Ha, yes, they haven't started yet, but after getting all your good advice here I am much more comfortable that they are indeed the skilled plumbers I was hoping for - and they're very nice too, so that's good! Plus I now know a couple things to check with them and suggest, which can only lead...
OK, that's great thank you - it's really good to know the right questions to ask.
It's quite likely that they will do some or all of these things anyway - i know that the two main plumbers in the company spent a good long time sorting out the best way to do things, where to locate things...
Yes, we're definitely going with the Vaillant boiler after recommedations here, though I don't doubt the Main would do a good job too.
Thanks for the advice about the cylinder - that's what I was hoping to hear I think. The unistor IS pretty (!) but it's going to sit in a loft and hold hot...
Quick update - have discussed the Vaillant (630) boiler with the plumber, and he can't think of a good reason to spend extra squids on getting the compatible uniSTOR cylinder...he still recommends a Main cylinder with the Vaillant boiler.
I assume I can't then use the whizzy Vaillant...
Right, will double make sure that HW is lagged and that the cylinder is sited as close to the (main) bathroom and kitchen as possible. Excellent!
Also, just did the sedbuk boiler size calculation (came out with a required boiler output of 21kW) - the 637 is WAY over the top for my house...
Not totally manic if I'm honest, but it bothers me when I think about it - rubbish, huh?!! Will be on a meter in this house though, so that ought to teach me a bit. We don't have crazy long showers every day and we do pay attention to turning the tap off when brushing teeth etc...that sort of...
That is very valid!! Not just wasting heated water, but wasting perfectly good cleaned water...criminal western extravagance.
So, everything is to be sited in the 2 storey rear (original) extension of the terrace - the boiler in the ground floor kitchen 1 metre sideways from the kitchen...
Thanks!!
I'm not the biggest Hyundai fan - if you reckon a Main is the boiler equivalent, then I'm thinking I'll be a bit more confident in requesting a Vaillant from my plumber..!
The cylinder could be located right above the main bathroom (shower) - that might help. Good to know we...
Just bought an old (Victorian terrace) fixer-upper that needs plenty TLC. No electrics, no central heating... Work starts in ten days. Has 5 bedrooms and will eventually have 1 main bathroom and 2 shower rooms.
Can't afford to have radiators put in yet (12 medium - large plus underfloor...