"AC is for all year usage and not just for warm days. How do you think climate control systems work?"
While checking out the wet floor, I asked DiL if she had been using the aircon since it has been 'serviced' - I'm not sure what was wrong in the first place - except that it wasn't working; the garage she used is a reputable independent set-up. She said 'yes' and that the garage had recommended that she kept it switched on all the while - I'm not sure if that was for a short period after the work had been done, or if that was indefinitely.
I have heard of keeping the aircon switched on because it 'keeps the seals lubricated' (?), though I tended to switch mine off if it wasn't needed as it used more fuel. Maybe aircon systems are more efficient these days?
I imagine that DiL had only recently got round to doing something about the aircon because she's so bloomin' busy.
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