Vaillant EcoTEC Plus 831 Reviews

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Vaillant EcoTEC Plus 831
Vaillant EcoTEC Plus 831
Vaillant EcoTEC Plus 831
Vaillant EcoTEC Plus 831

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Latest Reviews

★★☆☆☆

“unreliable and expensive”

Written on: 25/11/2014 by Bernard448 (1 review written)

I bought the 831 in February 2013 and it ran well for the first year. In March 2014 it would not come on so the man who installed it came round and fiddled with the controls and got it going. He could not say what the problem was. In Sept 2014 it got too hot to touch the radiators despite the thermostat not calling for heat, but this problem put itself right the next day. On November 12th it failed to come on at all, the engineer called and fiddled around again. He got it going but was not able… Read Full Review

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★★★☆☆

“mix bag ”

Written on: 12/11/2014 by TaniyahRose100 (1 review written)

I have 3 valiant boilers 2 in my rented properties and one in my home. The rented properties boilers seems to be working fine for at least year since installation. Howevever the boiler in house seems to give me endless problem with water pressure. Sometimes it is high sometime low .At least the valiant engineers seem to come and sort out the problem as it is under guarantee. Overall I do not think Valiant are any better than other cheaper brands. I have glowwarm and this seems to reliable. I… Read Full Review

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★☆☆☆☆

“Nothing but problems”

Written on: 09/11/2014 by trebor566 (1 review written)

Had our boiler installed 3 years ago, within a few weeks the thermostate became faulty and wouldnt work so called out the installer who replaced it but said he's never had to replace one before as they never go wrong. 18 months later the timer started to lose time and wouldnt turn on heating at set times, this was a intermittiant fault so not constant and wpould work ok for months then suddenly paly up, but now its stopped working all together, have tried calling vaillant but they said parts… Read Full Review

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★☆☆☆☆

“Valliant guarantee worthless”

Written on: 12/10/2014 by Burnie123 (1 review written)

Bought a valiant ecotec plus 831 just under two years ago this boiler has had an intermitent problem since new faulty water pressure switch once every two days the boiler will switch of with the message f22 low water when you speak to valiant they say boiler needs topped up useless just switch the power supply of then back on hey presto it ignites no top up required because the boiler wasn't serviced at year one they won't touch it beware read the small print avoid this manufacturer… Read Full Review

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★☆☆☆☆

“Broken after 6 days”

Written on: 11/10/2014 by Janiya39 (1 review written)

Had it 6 days and got an error code 32 (flueing or fan apparently) and a whole heap of sludge over the worksurface. Had everything powerflushed and new pipes so, I await the solution to the issue. Not pleased after shifting a 40 year old gravity system that worked for this in order to sell my house more easily… Read Full Review

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★☆☆☆☆

“Very bad boiler”

Written on: 19/05/2014 by 467McCall (1 review written)

This is a very bad boiler. It does not give warm water when you have a watersaving tap. Water has to flow very powerfully to get warm. This boiler wastes alot of water… Read Full Review

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★★★☆☆

“poor design on cold water shut off valve”

Written on: 27/02/2014 by 160Pope (1 review written)

The cold water shut off valve which doubles up as a system filling device is a ballofix valve and constantly leaks after filling the boiler a couple of times.A very poor design. I had to replace the part within a short period of time… Read Full Review

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Stele_Hr's Comment

Written on: 13/03/2014

I had a same problem. Also was informed by the service guy that it happens quite often. Really shame that such a company (Vaillant) is not producing the valve that will work for more than a couple of fillings (considering its a simple type of valve normally functional for years in plumming...)

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★☆☆☆☆

“NOTHING BUT PRESSURE PROBLEMS”

Written on: 22/02/2014

Had this boiler installed in 2012 after being advised to get it. Only 2 winters have gone by and have had problems with pressure. It started with loss of pressure over 3-4 days then within 1 day and then every morning it would lose all pressure. Vaillant Engineer has said its a leak and my plumber who has been 3 times can't find any leaked has said I would have signs of leaking which I haven't. Piggy in the middle! Why would it shut off so quickly if there was a leak? This problem will. It go… Read Full Review

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★☆☆☆☆

“Once was an all-time great, but now...”

