RE: Aircon is for life not just summer
RE: Aircon is for life not just summer
Tuesday 19th December 2006

Aircon is for life not just summer

Turn it on or pay the price, warns specialist


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British motorists are continuing to risk an unwanted £583 bill by ignoring advice about the usage of air-con, according to warranty specialist, Warranty Direct.

The company said too many drivers switch off their air con during the winter leaving it prone to failure when the warmer weather returns.

Company spokesman Duncan McClure Fisher said: “Switched off for long periods of time, water or air can get into the system. The moisture will react with the refrigerant to create acid, which then attacks the seals and pipe-work leaving you with a hefty repair bill.”

Air con is also no longer the luxury it once was. Experts estimate that almost four out of five new cars now come fitted with the cooling system as standard. And data shows that air-conditioning units account for 1 in 20 mechanical failures with an average bill of £583 but as high as £1,661.

As well as regular use throughout the year, Warranty Direct also recommends annual maintenance checks which cost as little as £40 from an independent specialist.

Author
Discussion

fwdracer

Original Poster:

3,565 posts

253 months

Tuesday 19th December 2006
quotequote all

It needs to switched on about once or twice a month (min) for the A/C pump to circulate the PAG oil which is the internal lubricant contained within the A/C refrigerant gas. This has the effect of ensuring the O-rings seals remain lubricated and continue to provide a hermetic seal within the A/C line joints. If it doesn't occur, charge weight drops (gas escapes) and the AC performance falls away.

A/C is brilliant for clearing misty windows anyway in winter..... Put the heat on max and the A/C on and it dries the air entering the vehicle before heating it (Condenser sits before heater matrix). Result is rapid demist and warmer air off temps....

If you don't want any noxious pongs in your car (at least not created by the Manual A/C system hehe) then run the blower on high just before switching the car off to dry the condenser out. Climate Control systems have purge routines and don't require you to do this.

sublimatica

3,210 posts

283 months

Tuesday 19th December 2006
quotequote all
fwdracer said:
A/C is brilliant for clearing misty windows anyway in winter..... Put the heat on max and the A/C on and it dries the air entering the vehicle before heating it (Condenser sits before heater matrix). Result is rapid demist and warmer air off temps....

Am I right in thinking that most systems automatically turn the cooling cycle off if the ambient air is below 5 degs C, to prevent the evaporator freezing up?

Cerby4.5

1,643 posts

270 months

Tuesday 19th December 2006
quotequote all
I have always used mine all year round in every car!
Even the Cerbera air/con was used on most journeys and hence one of the factors why I never had a problem with it!
The XKR and Omegas' climate control are just left switched on all the time!! I just get the system re-gassed once a year and they have all been relatively 'maintenance-free'!!
Cerby4.5
driving

Edited by Cerby4.5 on Tuesday 19th December 11:38

tigger1

8,468 posts

250 months

Tuesday 19th December 2006
quotequote all
How long does air-con need to be on forto circulate the necessary fluids? Tend to pop mine on for 5-10 mins once a week (min), but is this long enough?

Will certainly be trying out the tip about demisting too - and running the blower before turning off the engine.

Ashok

622 posts

288 months

Tuesday 19th December 2006
quotequote all
Also a good idea to run the heater occasionally during the summer to keep things working - you need not be in the car when undertaking this exercise!

fwdracer

Original Poster:

3,565 posts

253 months

Tuesday 19th December 2006
quotequote all
sublimatica said:
fwdracer said:
A/C is brilliant for clearing misty windows anyway in winter..... Put the heat on max and the A/C on and it dries the air entering the vehicle before heating it (Condenser sits before heater matrix). Result is rapid demist and warmer air off temps....

Am I right in thinking that most systems automatically turn the cooling cycle off if the ambient air is below 5 degs C, to prevent the evaporator freezing up?


Some do. With A/C now incorporating humidity sensing in the case of High End Full Climate Control system, some will work almost down almsot to zero depending on ambient and humidity levels.

You only need to run the systems for about 5-10mins to circulate the PAG oil and refirgerant fully.

It usually recommends most of this in.... :winces: The cars handbook boxedin

Graham

16,381 posts

313 months

Tuesday 19th December 2006
quotequote all
you can turn the a/c off hehe I leave the climate control on mine almost constantly...

