I have to replace a boiler soon, actually 2 or 3 at holiday flats, and have been looking at the Vaillant info but can't really see the difference between the Plus and the Pro other than price. There must be something different technically but the brochures seem to say all the same words. The performance data is all the same and the words don't seem to go far apart.
Can anyone advise?
Can anyone advise?
