Quote:
Originally Posted by jrref
The new R454B refrigerant is no big deal. Yes, it's slightly flamable and yes there was a shortage of tanks for a while but when they installed my new system, I didn't see any difference in the install and handling of the refrigerant from 410A. The only thing you will see is in the new units, there is a refrigerant sensor in the evaporator area that will shut down the system if it detects a leak. With all other refrigerants, if you had a small leak and you were going to replace your system or change the coil, they would charge up the system so you had A/C until they came back. HVAC companies won't be able to do this anymore since if they charged the system, the leak sensor would just shut it down.
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You make a good point. But if the repair is far less expensive than replacing the entire system then it might be a preferred option. If the 410A componenty is no longer available, then there will only be one choice.