Promotional value expires 120 days after purchase. Amount paid never expires. Appointmet required, contact merchant via call or text to set up an appointment. Valid only within Edmonton city limits. Not valid for condos, commercial buildings, coach homes, mobile homes, apartment buildings, townhouses, and homes outside city limits. For estimates on these style of residences please contact the office. All ducts must be cleaned. Extra $12 fee for each additional duct. Extra $35 fee for high efficiency furnaces; no additional fees for coils. Voucher customers will receive a voucher for $25 off the installation of a new General Aire 570 humidifier when booking. Only valid for standard size filters. Not valid for rental properties. Limit 1 per person, may buy 1 additional as gift(s). Limit 1 per household. All goods or services must be used by the same person. Merchant is solely responsible to purchasers for the care and quality of the advertised goods and services.