It depends on the design of your house. If you’re going for a modern design, radiators get in the way. You can add a humidifier to modern forced-air systems to enhance the feel of heating. Any potential buyer will expect forced air to be in th ehouse if the home design is updated. Modern forced air heating is just as (if not more) efficient as radiators now, provided you have proper home insulation. Having a forced air system will also benefit your home’s value more now that DC property values are rising and renovation is occurring. If your house is in a historical zone, or if you’re looking to keep all original details, then don’t touch the radiators. cheers.