Written on: 10/12/2013 by percypepper (1 review written)

Having worked on Vaillant appliances for the past fifteen years, I would never have had a bad word said about them. They were engineered to such a high standard and were truly the Mercedes of boilers, built to last as was said. From around 2005, when the new condensing eco-tec range were being fitted, a few common faults were cropping up but this was half expected as this new range was a prototype and these small problems were almost certain to be rectified/corrected in newer models to come… Read Full Review

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Boiledover's Response to percypepper's Review

Written on: 01/01/2014

Ive a valiant 831 r1 ecotec plus and keep losing pressure try topping up but pressure goes sky high but once its running it doesn't switch off puzzled to what the problem might be

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Desperadess's reply to Boiledover's Comment

Written on: 16/02/2014

I had a Vaillant ecotec 831 boiler installed in November by Southern Electric. Whenever we have a decent bout of a combination of wind and rain we have rain coming in through the flue. According to Southern electric, this is due to freakish weather and not within their remit. They also stated that the problem is with the design of the flue intake allowing for rain to come in. Mostly it now just drips in but in the big storm before xmas it was pouring in. Water was dripping from the boiler just two nights ago. The Vaillant engineer said that it was the incorrect angle of the flue fitting to the wall as it is at an angle and says that the condensing pipe should be upright when it comes out of the wall and then needs to change angles. Southern Electric have stated that it was fitted correctly. As a result we have water dripping from the flue inside the house down on to the top of the boiler casing in mild rain and wind and then water pouring in from the flue itself when in heavy wind and rain. Corrosion is already more than apparent both on the flue, the top of the boiler and inside. We have tried to request that Southern Electric replace the boiler and the flue and install correctly. The reason why we want a new boiler is that it is only a few months old and is already gathering rust. This means that the life of the boiler is more than likely to be reduced accordingly. What can we do about this?

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Knowhowman's reply to Desperadess's Comment

Written on: 13/06/2014

it is definitely the angle of the flue
ask a gas safe plumber to install flue plumb kit and problem be solved

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Knowhowman's reply to Boiledover's Comment

Written on: 13/06/2014

it is the pressure vessel - i would install external bigger one
you need new prv as well

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★☆☆☆☆

“Warranty useless if you live in difficult parking area”

Written on: 10/11/2013

18 months into 5 year warranty boiler failed! Arranged for engineer to attend, waited in all afternoon on arrival he called and asked where he could park. I had already explained to the call centre it is meter parking around me. He said i needed to arrange permit. There is no such service in my area. So guess what he just left. So no heating or hot water and the engineer just drives off. I It is strange other tradesmen don't have trouble parking, including the boiler installer,but they are… Read Full Review

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★☆☆☆☆

“Pump failure”

Written on: 08/07/2013 by Awareness13 (1 review written)

Thought I was paying more for reliability. After 4 to 5 years pump failed and the replacement cost £340, total including installation £400. I can see there are other common issues too. How can the replacement cost be justified ?… Read Full Review

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Markh802's Response to Awareness13's Review

Written on: 06/10/2013

Think you were ripped off with the price of the pump, can be bought for £90 would seriously think on before you use that gas fitter again the mark up is disgusting!!

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Awareness13's reply to Markh802's Comment

Written on: 06/10/2013

Not sure if my reply submission worked. Here goes again. I know the installer well and although I can't be 100% sure I would be very surprised if he has ripped me off. I assume you are familiar with the exact specification. The replacement was different to the original. Apparently there is a special connection. Do you know about the internal leaking water connection that had to replaced with a different design too? I will check with my installer.
My mother's Ecotec had a problem too.

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Fastflame's Response to Awareness13's Review

Written on: 09/11/2013

A replacement pump inc fitting is £ 250 , thats what i charge my customers , so i am afraid you got ripped off .
Always get 3 quotes .

5 Years is half the boilers life expectancy so dont grumble to much .

Vaillant boilers are the best choice on the market for reliability .

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★☆☆☆☆

“waste of money”

Written on: 02/06/2013

aprox 5 years old and so far the electronics failed ,air pressure chamber leaked , water leaks several times ,noisy pump ,water pressure drops regularly. total cost of callouts could have paid for a good make replacement !!!!!… Read Full Review

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Plumber-Rich's Comment

Written on: 23/07/2013

If the water pressure drops you have water coming out of your heating system somewhere. . Think there is a good chance you'd see it if it was coming out of your boiler, either from the pressure relief outside or from the boiler casing .

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★☆☆☆☆

“you dont always get what you pay for”

Written on: 05/05/2013 by numnuts2 (1 review written)

i was told that vaillant was the best so i bought their best combi, since having this boiler fitted i reckon it has had almost every part replaced, luckily i know availlant engineer so i managed to get it repaired on the cheap, if not i think i woul have had to replace it at 3 years old. it does what it should when its working though. my brother and dad also have this bboiler but havent been as unlucky, although my brothers did need a repir under warranty in its first year. id advise looking… Read Full Review

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★☆☆☆☆

“What Customer Service??”

