I am not in the habit of dealing with AC and Heating companies often as that task has usually fallen to my roommates in the past, but I was pleasantly surprised with my dealings with HACH.
It had been awhile since my roommate had had his AC checked out and it started to show. Several rooms in the house were simply not getting cooled down, so we gave HACH a call. I was happy to note that they were able to do a free inspection. Some of the other companies I have had to call for the business I work for charge upwards of $50 for a site inspection. Not the case with HACH.
The employee checked over the AC and notified me that two ducts were cracked and even showed them to me upon request. Shortly after they were replaced the employee was on his way and the AC was back to normal!