Experts in Boiler Repair and Maintenence

National Boiler Service has more than 300 years of combined experience and a professional and capable workforce of more than 10,000 to complete jobs safely, on time and with top-notch quality.  Licensed to operate in 39 states, we execute more than 100 outages each year,  providing installation, fabrication, and repair services vital to maintaining the life of your boiler system.

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Emergency Services

NBS is committed to reducing costs and safety incidents associated with sudden outages. We provide 24/7 emergency repair capabilities with NBS home office personnel coordinating all appropriate manpower and tooling to ensure maximum safety and minimal downtime.



We also provide chimney services at same level of safety, quality, and production you've come to expect from National Boiler.

Our specifically focused National Chimney & Stack division can meet any chimney needs you have.