In 2025, your HVAC system will switch to environmentally friendlier A2L refrigerants, such as R-454B and R-32, from R-410A. These are mildly flammable but will reduce global warming impact. This transition won't affect your comfort, but your system will need to be compatible with these new refrigerants. It's all part of a move towards a more sustainable future without compromising your indoor climate control.