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The gas furnace supports dual fuel that work together, basically from my understanding the heat pump will work better in a spring/fall application and the gas furnace is more for dead of winter temps.

Hello,

I had a new furnace installed about 3 months ago, it's a 96% efficient EL296XV Series gas furnace. I have what I believe is a York heat pump LX Series YHJD. I have a lennox icomfort...