Excellent, fast, professional service. I called when my gas furnace suddenly went out during a snow storm. They were willing to come out on the spot for a very reasonable price. The boiler ended up coming back on, but I set up an appointment with them for the following day. The technician arrived even earlier than anticipated and was very courteous. I don't have much experience with furnaces, so he took me step-by-step through how the furnace should work as he checked every part. In the end, he ended up doing a regular maintenance and replacing a part, all for a couple hundred dollars. He even didn't charge me any extra for the evaluation and gave me a discount on the part that he replaced. I was very happy with the service and the professional demeanor of the technician and would recommend Ideal Air to my friends and family.