Last December (2011) I contacted REEis to give me an Energy Checkup. They were prompt to get back to me and schedule an appointment in order to help me get the rebates and credits that would expire at the beginning of the year. They came out, did a thorough check of my home. I mean they went in the attic, took photos to show me and blocked vents and doors to check A/C returns and checked for hot spots in the home. They then went back to the office and sent me a written evaluation on what could be done to help me save energy (cut electric bill). When I spoke to them they were not pushy or tried to over sell me anything. We discussed what I could do and also what I could't afford to do at the time, but perhaps later. I went with a revised quote and they set an appointment for the next week. These were a different crew and they were polite and efficient. They blew new insulation in my attic (25 year old home), and sealed duct work. They took pictures to show me what they had done. I had recessed lighting and they were apparently overheating with all the new insulation, so I called them and they came out and put 'tents' around all the lights in the attic and solved the problem. About a month ago, a light in a bathroom in another part of the house was doing the same thing. I also noticed when up in the attic (I use it for storage) that some of the old tape from previous attempts to fix the leaks was pretty much a mess around the return. REEis doesn't use tape but rather a type of sealant? so this was not their error. So I called Andre and he set up an appointment for someone to come out and take a look to make sure there were not leaks. The two men came, went up, took photos and fixed both the light issue (with another 'tent' and more sealant. They removed the old tape.
I highly recommend REEis. Their commitment to great service was evident. I hope you have an opportunity to use them.