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Since I (in my innocence) started this thread, may I bring it back to the original topic? I tested the flow rate today and found I have 33 l/m, which IMHO is pretty good? Which leads me to another question..... Is it perhaps too high? Should I be looking to fit some sort of flow/pressure...

Wow - what have I started? I'm glad I'm DIYing my setup, even if I am still confused about the pros and cons of the various systems.....! You pros have such strong opinions on kit - its either the dogs **** or its rubbish - no middle ground! Calm down folks - life's too short (plus its all...

>> If you think you are going to get a decent solar system for £500/600 then think again. I did! And I would be very interested to know why you think my figures are so far out? It will be a DIY job, as indicated. I will already have the TS with solar coil, as I mentioned, so in my...

Decisions, decisions.... Firstly, yes I was totally convinced on a condensing model, then I started reading a load of negative comments regarding actual savings, reliability, etc, etc. Secondly, I like the idea of solar cos its free after its fitted (DIY costs pretty minimal - maybe...

>> don't understand why unless you want to fit it yourself Yes, I'm DIY-ing it, so its gotta be vented.

I need to replace my duff oil boiler but having read a load of stuff, I am not convinced that a condensing unit is the way to go. Convince me by all means, but: - I'm not bothered by the legislation - I can work round that - I just want the most cost effective solution. - I will be...

>> I don't think thee is much in the price between them. Hope you're right. Def a heat store if that's the case! Cheers.

Thanks again all. I'll check the flow rate tomorrow, but even if the flow rate's down it looks like I should still see a benefit over the current gravity fed dhw AND I will get the benefits of the TS (instant heat & better boiler effeciency.) I'm still torn over a conventional thermal store...

Thanks all, but I'm still not clear on the real world effect it will have if my flow rate comes in lower than 20 l/m. As I said, I don't have showers attached to the dhw, so its only the tap flow rates I am concerned with (yes baxpoti - I should have said flow rate, although surely if the dhw...

'm planning on installing a thermal store/heat store and I understand I should have 20 litres/min incoming mains flow rate min, BUT what's the effect if my flow rate is lower? I can't check it till the weekend. If it comes in at less than 20 l/m does this affect the function of the store, or...

Cheers Chris. Yes, the boler will be a condensing model, so it is great to know that the pump won't have to work as hard. Would you recommend an Alpha? Are the smart pumps from Wilo (and others?) just as good, or should I stick to a genuine Alpha? Thanks again.

I am renewing a duff boiler and thought I may as well change the old pump while I'm at it. Thing is, I've realised the existing pump is potentially undersized for the number of rads. Its a 5 bed house with 23 rads. They are all on TRVs but generally 5 or 6 are turned fully off, but even then...