I haven’t had any luck searching online, so I thought I’d see what the sages of the LR can provide.
I have an oil-fired furnace that also heats our hot water for showers, etc. I have programmable thermostats that turn down the heat when we are away, but the furnace still runs periodically to keep the water hot. Is there a timer or other device that would allow me to turn off the water-heating function when we are away?
BTW, I want to stick with the system I have and not install a new tankless hot water system.
Is it the furnace that heats the water- or do you have a separate hot water tank that is oil heated? My old setup had the latter - you could disable the ignition if you were going away for a while. That said, the cost to re-heat the tank is so minimal compared to letting it cool down and heat up from scratch.
Ignore this message if you are on boiler - this was with forced air furnace.
Good question. I assume you have a hot water storage tank? Makes me wonder if cooling all that water off to save money is worth it? When it’s time to warm the water again, wouldn’t the boiler work that much more or longer to get the water temp up to say 125, vs maintaining 125 the entire time.