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enter image description hereHere is the idea. I would like to have my heat pump trunk tied to my new pellet furnace for effective heating throughout the house in the winter with a fraction of the energy usage. And then close off the pellet furnace in the summer to allow the heat pump to cool the home using the same existing duct work.

For all you renewable folks thinking electricity and heat pumps are the way to go. The reason to do this: Winter = clouds/rain/snow/fog for weeks at a time = solar does not work = heat pump pulling 2kw/hr is not attainable.

Would this kind of setup work? Specifically I am looking at using two manual dampers to switch between the two blowers. Each blower has its own return (I did not include in the drawing)

The pellet furnace is a Traeger GBU-130 (has a blower mounted on the top) the heat pump is a Ducted mini split, outside condenser and indoor ducted blower/evaporator.

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    That sounds awesome and welcome to Home Improvement! Please take the tour. You'll note that this is a QUESTION and answer board. So far, you've made some statements. Please edit this to actually ask us a question, otherwise this will be closed.
    – FreeMan
    Feb 8 at 12:04
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    I’m voting to close this question because it isn't a question.
    – FreeMan
    Feb 8 at 12:04
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    You may want to draw a diagram of what you're planning, and add the model numbers of the pellet stove and heat pump. Use the Edit link under your question to add the model numbers, and the Mountain icon to add the drawing. Feb 8 at 13:27
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    Where is makeup air coming from? What about the combustion intake vs exhaust for the pellet stove? There are two different air loops. Why not use the heat pump for heating most of the time? Feb 8 at 23:40
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    Unless the pellets are basically free, you are likely not saving money (or the environment) by burning pellets to create heat. A good heat pump will get you twice as much (or more!) heat out as you put energy in, so even if your electricity cost is relatively high it still may be cost-effective. And while your one little house burning pellets may not seem like much, that's probably less environmentally friendly than the electricity generation, unless it is burning coal. (Natural gas burns relatively clean, wind/solar/hydro/nuke even better). Feb 9 at 2:51

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I do not see any reason why this manual A-B switch for the ducts would not work. If return air is fed to both the heat pump AC and the pellet stove, then you're basically toggling one HVAC source or the other.

You could put switches on the dampers so the thermostat lines to each HVAC device gets broken, so the device doesn't get turned on when its damper is closed. (You may be able to get dampers with the cutout switch built in.)

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