We have just bought to a house previously owned by an elderly lady. The house has a back boiler on a one pipe system. The day we moved in we had it checked by a certified engineer (friend). It has been kept in really good condition, but as with all back boilers the fire is ugly with a capital U! My question is this: this house is a stop gap house to get us into the area. It was all we could afford. Do we keep the old boiler and have it affect the resale potential or bite the bullet, have a new boiler and new pipework. The new boiler will make it more sellable but we wouldn't recoup the money because of ceiling prices on this estate. Thank you for your wise words.