You know that dream dream encounter, with the perfect company for the job for your home -- where everything is done perfectly and right, on time, and EXACTLY as described, and the results are somehow 10X better than imagined? Until now I would have said its a fantasy, but that is really how good Mohammed and his crew are. This was a huge job, and we did it in the last days of the Pepco rebate offer. The home was not liveable upstairs on some days because of the poor insulation and heat - and the AC bills were astronomical..... Furthermore, we were unaware that there were endless old problems that Mohammed's extremely careful assessment revealed, including parts of the side attics that were exposed to the outside. His initial assessment was a few hours where he went over every inch of the house and did many measurements. He has scientific and engineering training in his background and explains what he is doing very well. He arrived on time, was extremely polite, absolutely thorough, and incredibly patient as he answered question after question. He provides you with a magnificent report, and goes on to explain that report in as much details as you need. The suggested changes come to you in a separate document, excruciatingly specific and each with an explanation as to why they should be undertaken, and what the expected outcome is. This is not some rapidly slapped together report. It has so much information. He then provides a separate analysis of what type of improvement to expect, and I can attest that the improvement in our home is far, far beyond his estimate. On the day of service, the hottest day of the summer, they arrived on time, the covered everything up in every part of the house while working, they worked in 110 degree heat in an attic that may have been 120--and they didn't stop until evening when the house was transformed. They cleaned up everything, left the house spotless ---and Mohammed did all the paperwork needed for the Pepco rebate. It could have been traumatizing, considering there were three separate large attics, and it was not. I am never happy to have to spend a ton of money on a project in this home, and I am almost never happy with the outcome. This is the exception - the best experience we have ever had in many years of home ownership and I am very glad I researched extensively before selecting this company. You may get a cheaper quote from a good number of people, but you will get cheap, poor work. If you want the epitome of professionalism and a job done perfectly, hire this company. I cannot thank them enough.