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