I should begin this review by stating I don?t normally write reviews. I believe good service should be a given; however ever so often a company goes so far above and beyond that I feel the need to tell others. That has happened with CECS. My wife and I bought our home in November of 2013, and immediately realized it needed some help. It was so cold in the bedrooms that we purchased space heaters for night. Apparently when our house was built in 1958 insulation in the walls was an upgrade, and we had none. Plus, the siding was deteriorating, and the drafts were terrible. Fast forward a couple months, and my wife and I were walking through the Sacramento home show. We met Bryan Gore from Cal Energy Consultant Service, who was engaging and knowledgeable with all aspects of home improvement. During our meeting with Bryan, he told us about the Energy Upgrade California program, which provides rebates for energy upgrades performed on your home. Bryan thoroughly explained the testing processes, and told us we would be an ideal candidate for the program due to the age/condition of our home. When we had the initial test-in, I knew the results would be bad. How bad, however, was a little shocking. Our AC ducts were leaking at almost 65%, and the air infiltration was through the roof. After the test, we sat down with Bryan again to discuss the options for our house. He explained that we would see the biggest gains from installing new AC ducts, air-sealing the attic, blowing in new attic insulation, and installing insulation when we re-sided the house. I have to admit, I was a little hesitant at first. The costs were fairly high, and I was concerned with the idea of using sub-contractors. To me, sub-contractor often means sub-standard. However, that couldn't have been further from the truth. The HVAC contractor, the insulation guy, and the siding team were all extremely knowledgeable, professional, and willing to work with me on timing due to other projects I was working on around the house. Now that the work is done, I honestly can?t believe the changes in my home. We installed a whole house fan with the other upgrades, and it is amazing how little we turn on the AC. Earlier in the summer the AC would be on by 10am. Now we will often not use the AC until 2 or later. In fact, we had no AC usage for the last two weeks in September. In Sacramento. We had the test-out performed, and our building leakage dropped from 3400 CFMs to 1875, and the HVAC duct leakage dropped from 64% to 5%. Plus, we received rebates from SMUD and PG&E to cover almost 25% of the cost! I can?t thank CECS, Bryan Gore, and all of their sub-contractors enough!