The United States has an infrastructure problem. We have crumbling roads and railways, neglected public transit, and ports and airports in dire need of upgrades, not to mention the critical repairs needed for water and wastewater systems. 

When specifying and designing a high-efficiency boiler system, much attention is often given to the published efficiency ratings of units. 

Most of the pellet boilers being installed in North America are retrofit into existing hydronic heating systems that have one or more fossil-fuel boilers.