I called TopTec to replace another toilet wax seal that has been leaking. I am a repeat customer based on my prior experiences with TopTec employees. Mostapha and Jesse were both professional and courteous while they were in my house working. Since 1993, TopTec Heating, Cooling, Plumbing & Electrical has offered outstanding HVAC, plumbing, electrical, and duct cleaning services in Libertyville, IL. At TopTec Heating, Cooling, Plumbing & Electrical, we're a family-owned-and-operated company that provides only the highest-quality service and services all makes, brands, and models.