How Cold shout it get ? Aircon

rik007 · 8th July 2017, 19:47

Hi, Having just replaced the main fan on my car I thought I'd be enjoying ice cold air from the aircon. However its just very cool rather than refreshingly cold. Which was a bit disappointing after all the effort.

I also had the local garage remove and replace the gas, which oddly made no difference what so ever for another £45!

Am I expecting too much of the aircon or should it produce a certain measurable degree of cold air?

Many thanks, Rich.

Geoff130 · 8th July 2017, 19:52

Mine gives very cold air, I'm sure someone with more experience will tell you how to check further.

sworks · 8th July 2017, 19:55

Generally around 6 degrees when measured at the vents with a thermometer

bikerdude666 · 8th July 2017, 20:27

Last time I took mine to be re-gassed, he measured the temp at the vents before and after the re-gas. From memory it was around 13 degrees before and 6 or 7 degrees after.

T-Cut · 8th July 2017, 20:40

Quote:

Originally Posted by rik007

Having just replaced the main fan on my car I thought I'd be enjoying ice cold air from the aircon. However its just very cool rather than refreshingly cold. Which was a bit disappointing after all the effort.

Maybe worth looking at the aircon's condenser matrix. The fan can blow its heart out, but with a bald matrix it still won't work. This photo (from Jules I believe) says it all.

TC

grivas · 8th July 2017, 21:07

Quote:

Originally Posted by T-Cut

Maybe worth looking at the aircon's condenser matrix. The fan can blow its heart out, but with a bald matrix it still won't work. This photo (from Jules I believe) says it all.

TC

This is precisely why air con should be SERVICED by a small independent air-con specialist who is going to check the entire system A to Z so as said above, if the condenser is not condensing then that is that.
The temperature in the cabin with a fully functioning system should be 5 deg Celsius, just like a refrigerator.

neilll · 8th July 2017, 21:19

Mines nice and cold after being checked by Jules but I don`t have a face like that behind my matrix (thank god)!!
Neil

chris75 · 9th July 2017, 10:48

Quote:

Originally Posted by grivas

The temperature in the cabin with a fully functioning system should be 5 deg Celsius, just like a refrigerator.

Apologies for being picky

but the temp in the cabin should be whatever you have set on your controls ie 18, 19 , 20 deg C etc .The air coming out of the vents should be 4deg C ; the speed at which the fan pumps the 4 deg air in controls the cooling of the cabin as the air mixes .

SCP440 · 9th July 2017, 12:14

Technically A/C should remove between 15 and 18 degrees of heat from the ambient temperature.

The problem you have is you turn the Evaporator into a block of Ice it wont flow air as well so you reduce its efficancy, ideally it needs to be held just above freezing so you get maximum airflow and maximum cooling.

In the engine bay with the A/C on one of the A/C pipes should be ice cold to the touch and one should be hot, if not you have a problem.

rik007 · 9th July 2017, 14:08

Thanks everyone for very helpful info .... mine is certainly not 4 - 6 degrees. Which is a real backside. I've got a funny feeling it must be the radiator for the aircon .... bits of rotted ali were falling off of it.

Bumper off again more expense .... and the winter will arrive, then it'll be FBH time! Feel lie i'm chasing my tail!

:-)

Rich

8th July 2017, 19:47	#1
rik007 Loves to post Rover 75 Tourer CDT 2002 Join Date: Aug 2011 Location: Cumbria Posts: 404 Thanks: 41 Thanked 7 Times in 7 Posts	How Cold shout it get ? Aircon Hi, Having just replaced the main fan on my car I thought I'd be enjoying ice cold air from the aircon. However its just very cool rather than refreshingly cold. Which was a bit disappointing after all the effort. I also had the local garage remove and replace the gas, which oddly made no difference what so ever for another £45! Am I expecting too much of the aircon or should it produce a certain measurable degree of cold air? Many thanks, Rich.

8th July 2017, 19:55	#3
sworks Been absent for a while… Rover 75 Tourer, Classic mini Cooper S, Abarth 595 competizione, MG TF and a Hyundai Tucson PHEV Join Date: Feb 2007 Location: Cumbria Posts: 13,065 Thanks: 1,033 Thanked 1,686 Times in 1,040 Posts	Generally around 6 degrees when measured at the vents with a thermometer __________________ ................................................. 'Marmite' Possibly one of the most famous 75 tourers produced! left the production line as the last of only Three Rover 75 tourers produced in Trophy Yellow. 48 hours later Longbridge closed. The last sold ordered 75 Tourer. Paid for by the Phoenix Four and handed over by John Towers to the Warwickshire Northampton Air ambulance service as a Rapid Response vehicle

8th July 2017, 19:52	#2
Geoff130 Loves to post MG ZT 190, Rover 75 CDTi, Honda VFR 750, Honda CB550F Join Date: Aug 2010 Location: Derby Posts: 393 Thanks: 75 Thanked 36 Times in 28 Posts	Mine gives very cold air, I'm sure someone with more experience will tell you how to check further.

8th July 2017, 20:27	#4
bikerdude666 Posted a thing or two Jaguar Xe diseasal Join Date: Nov 2011 Location: Little Stanion, Corby Posts: 1,922 Thanks: 363 Thanked 390 Times in 241 Posts	Last time I took mine to be re-gassed, he measured the temp at the vents before and after the re-gas. From memory it was around 13 degrees before and 6 or 7 degrees after.

8th July 2017, 21:19	#7
neilll Gets stuck in MG ZT,MG ZT-T Join Date: May 2008 Location: St. Helens Posts: 961 Thanks: 211 Thanked 235 Times in 158 Posts	Mines nice and cold after being checked by Jules but I don`t have a face like that behind my matrix (thank god)!! Neil

9th July 2017, 12:14	#9
SCP440 I really should get out more....... MG ZT-T 260 Join Date: Feb 2016 Location: Witney Posts: 2,504 Thanks: 6 Thanked 910 Times in 571 Posts	Technically A/C should remove between 15 and 18 degrees of heat from the ambient temperature. The problem you have is you turn the Evaporator into a block of Ice it wont flow air as well so you reduce its efficancy, ideally it needs to be held just above freezing so you get maximum airflow and maximum cooling. In the engine bay with the A/C on one of the A/C pipes should be ice cold to the touch and one should be hot, if not you have a problem.

9th July 2017, 14:08	#10
rik007 Loves to post Rover 75 Tourer CDT 2002 Join Date: Aug 2011 Location: Cumbria Posts: 404 Thanks: 41 Thanked 7 Times in 7 Posts	Thanks everyone for very helpful info .... mine is certainly not 4 - 6 degrees. Which is a real backside. I've got a funny feeling it must be the radiator for the aircon .... bits of rotted ali were falling off of it. Bumper off again more expense .... and the winter will arrive, then it'll be FBH time! Feel lie i'm chasing my tail! :-) Rich