Quick answer: Choose the ecoFIT pure for a great-value Vaillant in any type of system, the ecoTEC pro for a no-fuss combi with faster hot water, and the ecoTEC plus if you want the widest choice of types and sizes. All three come with a 10 year guarantee when we fit them.
Vaillant boilers are hand-built in Derbyshire and are known for quiet, reliable running. Here is how the ecoFIT pure, ecoTEC pro and ecoTEC plus compare.
At a glance
| ecoFIT pure | ecoTEC pro | ecoTEC plus | |
|---|---|---|---|
| Range | Entry level | Mid-range | Premium |
| Boiler types | Combi, system or heat only | Combi | Combi, system or heat only |
| Guarantee when we fit it | 10 years | 10 years | 10 years |
| Best for | Smaller homes and tighter budgets | Homes with one bathroom that want hot water fast | Most homes, including larger ones |
| Stand-out feature | Compact enough for a kitchen cupboard, with top or rear flue options | aquaCOMFORT for faster hot water | The widest choice of types and sizes, with a clear full text display |



Vaillant ecoFIT pure
The ecoFIT pure is Vaillant’s great-value range. It is compact enough to fit in a kitchen cupboard and has top or rear flue options for a neat fit. Unusually for an entry-level boiler, it comes as a combi, system or heat only boiler.
Vaillant ecoTEC pro
The ecoTEC pro is a no-fuss combi built to the same quality as the ecoTEC plus. Its aquaCOMFORT feature gets hot water to your taps faster. It only comes as a combi, so it suits homes with one main bathroom.
Vaillant ecoTEC plus
The ecoTEC plus is Vaillant’s core range. It has the widest choice of boiler types and sizes, so we can match it to most homes, and a clear full text display that makes it easy to use.
Which Vaillant boiler should you choose?
- Pick the ecoFIT pure if you want a Vaillant at a lower price, whatever type of system you have.
- Pick the ecoTEC pro if you want a straightforward combi with faster hot water for a one bathroom home.
- Pick the ecoTEC plus if you have a bigger home or want the most choice of sizes and the easiest controls.
Not sure whether you need a combi, system or heat only boiler? Read our guide to combi vs system vs heat only boilers.
Frequently asked questions
What is the difference between the Vaillant ecoTEC pro and ecoTEC plus?
The ecoTEC pro is a combi only, with aquaCOMFORT for faster hot water. The ecoTEC plus comes as a combi, system or heat only boiler in a wider choice of sizes, with a full text display.
Is the Vaillant ecoFIT pure a good boiler?
Yes. It is Vaillant’s great-value range, but it is still built by Vaillant and comes with a 10 year guarantee when we fit it.
How long is the guarantee on a Vaillant boiler?
All three Vaillant ranges come with a 10 year guarantee when we fit them, as long as the boiler is serviced every year.
Where are Vaillant boilers made?
Vaillant boilers sold in the UK are hand-built in Belper, Derbyshire.
Get the right boiler for your home
Tell us a little about your home and we will recommend the right type, size and model, then give you a clear quote. See our Vaillant boilers. Browse all the boilers we install or get a boiler quote.



