“Forcing customers to replace an entire system just because the cheapest component failed might be really profitable, I have no idea…”
The wall tablet on an Advantage Air system died about 6 months past warranty. The company refused to sell a replacement tablet and quoted $1697 for a new controller, tablet and sensors. A 10-year-old Samsung tablet runs the app fine once you patch out the check on the device model. The only thing stopping a cheap fix was a few lines of code Advantage Air wrote on purpose.