgraded insulation and a robust metal outer jacket designed for outdoor installation.
In one compact, wall-hung unit, Volano UP WBL provides both thermal buffer volume to reduce heat-pump short cycling and hydraulic separation to decouple heat-pump flow from distribution flow. The A Class insulation reduces standby losses, helping high-performance air-to-water heat pump systems run more efficiently in both heating and cooling modes.
With its metal sheet cover, special anticorrosive treatment, and Polywarm® internal finish, Volano UP WBL (A Class) is the right choice when you want outdoor durability, better energy performance, and a cleaner, more “finished” appearance than a standard outdoor buffer tank.