Air Conditioner output temp not adaquate - Ford Transit USA Forum
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post #1 of 39 (permalink) Old 07-30-2015, 09:31:AM Thread Starter
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Air Conditioner output temp not adaquate

I have a new 2015 For Transit Wagon XLT. When I test the output temp at vent I only get 50 degree air when everything is set on max. I can get the air down to the mid 40's only if the fan is on a max of 2. In all cases it takes an excessive amount of time to get the temp down to those ranges.

I have a Lexus RX 350 and a Cadillac SRX and with in about 2 minutes the vent temperature is in the mid 30's.

I brought the van in and had them service the air conditioner. They did an evac, recharge, and checked for leaks and found none. Although there was a slight improvement it was only a couple of degrees difference. Does anyone have the same problem? What is you vent output temperature? Can any one give me guidance as to what might be wrong?
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post #2 of 39 (permalink) Old 07-30-2015, 10:01:AM
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mdrambler, to assess air conditioning efficiency, one must also know the temperature of the room/vehicle air being taken in (either recirculated inside the vehicle, or the outside air temp. if you turn off the recirculation feature). I don't know what the design goals of vehicle A/C are, but a net drop of 30-40 degrees F. might be all that can be expected between the intake and output temps. IMO.

If the A/C's intake air is 80, for instance, and the design capacity is for a drop of 30, then that nets out at your 50 degree output air (until the intake temp. drops more).

That is the range of my insight into this FWIW, but you might want to assess the intake air temp. next.

2015 XLT 150 Wagon, 3.5EB/3.31LS, 130" WB, low roof, 8-passenger, full trailer tow incl. brake controller, ordered 12/14, delivered 4/20.
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post #3 of 39 (permalink) Old 07-30-2015, 10:14:AM
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It takes a while to cool down in mine as well. Once the plumbing is cooled, it's too cold! Even on a 90º + day I have to cycle it on and off to avoid getting chilled. I have a solid ABS partition though.
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post #4 of 39 (permalink) Old 07-30-2015, 04:40:PM
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Air temperature out of vents around 50F is very normal for air conditioning systems because it helps control relative humidity to a comfortable level.

Air coming out of vents in mid-30s seems unusual to me for two reasons: Air in car would get very dry and at that temperature it would be very easy for evaporator to freeze up. It can be done but would require more controls. Maybe that's why it comes that way in luxury cars.
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post #5 of 39 (permalink) Old 07-30-2015, 05:52:PM
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Make sure there is adequate air flow through the condenser core. If you are travelling at slow speed a lot it would need the fan running to work.
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post #6 of 39 (permalink) Old 07-30-2015, 06:37:PM
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PS mdrambler, you might also calculate the volume of your XLT Wagon vs. the other two cars. If you have a longer and taller model, the volume of air might be triple or more. In my low roof short wheelbase Wagon the A/C works pretty well even if the outside air is 90 and the dark blue Wagon is sitting in the sun. Front and rear units on max. is necessary of course, and set to recirculate the inside air. Definitely burns extra gas though!

2015 XLT 150 Wagon, 3.5EB/3.31LS, 130" WB, low roof, 8-passenger, full trailer tow incl. brake controller, ordered 12/14, delivered 4/20.
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post #7 of 39 (permalink) Old 07-31-2015, 10:31:AM
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Good to know. Mediocre AC was one of the 2 reasons I didn't buy a Grand Caravan. On an 80 degree day it was barely comfortable after 15 minutes of driving. Didn't have a thermometer on me, but outlet temps didn't feel that cool even with lower fan speeds. Hate to see how it would do in 90+ temps.

Sounds like a test drive on a hot day is mandatory before considering a Transit. And, you have an interior so it should stay cooler and be easier to cool once running. I assume you have the rear AC as well?
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post #8 of 39 (permalink) Old 07-31-2015, 11:15:AM
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Mine cools very well, and the rear AC is a big help when getting in it when hot. My only complaint, and my wife just mentioned this too the other day, is the air vents don't direct downward enough without closing off. It like a 6'6" engineer designed them

2015 Transit Van 250 MR 148" EB 3.31LS rear AC. Born on 12/18/2014
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post #9 of 39 (permalink) Old 07-31-2015, 11:26:AM
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Originally Posted by star gazer View Post
Mine cools very well, and the rear AC is a big help when getting in it when hot. My only complaint, and my wife just mentioned this too the other day, is the air vents don't direct downward enough without closing off. It like a 6'6" engineer designed them

star gazer,

Wonder if it is the fact that cold air settles downward, so direct it upwards to cool the entire area?

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6/26/15 At Mobility upfitter.
4/2/15 - Built , 3/24/15 - Window Sticker
12/12/14 - Ordered, 350 HR XLT Wagon, 148 WB, 3.5 EB, 3.31 LS,
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post #10 of 39 (permalink) Old 07-31-2015, 11:36:AM
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star gazer,

Wonder if it is the fact that cold air settles downward, so direct it upwards to cool the entire area?

Semper Fi
Naw -- I think it's more like, the vent designer didn't realize the vents would be placed at such an angle on the dash.

Transit 250 Cargo MR LWB 3.5L w/3.31

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