Dual fuel pairs a heat pump with your gas or propane furnace, so the house leans on the one that costs less to run most of the winter and only fires the furnace when it turns bitter cold. We check that the two match up, then put the whole plan in writing before you approve it.
Here is the idea in plain terms. A heat pump handles your cooling in summer and most of your heating in winter, because it costs less to run. When it gets cold enough that the heat pump has to work too hard, the thermostat quietly hands off to the gas or propane furnace. You do not flip anything. It just picks the right one.
That handoff point gets set for your home and your equipment, so the system uses the heat pump as long as it makes sense and only leans on the furnace when it really needs to. You feel steady heat the whole time.
We start by looking at your gas or propane furnace, its venting and airflow, to see if it can stay or needs replacing. If it needs replacing, that goes in the scope so there is no surprise. If your home runs on oil, we only add the heat pump and leave the oil furnace to your oil provider. We do not do duct work.
The proposed heat pump, indoor coil and settings must be compatible with the existing furnace. The written scope identifies the equipment and connection work.
The natural-gas or propane furnace condition, venting and airflow help determine whether it can remain or needs a separately approved replacement.
The proposed heat pump, coil and settings are checked for compatibility with the furnace before ordering.
The written scope names the equipment, the settings, the connection work and the sequence.
Startup readings and the switchover setting are recorded and explained with you at the thermostat.
We serve homeowners in Germantown, Gaithersburg and Montgomery Village. Call or text with the full service address and the work you need so we can confirm the request.
We are local to Montgomery County, so we know the homes and the winters here.
Sometimes. The natural-gas or propane furnace condition, approved coil match, airflow and settings must be assessed. Oil-heated homes have a separate limited scope: a compatible heat-pump addition, with oil-furnace service handled by your oil provider.
It is the outdoor temperature where the system stops using the heat pump and switches to the furnace. We set it for your home so you get the lower-cost heat as long as it makes sense.
No. The thermostat has to be able to run both the heat pump and the furnace and hand off between them. We make sure yours can, or include one that does.
Not always. It depends on the equipment, the weather and your electric and fuel rates. We will talk through whether it is the right fit for your home instead of promising a number.
Equipment-specific procedures follow the manufacturer instructions.
Tell us what your heating or cooling system is doing. Include the service address and any useful photos taken from a safe distance.
Clear answers. Clear scope.
Know what you are approving.
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