We had our house completely weatherized and retrofitted by ERS. They were extremely professional, they cleaned up very well, plus they were trustworthy, as we both had to work and left our home in the work crew's hands. Our energy bills went down tremendously, and nearly one year later, our house was warm in the winter, and is cool now in the summer, with far less energy usage than before. Their price was very reasonable considering the quality of work and amount needed to get our house up to snuff!  We highly recommend this company.