over the last two days, we've experienced very long periods of low voltage from our local electric utility. it may have something to do with humidity over 90%, constant rain.
apart from total blackouts and occasional brownouts, these cause a repeated dimming of lights, something akin to disco lights (sorry) and is disturbing to say the least, worrysome due to the effect on electric motors and the heatpump compressors. the repeated (spaced out in seconds and sometimes just one minute apart) low voltage conditions last for hours.
what can a regular homeowner do? what can I ask my HVAC contractor? the system is a Trane XL19i and the fear of course is motor/compressors overheating. a total blackout is not a problem as that's handled by the digital thermo but it does nothing for voltage drops.