Our AC unit went out during a hot week in May. We quoted several companies and DSM Heating and Cooling was the best price - and they came out the next day.
The men who came to install were extremely courteous and were obviously experienced in AC/furnace installation. They were considerate to both me and my home.
I would recommend this company to anyone who needs AC/furnace work. Excellent experience. I don't usually write reviews, but I was especially anxious choosing a company for such a large repair. I hope this review helps someone else feel confident that they will be treated well by this company, both in service and price.