Written on: 05/05/2013 by numnuts2
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... (read more)
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... (read more)
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 more)
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... (read more)
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... (read more)
Written on: 28/01/2013 by Boilerdai
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... (read more)
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 more)
Written on: 09/12/2012
I stayed with Vaillant because I was so impressed with the 15 year life of the previous boiler. And I got a 5 year guarantee with the new one. So I was unimpressed when on the first day it fired up and then stopped with an F28/F54 error. Long story short - Vaillant came out and said because it's one of the first off the production line (oh great) the fan speed was set to 400 so he upped it to 600. This corrected the problem, I had one F54 after this but after a reset it's been fine since... (read more)
Written on: 01/10/2012
I had the new boiler fitted 2 years ago and called Valliant out 10 times during which time they could find nothing wrong with the boiler, oddly enough the second the 2 year warranty ran out they miraculously found a problem so £250 later my boiler was supposedly repaired. This boiler was not cheap, it's only been in 2 .5 years and I am seriously considering replacing it, as I said it's a disaster and the Custer service is the worst I have ever experienced. (read more)
Written on: 27/09/2012
The Valliant Ecotec Plus 831 has just broken down for the 4th time in the last 18 months. This is a four year old boiler. Our previous boiler, a Potterton, which had performed well for 30 was replaced late 2008 because we understood Combi boilers were a lot more economic. Wrong! So far the cost of spares purchased to repair this Valliant is almost equivalent to purchasing a second boiler. Nearly all the issues have an underlying problem and that is one of fluctuating pressure. I... (read more)
Written on: 26/09/2012
hello, if you are thinking of buying a valliant eco tec plus 831 boiler, i would def stay away from this model,its total rubbish, locked down now 5 times in 7 months,with the fault f28,first first week after installing this rubbish, pump failed, managed to get 2 years trouble free service then after the warranty ran out, locked down with this fault,f28, valliant were not interested, wanted £283plus vat to call and repair,to get to this point i spent more than 2 hours trying to get in touch... (read more)
Written on: 25/09/2012
OK ... new house with heating system 5 years old all under British Gas warranty ..... state of the art .... what could be wrong with that? Simply put the Vaillant Eco-Tec boiler is unreliable. British Gas and my heating guru and 3 other plumbers all say the same thing .... over-complex and the F75 or 22 problem has never been solved properly. Boiler fails to come on ... but power it off/on and it works again. The concensus opinion of all the guys including BG is that it a well known... (read more)
Written on: 19/06/2012 by brpmptonguy
my boiler was installed just before last xmas first f22 came up and had to get enginer out to sort he fitted a switch then about 2 wekks later the pressure was very low so had to fill the system up on the boiler the installer said i had external water leak but none was visible so i lifted floor boards to see if it was leaking but found no leaks anywhere then the pressure went crazy high n low so contacted service engineer they came and fitted a expansion chamber which cured the problem ... (read more)
Written on: 04/04/2012
I have read numerous reviews on this site, many of them citing the failure of rubber hoses and pump failures as one of the main causes for complaint. As a result, I feel my own experiences and observations may be of help to those contemplating purchase or indeed those who continue to have problems with this boiler. On 22 September 2006 I had a Vaillant EcoTec 831 combination boiler installed and commissioned into a brand new central heating system. The copper pipe and radiator system had... (read more)
Written on: 04/04/2012
I had the boiler installed in January 2007 on the advice of Which? and a range of other reviewers. Since then, not including installation costs and annual servicing, I have spent over £1,200 on repairs including a new heating exchange and, as of today, the Honeywell control/timer also needs replacing. That's quite a lot of additional expenditure ona 5 year old boiler. I keep being told by the engineers that I'm just unlucky - but reading these reviews now makes me wonder if this product is... (read more)
Written on: 02/03/2012 by RobertMeier (1 review written)
I bought this boiler, in 2006, on the recommendation of our plumber, after our Potterton, open flue boiler, gave up after 40 years of good service. This new boiler broke down 5 months after the 2 year guarantee run out. One of the 2 rubber reinforced pipes split splashing water everywhere including the fan circuit, all of which had to be replaced at a cost of over £300. German engineering supposed to be one of the best but how can Vaillant install rubber hoses in a boiler? This should be... (read more)
Written on: 23/02/2012 by denmartini (1 review written)
