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How good is the A/C?


Doug0716
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Hey Doug,

 

I live in the Central Valley in California where it gets above 100 degrees in the summer but not as humid as Texas.  I think the A/C is terrific and the fan very strong.  I keep the A/C on Auto and the temperature set anywhere between 72 and 74 and I am very comfortable driving around in the heat.  Even if the car is parked outside in the sun for a while, the A/C cools the interior very quickly.

 

You should test drive the Energi on a hot day to see just how well the A/C works.

 

You'll be a happy Energi owner soon!

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The AC works great to cool the vehicle.

 

Others have complained, and there is a TSB for it, that they developed a mildew smell in the vents. I've found that switching AC off and over to vent warm outside air a minute or so before arriving at my destination warms up the ducts and it doesn't develop the condensation mildew smell.

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  • 1 year later...

Does anyone else have a significant difference in temperature between 73 and 72 degrees? Seems like all the other 1-degree adjustments between 65 and 80 are incremental, but changing from 73 to 72 causes the A/C in my car to really kick in much cooler with a higher fan speed even at the lowest fan setting (whereas, for example, 74 to 73 and 72 to 71 are just small changes in A/C temperature).

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Does anyone else have a significant difference in temperature between 73 and 72 degrees? Seems like all the other 1-degree adjustments between 65 and 80 are incremental, but changing from 73 to 72 causes the A/C in my car to really kick in much cooler with a higher fan speed even at the lowest fan setting (whereas, for example, 74 to 73 and 72 to 71 are just small changes in A/C temperature).

There does seem to be a point where the car goes from blowing ice cold air to warm air. When running only in EV this tipping point causes the electric heat to turn on, even in the summer. When using the ICE you'll just notice an air temp difference. We've found on road trips that the cabin is either too hot or too cold and almost never is it just right. The exact HVAC temperature setting where this happens seems to vary based on interior temp, exterior temp, sunlight, etc.

Edited by Hybridbear
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Blastphemy this could vary wildly with ambient and current interior temp. 

 

For example the noticeable change in the temp and amount of air being blow by the AC when changing from 72 to 71 will be less than when changing from 73 to 72 if the ac is already near or at it's 'bursting' to reach a sustainable temp force.  The same may be true of the difference between 74 to 73 and 73 to 72 if 73 wasn't far enough from a sustaining draw that it triggered a 'burst.'

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Hi Blastphemy,

 

Yes, I also detect a noticeable difference in temperatures between 72 and 73, but they are also the 2 temperatures I use most.  On extremely hot days I have to set my AC at 72 and then the car cools off nicely.  If I get too cold I bump the temperature up to 73 and the difference is significant to me.  If I start with the temp set at 73 I will decrease it to 72 in order to cool the car off quicker.  I always have the left vent and the middle left vent blowing on me.  I can definitely feel the difference between 72 and 73 when the air is blowing directly on me.

 

I could be totally crazy but I agree with your perception!  :)

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I usually keep mine at 74 and when it starts getting cold I bump it to 75 and it's a drastic difference.  I think the system compensates for an adjustment when it's at the "max setting" and you adjust it away (ie go warmer when it's cooling). Also sometimes it seems that the car gets a bit warmer than other times when it's still set at 74 but I think it's partially humidity and direct sunlight (I wonder if any of it is the battery cooling and letting off heat into the cabin?)

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The HVB fan pulls air from the cabin but does not vent into the cabin. See this post: http://www.fordfusionenergiforum.com/topic/1683-obd-ii-data-for-hvb/page-11?do=findComment&comment=21758

That post appears to be related to the fans during charging?

 

Interesting design, rather different than the C-Max (where of course we don't have a trunk).

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That post appears to be related to the fans during charging?

 

Interesting design, rather different than the C-Max (where of course we don't have a trunk).

One fan is used during charging, one during driving. None of the fans vent into the cabin in the Fusion. I'm not sure about the routing of the ducts in the C-Max.

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One fan is used during charging, one during driving. None of the fans vent into the cabin in the Fusion. I'm not sure about the routing of the ducts in the C-Max.

I seem to recall a thread that indicates they are ducted into the doors, if I remember correctly. That doesn't make a lot of sense to me, but I've not not looked below the cargo area on my Energi.

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Blastphemy this could vary wildly with ambient and current interior temp. 

 

For example the noticeable change in the temp and amount of air being blow by the AC when changing from 72 to 71 will be less than when changing from 73 to 72 if the ac is already near or at it's 'bursting' to reach a sustainable temp force.  The same may be true of the difference between 74 to 73 and 73 to 72 if 73 wasn't far enough from a sustaining draw that it triggered a 'burst.'

 

In my Fusion Energi it doesn't make any difference what the ambient and current interior temperature is unless it's a 90+ degree day. Most times, if the A/C is set to 73, the cooling is reasonable but not quite adequate. Change it to 72 and suddenly I'm in the Arctic. There's no middle ground between 72 and 73; it's either very cold at 72 or not quite cold enough at 73.

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The fan during charging vents in to the cabin.  It's behind the passenger side rear seat.

Is this the grate you see when the rear seats are folded down?

 

Where does it vent when driving? There are inlet vents over the rear wheels, where does it exhaust?

When driving the Fusion Energi takes cabin air & vents it out into the trunk area. When charging the car can either pull air from outside the car or from inside the trunk & it is vented into the cabin. This is for the Fusion Energi. The C-Max Energi doesn't have a trunk so its system will be different.

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