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You’re just flatly wrong, the spec page for the humdrum mini split I pulled up first has a max outdoor max ambient operating temp of 52.78c (127f)
My point in bringing up refrigerant temps was to get you to look into it. Heat exchangers are more effective than you believe. No one is trying to convince you that these units defy the laws of physics.
Airvpn, then use their advanced config to create a 443 tcp tunnel out to a single server. Then use that server’s IP in your OpenVPN config file. Route all traffic including dns inside the tunnel.
Traffic will look like all other web traffic - encrypted on standard web ports. You won’t even need to do a DNS lookup to start with and airvpn uses generic rDNS so it’s not super easy to figure out from their perspective.