The Nesta boilers are centred around a Fire Tube heat exchanger, engineered from specially selected stainless steel alloys. This construction imparts durability, reliability, and enhanced resistance to corrosion and oxidation, ensuring long-lasting performance and serviceability.

The Fire Tube exchanger is self-cleaning thanks to the condensates that run from the top to the bottom of the vertical flue pipes, designed in such a way to keep the internal surface of the pipes clean, guaranteeing constant high performance over time and considerably limiting maintenance interventions.

With a compact footprint every gas condensing boiler is designed to pass through a 70–90 cm wide doorway, enabling quick and unobtrusive installation. As a result, our boilers delivers long-lasting efficiency, practicality, and cost-effectiveness, making it the perfect solution for space-conscious projects with demanding heating requirements.