David H. Pasadena, CA I would highly recommend this company. My wife and I had consulted multiple other HVAC providers prior to consulting with the Building Doctors and were very impressed from start to finish with the level of professionalism, the vision for the project and the quality of the work done. This provider supplied a detailed energy audit. While we didn't elect to do all the recommended work, we definitely were interested in most. In the end we elected to have our home fully insulated and installation of a new heating and AC system as well as ductwork.