Whole house humidifiers are common in Alberta due to the extremely dry air in winter. These humidifiers hook directly onto your heating system and feature a controller to set the desired humidity level. They’re ideal for homes with hardwood floors – helping to preserve warranties – and perfect if you suffer from a dry nose or throat. At RT Heating & Air Conditioning we recommend the General Aire brand humidifier, models 570 or 1042. The parts warranty is 5 or 10 years, depending upon which unit you choose.