Get advice on recognizing warning symptoms such as special noises or smells coming from an air conditioner; early detection

https://telegra.ph/Exploring-Smart-Thermostats-and-Their-Compatibility-with-Various-Units-11-12

Get suggestions on recognizing caution indicators akin to peculiar noises or smells coming from an air conditioner; early detection ends in well timed interventions preventing added break down the road!