Viessmann Climate Solutions UK Reviews 

Job was done really happy with service

Fast, professional and competent installation and the product works perfectly.

The boiler is quiet and very energy efficient compared to my last one.
It comes with a 12 year warranty ,what more could you want…. Want to try weather comp and open therm and have it set for our retirement in a couple of years. Install was good and we are very happy with boiler.

Definitely best boiler in the market. Works like magic and very quiet. If boiler then definitely ONLY Viessmann.

I’m very pleased with this boiler Viessmann Vitodens 111-W. This comes with 10 years warranty. The whole process was completed within 3 weeks; placing an order to installation. I would highly recommend this boiler to anyone looking to save money and piece of mind. We have now lots of space in the loft. 45 litre hot water is available all the time with pressure.

Started on Fri 20 March.No hot water.check pressure, ok.call our local eng, came later same day, noticed with tap running for many mins. water barely warm but rads boiling hot. Basic function of compact condensing biolers is heating OR hot water and never together. Took him 10 mins to work out prob. with changeover valve or circuitry and then apologised as it falls under gaurantee
so has to be repaired by Viessmann Eng. He rang Telford to book call, stressing were 2 dissabled pensioners needing hot water & heat, and for Viessmann Eng to bring a new valve. Call is logged and someone will ring back and arrange visit date. Earliest date avail. is next Sat. 28th. Back to living out of a kettle, reminds me of camping trips as a kid. Sat 28th eng. arrives, did you bring valve? valve- what valve! I'll check wiring, 20 mins later, Ive found some loose connections on sockets to main circuit board, all tightened plus suspect outside temperatur sensor so dissconnected and will order plus some new wiring looms, but all ok to use. Great, we'll have a bit of lunch then try it. Guess what! NO hot water
and rads so hot you cant touch. It's Sat, 14.30 I'll ring Telford - no go - office closes mid day, seems that an appliance bought for use 24/7 you can only contact Viessmann during office hours, brilliant ! Rang office on Mon.30th . Earliest visit will be thurs 2nd April afternoon, Eng arrives, fits parts, and smiling says I've also upgraded your software. All is working and leaves.
Bungalow is getting very hot, rads are on. No control, cant turn off. Shut boiler down. I note this fault has only happened since software upgrade so out with the manuel to check settings but no joy as programmes have changed. Must thank Eng for updating writeup !!! So ring office to speak to a technician, what a joke !, my request has been passed to a demands team who will ring back to arrange a call date, Just couldn't make it up, what a way to run a customer service!! So hearing nothing I rang the office again this morning eventualy getting through to an eng. who said he will e-mail new procedures process. So, its now 15.00 on Tue. 7th April and i'm wondering just when will Viessmann pull its finger out and place customer service as its first priority, I sit with fingers crossed

working well no problems at all

The installation took much longer than anticipated due to a wiring fault within the new 100-W B1HG boiler. Many calls to Viessmann's helpline failed to assist and after much investigation we finally discovered a fault associated with the DHW sensor neutral line.
The boiler now seems to be working well and I am using the ViCare App to assist.
The system utilises gas burner modulation for controlling the temperature and I understand it also controls the speeds of the circulating pump and the cooling fan. This system seems to hold the room temperature to the set temperature very well, following a settling down period of a few hours from initially being turned on each morning.
My DHW is tank stat controlled to appx 60°C and at the moment is heated from the boiler water, factory set to a modulated 85°C. (I have not yet discovered whether it is possible to reduce the primary temperature using the ViCare App). Time will tell whether this modulation system is better than the conventional on/off system that I am used to, and I wonder whether wear and tear is reduced due to less cycling, or increased because components such as fans and water pumps are running for much longer periods.
The ability to be able to control the system via the App is excellent, but the ViCare App has a few limitations which could be easily fixed. For example, a glance at its homepage shows whether the burner is on or off. It would be far more useful to display the gas modulation rate, 0% being off and 100% being full on, with other percentages shown between, perhaps as a bar of varying height. I would also like to know the real time pump speed - high, medium or low. DHW temperature is shown as either 13.5°C or 74.1°C, presumably dependent on whether the tank stat is calling for heat or not. These arbitrary figures could be more suitably displayed, but are essential to indicate to the user when the hot water tank has fully heated.
As an end user, I would like to know that the boiler is operating as intended and to better understand the algorithms utilised by Viessmann, but I am unable to find suitable user manuals to give me the relevant information. It is interesting to note, for example, that sometimes, when the controller temperature is set lower that the measured room temperature the burner remains on. Perhaps it might be influenced by the temperature of the returning radiator heating water. It was also interesting to note that once turned on, the boiler continues to heat the hot water in the tank until the stat turns off, regardless of the time settings of the controller.
Nevertheless, the boiler is structurally sturdy and well made and is running nicely, keeping our house pleasantly warm and I expect to enjoy using our new Viessmann boiler for many years to come.

I’ve now been without hot water for over 10 days following a visit from a Viessmann engineer.

The engineer attended, replaced a valve, and confirmed the system was working — however, it failed again immediately after he left, suggesting it was not properly tested.

Since then, I’ve had no resolution. This included a bank holiday period with no support available, guests staying at my home with no hot water, and the need to pay £180 for an emergency engineer — who also couldn’t fix the issue.

For a company of this reputation, I would have expected a far higher standard of service, including proper testing before leaving and clear follow-up support.

I am still waiting for this to be resolved.

Dealing with the company

Excellent boiler replacement

The one thing I really want to pass on is that they do not have an external complaints procedure. I was not happy with how my complaint was going and was told the next step was to contact a solicitor. Avoid this company

At last I have a boiler (viessmann Vitodens 050-W) that delivers the correct temperature that has been set on the wireless remote thermostat , & stays at that temperature(neither going above or below).
So no more overheating, & cooling down.
Well impressed. Can’t ask for more.

The installation by SW Heating was professional, courteous, prompt and efficient. Happy with system and installer. Heating and water all working well.

Everything went well and the boiler is very efficient and easy to operate. The install was carried out by a registered Viessmann installer and his product knowledge was great. The boiler seems very well built and robust along with the easy to use control panel all adds up to a great decision purchasing it.

Called out to deal with an issue that a certain well-known British gas company couldn't. Polite and professional- and problem solved! I couldnt be happier, highly recommended.

Engineer Craig came out to fix a boiler fault and did a great job. Turned up on time, very courteous and professional. Very good service. Thanks Craig!

The five stars are equally shared between the quality equipment Vitocal 150-A ODU and the exceptional level of skill of the heating engineer.

After a couple of initial hiccups - room control not pairing with boiler and time 1 hour ahead of GMT - we are now very happy with the boiler and the ability to control from the App. The pairing problem was resolved by a Viessmann engineer - 3 days later which was very frustrating given it was a new installation. However the time zone problem was resolved by their Tech team immediately. The installer did a great job.

Had fault messages that needed addressing. First engineer swapped out the PCB board, hoping that would rectify the issues. Unfortunately not. Second engineer, Irfaan visited on two occasions thereafter, more to do with getting the correct parts. On leaving the boiler was in great shape and left us with a toasty home.
I must say Irfaan was thorough, professional and kept me informed about all that was happening, including not being able to make a previously planned appointment due to waiting on parts.
He’s a true asset to Viessmann.