[gcanyon]

It's an awesome hack!

It seems like the easier hack would be to put a peltier heater/cooler under the thermostat then control that remotely to assume control over what temperature the thermostat sees.

The link to the exact model of thermostat isn't working, so I don't know how amenable its design is to this approach, but the thermostats I've used are generally wall-mounted and putting a heat/cool source under them wouldn't be too hard. You'd need to make sure that you didn't send both the heat and cool into the thermostat, but that's a simple positioning problem.

[paulkrush]

Cool idea! It's ironic that this is such an efficient use case for device that is so inefficient.

[looofooo0]

Actually the best control system for such a boiler would be to control the heating curve where heating water temperature is fixed to the outside temperature. If you aim for the lowest water temperatures possible, then the system will become quite slow reacting. Then you only need to adjust the flow of water to the individual rooms to fix varying temperature issue. But this is long term manual optimization process which takes 1 to 2 years to perfect.

[catsma21]

yeah i put mine in the freezer