Viessmann Vitodens 111-W DHW Storage Combi
The Viessmann Vitodens 111-W DHW Storage Combination boiler is available in two different output flow rate options 26kW or 35kW.
This boiler is mainly aimed to suit homes with three bedrooms or more with multiple bathrooms and have a high demand for water.
The boiler has a ErP A rating for efficiency which instantly tells you your fuel bills will be as low as possible, even more so if you you are replacing an old inefficient boiler.
HOW THE BOILER WORKS:
The Vitodens 111-W produces high Domestic Hot Water (DHW) convenience through a cylinder loading system (CLS) and integrated stainless steel storage tank which contains 46 litres of water.
It has a hot water flow rate over 18 litres per minute and includes a built-in filling loop for areas with pressure that is on the side.
Every 10 minutes 200 litres of water at a temperature of 35 degrees Celsius is the peak demand for hot water available.
This boiler is suited to properties which are extremely well insulated due to the modulation ratio of 1:6 where the self-diagnostic system will lower the power output of the boiler as necessary. This will save wasting energy and reduce fuel bills.
The boiler includes a backlit LCD touch screen and includes a control panel which is user-friendly and simple to use.
The boiler range has been designed to be simple to install and service for the heating engineer.
COST & WARRANTY:
The cost will vary depending on which size output flow rate your Gas Safe engineer recommends you need to run your home comfortably and effectively. 
As a rough guideline the price usually starts around £1,900 including VAT but not installation fees.
Installation fees will vary. If you would prefer your boiler to include installation fees, go to boilercentral.com
As for warranty which is great for peace of mind this range comes with a parts and labour warranty of 5-years.
Boiler Central offer a huge 15-year warranty for all Viessmann boilers, they are the only company in the UK to offer such a tremendous lengthy warranty.
MODEL&COST:
| TYPE | DIMENSIONS | MAXIMUM FLOW RATE | OUTPUT | EFFICIENCY RATING | TYPICAL PRICE | |
|---|---|---|---|---|---|---|
| Vitodens 111-W DHW Storage 26 | Combi | H – 900 mm W – 600 mm D – 480 mm |
N/A | 26 kW | A | £1518 |
| Vitodens 111-W DHW Storage 35 | Combi | H – 900 mm W – 600 mm D – 480 mm |
N/A | 35 kW | A | £1632 |
BOILER INFORMATION |
|
|---|---|
| stainless steel heat exchanger (Inox-Radial) | Reduce maintenance costs and increasing the life time of the boiler |
| Hot water capability of more than 18 litres per minute | Home Comfort |
| SEDBUK A Rating | Lower Gas Bills |
| Various Kw Heating Output – 26KW, 35KW | Various Home Sizes |
| 46 litres of water | Ease of installation |
| User-friendly control panel with a backlit LCD touchscreen | Faster Flow Rate |
| Which Rating 76% | Based on reliability, satisfaction & ease of repair |
| The boiler comes with a standard 5 year guarantee on parts and labour. | Peace of Mind |
CONCLUSION:
All Viessmann boilers which are german manufactured are known for great performance and reliability. The Boiler Central 15-year warranty proves this. No company would offer such a long warranty if they didn’t believe in the boilers.
Which? give Viessmann a overall score of 76% and all of there boilers are recognised by The Energy Saving Trust.
If you are looking for a boiler which offers high demands of hot water but you are too short of space to have a system boiler, this is the boiler you are looking for. DHW standing for Domestic Hot Water has a storage tank which holds over 40litres of water and the boiler is one unit which is wall-mounted. 
The boiler has been awarded a 5 star rating for reliability from the customer reviews.
The only downside to this range is, parts can be hard to find on the market so if you need a replacement part it could take longer to be found and fitted.