A · B · C · D · E · F · G · H · I · J · K · L · M · N · O · P · R · S · T · U · V · W · Y · Z
| Company | Location | County | Certifications | License # |
|---|---|---|---|---|
| Sailer, Jacob | Rapid City, SD | — | Installer | — |
| Sampson, Nicholas | Sturgis, SD | — | Installer | — |
| Savageau, Floyd | Rapid City, SD | — | Installer | — |
| Schaeffer, Logan | Hermosa, SD | — | Installer | — |
| Schaub, Rodney | New Underwood, SD | — | Installer | — |
| Schmahl, Brian | Webster, SD | — | Installer | — |
| Schmidt, Bryan | Aberdeen, SD | — | Installer | — |
| Schmidt, Paul | Nemo, SD | — | Installer | — |
| Schmitz, Cory J | Custer, SD | — | Installer | — |
| Schnose, Thomas | Hot Springs, SD | — | Installer | — |
| Schoenfelder, Austin R. | Mitchell, SD | — | Installer | — |
| Schott, Tristan | Piedmont, SD | — | Installer | — |
| Schramm, Lonny G | Hot Springs, SD | — | Installer | — |
| Schwader, Evan | Howard, SD | — | Installer | — |
| Schweer, Kyle | Milbank, SD | — | Installer | — |
| Scott, Micheal L | Plankinton, SD | — | Installer | — |
| Scott, Zach | Plankinton, SD | — | Installer | — |
| Seaman, Dustin | Sturgis, SD | — | Installer | — |
| Seppanen, Brent M | Lake Norden, SD | — | Installer | — |
| Seppanen, Gary | Toronto, SD | — | Installer | — |
| Seppanen, Martin J | Lake Norden, SD | — | Installer | — |
| Severson, Cody W | Sturgis, SD | — | Installer | — |
| Seward-Zuhlke, John | Aurora, SD | — | Installer | — |
| Seward, Jeff B | Spearfish, SD | — | Installer | — |
| Sheesley, Ryan G | Mitchell, SD | — | Installer | — |
| Sherlock, Justin | Vermillion, SD | — | Installer | — |
| Shillingstad, Wyatt | Sioux Falls, SD | — | Installer | — |
| Shively, Jeremiah | Hot Springs, SD | — | Installer | — |
| Shoenrock, Rick E | Colman, SD | — | Installer | — |
| Shroyer, Josh | Rapid City, SD | — | Installer | — |
| Siebenthal, Mark V | Hot Springs, SD | — | Installer | — |
| Sievers, Branden | Brookings, SD | — | Installer | — |
| Simunek, Steve | Oral, SD | — | Installer | — |
| Sirovy, Kevin | Valley Springs, SD | — | Installer | — |
| Sjolie, Mark J | Lake Preston, SD | — | Installer | — |
| Skinner, Chad | Sturgis, SD | — | Installer | — |
| Skorpak, Chris | Black Hawk, SD | — | Installer | — |
| Slate, Tanner | Harrisburg, SD | — | Installer | — |
| Smith, Diana | Black Hawk, SD | — | Installer | — |
| Solseth, Gerrit | Rapid City, SD | — | Installer | — |
| Solum, Nathan S | Aberdeen, SD | — | Installer | — |
| Sorensen, Aaron | Hemingford, SD | — | Installer | — |
| Soukup, James | Sioux Falls, SD | — | Installer | — |
| Sowards, Zachary | Rapid City, SD | — | Installer | — |
| Spielman, Darin | Lennox, SD | — | Installer | — |
| Spielman, Joshua | Tea, SD | — | Installer | — |
| Stahl, Rochelle | Huron, SD | — | Installer | — |
| Stahl, Wade M | Bridgewater, SD | — | Installer | — |
| Stark, Ryan D | Vale, SD | — | Installer | — |
| Steele, Zachary | Sundance, SD | — | Installer | — |
| Steffen, Mason | Sioux Falls, SD | — | Installer | — |
| Stephens, Alexander | Spearfish, SD | — | Installer | — |
| Stoltenburg, Caleb | Tea, SD | — | Installer | — |
| Street, Jesse | Big Stone City, SD | — | Installer | — |
| Studer, Jeff | Rapid City, SD | — | Installer | — |
| Svenkeson, Paul | Hot Springs, SD | — | Installer | — |
| Swan, Andrew | Beresford, SD | — | Installer | — |
| Swane, Jerry | Black Hawk, SD | — | Installer | — |
| Swanson, James | Homer, SD | — | Installer | — |
A · B · C · D · E · F · G · H · I · J · K · L · M · N · O · P · R · S · T · U · V · W · Y · Z