You have not shown your location.
Regardless, heating systems costing 2-5 k to fit are insignificant when considering the cost of purchasing property.
Furthermore in London if you delay a completion because of arguing over insignificant the seller is likely to ignore you and sell to another buyer at a higher price!
Anyone buying a house is advised to have the system checked and the boiler serviced when first moving in.
Tony Glazier
Regardless, heating systems costing 2-5 k to fit are insignificant when considering the cost of purchasing property.
Furthermore in London if you delay a completion because of arguing over insignificant the seller is likely to ignore you and sell to another buyer at a higher price!
Anyone buying a house is advised to have the system checked and the boiler serviced when first moving in.
Tony Glazier