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Which is running dry? I didnt say that. also could you elaborate on why combi for 6 ppl is no good? so 15 lttrs a min - is that quite poor then?

Thanks for the reply - why do you say forget the combi with 6 ppl, even though there is one bathroom (+ 1 kitchen obv). I am not disagreeing, I would just like to know the reasoning behind this. There was a reading done but cant remember. However, I managed to fill 5 litres of COLD...

Thanks folk... the ones I am looking at are either IMI Range or Glendhill I think. application.....OV, gas boiler......

As per the subject title, what are the best OV cylinders to go for and which is better out of copper and stainless steel?

Ok so I think unvented is out of the question as we do not have a 22/25mm running through the house, I also think its probably excessive for our needs (1 bathroom) house. The final heating engineer / plumber visited. His suggestion was also a combi for us 837 vallaint. Im awaiting the quote...

Thanks. Got another guy coming around tonight hopfully to get another opinion and quote but it looks like we will be renewing the system but staying OV. Main thing we need to decide is whether to go for the 162litre or even bigger? any suggestions on how we would approach this decision...

Thanks for your response. By heating size I assume you are taking my number of rads and home type as the guidance to determine the boiler output?

Yes they do work but they are very old so thought as we are doing it, may as well just get new pipes in? The other option was worecester bosch. So by going for a larger cylinder the 18kw boiler would still be ok, I was worried about recovery time etc.

Not sure thats what I wnat? How about just sticking to the OV solution, any answers or suggestions to my question?

Hi folks I still need some help. I had another chat with the unvented install and for some reasons I am questioning whether to go for it or not which I wont go into right now. But it means I am consider the Open Vented solution again. Now would it be a mistake doing this? Is it ok...

I will get the engineer to check this again, if he says all good, then we will go with this option. As for some of the later replies (ignoring the US spam company - why is there soo much on here?!), talking about bad reviews - I am quite suprised to hear this for valliant stuff and its the...

Thanks highleigh as you say, the underfloor heating is different discussion. I am still after opinions on my position and two options I have laid out. There is £500 difference in the two systems (with new CH pipes for both). Opinions appreciated...but please refer to my previous posts for...

Hi Dan Thanks for your response. Update - I can get the unvented system (210 ltr) done for around £5000 now. The equivilent OV system is cost £4500 including new pipes also and 160ltr tank. OV cost without new pipes is approx £4050. Could you tell me more about the safety and...

My only reservations about unvented is the saftey and reliability compared to say an open vented

Thanks for your response. Both contractors are busy locally and the surrounding areas so as for who does the work either will probs be fine. Our difficulty is choosing the right option from one of the two I have detailed. So I am after opinions about what people would do if they had an...

Hi, Have a 3 bedroom midterrace house with two double rooms and one box room. Two rooms downstairs with one to be converted to a bedroom - this is why the current back boiler will need to go. We current have a 450x900 cylinder. 6 people in the house and approx will be having 9 rads. Hot...