Hvac Regulations 2024. The minimum seer rating and. The new rules will come into effect in 2024 for air cleaners and 2026 for room air conditioners.
In 2023, the minimum seer rating increased from 13 to 14 in northern states and 14 and 15 in southern states. The new rules will come into effect in 2024 for air cleaners and 2026 for room air conditioners.