I'm replacing my central A/C. Most contractors are recommending higher-end systems, which do interest me (to save energy, and have better dehumidification - we're in MA where it's often not too hot, but humid).
Anyway - I like my current (18 yr old York) system, it has virtually NO electronics. Thermostat is an old mechanical Honeywell. The only part that fails (every 5 years or so) is the one piece of 'electronics' in it - the delay timer that keeps it from turning back on right after it's turned off. Other than this, the system has NEVER failed.
My FHA furnace is 45 years old, and also has no electronics (it's not direct vent), it too, has never failed.
What I like about my A/C and Furnace is that they don't fail. I see my neighbors having (relatively) a lot of problems with their furnaces because they have direct-vent and electronics - So periodically a circuit board, electronic thermostat, or sensor fails, bringing down the whole system until a part can be procured from the manufacturer, typically a few -days- later.....
So, as I contemplate replacing my system - How trustworthy are the electronics in modern high-end A/C systems??? ( for example - I'm looking at Bryant Evolution)
Are they designed for 'graceful degradation' (I.e., a failure doesn't bring the system to a screetching halt)?
How often do these electronics fail???