Laars Heating Systems

Laars engineers use the latest in fluid flow and heat transfer simulations as well as extensive lab testing when developing new products to ensure proper operation of your new heating system.

Manufacturing 'live fires' each and every heater that is manufacturer at the Rochester facility to conduct needed safety checks and functional tests. We record the boilers performance during this process to ensure quality is met. Not all manufactures do these extra functional tests for their customers.

We believe having advanced training available for those that install and service our products is very important. To support this we have recently built a new, state of the art training facility where our boilers can be live fired in a ‘hands-on’ learning environment. Visiting contractors and engineers train with Laars applications experts and our engineering teams. 

Laars products are widely used in space heating, radiant floor heating, volume water heating and industrial process markets covering a range of 50,000 to 5,000,000 BTU/hr. utilizing either natural gas, liquid propane, or electricity. Laars meets the needs of today's more demanding heating systems applications with over 20 different heating products, supporting accessories and controls. For your home, business or commercial heating needs Laars products are the quality choice.

We are truly Built to be the Best™


Proudly made in America

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  • Parts

Product Types:

  • Pumps
  • Temperature Sensors
  • Accessories
  • Aquastats
  • Burners
  • Filters & Filter Driers
  • Gaskets
  • Gauges
  • Heaters, Heat Exchangers, and Heating Elements
  • Ignitors & Ignition Accessories
  • Limit Switches
  • Miscellaneous Assemblies
  • Miscellaneous Boards
  • Miscellaneous Sensors
  • Miscellaneous Switches
  • Motors
  • Pilot Assemblies
  • Pressure Switches
  • Relays
  • Temperature Controls
  • Thermistors
  • Thermostats
  • Transformers
  • Valves


  • Parts