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Best to leave AC on all the time.....?
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Dannyson
 


Member Since: 15 Oct 2014
Location: Newquay, Cornwall
Posts: 684

England 
Best to leave AC on all the time.....?

Having read numerous articles whether to switch AC on and off as and when needed - it seems leaving it on all the time is the best option - saving the o rings and such like 'drying' out thereby prolonging the life of the compressor and such.....?

I never, ever use the Auto climate control - not sure the point of it - just blasts air out in all the places I don't want it! - especially when starting up..... its difficult enough getting warm air into the cabin (as has been discussed in other threads)..... so I have found setting at 23 and leaving the AC on best for me to date. Having to set it at 23 or above is a nonsense though - my previous Toyota LC would warm up well enough from 18/19.... Rolling Eyes

Any thoughts?
 2016MY Discovery HSE - Black
2009MY Toyota Land Cruiser (Lc4) - Black 
 
Post #18859893rd Dec 2017 12:19 am
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kajtzu
 


Member Since: 11 Aug 2017
Location: Helsinki
Posts: 1033

Finland 2005 Discovery 3 4.4 V8 HSE Auto Cairns BlueDiscovery 3

I’ve always had AC on, if they’ve had it, in all vehicles that I’ve owned or driven - from driving in the snow, in the summer, in the desert to driving in tropics or sub-tropics, etc. Have not noticed any adverse effects.

That some manufacturers have crap “auto” settings is their fault and not the technology’s Thumbs Up I think part of the problem is where they put the cabin temperature sensor.

Comparing the D3 MY05 and the last three V70s (MY00, MY10, MY14) I’ve driven the Swedes know for sure how to make a good automatic setting.
  
Post #18859933rd Dec 2017 12:38 am
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garrycol
 


Member Since: 06 Dec 2010
Location: Canberra
Posts: 612

Australia 

Just put climate control on with your required temp setting - leave and forget.

Climate control works great just takes a while to bring the entire cabin to the required temp.

I live in an area where it gets down to -6 in winter and up to 45 in summer and my climate control sits on 19 all year around - the only changes I make is to change from fresh air to recirc occasionally when outside temps are at an extreme or stuck in traffic with lots of fumes outside.

Garry
  
Post #18860113rd Dec 2017 2:07 am
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lynalldiscovery
 


Member Since: 22 Dec 2009
Location: Maidstone
Posts: 4349

United Kingdom 2006 Discovery 3 TDV6 Metropolis LE Auto Bonatti GreyDiscovery 3

Auto on all the time, it can be annoying at times, especially when you first get in and its damp outside and as the engine is cold it blows no air at all so the screen starts to mist up!

My wife has left the a/c on in every car she has ever owned going back the best part of 20 years
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Post #18860143rd Dec 2017 4:01 am
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Mr.Tom
 


Member Since: 01 Jun 2014
Location: St Neots
Posts: 1625

United Kingdom 2016 Discovery 4 3.0 SDV6 Landmark LE Auto Waitomo GreyDiscovery 4

I just leave it on auto a/c all the time. To help demist if needed, I turn on the heated screens and press the max button, which directs it all at the screen too for a bit.
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Post #18860183rd Dec 2017 6:53 am
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NickJ
 


Member Since: 11 Oct 2010
Location: there's no f in point
Posts: 1983

2006 Discovery 3 TDV6 S Auto Zambezi SilverDiscovery 3

The AC will come on in auto only when needed to cool the car if hot so leaving on is probably the best
  
Post #18860253rd Dec 2017 8:48 am
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kajtzu
 


Member Since: 11 Aug 2017
Location: Helsinki
Posts: 1033

Finland 2005 Discovery 3 4.4 V8 HSE Auto Cairns BlueDiscovery 3

Mr.Tom wrote:
I just leave it on auto a/c all the time. To help demist if needed, I turn on the heated screens and press the max button, which directs it all at the screen too for a bit.


This. I had never had a heated screen before the D3 but having used it for a while I think it is one of the best convenience features of all time. On the Volvo it conflicts (at least used to) with a bunch of technology packs (pedestrian detectors, lane warnings, intelligent cruise control, etc.)
  
