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Oxford study proves heat pumps triumph over fossil fuels in the cold
(www.nationalobserver.com)
This is a most excellent place for technology news and articles.
There are tons of non electronic gas heaters. I have one in my basement just for power outages so we can stay alive in the winter if we don't have power. But I do think for majority of heating and cooling I would love to rip out my central furnace and replace with heat pumps but the cost is too great ATM. I have two heat pumps now, one in my garage and one in my top floor where the furnace could never reach.
There are significant tax credits and rebates to be had: https://www.hvac.com/expert-advice/inflation-reduction-act-heat-pump-rebates/