I bought this boiler after reading reviews on this site. We've had it installed for about 3 weeks now. Touch wood it works perfectly and very quiet. The installation engineer had problems installing it though - Valliant themselves had to be called in as a sensor had broken 'in transit' - the sensor cuts the boiler off because it thinks it's getting too hot when it isn't. Frustrating that a high price boiler didn't immediately work, but now happy with it. (read more)
Written on: 02/02/2012 by JJN750 (1 review written)
We had the 831 fitted in 2007 buy a reputable fitter and we haven't had a seconds trouble. Having had various houses with various boilers, this machine is the only one that hasn't missed a beat and continues to deliver. Like most mechanical items things inevetably go wrong, but to date our ecotec 831 continues performing, (read more)
Written on: 18/11/2011 by Geronimoe (1 review written)
Normally i never comment on reviews but after reading some of the reviews on here i feel i must defend what is probably the best boiler on the market. Yes it has had a couple of problems with bad seals and the rubber hoses leaking. but these problems have been rectified and the manufacturer owned up changing the design as they became known. I cannot think of another boiler manufacturer who does this. Most of the negative reviews detail bad installations and poor workmanship which is down to... (read more)
Written on: 06/11/2011 by Steinerone (1 review written)
Hello Do not purchase any Vaillant Boiler, my 837 Eco Tec boiler was installed on November 2008 by a Gorgi Registered Heating Engineer and the central heating has never worked correctly with no F numbers showing on the LCD screen at any time, it was erratic for winters 2008/2009, erratic and would not work at all on many occasions for winter 2010 and I tried the central heating last week for this winter 2011 and it will not work at all, the hot water has worked at all times, so that is... (read more)
Written on: 07/09/2011
Our boiler was installed last November and got us through the cold winter. We've had no problems whatsoever and our engineer will be servicing it (for free as it's the first service!) in a couple of months time. We have a Honeywell wireless programmer to go with it. The boiler is quick, quiet and efficient. I feel sorry for people who have had problems but I can only think it is due to a combination of poor installation and over-high expectations. Our installer wasn't cheap - in fact... (read more)
Written on: 05/03/2011 by Dave fitz (1 review written)
Have read a few of the remarks.
I can't believe that we are talking about the same boiler.
I am a heating engineer and over the past 18 months I have fitted approximate
200 Vaillant boilers. Compaired to some of the other boilers of the Market
The Vaillant comes out top all the time, from eas of installation to
The high tec built in controls. I believe most problems with pump
Sticking and parts leaking is due to the installers not making sure the
Water quality is good. (read more)
Written on: 24/02/2011
I had the EcoTec plus 837 installed in 2007. We had to downgrade the vile programmable controller (VRT360/230) as it was so complicated to use and have reverted to the beautifully simple 24 hour analogue central heating switch (Time SWITCH 130) connected to a room thermostat. During all recent cold snaps it has been on night and day, servicing a family of four. It has never been serviced and works perfectly. Would recommend! (read more)
Written on: 18/02/2011
Less than 18 months old and it has failed five times so far, It has now had two replacement pressure switches and a replacement pump. I have also had two system flushes.
As I write this I am waiting for the engineer to call yet again, this time the pressure is to high thankfully it is still working this time and just flashing a warning.
My old boiler a Rayburn was 25 years old and never had a problem except for one pump and was still working when I had it replaced. (read more)
Written on: 12/02/2011
I'm a gas engineer
Installed a ecotec 831 three years ago in my mums house, power flushed the system with chemicals installed magna clean twintec and added inhibitor at the end.
The pump has been changed twice the hot water senser was leaking so that was changed and the timer packed in so the heating kept coming on so I had to buy another one.
So many customers ask for this boiler I don't recommend it same as the worcester range don't recommend these either had loads of problems from... (read more)
Written on: 29/01/2011
The pump on a Vailant eco plus 831 fitted in July 2007,went down in November 2010 and a replacement was fitted by a qualified local engineer at a cost of £200. He was surprised that on going to the wholesalers that plenty of pumps were on the shelves. He said that this was a sure sign that Vailant had a problem with pumps, something I later found out to be true.
In December I told the engineer that when calling for hot water it would be cold but the radiators would get warm. He came and made... (read more)
Written on: 25/01/2011
I used to buy two Vaillant combi boiler. First one is Vaillant turbo max. The diverter valve 252457 only lasts about one year. I had to buy three of them in the last five years. I gave up and bought a new vaillant ecotec combi boiler which is a new generation of condenced boiler. I could not believe how the hell Vaillant put this boiler in the market. There is design fault. They used two rubber pipes to connect the heater. The clips they used are not strong enougu to seal the rubbee... (read more)
Written on: 11/01/2011
Had a Valiant eco plus 831 fitted in March this year, first winter and it fails on 2 counts.
