A model type to suit most specifications
The ecoFIT sustain range of combi, system and open vent boilers offers an excellent size-to-output ratio, giving great comfort whilst ensuring a small footprint. The range features 15, 18, 25, 30 and 35kW models to suit all types of properties. The sustain range boasts an ErP A rating, highlighting its energy efficiency. Designed with the specification market in mind, these boilers provide reliable performance and peace of mind, making them an ideal choice for those seeking top-notch heating solutions.
Precision-engineered boiler to meet specification demands
The ecoFIT sustain has a range of flue options, offering flexibility to suit various installation needs. Choice of rear or top flue up to 10 metres, allowing maximum flexibility for the location of the boiler.The boiler is also compact in size with flexibility of siting, including the option for cupboard fit. With a high SAP performance, it helps to reduce new build cost by up to 4% on TER. Highly efficient and economical to run up to an 89.3% efficiency rating (SAP 2009).High efficiency
The ecoFIT sustain boiler is engineered for efficiency, making it an ideal choice for the specification market. With a modulation range up to 1:4, it ensures low energy consumption and maximum efficiency, adapting seamlessly to your heating needs. The recognised Grundfos high-efficiency pump, with its modulating high-torque design, uses minimal energy to deliver a balanced output, aligning perfectly with the boiler demand and reducing overall energy consumption. Additionally, the fully modulating low NOx burner and fan contribute to improved energy efficiency, ensuring that your heating system operates optimally while being environmentally conscious. With these features, the ecoFIT sustain boiler stands out as a reliable, efficient solution for modern heating requirements.High SAP performance
Your clients can experience unparalleled efficiency with the ecoFIT sustain. The built-in-two-stage frost protection ensures optimal performance all year round and our warm start functionality provides your customers with superb hot water performance. 
