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VU 356/6-3 OV (H-GB) ecoFIT pure 435 Reviews | Vaillant Reviews

Name: VU 356/6-3 OV (H-GB) ecoFIT pure 435
Rating: 4.4 (106 reviews)

Displaying all 106 reviews

Trusted Customer

Feefo Verified

1 day ago

VU 186/6-3 OV (H-GB) ecoFIT pure 418

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No reason

How would you rate the quietness of your Vaillant boiler? : Good

How would you rate the comfort provided by your Vaillant boiler? : Good

How would you rate the way your Vaillant boiler looks? : Good

How would you rate the ease of use of your Vaillant boiler? : Good

Date of purchase: 13/08/2025

Tony Johnston

Feefo Verified

2 days ago

VU 186/6-3 OV (H-GB) ecoFIT pure 418

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relient and trouble free

How would you rate the quietness of your Vaillant boiler? : Exceptional

How would you rate the comfort provided by your Vaillant boiler? : Exceptional

How would you rate the way your Vaillant boiler looks? : Exceptional

How would you rate the ease of use of your Vaillant boiler? : Exceptional

Date of purchase: 29/08/2025

Peter Wilson

Feefo Verified

GBR

5 days ago

VU 256/6-3 OV (H-GB) ecoFIT pure 425

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No problems with boiler

How would you rate the quietness of your Vaillant boiler? : Excellent

How would you rate the comfort provided by your Vaillant boiler? : Exceptional

How would you rate the way your Vaillant boiler looks? : Excellent

How would you rate the ease of use of your Vaillant boiler? : Excellent

Date of purchase: 24/07/2025

Mark Phoenix

Feefo Verified

GBR

6 days ago

VU 256/6-3 OV (H-GB) ecoFIT pure 425

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Sounds like an airplane taking off. When the central heating is running, the boiler makes a noticeable low-frequency humming / droning noise on heating. I’ve done a few quick checks and it’s...

How would you rate the quietness of your Vaillant boiler? : Poor

How would you rate the comfort provided by your Vaillant boiler? : Good

How would you rate the way your Vaillant boiler looks? : Excellent

How would you rate the ease of use of your Vaillant boiler? : Excellent

Vaillant UK

Vaillant

5 days ago

Thank you for your review, we’re sorry to hear about the noise, our technical team will be happy to check this and advise you further on 0344 736 0049. The team can advise if a Vaillant engineer or your installer should return. All of our contact details can be found here: https://www.vaillant.co.uk/contact/contact/ We apologise for any inconvenience caused. Kind regards, Vaillant

Date of purchase: 16/08/2025

Trusted Customer

Feefo Verified

7 days ago

VU 256/6-3 OV (H-GB) ecoFIT pure 425

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Since the installation of this boiler, it hasn't performed as was expected. It keeps stopping on F83 and has to be reset 3 or 4 times during the day and often during the eveninmg.

How would you rate the quietness of your Vaillant boiler? : Excellent

How would you rate the comfort provided by your Vaillant boiler? : Good

How would you rate the way your Vaillant boiler looks? : Excellent

How would you rate the ease of use of your Vaillant boiler? : Good

Vaillant UK

Vaillant

3 days ago

Thank you for your review, we're sorry to hear that the boiler performance hasn't been as expected. After reviewing your account, the engineer that attended in March has noted that there is a system related issue which would need your original installer to resolve. If you would like further information on the engineers findings and report, please call us on 0330 100 3143. Should you need to contact us in the future, all our contact details can be found here: https://www.vaillant.co.uk/contact/contact/ Kind regards, Vaillant

Date of purchase: 15/08/2025

Trusted Customer

Feefo Verified

8 days ago

VU 156/6-3 OV (H-GB) ecoFIT pure 415

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Ease of use of control panel, quiet and efficient.

How would you rate the quietness of your Vaillant boiler? : Exceptional

How would you rate the comfort provided by your Vaillant boiler? : Exceptional

How would you rate the way your Vaillant boiler looks? : Exceptional

How would you rate the ease of use of your Vaillant boiler? : Exceptional

Vaillant UK

Vaillant

3 days ago

Thank you for your review and for taking the time to provide us with your feedback. Should you need to contact us in the future, all our contact details can be found here: https://www.vaillant.co.uk/contact/contact/ Kind regards, Vaillant

Date of purchase: 12/08/2025

Trusted Customer

Feefo Verified

8 days ago

VU 186/6-3 OV (H-GB) ecoFIT pure 418

View product website

Very efficient and money saving. Quiet in operation and 7 year warranty.

How would you rate the quietness of your Vaillant boiler? : Exceptional

How would you rate the comfort provided by your Vaillant boiler? : Exceptional

How would you rate the way your Vaillant boiler looks? : Exceptional

How would you rate the ease of use of your Vaillant boiler? : Exceptional

Vaillant UK

Vaillant

4 days ago

Thank you for your review and for taking the time to provide us with your feedback. We're pleased to hear your boiler is saving you money. Should you need to contact us in the future, all our contact details can be found here: https://www.vaillant.co.uk/contact/contact/ Kind regards, Vaillant

Date of purchase: 06/08/2025

Trusted Customer

Feefo Verified

11 days ago

VU 186/6-3 OV (H-GB) ecoFIT pure 418