Post #18860363rd Dec 2017 9:39 am
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Lost for Words
 


Member Since: 03 Sep 2013
Location: Warminster, Wiltshire
Posts: 6556

United Kingdom 2006 Discovery 3 TDV6 HSE Auto Zambezi SilverDiscovery 3
Re: Best to leave AC on all the time.....?

Dannyson wrote:
Having read numerous articles whether to switch AC on and off as and when needed - it seems leaving it on all the time is the best option - saving the o rings and such like 'drying' out thereby prolonging the life of the compressor and such.....?


The "Econ" setting runs it at 5% to do just that. Thumbs Up
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Post #18860473rd Dec 2017 10:11 am
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DaveT
 


Member Since: 01 Aug 2005
Location: Cornwall
Posts: 2369

United Kingdom 2016 Discovery 4 3.0 SDV6 Landmark LE Auto Indus SilverDiscovery 4

In any (every) other car - set 21 deg & left on auto.

Wish the same could be said of the 15 & 16 MY Disco's, where it seems to be necessary to revert to manually controlling the system to maintain a correct temp. (Obviously an improved "Design Intent")

Nick J: Re the AC only working when it needs to reduce the temperature, that's logical, but apparently the system always cools the air down, then re-heats it to the desired temp. Can't remember where I read that though.
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Post #18861053rd Dec 2017 12:55 pm
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lynalldiscovery
 


Member Since: 22 Dec 2009
Location: Maidstone
Posts: 4349

United Kingdom 2006 Discovery 3 TDV6 Metropolis LE Auto Bonatti GreyDiscovery 3

kajtzu wrote:
Mr.Tom wrote:
I just leave it on auto a/c all the time. To help demist if needed, I turn on the heated screens and press the max button, which directs it all at the screen too for a bit.


This. I had never had a heated screen before the D3 but having used it for a while I think it is one of the best convenience features of all time. On the Volvo it conflicts (at least used to) with a bunch of technology packs (pedestrian detectors, lane warnings, intelligent cruise control, etc.)


Even better on a series land rover Thumbs Up
 No Illeism here.  
Post #18861083rd Dec 2017 1:07 pm
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Grianaig
 


Member Since: 08 Jul 2014
Location: Tyne and Wear
Posts: 791

Scotland 2014 Discovery 4 3.0 SDV6 XS Auto Indus SilverDiscovery 4

I fixed the constantly on ac on my series 2a by replacing the vent seals. Thumbs Up
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Post #18861123rd Dec 2017 1:15 pm
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DavidSally
 


Member Since: 31 Oct 2012
Location: Chesterfield
Posts: 539

United Kingdom 2008 Discovery 3 TDV6 HSE Auto Tangiers OrangeDiscovery 3

On all the time all year round on our cars
  
Post #18861373rd Dec 2017 2:39 pm
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Robbie
 


Member Since: 05 Feb 2006
Location: ¯\_(ツ)_/¯
Posts: 17683

United Kingdom 2013 Discovery 4 3.0 SDV6 HSE Auto Baltic BlueDiscovery 4

Totally off is bad. Eco and Auto are both good for longevity.

Mine is usually on Auto for de-misting purposes but on a longer winter run I do nudge it into Eco mode. As already mentioned the system keeps itself lubricated in both Eco and Auto modes.

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Post #18861453rd Dec 2017 3:11 pm
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robpenrose
 


Member Since: 12 Jan 2016
Location: Surrey / SW London
Posts: 1018

United Kingdom 2010 Discovery 4 3.0 TDV6 HSE Auto Stornoway GreyDiscovery 4

What about a D4? There isn’t an eco mode is there?
 

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Post #18862013rd Dec 2017 5:52 pm
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DSL
Keeper of the wheelie bin 


Member Since: 11 May 2006
Location: Somewhere.
Posts: 59128

United Kingdom 2011 Discovery 4 3.0 SDV6 HSE Auto Zermatt SilverDiscovery 4

I've assumed that is when it's off and the LED isn't showing. I tend to leave mine on, if off the car mists up something rotten if switched off. I'd often leave the D3 in "off" but ended up not bothering with that as it wouldn't make any difference to fuel burn. Thumbs Up
 

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Post #18862043rd Dec 2017 5:55 pm
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