Vaillant ecoTEC Plus 635 System Boiler

37kW ErP Condensing System Boiler

The Vaillant ecoTEC 637 is the biggest of the ecoTEC system boiler range from Vaillant with a central heating output of 37kW and a BTU output of 130,000 makes it a perfect choice for larger size properties with 4 or more bedrooms and 1 or 2 bathrooms.

Features & Benefits

• For use with Unvented Systems.
• Stainless steel heat exchanger
• Advanced modulation during low usage to ensure maximum efficiency
• New high efficiency pump to reduce energy consumption
• Stylish contemporary case design to ensure seamless fit with home decor
• ErP Compliant
• Lightweight and compact
• Natural Gas fueled
• Includes 2 stage frost thermostat
• Built in pump and expansion vessel
• Compatible with Unvented systems