I have a gas powered boiler that heats my home and makes my hot water. Based on my gas bill, it’s incredibly efficient. But it still emits co2. Is there a “home

I have a gas powered boiler that heats my home and makes my hot water. Based on my gas bill, it’s incredibly efficient. But it still emits co2. Is there a “home scale” scrubber I can plug into its exhaust port? Can I do my own DAC?