Temperature range to operate HVAC equipment

[bcawhern1 (Brian Cawhern, CMI®)]

@bcawhern1

I have come across more than one “owner’s user manual” that has recommended temperature ranges that should not be exceed that roughly align with NACHI SoP. With newer units, I have yet to come across these owner recommendations.

I am responding to my own post, lol. @ccurrins do you remember this?

Wording for not testing AC in cold temperatures

http://www.nachi.org/forum/f20/testing-ac-winter-46326/index2.html#post602158 CARRIER -page 3 Do Not Operate Below 55 F Your outdoor unit is not designed to operate when outdoor temperatures are lower than 55_F without modification. If operation below this temperature is required, consult your Carrier dealer. ColdPoint -page2 CNC air conditioners are designed to provide comfort cooling at outside temperatures above 60 degrees. Operating the air conditioner below 60 deg…