Progammable thermostat with radiant hydronic floor heat?

Hello: I am looking at buying a home with hydronic radiant heat in the floors. It was built in the 1950's. I was wondering if adding a programmable thermostat to cut back the temperature before retiring would save some $$$. I realize that these types of heating systems heat up or cool down fast.

Thanks, in advance, for any and all replies.

Cheers,
Steve/OHIO

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