What is included in the cost of leco support? Phone and internet (e-mail) support through our Global Service and Support network is included with every instrument purchased from LECO free of charge. Features such as Preventive Maintenance Packages, on-site visits, and SmartLine Remote Diagnostics may incur additional charges.How do i unsubscribe from leco emails? You can unsubscribe at any time by emailing [email protected]. Information regarding the handling of user data can be found in our Privacy Policy. What can we assist you with?*Why choose leco for your instrument and laboratory needs? Your LECO Sales Representative can provide you with more information on what additional service packages would be the best fit for your instrument and laboratory needs. “Leco and all its personnel, from online tech support, to service engineers, and yes, even sales have been professional and courteous for decades.