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Ebmpapst Srl 21.05.2026

RadiFit from ebm-papst: The EC centrifugal fan for efficient HVAC retrofits

RadiFit from ebm-papst is the compact EC centrifugal fan for efficient retrofits, HVAC applications and industrial cooling.

Improving the performance of an HVAC system often requires targeted interventions that can impact consumption without disrupting the existing unit. Replacing the fan is one such solution: a targeted technical upgrade, but one that has tangible benefits for efficiency and air management.

This is the context for RadiFit from ebm-papst , a range of EC centrifugal fans developed for HVAC and industrial applications. Thanks to its compact design, integrated electronics, and GreenTech EC technology, RadiFit offers high efficiency , flexible control, and easy integration, making it particularly suitable for retrofitting.

 

A compact fan for HVAC systems and centralized systems

RadiFit is designed for systems where the fan must ensure reliable airflow, compensate for pressure drops, and fit into often limited technical spaces. The scroll housing , double inlet, and backward-curved blade configuration combines performance, compactness, and ease of installation.

In air conditioning applications, fans convey air through heat exchangers, filters, humidifiers, dehumidifiers, and ducting systems. In these contexts, a robust, lightweight solution with adjustable speed offers a tangible advantage both in the design phase and in system management.

The performance of the RadiFit centrifugal fan. The curves show the relationship between air flow and available pressure for the different diameters in the range, helping designers and technicians choose the configuration best suited to the system's needs.

 

Flow rate, pressure and application areas of the RadiFit range

The RadiFit range's performance curves highlight the ability to cover various operating ranges, adapting to different flow and pressure requirements. This is particularly useful when selecting a fan based on the unit's characteristics or when modifying existing systems without modifying the entire structure.

RadiFit is used in various contexts, from air conditioning to industrial applications, offering an effective solution wherever efficient, reliable and easily controllable air movement is required.

Air conditioner with RadiFit Ø 250 mm

Air conditioning

Air conditioner with RadiFit Ø 250 mm

In air conditioners, the fan directs air through the heat exchanger and then into the inlet and outlet ducts. In this type of application, in addition to compactness, energy efficiency and the ability to adjust ventilation based on the unit's actual needs also become important.

Central air conditioning with RadiFit Ø 400 mm

Centralized systems

Central air conditioning with RadiFit Ø 400 mm

In centralized air conditioning systems, air passes through various components, such as filters, heat exchangers, humidifiers, dehumidifiers, and duct networks. In these configurations, the fan must ensure a constant flow rate and compensate for even significant pressure losses.

The range can also be used in industrial settings, such as generator cooling, where the fan conveys ambient air to the generator through dedicated ducts. In this case, the integrated speed control allows cooling to be adjusted to the actual thermal load, reducing energy waste and optimizing system operation.

 

Retrofit: Replacing obsolete fans with EC technology

One of the most interesting areas for RadiFit is retrofitting. Replacing obsolete or traditional technology fans with a modern EC solution improves system efficiency without having to completely redesign the unit.

GreenTech EC technology allows for integrated speed regulation, which helps adapt fan operation to actual load conditions. This reduces energy consumption, optimizes ventilation, and improves airflow control in various operating scenarios.

RadiFit is supplied as a complete unit, with integrated engine, aerodynamics and electronics: an aspect that helps simplify installation and replacement, reducing the complexity of the intervention and containing time and costs.

 

Efficiency and integration for more advanced ventilation

RadiFit from ebm-papst fits into the philosophy of more efficient and controllable ventilation, where performance, regulation, and ease of integration must coexist. For those designing, building, or upgrading ventilation and air conditioning units, it represents a concrete solution for improving air movement, reducing operating costs, and providing targeted interventions even on existing systems.

The possibility of using it in air conditioning, centralized systems and industrial applications , combined with the advantages offered in retrofit projects, makes RadiFit an interesting choice to meet the current needs of the HVAC market: reducing consumption, simplifying technical interventions and increasing the overall efficiency of the unit.

FAQ

RadiFit è indicato per unità di climatizzazione, sistemi centralizzati di trattamento aria e applicazioni industriali in cui è necessario movimentare aria attraverso scambiatori, filtri, batterie, umidificatori, deumidificatori e canalizzazioni. La configurazione centrifuga con scroll housing, doppia aspirazione e pale rovesce consente di gestire portate d’aria e perdite di pressione in spazi tecnici contenuti, risultando adatta sia a nuove unità sia a interventi di aggiornamento su macchine esistenti.

La sostituzione è indicata quando il ventilatore esistente presenta consumi elevati, limitata regolazione della velocità o difficoltà nel mantenere la portata richiesta al variare delle condizioni operative. In un retrofit HVAC, l’adozione di un ventilatore EC come RadiFit permette di migliorare l’efficienza senza riprogettare l’intera unità, intervenendo su un componente critico per consumi, controllo dell’aria e continuità di funzionamento.

La tecnologia GreenTech EC integra motore, elettronica e controllo della velocità, permettendo al ventilatore di adattare il funzionamento alla reale richiesta dell’impianto. Questo consente di ridurre gli sprechi energetici rispetto a soluzioni a velocità fissa, ottimizzare la ventilazione in presenza di carichi variabili e migliorare la gestione di portata e pressione nelle diverse condizioni operative.

Rispetto a un ventilatore centrifugo tradizionale, RadiFit integra tecnologia EC, elettronica di controllo e aerodinamica in un’unità completa e compatta. Questo semplifica la selezione e l’installazione, riduce la necessità di componenti esterni per la regolazione e permette una gestione più precisa della velocità. La soluzione è particolarmente utile dove si richiedono efficienza energetica, controllo flessibile e adattabilità a spazi macchina già definiti.

In un intervento di retrofit è necessario verificare compatibilità dimensionale, campo di portata e pressione richiesto, perdite di carico dell’unità, alimentazione elettrica e modalità di regolazione previste dal sistema di controllo. Le curve prestazionali della gamma RadiFit aiutano progettisti e tecnici a selezionare il diametro più adatto in funzione del punto di lavoro dell’impianto, evitando sovra o sottodimensionamenti.

RadiFit può contribuire a ridurre consumi elettrici, difficoltà di regolazione della ventilazione, inefficienze legate a ventilatori obsoleti e scarsa adattabilità ai carichi variabili. Nei sistemi centralizzati aiuta a compensare perdite di pressione dovute a filtri, batterie e reti di canali, mentre nelle applicazioni industriali può modulare il raffreddamento in funzione del carico termico reale, migliorando efficienza e affidabilità operativa.

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RadiFit from ebm-papst: The EC centrifugal fan for efficient HVAC retrofits
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