1. Water pressuure is down to 0 and wont provide either hot water or heat radiators. Engineer called, pump has failed but he cant swap it since its still under warranty. He did manage to get it going again tho.
2. Its a condenser boiler that has been installed to vent into a plastic pipe below the boiler that leads outside abnd connects to a downpipe on outside wall. Now I dont know about anyone... (read more)
Written on: 09/01/2011
Vaillant were once the market leaders in Combi boilers but not any more. If You own one of the Ecotec range, You are in for trouble. They have made so many mistakes with these boilers it,s difficult to believe. Burst hoses, failed cheap pumps. When you come to change the pump the whole assembly has to come out because the new pumps won't fit.Even the burner seals failed and melted other internal components. That's if you didn't experience the screaming sounds coming from the wrongly sizes... (read more)
Written on: 23/11/2010
I am a gas engineer of 37 years my main job is repairing combis.Just fitted an ecomax 35 in my house (Yes a ten year old boiler)works like a dream,built like and old merc,we are scrapping boilers from b&q after 3-5 years,i know mine will still be good in another ten years,how many vaillants do i go to repair,very few,Worcesters,hundreds and all the rest.Plus the top of the range ecotecs like mine are so easy to repair,love them,parts are expensive yes but you get what you pay for. (read more)
Written on: 22/11/2010
Brilliant boiler- walks all over Worcester. The problems listed by others on this site are mainly down to incorrect commissioning by plumbers who shouldnt be fitting them or heating engineers who dont commission the appliances properly. ALl they need to do id read the manufacturers instructions properly and these problems wouldnt happen (read more)
Written on: 20/11/2010
I saw a posting about the internal rubber hosing issue. The latest generation of this boiler does not have rubber hosing (I had a look).
Even if it did - it's less about the quality of the boiler and more to do with the fact that if a system has dirt and sediment any new boiler will fail eventually anyway.
Customer service is not as bad as the reviews stated. The big heating dial fell off, I called them up, no quibble, they got someone to come round first thing. He was pleasant, efficient... (read more)
Written on: 15/11/2010
Vaillant EcoTec 835 - ours is 5 years old and starting to develop problems. We've just had the Automatic Air Vent replaced and it's still losing pressure so it looks like the Expansion Vessel needs looking at. I wouldn't trust any make of boiler to go problem free after about 5 years but I know people with cheap Baxis that go for 10 years fault free. You pay a premium for Vaillants and they probably are more efficient than cheaper makes so I guess you are getting your money back in a way. (read more)
Written on: 14/11/2010
Well this came with our refurbed house and I`m not impressed!! Comes on when it wants-doesn`t when cold out. It`s brandmew and the installer isn`t interested in back up. Instructions rubbish! I can get anything to work but not this!!! and no quick ! hour button either. Too sophisticated? Probably. Today I feel like getting it ripped out and replacing with a basic Potterton :( (read more)
Written on: 12/11/2010
We recently installed valliant eco plus and so far so good. our engineer only installs valliant as they are most realiable boiler and virtually problem free unlike other make of boilers. if someone asks him to install another make of boilers he refuses as he had lot of problems in past with other makes but he said valliant (eco plus) is 100 percent realiable so you dont have to look back if you have one! (read more)
Written on: 24/10/2010
I have Vaillant EcoTEC PLUS for more than 3 years. Never failed. Never had any single problem with it. Serviced once two weeks ago. Plumber said everything is ok with it. Would recommend. (read more)
Written on: 22/10/2010
Well 2 internal leaks in two years. The internal rubber hoses fitted had to be replaced with copper at my cost - because vaillant dont do the rubber any longer, an obvious admission of a problem. Second, now there's another internal leak developed and wet the pressure sensor... The inside is infact corroded from the slow leak. Oh and before anyone mentions, this was a whole new system, fresh copper in the whole house and new rads/cylinder etc. So no old dirty water either... in fact after 2... (read more)
Written on: 20/10/2010
There's a Vaillant ecoTEC in the house I've just started renting. I just want to comment on the dreadfully inadequate and unclear instructions for use. Nowhere in a 14 page manual does it tell me how to set/change the inbuilt timer. I've had to discover it for myself by trial and error. I've just managed to work it out, though I'm not sure I've got it right. (any tips from the many heating engineers who've contributed here would be welcome!)
