Nesta Plus — High-output floor-standing condensing boiler for commercial and industrial applications

280–1260 kW

High-output efficiency
with seamless adaptability

The Nesta Plus range delivers high-efficiency floor-standing condensing boilers with outputs from 280 to 1260 kW. Engineered for demanding commercial and industrial projects, these boilers provide reliable heating in both new installations and renovation works. Despite their compact footprint, Nesta Plus units offer exceptional power, making them ideal for plantrooms with limited space. Built around AIC’s proven stainless steel Fire Tube heat exchanger, they combine long-term durability with excellent thermal efficiency, supported by self-cleaning flue ways that simplify maintenance.

Equipped with advanced control systems, Nesta Plus boilers manage cascades of up to six units, covering multiple direct or mixed circuits including DHW. Connectivity via Ethernet or GSM (with the WEB Server Module) enables full remote monitoring, while self-diagnostics streamline servicing and reduce downtime. With a robust design, compact size, and outstanding operational stability, the Nesta Plus is a powerful and sustainable solution for modern high-output heating requirements.

Reliable heating solutions
for large-scale facilities

Model

280–570 kW 700–1260 kW

Recommended for
Medium-size residential,
Commercial and Public
Large-Scale Commercial,
Public and Industrial

Large residential complexes,
Medium and large hotels,
Schools, universities, and training centers,
Office buildings and business parks,
Sports facilities, gyms, and wellness centers,
Clinics, care homes, and healthcare facilities

2000–5000 m²

Recommended for
Medium-size residential,
Commercial and Public
Large-Scale Commercial,
Public and Industrial

Hospitals and large healthcare facilities,
Large resorts and conference hotels,
Industrial facilities and production sites,
Large office complexes and commercial centers,
Public buildings,
Sports complexes and swimming pools,
Centralised heating plantrooms for residential districts

5000–15000+ m²

Fire Tube — High efficiency, <br>long life, low maintenance

Fire Tube — High efficiency,
long life, low maintenance

At the heart of the Nesta Plus lies the Fire Tube heat exchanger, manufactured entirely from stainless steel for maximum efficiency, durability, and resistance to corrosion. Its vertical design enables condensates to naturally clean the flue ways, ensuring consistently high performance with minimal maintenance.

The carefully engineered geometry of the flue gas tubes maximizes surface area and water capacity, guaranteeing high efficiency, stable temperatures, and optimal condensation. With completely immersed flue gas tubes and high heat transfer coefficients, Nesta Plus boilers deliver very high seasonal efficiency without risk of oxidation. Proven through years of global application, this technology ensures lasting reliability, peace of mind, and excellent returns on energy savings.

Thermal efficiency
up to 108%
Reduced maintenence
self-cleaning flue ways
NOx class
6
Operating pressure
up to 6 bar

Modulation ratio

Strong, lightweight
and easy to install

Nesta Plus stands out with its exceptionally high water content of up to 560 litres, which provides outstanding thermal stability, reduces pressure drops, and ensures balanced performance across both heating and flue gas circuits. This design minimises the risk of overheating and significantly reduces cycling, protecting the boiler and extending its service life.

Complementing this is an advanced 10:1 modulation ratio that continuously adapts boiler output to real-time demand. By matching power precisely to system requirements, Nesta Plus achieves higher seasonal efficiency, lower gas consumption, and improved comfort. Together, these features make Nesta Plus one of the most stable, efficient, and reliable floor-standing condensing boilers in its class.

High water content
up to 560 litres
Wide modulation ratio
up to 10:1

Very high corrosion resistant: 100%
stainless steel

Reduced maintenance: Self-cleaning
flue ways

Connectivity: Intelligent control
and remote access

End-to-End
In-House Production

With in-house production facilities in Poland, full assembly lines, and a modern CNC machine park, we offer full process control from tube forming to final testing. Our engineering is supported by advanced CFD and FEA simulations and verified in our on-site thermal laboratory. Every product undergoes rigorous quality control and complies with ASME, PED, and SELO standards. In-house manufacturing ensures performance consistency, thermal efficiency, and seamless integration with HVAC and industrial systems.