Len, my installer for Total Comfort, was supposed to have help installing my new AC unit. Or so the salesman said. Len arrived on time and called me 45 minutes before he was going to arrive, which I requested. When Len discovered that my furnace must have been installed before the lower level of my house was finished and in so doing, they blocked the typical access. Len was faced with a problem which he solved amazingly. I've never met a man so determined with such problem-solving skill. He was totally professional, friendly, on task with a fine attention to detail. I highly recommend Len for a bonus, promotion and raise. Len is an example of a professional installer who should be in charge of teaching other installers. He's the best I've encountered in all my 70 years!!