Written on: 25/04/2013

Had this model fitted in October 2012 and was instantly beset by problems. Boiler gives a violent rumbling which shakes the whole house, both original installer and Vaillant Engineer says it is a combustion problem, but neither know what the cause is. To date, I have had TEN service calls including swapping the boiler for an identical one and still the problem persists. That would be bad enough, but the way in which I have been treated by Vaillant Customer Care is nothing short of a disgrace… Read Full Review

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Hedgerinnit's Comment

Written on: 05/05/2013

It sounds as though you've had a terrible experience, and when I read your review before I called Vaillant about my 3 year old boiler, I was quite worried.
However, I have to say that in my case they were great.
I phoned them at 10.20 am on May 1st, 2013, and an engineer was knocking on my door at 11.20 am. He diagnosed the temperature sensor, (F76 fault) but as failure of this can damage the heat exchanger he ordered the complete unit.
A different engineer arrived at 9 am on May 2nd, fitted the new heat exchanger, and left at 10.30. 24 hours from start to finish.
Of course, one has to be concerned that the fault arose in the first place, but as for Vaillant sorting out the problem I was impressed with their response.
And no, I have no connection to Vaillant, and I'm sorry to hear that you didn't get the same service I did.
Let's hope our boilers keep working!
Best wishes

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★☆☆☆☆

“Rubbish”

Written on: 23/04/2013

The boiler was installed and within a year failed with low pressure fault, even when topped up the sensor would not register, replacement sensor was required, 6 months later, boiler failed again with another fault, pcb issure… Read Full Review

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★★★★☆

“Great Boiler - Customer service the...”

Written on: 22/03/2013

I got my boiler on 2 years warranty and then paid extra to extend it. Boy am I glad I did. The boiler is great but I have had endless problems with the remote that comes with it. I am now on my 3rd different remote and my 6th in total and all in less than 10 months. Vaillant customer service is about as bad as it gets. They don't respond to emails and when you phone it's "OK I'll pass on details of your problem and get someone to phoen you back", but they NEVER do. The customer service staff… Read Full Review

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★☆☆☆☆

“Cannot imagine a more unreliable boiler”

Written on: 16/03/2013 by essjayp (1 review written)

Our boiler was installed in November 2008. Vaillant replaced virtually every component twice in the first 12 months. It has failed continually over its four year history with error code F75, no pressure. There are no leaks on the system; it is the boiler that fails. Either the quality control at Vaillant or the quality of the components they use, or both, is well below minimum standards. Reading the reviews, ours is not an exceptional case. Unreliability is common. I would not buy another… Read Full Review

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★★★☆☆

“Don,t waste your money.”

Written on: 26/02/2013

I was advised to get this boiler as i wanted the most reliable heating system that was avalible.Ok for the first year or so it stopped only on the odd occation and as i had a wireless stat i just put it down to this.Then as the boiler got older i started to have more regular starting problems i then read on the internet that these problems were quite common with the 831. yes ok you can order an update kit for this boiler but for the money you pay you might expect vaillant to at least be honest… Read Full Review

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★★★★★

“Excellent boiler”

Written on: 28/01/2013 by Boilerdai (1 review written)

I've had this boiler more than two years now and it has not failed once. I think a lot of the problems reported here are due to poor installation and bad after sales service. I have a large 4 bedroom property and the boiler meets the demands of a full household without any issues, I would definitely recommend this boiler to anyone. All combi boilers suffer faults, some more than others, this is mainly due to their complexity and they are nowhere near as reliable as the old non combi boilers. I… Read Full Review

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★☆☆☆☆

“Ecotec 837 failed 3 times within the first 10 days”

Written on: 21/01/2013

This is an expensive boiler which failed 3 times after Vaillant engineers had turned up without the replacement parts - a gas valve and then a pcb. Quality control is non-existant and the call out times a joke in this weather - January 2012. If you want decent service and a reliable boiler don't fit Vaillant - a previous Viessman was just as bad for service but they have the excuse of being a minor player with no great reputation. Ask any heating engineer on the street what they think - if… Read Full Review

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Alexbengemma's Comment

Written on: 27/01/2013

I agree with this review my expensive boiler the same as above broke down 19/1/2013 2engineers have tried to mend it without success have had 2gas valves and a new circuit board fitted still not working I am without heating in this dreadfully cold weather and I am at my wits end I am in my 70s and feel I will have to get a new boiler installed as I can't live like this anymore.i am disgusted with Vaillant do not touch them

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