New gas/central heating system for home

[MeWilliam]

Hi guys,

Need a new system for a home/HMO, haven't decided yet, and need something in place before all the plastering etc can take place. The plan is 6 bedrooms and one living room and kitchen for a HMO. All bedroom will have a en suite bathroom, toilet and sink.

Currently having a look at the following system:
- Gas combi boiler. Something to heat the radiators in the living room and kitchen water feed.
- Unvented Hot Water Cylinder. To supply hot water to all the showers. This means i wont have to upgrade my electricity supply.
- radiators for living room and hallway.
- Might need something so all the bedrooms have their own heating control, rather than relying on the central boiler, if we have one.

Any and all advice appreciated!

 

[oldbuffer]

1. You'll be supplying hot water to individual bedrooms. How are you going to charge for it, if at all?
2. The size of the unvented hot water cylinder will need to be carefully calculated. If everyone showers at the same time you may run out of hot water unless its big enough. Anything big enough for 6 showers is going to take a lot of re-heating, potentially very quickly. On your existing plan the boiler will need to be carefully sized. Not sure I'd want to use a combi to heat such a big cylinder(s), although it can be done.
3. How are you going to heat the 6 bedrooms. If off the central boiler, then you have another charging issue.

What you are planning is not that simple. I suspect you need a good heating engineer to assess the situation and give you some options, perhaps with outline costings.

And, just to be picky, bathrooms have basins, kitchens have sinks.

 

[MeWilliam]

1. You'll be supplying hot water to individual bedrooms. How are you going to charge for it, if at all?
2. The size of the unvented hot water cylinder will need to be carefully calculated. If everyone showers at the same time you may run out of hot water unless its big enough. Anything big enough for 6 showers is going to take a lot of re-heating, potentially very quickly. On your existing plan the boiler will need to be carefully sized. Not sure I'd want to use a combi to heat such a big cylinder(s), although it can be done.
3. How are you going to heat the 6 bedrooms. If off the central boiler, then you have another charging issue.

What you are planning is not that simple. I suspect you need a good heating engineer to assess the situation and give you some options, perhaps with outline costings.

And, just to be picky, bathrooms have basins, kitchens have sinks.

1 - Probably all bills included tbh. Can't see a better option atm.
2 - The shower system, not electric, i'm looking at Delivers 5Ltr/min at 0.1bar. So about 30 per min if all are used at the same time. I'm looking at a 300 ltr which should be enough for 6 minutes if everyone started at the same time. The issue that comes up now is the size of the boiler needed. Big enough for the water cylinder and the radiators.
3 - i Honestly don't know. Radiators seem to be the cheapest upfront cost. 6 bedrooms, living room, kitchen and 2 hallways. what size boiler for 10 radiators?

Ah yes, Basins!