Central Heating New Install - WHICH?

Ok after the other Threads a bit of back ground.

House is a Scandanavian Built Semi (circ 1979) with 3 Bedrooms

Hot water is by a tank in the airing cuboard off of an electric Thermostat and timer. Heating was electric panel heaters from a central control Point. Secondry a LPG stove (fluless) and Gas LPG hob ( from 2x 47kg Bottles) have been retro fitted. No option to put in a chimney and currently LPG Tank siting may be an issue. Location is Northeast scotland (Village) with no mains gas.

The Questions is what typ of system. Not what type of Fuel!

So I suggested a Combi fired Boiler for hot water and Heating however in another thread someone else suggested a small boiler and a thermal store. ect.

So keeping budget for whole system (inc Tanks etc) at about £5000 MAX. What would the consensus on system be remembering that that 5K need to include the Plumber that has to fit all of it.

System will be 8or9 Radiators, 2 Sinks, 1 Bath / Shower.

if you are talking about a bath/over bath shower then get a combi, nothing less than 28 kw

your cylinder is 30 years old, will get ye £30 in scrappy

boiler, 9 rads, 8 trvs, pipe n fittings , cleanser and inhibitor, decent controls (weather compensator,roomstat,outside sensor) and fitting
is well inside your budget

make sure yer plumber is Gas Safe Registered

Is Combi the best option ? or would there be a better design

( And yes it is shower over bath)

you could have an unvented cylinder, but you only have one bath/shower

if your in having a bath somebody cant be having a shower can they?

so if you dont have excess hot water usage ( 2,3 showers running together) then there really isnt much need for a "store" of hot water

get your mains water pressure/flow rate measured first

if pressure/flow rate allows,get a combi to match flowrate/pressure

ie if you have 20 litres per min incoming mains fit a combi with a flow rate
= or slightly less than