@Lee_Holmes
Yes, I agree it's a valid question and line of reasoning; however, it doesn't work for this conversation because the IVT you are trying to use doesn't account for the global impact of the actions. There is no acceptable amount of ODSs to be released.
You are also overlooking that it is not only bad for the environment to release ODSs, it's also against the law.
Hell, it's one of the few things almost all countries in the world agree is a bad thing to do.
Freon units stopped being produced 1/1/2010. Part production stopped on 12/31/2019.
The average life of an AC unit is 10-15 years; if you maintain it well, you can extend that a bit.
So, your unit is at least 14 years old. I think it's okay to retrofit or replace it.
Manufacturing a new AC unit is what 5 metric tons of CO2?
Running a new AC unit will be ~2 tons of CO2/year.
A 14-year-old unit that doesn't have the same energy consumption requirements as a new unit I'm sure uses much more than that (depending on the energy source of course)
1 ton of HCFC-22 (R22) has the same impact as 1,810 tons of CO2.
.5kg of R22 leaked ~= 1 ton of CO2, but this is just the warming effect, R22 will also deplate the Ozone.
So you are looking at least 3 tons of CO2/year released by your old busted unit.
So roughly, starting in year 3, it will be more environmentally responsible.
But this is a bad way to look at it; you are going to have to replace the AC unit or retrofit it regardless, so all you are doing is trying to make a case to unnecessarily harm the ozone for a couple of extra years so YOU receive a better value.
#MontrealProtocol #DidTheMath