The common c wire doesn t control heating or cooling.
Dual fuel furnace wiring.
Heating with a dual fuel heat pump.
What makes this system so.
As long as the temperature is above 35 degrees f or so a heat pump can pull heat from the outside air for less than it costs to fire up the furnace.
The furnace kicks in for only the coldest months.
If it were always that simple you d be all in for dual fuel no matter what.
Natural gas is more efficient for bigger heating loads so the dual fuel system uses gas when temperatures get really low.
Dual fuel systems heat pump with furnace dual transformer systems systems that have more than one r wire whole home humidifiers and dehumidifiers compatible with nest learning thermostat only.
The dual fuel set up.
Dual fuel technology combines the cooling and heating performance that you get from a heat pump with the consistent heating capacity of a gas furnace.
The electric heat pump and a gas furnace.
A dual fuel system may come in the form of a packaged unit or a split system with two energy sources.
About the c wire.
2 nest thermostat can only support one of these systems at a time.
As long as outdoor temperatures remain above the.
Dual is better than one.