Mep Stock offers Vaillant ecoTEC Plus 637 (ErP) System Boiler The Vaillant ecoTEC Plus high efficiency system boiler range offers quality, reliability and superb performance along with great usability. Ease of installation, compact dimensions and one of the lowest weights in its class have made the ecoTEC Plus 637 system boiler a firm favourite with installers and end users alike.

Compact dimensions and light weight

Excellent siting versatility and easy installation

Advance modulation during periods of low heat demand for maximum efficiency

Flame lift detection system for more efficient and quieter combustion

New high efficiency pump for reduced energy consumption

7 year warranty if fitted by a Vaillant Advance installer