Look No Further , You're Making A " Smart Choice " Intelligent Service has spent the last 40+ years building and maintaining a reputation as the premier licensed home mechanical services company in the Northwest Suburbs and Chicagoland area. Our 24/7 one-stop shop offers services in Plumbing, Heating, Cooling and Drain Cleaning. We are committed to providing professional expertise, enthusiastic service and most importantly lasting solutions! As a family business, we certainly understand your home is your greatest investment and Intelligent honors this belief in numerous ways. Whether our technicians are rolling out the red carpet upon entering your household or calling ahead to confirm arrival time, we pride ourselves on the commitment to providing the customer with a WOW service.