I was having trouble with my air conditioning unit, and I needed a second opinion on the unit, so I called up Windy City Air Conditioning & Heating to check on it. They just made sure that things were running smoothly and from what I can tell, they were very knowledgeable and professional. The pricing for their work is okay and I would give them high marks across the board. I would definitely recommend them to other people based on the experience that I had and I would use them again in the future. They did an excellent job, so I'm happy.