2024 16 CFR 305.4 – Description of furnaces and central air conditioners

2023 16 CFR 305.4 – Description of furnaces and central air conditioners

2022 16 CFR 305.4 – Description of furnaces and central air conditioners

2021 16 CFR 305.4 – Description of furnaces and central air conditioners

2020 16 CFR 305.4 – Description of furnaces and central air conditioners

2019 16 CFR 305.4 – Prohibited acts

2016 16 CFR 305.4 – Prohibited acts

2015 16 CFR 305.4 – Prohibited acts

2014 16 CFR 305.4 – Prohibited acts

2010 16 CFR 305.4 – Prohibited acts