Althoff Industries Residential Address: 8001 S. Route 31, Crystal Lake, IL 60014 Phone: 8154557000 Email: wiltshireb@althoffind.com Web: www.althoffhome.com Working days: SU MO TU WE TH FR SA Financing: Financing available - Learn more Blake Wiltshire Director of Residential Service Certifications & Associations: Photos