In winter, the air inside most homes tends to be dry and stale. This is hard on the lungs and leads to dry skin, sore throats and transmission of colds. You can avoid this situation by utilizing a good quality humidifier. The most efficient humidifier we’ve found is the Venta Airwasher LW25. It requires less power, less water and fewer cleanings than most humidifiers. It has a 10 year warranty and it’s made in Germany.