American Certified Services, Inc. is Sioux Falls, South Dakota’s #1 choice for garage door repair and garage door installation. We are a locally-owned and operated garage door business in Sioux Falls that places a high premium on top-notch customer service. When you call American Certified Services, you can expect to be treated like family. American Certified Services is Sioux Falls’s full-service garage door repair expert. We know that not having a working garage door is more than just an inconvenience – it can put your entire life on hold.