At Reimers all work follows ASME, National Board, UL cUL guidelines and is inspected, documented, and labeled. Reimers is an ASME stamp holder. Many decades of experience allow Reimers to offer voltages to 600, KW inputs of to 750 or 900, carbon and stainless options, BacNet, SCR, and SCCR upgrades. Some are standard on many electric hot water or steam models.