Designed for variable primary flow systems, Fulton’s ENDURA Plus firetube condensing boilers represent a revolution in firetube condensing boiler technology.

Whereas conventional boiler designs transfer stresses directly onto the most critical components, Fulton’s patent-pending stress reliever completely eliminates these stresses and significantly increases boiler longevity.

ENDURA+ provides industry-leading performance without sacrificing durability.

Key Features

• Thermal Stresses Virtually Eliminated
• Durable Stainless Steel Firetube Heat Exchanger
• Up to 15:1 Turndown; O2 Compensation
• Compact Footprint – Fits Through a Standard Doorway (Up to 6MM BTU/hr)
• Designed for Variable Primary Flow