We've viewed a house we really like that requires some cosmetic work but in a perfect location etc. However the house has a warm air vents system (gas). Has anyone bought a house with warm air vents? How are you finding it and did you get it changed to gas central heating? If anyone has any ideas of how much roughly it could cost to have it changed to gas central heating and if it's a really difficult job to have done it'll be much appreciated. Thanks