Two reasons. One, yes they have gotten more efficient, and depending on your local climate, are now possibly the most efficient method for heating your home. T

Two reasons. One, yes they have gotten more efficient, and depending on your local climate, are now possibly the most efficient method for heating your home. Two, the switch to renewable energy is resulting in a push for the “electrification of everything”. Getting home appliances that previously burned fossil fuels onto the electric grid enables emissions-free methods of power generation to be used in the future, even if they are not in use yet. And even with fossil-fuel burning power plants, they have an economy of scale much greater than the furnace in your home. So using electricity generated at a fossil-fuel burning power plant to power your heat pump will still result in less emissions than burning that fuel for heat directly in your home.