this post was submitted on 30 Jul 2025
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Most refrigerants from ~25 years ago have long since been banned, and the units themselves may not be suitable for use with modern ones.
Unless you’re referring to an evaporative-style cooler, but they’re practically useless in exceptionally hot weather (anything north of like ~33 degrees Celsius).
It doesn’t matter if the refrigerant is banned.
A properly installed system is hermetically sealed. All the refrigerant it will ever need was put in the day it was installed.
I still regularly service 20+ year old R22 systems that are still trucking along just fine. And just because a refrigerant is banned doesn’t mean you cannot get it. I just bought a new tank of R-22 a few weeks ago. It was ridiculously expensive because they don’t make it anymore, but it’s perfectly legal to buy. And there are drop in replacements if a system does get damaged and develops a leak.
A week ago I retrofitted my neighbors R22 unit to 407C because the lawn guys hit the suction line with an edger. Cost my neighbor a thousand dollars to do it, but still cheaper than a new unit. He plans on selling the house in 5 years, so the electricity savings from a new unit don’t interest him, and his current unit is perfectly serviceable.
Most of these companies that say you “need” a new unit, are just out to make a buck. Unless the unit is physically destroyed or you plan to keep the house for 20+ years for the energy savings, there is little reason to get a new unit. Don’t get scammed.
A new AC here costs 400$...
For a central air split system?
Cause that’s what most American homes have.
No, I don't have that sort of fancy nonsense
Does everyone in your household spend 100% of their time in the same two metre by two metre square
No, the rest of is get fucked.