Commercial & Industrial Boiler Services

A sudden drop in pressure or a lock-out on a central heating brings immediate risk to facilities, hospitals, agricultural processing plants and municipal operations. Precision Mechanical Solutions, Inc. (PMSI) delivers specialized, heavy-duty boiler expertise out of Fresno, keeping complex hydronic loops running safely, efficiently and in full regulatory compliance.

Our union-certified technicians bring deep technical expertise across all major commercial boiler manufacturers, handling everything from low-pressure steam boilers to modern condensing units.

24/7 Rapid Emergency Response

When safety limit switches trip or a pressure vessel begins leaking, waiting until normal business hours isn’t an option. PMSI maintains a live on-call technicians for immediate emergency dispatch. When our team arrives on-site, we follow a systematic diagnostic process to resolve critical failures fast:

Complete Hydronic Systems & Plant Equipment

Commercial hydronic loops require precise pressure control, continuous water treatment awareness and specialized mechanical service. PMSI engineers and maintains every component of your central plant, providing specialized care across three distinct equipment categories:

Low Pressure Steam Boilers (Cast Iron & Water-Tube Units) We perform thorough tube cleanings, refractory repairs, hydrostatic pressure testing and heavy mechanical overhauls designed for agricultural processing, industrial washing, and heavy manufacturing environments.

Hot Water Systems (Fire-Tube & Modular Condensing Boilers) Our team handles high-turndown retrofits, precise low-NOx combustion tuning, annual vessel overhauls and seasonal burner commissioning to maximize system efficiency.

Hydronic Loop Hardware (Pumps, Headers & Controls) Beyond the boiler vessel itself, we deliver direct replacement and balancing for primary and secondary circulating pumps, expansion tanks, air separators and motorized control valves.

Long-Term Asset Protection vs. Modernization

Managing a commercial heating plant requires deciding between maintaining existing infrastructure or upgrading to modern technology. PMSI provides clear technical guidance for both paths:

1. Proactive Care Via Planned Maintenance

Extending system longevity requires more than periodic visual inspections. Our Planned Maintenance agreements deliver scheduled tune-ups, filter and belt replacements, safety checks and combustion logging. Most importantly, our guaranteedprograms include full repair coverage—including all labor, travel and expenses to repair or replace maintainable components and major parts that fail from standard operational wear.

2. Turnkey Plant Replacement & Retrofits

When legacy equipment becomes obsolete or fails to meet current California emissions standards, we execute complete system replacements. PMSI manages rigging, gas manifold sizing, piping, and full integration with your building automation system (EMS). We offer free estimates on all equipment replacements. New unit installations are backed by our 90-day parts and labor warranty and a 1-year conditional labor warranty, in addition to any manufacturer warranty.

Regional Industrial Coverage

Equipment failures and unexpected downtime can derail your entire facility operation. Headquartered in Fresno, PMSI delivers rapid dispatch, union-certified craftsmanship and complete hydronic expertise to commercial and industrial facilities across Fresno, Tulare, Madera, Kern, Kings and Merced counties.

Whether you need immediate 24/7 emergency repair, a comprehensive Planned Maintenance agreement or a free estimate on a complete boiler replacement, our team is ready to serve your business. Contact PMSI today to speak directly with our commercial specialists and keep your critical systems operating safely and efficiently.