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In summer I just leave the HVAC in Auto with the AC on. Set temperature at 23 C, and everything seems to work just fine without ever having to touch the buttons.
When it cooled down a bit, all I changed was the temperature setting. I was wearing heavier clothes so it was more comfortable in the car with the temperature set at 21 or 22 C. But that was it.
Then when temperatures got down around freezing, Auto mode seemed to get into trouble. I find I have to take the AC out of Auto or the front window can fog up. I still leave it in ECO but switch the air outlet to feet and windshield. You can push the defrost button but that puts electric heat on the back window and rear view mirrors (which is not needed), and the fan sounds like a jet plane taking off. I have no time for that mode at all. Perhaps during a really cold warm up it is what you have to do, but after that I have to hear myself think!
In this feet/windshield mode the fan speed seems to be manual, and in fact everything seems to be manual, although I guess the temperature setting is still automatic.
Have you found a better way to run this thing in cold weather? I was hoping for something a little more automatic.
I leave the fan off most of the time. Short bursts of heat. I find if the fan is left on then it actually feels cooler.
I will use the defrost button and it takes care of things quickly so I don't leave it on. The fan does wind up in this mode. I don't think this button (middle) activates the rear window and heated mirrors. That button is on the right of the front window defrost button.
I actually prefer manually controlling things. I find (even with AC) that any automatic stuff dries the cabin air too much for my liking.
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I try to use the lowest fan speed setting unless it's over a 95 degree summer day. Then 2 or 3 graphs of fan speed is needed. I never use the auto settings as on a hot day the fan seems to blow me outta the car. lol
On cold days I set the temp to 85 for a mile or so then back to 83 then 77 once the cabin has warmed up. I usually keep the fan to low for heat as I rather the engine to heat up more quickly.
During the summer I run the temp around 82 to 83 degrees. That sounds hot to most but at 5% humidity it's rather comfortable. Lets say it feels more like a upper 70's temperature.
I leave mine in Auto all of the time. I also leave the AC on as it prevents the windows from fogging up.
I did that too, until it got cold. I think somewhere just above freezing the AC compressor will not run anymore. That is to protect it from freeze up. When the AC is not removing moisture from the air, and the windshield is cold, that is when it fogs up. In a real dry climate it may not be a problem.
If the compressor on the TCH works the same as the Prius, it will only come on when temperature or moisture calls for it to run. Since it is electrically driven and variable speed, it will only provide enough cool dry air as is required by the system.
If the compressor on the TCH works the same as the Prius, it will only come on when temperature or moisture calls for it to run. Since it is electrically driven and variable speed, it will only provide enough cool dry air as is required by the system.
Unfortuanely all makes and years of vehicles have to follow the same laws of physics. Water freezes at 0 C or 32 F. AC just can't operate at or below that temp or you risk freeze up and damage to the evaporator coil.
The AC for sure is great for removing humidity. I bought a step up central AC system when we moved to new mexico. It includes a humidity sensor plus a thermostat in the living room and another inside the air handler. The inside humidity stays rather constant at 27% to 28%. It's good to know the TCH has a AC that can also help regulate the humidity down for a improved comfort level.
It's good to know the TCH has a AC that can also help regulate the humidity down for a improved comfort level.
All AC systems remove moisture and lower humidity. That is one of the main ways they help to make you feel cooler. The moisture collects on the evaporator coil, and gets drained off from there. That moisture is what you can't afford to freeze. The same moisture can also be the root cause of HVAC bad smells in the car. If it sits too long mold can form.
Unfortuanely all makes and years of vehicles have to follow the same laws of physics. Water freezes at 0 C or 32 F. AC just can't operate at or below that temp or you risk freeze up and damage to the evaporator coil.
The AC has a temperature limit on the Toyota that will prevent the compressor from running below a specific outside temperature. I can't remember what that temp is, but I believe it is somewhere between 32 degrees and 37 degrees F.
The AC has a temperature limit on the Toyota that will prevent the compressor from running below a specific outside temperature. I can't remember what that temp is, but I believe it is somewhere between 32 degrees and 37 degrees F.
Yes, and I suspect when the AC can no longer run that is when the Auto mode no longer seems to keep the windshield from fogging. I would have thought that Toyota would have built in a strategy to feed warm air to the windshield while still in the Auto mode. It does not seem to have the smarts to do that.
I understand A/C select on Auto is a configurable item. See p502 of the manual. As I understand it, if you have NAV you can change this yourself. Otherwise, the dealer will have to do it for you.
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