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the claim

Natural gas appliances can produce carbon monoxide through incomplete combustion.

the verdict
INSUFFICIENT LEANING
Recorded sources
7 sources for · 0 against

Counts group repeated records of the same source within each side. They do not measure evidence strength or source independence.

Is it true that natural gas appliances can produce carbon monoxide through incomplete combustion?

Unclear. Several peer-reviewed reviews and studies link incomplete combustion of natural gas in household appliances to carbon monoxide or other polluting emissions, but each covers only part of the claim: some address CO generally, some address appliances without naming CO, and none directly measures CO from a natural gas appliance.

Verdict: PARTIAL LEAN · 7 sources for, 0 against · Last checked

The private library was unavailable for some searches in this check. Missing library results are not evidence against the claim.

Evidence for · 7
Combustion
Get citation
Combustion. (n.d.). en.wikipedia.org. https://en.wikipedia.org/wiki/Combustion

See more details
More for · 6
Toxic Air Contaminant Emissions from Residential and Commercial Fossil Gas Appliances: A Systematic Review.
2026
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E, T., JK, D., DR, M., & M, D. (2026). Toxic Air Contaminant Emissions from Residential and Commercial Fossil Gas Appliances: A Systematic Review.. doi.org. https://doi.org/10.1007/s40572-026-00562-6

Characterising Carbon Monoxide Household Exposure and Health Impacts in High- and Middle-Income Countries-A Rapid Literature Review, 2010-2024.
2025
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SV, W., R, C., FB, P., B, B., & H, C. (2025). Characterising Carbon Monoxide Household Exposure and Health Impacts in High- and Middle-Income Countries-A Rapid Literature Review, 2010-2024.. doi.org. https://doi.org/10.3390/ijerph22010110

Effect of Adding Combustion Air on Emission in a Diesel Dual-Fuel Engine with Crude Palm Oil Biodiesel Compressed Natural Gas Fuels
2022
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Yuvenda, D., Sudarmanta, B., Wahjudi, A., & Hirowati, R. A. (2022). Effect of Adding Combustion Air on Emission in a Diesel Dual-Fuel Engine with Crude Palm Oil Biodiesel Compressed Natural Gas Fuels. doi.org. https://doi.org/10.14710/ijred.2022.41275

Investigation of the Effects of Hydrogen-Enriched Natural Gas Blends and Pure Hydrogen on the Performance of a Domestic Condensing Boiler
2023
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Yaici, W. & Entchev, E. (2023). Investigation of the Effects of Hydrogen-Enriched Natural Gas Blends and Pure Hydrogen on the Performance of a Domestic Condensing Boiler. doi.org. https://doi.org/10.1115/es2023-106980

Climate Impact Comparison of Electric and Gas‐Powered End‐User Appliances
2022
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Dietrich, F., Chen, J., Shekhar, A., Lober, S., Krämer, K., Leggett, G., Veen, C. v. d., Velzeboer, I., Gon, H. D. v. d., & Röckmann, T. (2022). Climate Impact Comparison of Electric and Gas‐Powered End‐User Appliances. doi.org. https://doi.org/10.1029/2022EF002877

Sources of fine organic aerosol. 5. Natural gas home appliances
1993
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F., R. W., M., H. L., & A., M. M. (1993). Sources of fine organic aerosol. 5. Natural gas home appliances. authors.library.caltech.edu. https://authors.library.caltech.edu/records/rknnx-k7n02

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