Plains Mechanical Services, along with its divisions, Plains Boiler Service, Writcorp and Industrial Insulators, is a locally-owned, full-service boiler room solutions provider that helps businesses run better every day. Since 1994, we have been specializing in full-service boiler, burner and boiler room installation, maintenance and repair for all aspects of steam and hydronic systems, fuel and process piping installations. Headquartered in Sioux City, IA, we are the area’s only locally-owned, full-service and one-stop-shop for boiler room equipment sales, service and rentals. We serve businesses in Iowa, South Dakota, Nebraska and Minnesota.


We offer a wide range of services and maintain a full-time service staff to provide complete solutions for your boiler equipment needs. Our skilled technicians can install, repair and maintain any boiler, water heating, and controls in a safe and professional manner.
We distribute and represent some of the finest quality brand name products available for boiler rooms today.
Even the best boiler systems experience downtime. Fortunately, we actively buy, stock and sell used boiler equipment to immediately meet your temporary steam needs, and provide 24/7 on-call service.
Plains has helped me on numerous occasions to provide sensible and cost-effective solutions to our needs. They consistently stay within budget and it feels like they always have our best interest in mind.
Terry H., Building and Grounds Chair : Holy Cross Parish

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