Stop in for a cup of coffee

It's the central AC in the house. I got it thawed out and it looks like the air filter was mega dirty and was impeding airflow so I replaced it. I just restarted the AC and will see if it freezes up again.

The refrigerant level was my first thought since it was probably set by the builder when the house was constructed and they never get it right. If it does freeze up again, I will get an HVAC service out to check everything.