Question about Whirlwind FH-778 Air Conditioner

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How many cans of refrigerant should go in to charge air

I put in 6 cans 13 oz each of 134a and the front vents are not blowing out cold air but the back ones are. Should I put in more cans? How many should it take?

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This must be a 15 passenger van or a Limo maybe. Keep adding cans till 35 psi on the low side or the fan belt starts squealing. if the belt is squealing that is an indicator you have a bit too much in there.

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Posted on Jun 15, 2009

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1 Answer

Gauge readings on my AC look good or bad?


Did you vacuum all air out of the system before charging?
Do you have a fan in front of the vehicle blowing air through the condenser when filling?
Did you fill the system with real brand name refrigerant and not an aftermarket mixe of how knows what refrigerant?
Did you fill until ALL bubbles in you sight glass have gone?

Jul 07, 2018 | Toyota Cars & Trucks

1 Answer

I put 3 small cans of 134a and my 2001 chevy blazer still not cold air?


The entire system only holds 24-oz. So you've got bigger problems than just low on refrigerant

Jun 28, 2017 | Cars & Trucks

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Does anyone know how many cans of freeon it takes to charge the air conditioner


It depends on what size cans of freon you are getting and if the system has been retrofitted for R-134A refrigerant (1992 came originally equipped with an R-12 system). The factory specifications call for 1.8 Lbs. of R-12. If it has been retrofitted for R-134A, the general "rule-of-thumb" is 85% of the R-12 specification is needed to charge the system with R-134A. So if we do the math: 1.8 Lbs (R-12) X .85 (R-134A) = 1.53 Lbs. R-134A needed for a full recharge (providing the system is COMPLETELY empty. Then you will have to find out how much is in each can that you plan to buy and do the math to figure out how many cans you need. (some have 12 oz., some have 14 oz., some have 16 oz., some have 19 oz. and some have 22 oz.)

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I have a 2001 BMW 330CI When I turn on the A/C the drivers side vents blow cold air while the passenger side vents blow warm air or not cold air. You can put your hand in front of the two vents at the...


Hi bensarabia,

This condition is usually an indication that the a/c refrigerant level is low. The driver's side will always get heating and cooling first. I would recommend having the refrigerant level checked and also having it leak tested.

Jun 11, 2011 | 2001 BMW 330

2 Answers

How many pounds of r134 and how much oil ozs.


somewhere around 1.6 pounds (1lb.14ounces) of R134a if system is evacuated and 3 ounces of oil with new compressor.
keep pressure on the low side around 34-37psi & it should blow snow. Below are normal car AC pressure readings with 134A.
  • Normal readings on high and low side with AC OFF (static pressure) – Depends on outside temperature, but normally is between 80-105 PSI
  • Normal low side reading with AC on high speed and MAX & engine at 800-1000 RPM’s – Ranges from 25-35 PSI –
  • Normal high side reading ranges from 200-350 PSI
Don’t assume that if adding little Freon is good that adding a lot is better! Overcharging just a little can decrease the performance of the system and possibly damage the compressor.
DIY recharge kit:
With the AC on the coldest setting, use a thermometer in a middle vent. Normal vent temperature readings will vary depending on the (ambient) outside temp. The vent temperature should range from around 42-55 degrees in my experience. If normal gauge readings are obtained and the vent air is cold – STOP don’t overcharge the system.
Thank you for using fixya and be safe.

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2 Answers

How much 134a does it take to fill the system on


Hi
The R134 capicity for your truck is 64oz with rear a/c.
If the system hoses have been disconnected or if you
are replacing any of the system components ie.
compresor/condenser or reciever drier. It is importent
to evacuate the system to remove any moisture from the system before charging, to avoid problems down
the road, I recommend taking it to somone that has
the proper equipment to ensure all moisture is removed and it gets the proper oil charge and won't
get air bound, plus any leaks that remain will be detected. A proper evacuation and charge can be the
difference between luke warm and COLD air.
Hope this helps.

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1 Answer

2004 Honda Pilot A/C stop working. No clicking sound or cold air


See if it's the compressor by watching the compressor either spinning ( compressor is working ) or not ( compressor not working ). Compressor will not engage if refrigerant is low. Add R-134a ( 12 oz. can )

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1 Answer

Front Air Works Fine, but Rear Air is hot out of top vents


no but there is a expansion valve u will need to replace

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1 Answer

AC STOPPED BLOWING COLD; ONLY BLOWS ON MAX MANUAL SETTING


Your AC is low on refrigerant; The AC compressor needs a minimum amount of regrigerant to run. If and when it does run (while low on refrigerant) the air coming out of the vents will not be cold. The refrigerant you require is R-134A and is available over the counter but if you are the least bit unsure as to how to add refrigerant, taking it to a garage that does AC recharging would be your best play. If you want to try to add refrigerant on your own you will need the following, 1LB can of R-134A, an AC hose adapter to deliver the refrigerant, and preferably an AC pressure guage to ensure you are not overfilling the AC line which will damage the system.

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1 Answer

My nissan almera 2001 wont blow out cold air it blows hot air can you help


go to autozone and get a 134a recharge kit. Comes with a can of refrigerant and charging hose/gauge and instructions. If still no cold air have the system checked by a tech.

Apr 30, 2009 | 2002 Nissan Altima

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