The Vaillant ecoTEC plus 637 37kW System Boiler is the largest of the ecoTEC range, ideal for larger properties with four or more bedrooms and one or two bathrooms. With a central heating output of 37kW and BTU output of 130,000, it provides powerful heating for your home.
The stainless steel heat exchanger and advanced modulation during low usage ensure maximum efficiency, while the new high-efficiency pump reduces energy consumption.
The stylish, contemporary case design seamlessly fits with your home decor. This natural gas-fueled boiler is lightweight, compact, and includes a 2-stage frost thermostat.
It also comes with a built-in pump and expansion vessel, and is compatible with unvented systems. The ecoTEC plus 637 is ErP compliant, ensuring its energy efficiency and eco-friendliness.