Boilers/furnace - tankless or tank?

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Jimmy,
Programmable t-stats are great,don't get carried away thinking thoughts of grainger with turnning you heat whaaaaay down when you sleepiong of when not home.You will not save $$$ do not go more than 5 degree increments when in un-occupied mode or when sleeping night time setting mode anything more than this will defeat the of economical aspect of the t-stat.