Vaillant is Germany's most prestigious boiler brand — and they charge accordingly. The ecoTEC range sits at the top of most plumbers' recommended lists, but is it worth paying £200–£400 more than a mid-range alternative?
Engineering quality
Vaillant's build quality is exceptional. The stainless steel heat exchanger in the ecoTEC Plus and Exclusive models is thicker and better-finished than most competitors. Our engineers who service Vaillant boilers regularly report far fewer component failures compared to budget brands.
Efficiency in practice
The ecoTEC Plus achieves 94% efficiency, the Exclusive 96%. For a home spending £1,500/year on gas, upgrading from an 80% efficient older boiler to the ecoTEC Plus saves around £210 per year — paying for the premium price difference in under 2 years.
The ecoFIT Pure: budget Vaillant
Vaillant also offer the ecoFIT Pure, which brings the brand's engineering heritage to a more accessible price point (from around £999 fitted). For homeowners who want Vaillant quality without the premium, this is an excellent choice.
Our verdict
The ecoTEC Plus is genuinely worth the premium for homeowners planning to stay in their property 10+ years. The efficiency savings and reduced repair costs over a 15-year lifespan comfortably outweigh the higher upfront cost.
Our rating: 9/10