Any warning sign that repeats, gets louder, or creates smell, smoke, leak, or ice deserves prompt attention

https://acrepairtips104.readspirex.com/posts/hvac-emergency-signs-every-winter-haven-homeowner-should-know

Any warning sign that repeats, gets louder, or creates smell, smoke, leak, or ice deserves prompt attention. Turn the system off if needed and contact a licensed HVAC expert.