I recently used the services from Windy City Air Conditioning & Heating to have some repair work done on a couple air conditioner units. The repairs went well but they overcharged for the transformers that were needed, there were 2 Transformers one large and one small but they were both being priced at the same price point. The work from Windy City Air Conditioning was done well but the prices for what I needed were higher than expected, I would use them again if they stop overcharging for the parts they need.