4 pipes or two ?

[OhGranny]

Hi
Can anyone help?
I am moving into a house (hopefully soon) and the central heating has been drained because of a leak and the house being vacant.
I think it is an open system I know there is a Hot water tank and a 2 water tanks in the attic - the smaller is the expansion tank I presume.
I got a quote from a local plumber to re-commission the system and for boiler replacement - the last report says the boiler is in poor condition.
He said I could convert to a combi with "instantaneous hot water" but the price depended on ease of converion and if I had 2 or 4 pipes coming out of the hot water tank.
Any advice on what he might mean and what are the pros and cons of changing to a combi?
The existing boiler is ancient and there is an electric immersion fitted also.
Thanks
G.

 

[Bahco]

Read this

 

[OhGranny]

Thanks Bahco - last fag I had was last Christmas never thought I'd last this long.
Stopped for 17 yrs once and started again - spent most nights dreaming of a fag - still do !!!!

 

[Bahco]

spent most nights dreaming of a fag - still do !!!!

Doesn't really bother me but sometimes it would be nice.................

 

[John506]

spent most nights dreaming of a fag - still do !!!!

What does your Mrs say?
Have you come out to her yet?