indoor CO2 goes from like 500 ppm to 950 ppm. It's awful. I avoid using the natural gas oven and range when I can. I intend to install an outside air exchanger,

indoor CO2 goes from like 500 ppm to 950 ppm. It's awful. I avoid using the natural gas oven and range when I can. I intend to install an outside air exchanger, but haven't got around to it.