Your Vents Blow Room Temperature Air:
This is the first sign that you will need a recharge. This could also mean that you need a new thermostat, but over time you will notice that the cool air you initially felt coming out of your vent will decrease over time. As your AC runs out of refrigerant, your air temperature will rise in your home.
Your Unit Is Frozen:
Even if you live in Arendelle, you don't want to be frozen! We suggest that you "let us go" check out your unit. One of the signs that you have a leak is seeing a buildup of frost/ice on the unit. if you have ever looked into the front of a window unit, you'll see that everything seems frosted over. That is because this is where the refrigerant flows through, the refrigerant will literally freeze nearly everything it touches. The pipes inside are built to withstand the refrigerant and bring it around the system, but if there is a leak you'll be able to see frost all over your system.
You Don't Regularly Maintain Your System:
It's recommended to have your unit inspected yearly to make sure everything is working properly. A lot of homeowners are skeptical on recharges, but if your system is regularly checked a good HVAC specialist can detect and repair a leak and if necessary recharge your system.