Cost probably explains a good chunk of it. Regardless of why it's more expensive. When our house was built in 2012, I looked into getting a heat pump. But it

Cost probably explains a good chunk of it. Regardless of why it's more expensive. When our house was built in 2012, I looked into getting a heat pump. But it was a couple grand more than a high efficiency furnace with an air conditioner. Given that natural gas remains inexpensive compared to electricity, it wasn't an obvious win financially. And if we're being honest, for average people the hit to the pocketbook is going to take higher priority than considerations for the environment.