I would most certainly reather have a house with no CH than one with a
cheap and nasty system for which I was being charged a few grand more.

That way its my choice what I put in..

BUT ask you estate agent.

If its the sort of 'move into it right away' type place, then
modernising it will make it very saleable. In fact it wants to all LOOK
new - thats what first time buyers want.

Quite.. With very rare exception this is what people want these days
they don't have imagination anymore.

Perhaps there're out working all hours to pay the mortgage!.....
--
Tony Sayer