I am renting a duplex built in the 1960's. The property manager told me the heat source is "radiant heat". I cannot figure what exactly this means. The duplex has a small heat control box is each room, which very much look to have originated in the 60's. There are no vents (there is wall a/c) and no radiators so I cannot figure out where the heat comes from. Did radiant heating exist in the 1960's? What else could it be?

Jamie in Nashville, TN

Infloor radiant heat using cooper pipes have been around since the 50's or maybe earlier.

However, in some of them the copper has deteriated and not longer working.

Also during the 60 and 70 there was in ceiling electric radaint heat.

Do you have a central boiler or heater and pumps and valves?

If not I susepct that you have ceiling electric radiant.