Vent-Axia’s LoCarbon PoziDry PIV system has gained accreditation from the British Board of Agrément (BBA), it says. A positive i nput ventilation unit, the PoziDry PIV offers a “quick, simple and efficient solution to controlling condensation within a property,” the low carbon ventilation company explains.A mark of quality, safety and reliability, BBA certification provides reassurance that a product is fit …