Dommo

103 posts

271 months

Tuesday 19th December 2006
quotequote all
I have to have mine on in the winter, else the windows steam up. Damn rovers...

targarama

14,785 posts

312 months

Tuesday 19th December 2006
quotequote all
Cerby4.5 said:
I have always used mine all year round in every car!
Even the Cerbera air/con was used on most journeys and hence one of the factors why I never had a problem with it!
The XKR and Omegas' climate control are just left switched on all the time!! I just get the system re-gassed once a year and they have all been relatively 'maintenance-free'!!
Cerby4.5
driving

Edited by Cerby4.5 on Tuesday 19th December 11:38


Once a year? Do they leak? Seems a bit too frequent. I've run cars for 5-6 years with no regassing needed. Might need a de-germification once in a while though.

cj_eds

1,567 posts

250 months

Tuesday 19th December 2006
quotequote all
No point running mine, its already broken
Sitting on hot black leather for hours on end without the aircon last summer wasn't pleasant!

fourmotion

1,032 posts

249 months

Tuesday 19th December 2006
quotequote all
mine switches off when the temperature reaches 4 or below. this isn't funny (or safe) when it does so on the move, as the windows instantly steam up. damn nuisance in fact. any suggestions for preventing this?

markda

836 posts

287 months

Tuesday 19th December 2006
quotequote all
Graham said:
you can turn the a/c off hehe I leave the climate control on mine almost constantly...


I tend to leave mine on also, but there will almost certainly be a snowflake or econ button that will disable the pump altogether.

InRong Ghia

101 posts

313 months

Tuesday 19th December 2006
quotequote all
A contentious option I know, but you could always go back to the old fashioned method of cleaning the screen more often...

I haven't had the aircon cut out and need this, but I was amazed how much dirt came off my screen when I did eventually clean it the other week, never used to get that much in cars without air-con, then again I needed to clean them more often or it took forever to clear.

fwdracer

Original Poster:

3,565 posts

253 months

Tuesday 19th December 2006
quotequote all
Dommo said:
I have to have mine on in the winter, else the windows steam up. Damn rovers...

Check it isn't stuck in recirculation.

King Herald

23,501 posts

245 months

Tuesday 19th December 2006
quotequote all
InRong Ghia said:
A contentious option I know, but you could always go back to the old fashioned method of cleaning the screen more often...

I haven't had the aircon cut out and need this, but I was amazed how much dirt came off my screen when I did eventually clean it the other week, never used to get that much in cars without air-con, then again I needed to clean them more often or it took forever to clear.

I noticed that a week ago, after I wiped the condensation off with a white handherchief. Black goop all over it. eek And nobody smokes in my car either.

Any suggestions for the best way to clean and degrease the inside of a screen? Do these anti-mist solutions/sprays/wipes work?

I hate having smears and fingerprints on mine, unlike some people who happily wipe condensation off with the back of their hand.

morningside

24,147 posts

258 months

Tuesday 19th December 2006
quotequote all
I thought this was a well known and common practice? Obviously not.

robbin'b

115 posts

238 months

Tuesday 19th December 2006
quotequote all
Hail to the King!

I suspect the black gloop on the windscreen is another thing we can blame diesels for (especially the ones fitten in busses). I cleaned the TV screen in our road-facing room on Sunday and got the same kind of muck off that, the back room set was just dusty.

When I say road facing it's on the first floor and directly over the pavement, we can nearly touch the upstairs passengers as the busses go past!

I have used a normal window cleaning spray in the past for windscreens, seemed to do the trick but there must be a specialist product available at three times the price.


Rob

dpledge

1 posts

237 months

Tuesday 19th December 2006
quotequote all
[
I haven't had the aircon cut out and need this, but I was amazed how much dirt came off my screen when I did eventually clean it the other week, never used to get that much in cars without air-con, then again I needed to clean them more often or it took forever to clear.
[/quote]
I noticed that a week ago, after I wiped the condensation off with a white handherchief. Black goop all over it. eek And nobody smokes in my car either.

Any suggestions for the best way to clean and degrease the inside of a screen? Do these anti-mist solutions/sprays/wipes work?

I hate having smears and fingerprints on mine, unlike some people who happily wipe condensation off with the back of their hand.[/quote]

Computer screen cleaner is quite good - do it twice - wipe off with paper towle first time to list off the crap then squeegee the second time to get rid of the lines

edward1

839 posts

295 months

Tuesday 19th December 2006
quotequote all
all very well saying turn it on to demist but as soon as you turn it off the window will mist back up as the vapour taken out of the air then evaporates again and recondenses on the window. 10 mins of air con use results in having it on for the whole journey. With current petrol prices I'd rather not lose a couple of MPG in the euro box.

mcflurry

9,189 posts

282 months

Tuesday 19th December 2006
quotequote all
fourmotion said:
mine switches off when the temperature reaches 4 or below. this isn't funny (or safe) when it does so on the move, as the windows instantly steam up. damn nuisance in fact. any suggestions for preventing this?

Yep - open the window an inch or 2
The ambiant temp and window temp will be around the same and the steaming up will disappear