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Fix A/C in the winter? #4576149
11/16/17 02:24 PM
11/16/17 02:24 PM
Joined: May 2012
Posts: 4,533
Baltimore, Maryland, USA
zzyzzx Offline OP
zzyzzx  Offline OP
Joined: May 2012
Posts: 4,533
Baltimore, Maryland, USA
I have an A/C hose that I would like to replace, but I wonder if I should bother since I won't be using the A/C until maybe May. I don't normally even use the car in the winter, but where I work you need to use your vacation by the end of the year, or lose it. So should I do this now, while I have the free time, or wait until spring? If it matters the hose is pretty cheap on eBay.
Guy at the auto parts store says that almost nobody does any type of auto A/C work around here in the winter, except maybe the occasional person converting an old system to R134a.

Is there anything obvious that I might be missing here?

Re: Fix A/C in the winter? [Re: zzyzzx] #4576156
11/16/17 02:31 PM
11/16/17 02:31 PM
Joined: Feb 2013
Posts: 11,088
Phoenix, AZ
Nick1994 Offline
Nick1994  Offline
Joined: Feb 2013
Posts: 11,088
Phoenix, AZ
You can pull the a/c relay so that the compressor doesn't kick on with defrost.

But that'll also decrease the performance of defrost if you need it.


2015 Hyundai Sonata 2.4L 88k Motorcraft Synthetic Blend 5w30 & OEM
2000 Toyota Camry 2.2L 231k Valvoline 5w30 & Fram Ultra
1996 Jeep Cherokee 4.0L 147k Mobil 1 HM 10w40 & Fram Ultra
Re: Fix A/C in the winter? [Re: Nick1994] #4576158
11/16/17 02:34 PM
11/16/17 02:34 PM
Joined: May 2012
Posts: 4,533
Baltimore, Maryland, USA
zzyzzx Offline OP
zzyzzx  Offline OP
Joined: May 2012
Posts: 4,533
Baltimore, Maryland, USA
Originally Posted By: Nick1994
You can pull the a/c relay so that the compressor doesn't kick on with defrost.

But that'll also decrease the performance of defrost if you need it.


I don't drive this car in the winter, so that's not an issue. Even if it was, my other car hasn't had working A/C in years and it defrosts just fine. I'm wondering if I can even properly charge my A/C system in cold weather.

Re: Fix A/C in the winter? [Re: zzyzzx] #4576172
11/16/17 02:49 PM
11/16/17 02:49 PM
Joined: Dec 2016
Posts: 7,151
Waco, TX
Linctex Offline
Linctex  Offline
Joined: Dec 2016
Posts: 7,151
Waco, TX
Originally Posted By: zzyzzx
I'm wondering if I can even properly charge my A/C system in cold weather.


Set air to "recirculate" ("defrost" defeats recirculate, I think)
Turn the temp control to heat/hot
and push the A/C button

I think that should work to charge it properly


"The evidence demands a verdict".
(Re:VOA)"it's nearly impossible to actually know the particular additives that are in there at what concentrations."
Re: Fix A/C in the winter? [Re: zzyzzx] #4576186
11/16/17 02:56 PM
11/16/17 02:56 PM
Joined: Jun 2003
Posts: 10,535
Illinois
javacontour Offline
javacontour  Offline
Joined: Jun 2003
Posts: 10,535
Illinois
Is the system open now? I.E. has the refrigerant leaked out, or do you just want to replace a dodgy looking hose before it's trouble?

If the system is open, I would imagine there is a risk of moisture entering the system and corrosion on components. If that is the case, fix it now to avoid damage.

If the system is still sealed shut, AND you think it will remain so over the winter, just wait.


network down, IP packets delivered via UPS -BOFH
Re: Fix A/C in the winter? [Re: zzyzzx] #4576195
11/16/17 03:08 PM
11/16/17 03:08 PM
Joined: Dec 2002
Posts: 42,300
New Jersey
JHZR2 Offline
JHZR2  Offline
Joined: Dec 2002
Posts: 42,300
New Jersey
Id want AC in the winter - nothing worse than windows fogging up in the cold because the air isnt being dried.

Since your best bet is to refill by mass, the ambient temperature shouldnt matter much - it makes a difference if checking by pressures...

Re: Fix A/C in the winter? [Re: javacontour] #4576252
11/16/17 04:04 PM
11/16/17 04:04 PM
Joined: Jun 2003
Posts: 33,564
ME
eljefino Offline
eljefino  Offline
Joined: Jun 2003
Posts: 33,564
ME
Originally Posted By: javacontour
Is the system open now? I.E. has the refrigerant leaked out, or do you just want to replace a dodgy looking hose before it's trouble?

If the system is open, I would imagine there is a risk of moisture entering the system and corrosion on components. If that is the case, fix it now to avoid damage.

If the system is still sealed shut, AND you think it will remain so over the winter, just wait.


The absolute humidity is at its lowest in the winter so OP should have an easier time keeping everything dry.

Re: Fix A/C in the winter? [Re: zzyzzx] #4576254
11/16/17 04:06 PM
11/16/17 04:06 PM
Joined: Sep 2014
Posts: 1,489
Toronto Canada
WobblyElvis Offline
WobblyElvis  Offline
Joined: Sep 2014
Posts: 1,489
Toronto Canada
I don't think you can operate/charge an AC system with the ambient temp below 55F. The pressure switch in the system will not let the compressor operate.
You might fix the car and it may not make it until spring. Accidents happen!

