diffences between combi boiler and normal gas

[psalliss]

basically bought a new house and it needs a new boiler old one is really old. anyway was going for combi but sounds like it might prove quite expensive with labour on top so am thinking about a direct gas replacement boiler in the same place therefore not as much labour. am i right in thinking that it will be a lot cheaper this way. also are combis worth the extra cash

 

[breezer]

I am not aplumber or heating engineer, but if it is a back boiler you have then yes like for like will be cheaper