TDH Mechanical is a family owned company located in Chicago. We have 3 decades of experienced in providing both residential and commercial heating and cooling services. Our services include air conditioning installation and repairs, heating and cooling repairs, furnace repairs, air quality and geothermal service and more. We supply quality and reliable heating and cooling products at competitive prices. We serve Cook County, Kane County, Chicago Neighborhoods, DuPage County, Lake County and McHenry County areas.