Specs and Docs


High Efficiency Commercial Boiler and Volume Water Heater

The Pennant line of fan-assisted, modular boilers and water heaters ranks among the industry’s most versatile and environmentally friendly commercial systems for hydronic and hot water applications. Available in 7 sizes from 500 to 2000 MBTU/h, Pennant boilers and water heaters run reliably on natural or LP gas and deliver efficiency levels up to 85%. Pennant systems are also among the “greenest” in the industry with NOx emissions
below 10 ppm.

Pennant boilers and water heaters feature convenient, modular construction that separates the burner trays, gas train, and blower assembly. 

Built-In Versatility

  • Advanced Laars Multi-Mode Control System
  • 85% Thermal Efficiency
  • 500 to 2,000 MBH
  • Stage Firing: Up to 4:1
  • Industry Leading Low NOx, 10 ppm
  • Vent from Top or Back
  • Indoor/Outdoor Construction