Re: Fix A/C in the winter? [Re: zzyzzx] #4576268
11/16/17 04:23 PM
11/16/17 04:23 PM
Joined: Sep 2015
Posts: 1,595
USA
mk378 Offline
mk378  Offline
Joined: Sep 2015
Posts: 1,595
USA
If it's a slow leak and there is still some pressure you can just wait. Don't leave a system sitting with a big hole and zero pressure. In that case you could put a new hose on and a small amount of refrigerant just to hold air out. When starting from zero, always charge by weight. This is true both winter and summer.

Re: Fix A/C in the winter? [Re: WobblyElvis] #4576296
11/16/17 04:42 PM
11/16/17 04:42 PM
Joined: Jun 2003
Posts: 17,817
Deplorable in apple valley, ca
Chris142 Offline
Chris142  Offline
Joined: Jun 2003
Posts: 17,817
Deplorable in apple valley, ca
Originally Posted By: WobblyElvis
I don't think you can operate/charge an AC system with the ambient temp below 55F. The pressure switch in the system will not let the compressor operate.
You might fix the car and it may not make it until spring. Accidents happen!
The temps must be lower than 55f for the switch to turn the ac off. I am charging a truck right now. cruising bitog while the pump is running.


02 Wrangler carlube 5w30
87 F250 traveler 15w40
07 fjcruiser Chevron 10w30
Z400 castrol T 10w40
Can am maveric edge 5w40
57 case tractor 15w40
Re: Fix A/C in the winter? [Re: zzyzzx] #4576311
11/16/17 04:58 PM
11/16/17 04:58 PM
Joined: Dec 2004
Posts: 426
Dayton,Ohio
ShotGun429 Offline
ShotGun429  Offline
Joined: Dec 2004
Posts: 426
Dayton,Ohio
All the bodyshops around here recharge A/C systems during car repairs indoors in their shops during colder months, it seems to work out well.

Re: Fix A/C in the winter? [Re: zzyzzx] #4576312
11/16/17 04:59 PM
11/16/17 04:59 PM
Joined: Aug 2008
Posts: 21,282
ON, Canada eh?
StevieC Offline
StevieC  Offline
Joined: Aug 2008
Posts: 21,282
ON, Canada eh?
I wish I could pull the relay for my A/C but it sets the CEL because of the dual climate front/rear thing it has. I tried it when I noticed it cycling the A/C occasionally when the system was in the off. Position. Can't wait for that clutch to fail. mad


'18 Dodge Grand Caravan GT - AMSOIL SS 5w20
'06 Santa Fe - 535,000km AMSOIL SS 0w30 / ATF
Re: Fix A/C in the winter? [Re: zzyzzx] #4576317
11/16/17 05:04 PM
11/16/17 05:04 PM
Joined: Nov 2017
Posts: 2
VIC
Arcadian Offline
Arcadian  Offline
Joined: Nov 2017
Posts: 2
VIC
Definitely, fix it in the winter. Apparently, you're also meant to have your heating and A/C serviced every 6-18months to ensure efficiency and minimise wear and tear. Might be an idea to do that in winter as well when the technicians aren't too busy

Re: Fix A/C in the winter? [Re: eljefino] #4576995
11/17/17 10:49 AM
11/17/17 10:49 AM
Joined: Jun 2003
Posts: 10,535
Illinois
javacontour Offline
javacontour  Offline
Joined: Jun 2003
Posts: 10,535
Illinois
Originally Posted By: eljefino
Originally Posted By: javacontour
Is the system open now? I.E. has the refrigerant leaked out, or do you just want to replace a dodgy looking hose before it's trouble?

If the system is open, I would imagine there is a risk of moisture entering the system and corrosion on components. If that is the case, fix it now to avoid damage.

If the system is still sealed shut, AND you think it will remain so over the winter, just wait.


The absolute humidity is at its lowest in the winter so OP should have an easier time keeping everything dry.


True, relatively. The OP is in Baltimore, next to the ocean. So even the lowest humidity could be damp at times.


network down, IP packets delivered via UPS -BOFH
Re: Fix A/C in the winter? [Re: StevieC] #4577251
11/17/17 04:27 PM
11/17/17 04:27 PM
Joined: Jun 2003
Posts: 5,951
Illinois
SHOZ Offline
SHOZ  Offline
Joined: Jun 2003
Posts: 5,951
Illinois
Originally Posted By: StevieC
I wish I could pull the relay for my A/C but it sets the CEL because of the dual climate front/rear thing it has. I tried it when I noticed it cycling the A/C occasionally when the system was in the off. Position. Can't wait for that clutch to fail. mad
Unplug the clutch?

On my Hyundais you can defeat the AC with defrost if you want. But even with it enabled the compressor seldom kicks in when driving. Always when it first starts up but after some heat is blowing very seldom will the clutch kick in.


2008 Hyundai Accent 1.6L 5 sp manual hatchback
2010 Hyundai Genesis Coupe Track 2L Turbo 6sp manual
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