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Worcester vs Vaillant Boilers: What’s the difference

As 2 of the biggest heavyweights in the UK boiler industry, Worcester and Vaillant are rightly considered as being right up there as the producers of the best and most reliable boilers.

Both manufacturers have established a reputation for delivering energy efficient appliances that can provide high-end heating and hot water performances. But how do the ranges differ? This article pits Worcester vs Vaillant and looks at the boilers available from both brands.


Overview:

Worcester boiler vs Vaillant boilerWorcester’s flagship boilers make up their Greenstar series. Within this series there are a number of sub-ranges which contain different types of boilers (e.g. Combi boilers, heat only boilers, system boilers) with varying heating and flow rate output specifications:

Worcester Combi Boilers:

  • Worcester Greenstar i Combi boiler models
  • Worcester Greenstar Si Combi boiler models
  • Worcester Greenstar CDi Compact Combi boiler models
  • Worcester Greenstar Classic Combi boiler models

Worcester Heat Only (Regular) Boilers:

  • Worcester Greenstar RI Heat Only boiler models

Worcester System Boilers:

  • Worcester Greenstar I System boiler models
  • Worcester Greenstar CDi System boiler models

 

vaillant-vs-worcester-v2Vaillant’s flagship boiler range is the EcoTec series and in a very similar way to Worcester, the series is made up of a number of series, each contain different types of boilers with varying heating and flow rate output specifications:

Vaillant Combi Boilers:

  • Vaillant EcoTec Pro Combi boiler models
  • Vaillant EcoTec Plus Combi boiler models
  • Vaillant EcoTec Exclusive Combi boiler models

Vaillant Heat Only (Regular) Boilers:

  • Vaillant EcoTec Plus Regular boiler models

Vaillant System Boilers:

  • Vaillant EcoTec Plus System boiler models

 


How do the different ranges compare:

The table below outlines the different boilers models in the Worcester Greenstar series against the closest variant in the Vaillant EcoTec series*.

Note: the Worcester Bosch series contains more boiler models than the Vaillant boiler series, so it may be the case that there is more than one Vaillant boiler that closely matches the specification.

COMBI BOILERS

The table below lists each Worcester Greenstar combi boiler model and suggests the closest matches in the Vaillant EcoTec combi boiler series in terms of hot water flowrate and central heating output*.

One of the main differences to note between the Worcester Greenstar and Vaillant EcoTec range is the warranty periods available on some of the entry level boiler models that are suitable for flats, apartments and smaller houses. The Vaillant EcoTec Pro range come with a 2 year manufacturer warranty as standard but Worcester are currently offering a 5 year manufacturer warranty across the entirety of the Greenstar range(**), so if warranty is important to you it may be worth looking at the Worcester combi boilers.


Worcester Boilers
(click link above to view all boilers)

Vaillant Boilers
(click link above to view all boilers)
Suitable for:

25i Combi

Pro 24 / Plus 825

Smaller flats, apartments and houses

30i Combi

Pro 28 / Pro 30 / Plus 825

Small to medium sized properties

25Si Combi

Pro 24/ Plus 825

Smaller flats, apartmements and houses

30Si Combi

Pro 28 / Pro 30 / Plus 825

Small to medium sized properties

28CDi Compact

Pro 28 / Plus 825

Small properties

32CDi Compact

Pro 30 / Plus 832

Medium sized properties

36CDi Compact

Plus 835

Medium to large sized properties

29CDi Classic

Plus 832

Medium to large sized properties

34CDi Classic

Plus 835

Medium to large sized properties

38CDi Classic

Exclusive 838 / Plus 938 /

Larger properties

42CDi Classic Plus 938 / Exclusive 838

Larger properties

 

SYSTEM BOILERS

The table below lists each Worcester Greenstar system boiler model and suggests the closest matches in the Vaillant EcoTec system boiler series in terms of central heating output*.worcester-vs-vaillant-system

Worcester Boilers
(click link above to view all boilers)

Vaillant Boilers
(click link above to view all boilers)

12i Compact

Plus 612

15i Compact

Plus 615

18i Compact

Plus 618

24i Compact

Plus 624

27i Compact

Plus 624

30i Compact

Plus 630

30cdi

Plus 630

35cdi

Plus 637

 

REGULAR "HEAT ONLY" BOILERS

The table below lists each Worcester Greenstar regular boiler model and suggests the closest matches in the Vaillant EcoTec regular boiler series in terms of central heating output*.Worcester regular boiler vs Vaillant regular boiler


Worcester Boilers

(click link above to view all boilers)

Vaillant Boilers
(click link above to view all boilers)

12Ri

N/A

15Ri

Plus 415

18Ri

Plus 418

24Ri

N/A

27Ri

Plus 428

30Ri

Plus 428

30CDi Classic

Plus 428

40CDi Classic

Plus 438

30CDi Floor Standing

Plus 428

42CDi Floor Standing

Plus 438

*Please consult a qualified heating engineer before you purchase your boiler to ensure that the model you are buying is suitable for your property.

**The 5 year warranty promotion is provided by the manufacturer and at the time of writing is available until 31 December 2015. Please consult the manufacturer websites for full terms and conditions: Worcester T&Cs | Vaillant T&Cs