Service • Parts • Rentals • Products

YOUR TRUSTED BOILER SERVICE COMPANY

Skilled Experts in Commercial and Industrial Hydronic Boiler Repair & Maintenance

GET TO KNOW US

From emergency boiler repair available 24/7 to full-service parts, rentals, boiler equipment sales, and maintenance programs, Union Boiler Company Ltd. delivers solutions designed to keep your boilers running reliably around the clock.

WE SERVICE ALL BRANDS INCLUDING:

WE SERVICE ALL BRANDS INCLUDING: (ORIGINAL TO BE DELETED)

 
  • Hot Water Boilers

  • Firetube Boilers

  • Steam Boilers

  • Watertube Boilers

  • Thermal Fluid Process Systems

  • Electrical Boilers

24/7 Emergency Boiler Repair and Maintenance Services

Trusted Response, Any Time, Any Place

You can rely on Union Boiler Company Ltd. to reduce downtime and restore boiler performance fast.

  • emergency_home 24/7 service, 365 days a year
  • delivery_truck_bolt Rapid response
  • local_shipping Fully Stocked trucks
  • engineering Highly Trained Technicians

Your Complete Source for Boiler Solutions

Expertise in Service, Parts, Rentals & Equipment

Union Boiler Company Ltd. is your strategic partner, providing reliable service for all your commercial, industrial, and multi-residential boiler repair needs.

Our team works alongside yours to boost operational efficiency, minimize downtime, and support your boilers across every stage of their lifecycle.

We’re the boiler repair and maintenance pros, so you don’t have to be.

Servicing All Boiler Models, Types, and Makes

If it’s in the Boiler Room, We’ve Fixed It

Our certified technicians have successfully handled:

360° Boiler Lifecycle Solutions

  • 24/7 Boiler Service

    We deliver expert assistance 24/7, 365 days a year. Our highly skilled technicians will keep your boiler system running at peak performance and help prevent downtime.

    Boiler Down? Call Us 905-528-7977

  • Boiler Parts

    Avoid delays with a complete inventory of high-quality boiler parts and fast-response installation. Our trucks come fully stocked for efficient, on-site service whenever you need it.

    Request a Quote

  • Boiler Products

    Customized boiler solutions built for intrinsic safety, compact design, energy efficiency, and fast steam output. We’re proud to be a premier Fulton representative.

    Browse Products

  • Boiler Rentals

    From selecting your rental unit to installation and service, our team ensures seamless continuity during failures or planned shutdowns.

    Explore Rentals

MAINTENANCE PLANS

Extend Your Boiler’s Life With Custom Maintenance

Save Time, Energy & Budget With Preventative Boiler Maintenance

We’re not only known for fast emergency boiler repairs; we’re also your long-term partner in boiler maintenance. Union Boiler Company Ltd. provides valuable insights and planning strategies tailored to your boiler maintenance plan. We’ll create monthly, quarterly, or annual maintenance schedules based on your system’s specific demands.

Finding the Right Boiler Part Has Never Been Easier

Top Brands and OEM Parts in Stock

Access to the right parts fast helps you avoid downtime. Whether you need an emergency part or scheduled replacement, our specialists ensure proper selection and installation.

• Fully stocked trucks

• Valves

• Pumps

• Controls

• Gaskets

• and more

Emergency or Planned Rental Boilers to Keep you Up and Running

Tailored Rental Options to Meet Your Unique Needs

Whether you’re facing a boiler failure or a planned shutdown, we offer end-to-end support, from rental boiler selection to installation and servicing. Your uptime is our top priority.

Need steam fast? We’ll get you back online quickly with rental units from 150 to 500 HP.

Equipment Built for Commercial & Industrial Heating Needs

Steam, Hot Water, and Thermal Fluid Systems

Union Boiler helps you source the right equipment with expert guidance tailored to your facility’s needs. As part of the Thermogenics group of companies, we supply Thermogenics boiler equipment, including coil-tube steam and hot water boilers ranging from 75–600 BHP, with pressures up to 2,800 psig.

INDUSTRIES WE SERVE

Institutional & Government

Dry Cleaning

Pharmaceutical

Clean Steam Humidification

Textiles

Brewing & Distillation

Chemical Processing

Asphalt & Liquid Terminal

Oil & Gas

Frequently Asked Questions

The cost of boiler service varies based on the type, size, and condition of the boiler. It also depends what type of service is required. Contact us for a quote.

How often a boiler system should be serviced varies and you should always refer to the boiler Operation & Installation Manual (OIM).  Semi-Annual Safety and combustion checks and Annual Maintenance & PM are best practice.

There are many steps completed on a boiler service. Standard preventative maintenance for most packaged steam boilers includes, open & close of the fire and watersides for inspection, replace gaskets and gauge glasses, replace ignition election, service wear items such as belts, packing and inspect or replace valve seats and gaskets.

Boiler services are worth it without a doubt. It is important to ensure your boiler is running optimally. Regular Preventative Maintenance helps and improve efficiency, which saves costs. Boiler services usually provide 3 major benefits.

  1. Ensure safe operation
  2. Ensure efficient operation. Combustion tuning alone can yield 1-3% fuels savings
  3. Prevent costly downtime from an unplanned outage.
We are always looking for Experienced Service Technicians: Join Our Talent Network
+ +