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I just bought a new Honda Pilot Touring and its AC output is pathetic. Its internal AC vent temperature doesn't go below 58 degrees making the actual output temperature around 68 degrees.
I think I, and others, are confused where you measured 58F and where 68F. As for vent temps, Honda doesn't state and you won't get a Lemon Law remedy on vent temps you are "expecting". And are you saying the system can't achieve and maintain a reasonable (70F) cabin SET point within 15 to 20 minutes of driving?

What are the vent temps if you adjust the set point to LO, move the fan speed to 2 or 3 bars, and driving at least 25mph?

Variable capacity compressors will run flat out (100%) for large temp differences, like starting a car on hot and cold days, then modulate downward, and adjust the fan speed down, and likely vent temps upwards (not evyerone likes a 45F draft on their knuckles) as the system nears its set point (whatever you set it fro on the dash). Many Toyota's--like my '08 Highlander-- have had these compressors since the mid-2000's, and they work fine.

As for towing, well, it states in the Owner's manual, in the brochures, on the website, top Googling results, state the towing ratings for FWD and AWD. I don't tow, and knew before purchase 3500lb was the FWD limit.
 
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Your pic shows RECIRC is OFF.
Good catch!

For most AC systems (including this Pilot), at high fan speeds and high humidity, you can expect about 30F differential, between ingest air temp and vent temp. If you leave the system in FRESH, then it just keeps ingesting 100F+ humid air (many parts of TX), where the duct temps might not ever get much below 70F.

In RECIRC (mine defaults to this), as the cabin temp drops, this also lowers the ingest temp AND humidity, where the system dehumidifes the cabin, where 40F differential is possible. Lower fan speeds also increase the differential, where a fixed capacity compressor will just cycle to keep from freezing, and a variable capacity compressor will throttle down to to keep the evap from freezing.

I also noticed from the service manual that the climate system is designed to raise vent temp as the system approaches its set temp, and maintains it about 5 degrees below set temp (in AC mode) to increase comfort. It uses a combo of compressor cycling (or throttling), blower speed and blend door to achieve it.
 
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