Versions of Utah Code > Title 15A > Chapter 6 > Part 1 - Nitrogen Oxide Emission Limits for Natural Gas-fired Water Heaters on LawServer 2023 Utah Code > Title 15A > Chapter 6 > Part 1 – Nitrogen Oxide Emission Limits for Natural Gas-fired Water Heaters 2022 Utah Code > Title 15A > Chapter 6 > Part 1 – Nitrogen Oxide Emission Limits for Natural Gas-fired Water Heaters 2020 Utah Code > Title 15A > Chapter 6 > Part 1 – Nitrogen Oxide Emission Limits for Natural Gas-fired Water Heaters 2018 Utah Code > Title 15A > Chapter 6 > Part 1 – Nitrogen Oxide Emission Limits for Natural Gas-fired Water Heaters 2016 Utah Code > Title 15A > Chapter 6 > Part 1 – Nitrogen Oxide Emission Limits for Natural Gas-fired Water Heaters
