Got the following list from Denver Energy We were looking for insulation and air sealing About Saving Heat (303) 549-6900 (getting an estimate only 4 reviews but all 5 stars)) Blue Valley Energy, LLC (303) 993-2645 Energy Geeks (303) 913-2153 Jebco Heating & Air Conditioning (303) 573-7100 Mile High Windows, Solar and Landscape Inc. (720) 490-5554 Precision Home Performance (720)…