When you are looking for a Vaillant gas boiler then the best place to go is MDS in South London. A very large stockist of Vaillant boilers with staff that really know their products. Vaillant has just been selected for “Which” best buy making it an even better idea to purchase a Vaillant boiler. Whether you require a Combination boiler or just a heating only then there will be a Vaillant boiler to suit your requirements. Vaillant are now introducing a new range of boilers called Pure. These new appliances are market leading in small dimensions, cupboard fit and also offer a rear flue option for extra tight spaces. Contact us on 020 8778 2887 for prices or call into our South London trade counter. MDS supplies all leading makes of central heating and is a true one stop supplier to the trade and retail plumbing and heating markets.