My go to manufacturer for some time now has been Viessmann. Founded in Germany over 100 years ago they have quietly been taking the UK boiler industry by storm. Their product offering is technologically advanced and amongst the most efficient without being over complicated for the end user.

The UK’s gas boiler market is the third largest in the world. Although tens of thousands of jobs are supported, mine included, far too many boilers aren’t lasting as long as they should. Alongside the massive environmental cost this isn’t much to be proud of. A lot of the blame lies with manufacturers churning out poor quality products, a lot is down to poorly educated installers making a quick buck slinging in boilers.

The Viessmann way is a little different. A lot of the competition – Worcester Bosch, Ideal and to a certain extent Glow worm and Vaillant manufacturer boilers with aluminium heat exchangers. Viessmann, alongside most of the Baxi range use stainless steel. Stainless steel due to its corrosion resistance is the best heat exchanger material in a condensing boiler.

Viessmann boilers in the past have contained rubber hoses which have been known to occasionally burst. These have now been replaced with copper pipes in new models.

When wanting to maximise efficiency on boilers with a separate hot water cylinder the boiler needs to run at different temperatures when heating hot water or heating – also known as priority hot water, or PDHW. Your boiler needs to run at a high temperature for heating the hot water cylinder but does not for heating the radiators. If the boiler can run at lower temperatures this is the difference between 90%+ efficiencies and around 80%.

The best way to do this is with weather compensating controls which thankfully Viessmann excel at across their entire range. Although technologically advanced, once correctly set up it is no different to a programable thermostat.

Baxi and Worcester’s heat only boilers are not compatible with any kind of modulating control so whilst advertising 92%+ efficiencies they are sadly often in the low 80s.

If you are in Camberley and would like a quote for a Viessmann boiler, please call 01344 508076 or 07739 447798.