Air Design Inc. was a referral from a friend and I hired them to install a new heating and air conditioning system in our home, and do some duct work. I compared with about 4 other companies and found that by far Air Design Inc. had the best ideas and approach for how to make the system work in our house. I was very happy with their work and have no complaints. They were very organized, professional, patient, and knowledgeable. Their pricing was fair, they did quality work, and were very responsive. I feel that they really know what they are doing and I will be reaching out to them to install a humidifier soon!