Which high flow combi setup?

[Paul Hemel]

For reasons I won't bore you with I cannot have an unvented system so am looking at having a storage combi installed. My mains has been upgraded to 32mm and when the new boiler is installed the current 15mm running into my house from the mains will be upgraded to 22mm.

My house is a normal sized 3 bed 1 bathroom with a shower but also has another separate showeroom. There's 2 adults and two kids that are growing up fast so our demand for hot water is rising and there will be times when more than 1 outlet will be demanding hot water. I know combis are far from perfect but would like to ask what you would advise. So far I think the best options are a WB 550cdi, a Viessmans 111W or 222F and the Alpha flowsmart set up. When I've searched this site a lot of the posts seem to be from a few years ago so am really after an up to date response on what experience you guys, the professionals, have with these systems and brands. Are there any others that you would recommend?

i really appreciate your help and advice. Thanks in advance

 

[mutley racers]

I have heard people say good things about the 550 highflow. 25 litres a minute is great for what you need if your flow and pressures are good.

Not looked at the veismann spec but will now

 

[Gasmk1]

the viesmann 111 is getting good reviews but the 222f is very large do you have the room for one

 

[IND_Nick]

We fit 550's whenever space means unvented isn't an option and they perform well. Usual Worcester support is good and, touch wood, never had an issue with them. Just be aware they are really heavy once filled so make sure area you want to install is prepared properly.

 

[Soulman]

The 222f although big is a nice bit of kit, and has the option of a secondary return. Tech say it can run 2 showers at once with no issues, and in practice this is true. Just make sure your showers run off the combination cold supply to ensure balanced pressures at the showers.

 

[ShaunCorbs]

Another vote for Viessmann 222

 

[Howsie]

ATAG Q38 34 litres a minute.

 

[mutley racers]

ATAG Q38 34 litres a minute.

Can you send me a link to this as the one I am looking at is q38c and has 16 litres a minute flow rate

 

[mfgs]

Worcester 550 is a brilliant boiler and can easily cope with two bathrooms.

 

[Roger Welton]

222 if space allows.