Scenario 1: A house with a fireplace insert on the first floor and two heating zones where zone 1 is the first floor and zone 2 is the upstairs where the bedrooms are. Zone's 1 thermostat is set to 62. Zone's 2 thermostat is set to 64. It's a cold night, you're sleeping, the fire starts to die down. At 1 AM, zone 2 calls for heat and the boiler and zone 2's circulator run for 30 minutes. At 2 AM, zone 1 calls for heat and the boiler and zone 1's circulator run for 30 minutes. Throughout the night, this keeps happening: one zone calls for heat, the boiler and circulator for that zone run for a while, stop and some time later the other zone calls for heat, which makes the boiler/circulator run for a while again.
Scenario 2: Same setup as scenario 1 except that when one zone calls for heat, the circulator in the other zone also turns on. Example: it's 1 AM, zone 2 calls for heat and the boiler and zone 2's circulator run for 30 minutes. At the same time that zone 2 called for heat, zone 1's circulator also turns on and runs until zone 2 stops calling for heat.
My question: which scenario is better in terms of saving on oil and keeping your house warmer overall and why? Please don't change the scenarios when you answer.
My thinking: since the boiler is already running when one zone calls for heat, leveraging that work to heat the other zone at the same time is more efficient than heating each zone individually. In other words, I think that by doing this you end up spending less oil and keeping the house warmer overall.
Curious to read what you guys think about this! Thanks.
Scenario 2: Same setup as scenario 1 except that when one zone calls for heat, the circulator in the other zone also turns on. Example: it's 1 AM, zone 2 calls for heat and the boiler and zone 2's circulator run for 30 minutes. At the same time that zone 2 called for heat, zone 1's circulator also turns on and runs until zone 2 stops calling for heat.
My question: which scenario is better in terms of saving on oil and keeping your house warmer overall and why? Please don't change the scenarios when you answer.
My thinking: since the boiler is already running when one zone calls for heat, leveraging that work to heat the other zone at the same time is more efficient than heating each zone individually. In other words, I think that by doing this you end up spending less oil and keeping the house warmer overall.
Curious to read what you guys think about this! Thanks.