I highly recommend that you use Marc Fuentes and Quality Air Plus for all of your HVAC needs. They are prompt, diligent, and do excellent work. They care about you and the air you breath, and they show it.
The company came to install a PTAC for us within a day or so of contacting them. The technicians were prompt and polite, explained what they were doing. Explained the use and maintenance of the system.
Our tech Marc was one of the best i have ever come across! He was very helpful at answering questions, explaining specific issues and he was always available to answer questions or concerns.