On Tuesday, May 14, 2019 at 5:29:51 PM UTC-4, Dan wrote:
My situation even tho it would appear to be short cycling isn't quite accurate. My issue is run time. Typically as if now in AZ it's 90 pit and run time is 5 minutes and off time 17. So this truly by definition wouldn't be short cycling would it?. Anyways I've known for years system is indeed oversized and tried to compensate with my lux swing settings. Usually kept set at 2 with set at 77. It's just becoming uncofortable though as temps per display shows 78 when it comes on even though should be 77.50. Anyways today I'm trying something new, set temp for 76 with a 6 swing. Run time now is 17 minutes with off being around 15. Air feels much more comfortable yet worried now on $$ as times are tough. Last thing I want is a more $$. SRP bill shows $170 this month estimate thus far... That's with my normal 77 with 2 swing. Anyways I wanted to ask you guys how would you best handle this issue. Short cycling doesn't quite point to my issue I suppose to the letter. How old you guys handle this?.. not enough funds for new AC unit and not wanting crazy bulls either, but don't want to feel like I'm in a fireplace either. Thank you all for any ideas or suggestions on this. Bless.

Why did you go from 77 with a 2 deg swing, to 76 with a 6 deg swing?
Why not pick something in between, like 3? I couldn't live with a 6 deg
swing. Also I don't understand if it was running 5 mins on, 17 off how
it could go to running 17 on and 15 off? That means it went from running
about 23% of the time to running 53% of the time? Something doesn't add
up, but if it's running that much, I see why you're concerned about
power usage. I'd settle for a compromise where it runs a little longer,
but still keeps the temp within an acceptable range. The disadvantage
to short cycling is it will use somewhat more energy and it's additional
wear on the compressor, fan etc with excessive starts, but I wouldn't
obsess over it either. It may not really affect the compressor life
that much, if at all. You don't say how old this system is, what the
operating costs are, etc. If it's old and inefficient, they payback
for a new right sized system might not be that long in AZ.