Our A/C unit was about 15 years old and we'd been "limping along" with another company for repairs. Stark was recommended to us when we decided to replace the unit and we have been VERY pleased. Stark showed us how the original A/C installation was poorly done, especially with the duct size. Now we have a system that works perfectly and quietly. They were responsive to return for a few "tweaks" as well -one room was too cold - nice probelm to have after years of the old system not cooling correctly!IHighly Recommend!