I have worked with Windy City Air Conditioning & Heating to install commercial heating and cooling equipment on various projects. They are an awesome company, and I have really enjoyed working with them. Most of my dealings are with their owner, and he is a most knowledgeable and dependable person. His staff is also very professional, and friendly and courteous to work with. All in all, it has just been a real pleasure doing business with them! A very professional company!