Kate (read more)
Written on: 16/10/2010 by Chadservice (1 review written)
I have a Vaillant Boiler and I have been installing them regularly for the last two and a half years. All the old reported issues with the hoses have long been rectified so I have had no problems with the Vaillant EcoTECplus 831's that I have installed. I now offer an extended 5 year warranty of parts and labour for these boilers so I must have full confidence in them as I am the first person the customer would call in the event of a breakdown. As otjher engineers have commented on this... (read more)
Written on: 19/09/2010 by gjpountain (1 review written)
I own the ecotec plus 837. Bought it due to reviews from plumbers etc saying how good they are etc.
My experience is somewhat different.
Pump went shortly after 2 years - out of warranty!
Now after 3 years the heating keeps turning itself on even though turned off. Woke up at 5am to hear the boiler come on and the pump start up - the radiators were already warm. (the heating switch was off) it has 3 positions (off/on/timer)
How efficient is that? You would think that an on off switch... (read more)
Written on: 06/09/2010
Any negative reviews on Vaillant boilers in my opinion are wrong, if the boiler has been fitted incorrectly without flushing the system etc can cause problems. Vaillant boilers are the best by far, nice to install, easy to repair on the rare occasion they break down and without a doubt the most reliable. Since fitting these boilers over the last year I have had literally no call backs apart from the odd person ringing and asking why it cycles every half hour or so which is always the comfort... (read more)
Written on: 01/09/2010
As a gas engineer who specialises in the repair and maintenance of gas boilers, I am amazed at the number of negative reviews here. I can only assume that the negative reports are as a direct result of poor installation and would affect any boiler.
In my experience the Vaillant boilers are easily the best available, you only have to take a look inside to see the evidence of superior German engineering compared to some of the thrown together boilers currently flooding the market.
If you want... (read more)
Written on: 25/08/2010 by fish223377 (2 reviews written)
Whenever possible I install Vaillant. Their boilers are second to none. The reason I recommend them is that they are fit and forget as I almost never get a call back on them and when I do it is often down to user error. Someone here complained that the heating came on when it was switched off. Their problem is they have activated the comfy start. If they deactivated it the heating would not come on. Service is shocking and technical support can take forever to get through. Then again... (read more)
Written on: 03/07/2010
Most, if not all the problems encountered, are due to the radiator and pipework system not being thoroughly cleansed to remove dirt, sludge and magnetite prior to the boiler installation. Simply draining down and refilling the system is no use. The system should be powerflushed using chemical cleaners. A suitable magnetic and particulate filter should be fitted on the central heating return pipe to the boiler as well, to trap any residual particles. New boilers are no different to new car... (read more)
Written on: 22/05/2010
If you are a consumer looking for a boiler and read the reports on this site about any Vaillant boiler you would never buy a Vaillant. This would be the worst mistake you could make (well at least involving your C/heating anyway). Anyone how gives a Vaillant boiler less then 4/5 knows zero about gas boilers. How can I be so confident about these boiler I here you ask? Well I'm a BG repair engineer for 20 years and I can say with out doubt that these are the best domestic boiler you will get.... (read more)
Written on: 19/05/2010
Lots of reviews go on about rubber hoses and flow sensors. I use this comparison, you win the lottery, and you buy the car of your dreams! You proudly park your new dream car in your garage. Sitting in the corner of your garage is a old water can and oil can, that have been sitting around for 5 to 20 years! WOULD YOU ADD THE WATER AND OIL TO YOUR NEW dream CAR...so why do it to your NEW EXPENSIVE BOILER..dirt debris from the system cause the problems with hoses and flow switch! The Cleaner... (read more)
Written on: 04/05/2010
Bought the ecotec 831 a couple of years ago after our old boiler died and we have had nothing but trouble from water leaks from the rubber pipes and already changed the diverter valve as that was also leaking and now the central heating comes on on its own when ive got it turned off,i will never buy a vaillant again.As to customer service which want a £200 call out charge for one of there engineers to come out,dont bother just add another £250 and get a decent boiler. (read more)
As rated by real users
"Save your money a buy a Heatline!" Read More
"Should NOT be considered" Read More
"Never buy this boiler" Read More
"Two major breakdowns in just a..." Read More
"Total rubbish do not buy. WATC..." Read More