ComfortNet™-Compatible Communicating System Multi-Position, Variable Speed Outstanding Warranty Protection The MBVC Modular Blower is covered by a 10-Year Parts Limited Warranty on all functional parts. The MBVC Modular Blower is tailor-made for exceptional energy efficiency. This blower is designed with quality components and assembled with excellent craftsmanship Additional Information Before purchasing this appliance, read important information about its estimated annual energy consumption, yearly operating cost, or energy efficiency rating that is available from your retailer.