Another newb here, and here is my first question.
I just moved into a home built around 1930's. I don't know what the original heating system is, but it currently has a natural gas fired hot water boiler, that feeds cast iron radiators throughout the house.
It has a manaul thermostat and I want to replace it with a programmable one. When shopping for a programmable thermostat, what should I be aware of one choosing one, since I have a hot water boiler? Can I just go ahead and buy any cheap programmable thermostat?
Also, what would you recommend for the pressure of the boiler and the temperature for the boiler?