AC Mechanic with 1234yf refrigerant

[fahadwizz]

I am looking for an AC shop in Lahore capable of handling systems with 1234yf refrigerant. Most of the workshops here dont seem to know anything about it. They make funny faces like i am some kind of idiot talking about a unicorn.

I am not originally form Lahore so for me its mostly hit and trial with mechanics.

Any help will be much appreciated.

Regards

[archon2001]

This post was flagged by the community and is temporarily hidden.

[pwuser154677206269]

Sir try contacting autogenei they seem to be capable person or might

[fahadwizz]

called them. they will get back.

[fahadwizz]

i think Shahnawaz might have it,

[fahadwizz]

any help?

[fahadwizz]

@Xulfiqar

Can i retro fill R134a in my system through adapters since R1234yf is extremely expensive and i really doubt any one stocks it in Pakistan

[pwuser154677206269]

In my information r134a is very much similar to r1234a

[pwuser154677206269]

Or google it

[fahadwizz]

yeah. the couplers are different.

[Xulfiqar]

shahnawaz ltd and dewan motors have the r1234yf system as a complete unit which tests, evacuates, vacuums and fills gas too.

dont know if private shops have invested in such - are any Pakistani made cars coming with R1234yf in them?

[fahadwizz]

I don't think any of the Local manufactured cars are using 1234yf. I checked Shahnawaz, they did not have it in stock. Will check Dewan today. I am more interested in switching to R134a. I have already ordered couplers for that but i m still double minded.

[pwuser151186549178]

Contact the Punjab A/C workshop on Mozang Road Lahore. They are specialist and very old and very experienced people. Here is the contact # 042 36305101.

[Xulfiqar]

you cannot switch to R1234yf refrigerant as the compressor and heat exchangers are different.

Your post rolled as you already have a car with r1234yf and require service. I think thats not the case.

[fahadwizz]

I already do have a car with R1234YF!!! unfortunately lol. Since it has severe availability and cost issues. i wouldnt mind switching to R134A

What i know so far is the gases are similar except for the difference GWP rating R1234YF being much better for the environment. I have checked prices in US/UK and a 30 lbs container for 1234YF costs like 10 times more than R134A. Some guys at Civic X & Dodge forums have switched to R134A from R1234YF by vacuuming the system and filling in the refrigerant. PAG12 oil used in R1234YF systems is backwards compatible with R134A.

Please correct me if i am on the wrong lines.

[fahadwizz]

and yes my EDM Civic (2017) comes with R1234YF which was low on refrigerant on arrival due to being parked and shipped for extended periods apparently i have lost some more refrigerant during 4 months of inactivity due to winters in Lahore.

[Xulfiqar]

The refrigerant mass would need to be lower, and using lower charge with PAG12 oil may cause failure as oil wont circulate as required.

If you can swap out the TXV with a new one and flush the system from all the old oil - then recharge with 134 and test.

[omerfraz]

Assalam o Alaekum
How are you fahad bhai.

Brother i need your help as i m facing the same problem which you were facing about an year ago.
Need to top up AC gas on my EDM vehicle with R1234yf refrigerant
Can you please guide me from where you got your civic hatchback ac gas topped up?

[travelling001]

Well, well, well. I see many people on here totally confused, and also giving very inaccurate information, as usual.

Car manufacturers in Europe that were charging vehicles with R-1234yf refrigerant, kept in mind that in the case of anything unexpectedly going wrong in the future, that the cars were ALREADY EQUIPPED AND COMPATIBLE to handle R-134a refrigerant!! I almost forgot to mention you must ALSO replace the metering device (expansion valve block) as well, because the expansion valve for R-1234yf is different than R-134a.

In FACT, Denso (Which is the compressor used in most Toyota's, Honda's and even Mercedes-Benz) has said that the COMPRESSOR OIL used for R-1234yf IS ALSO COMPATIBLE with R-134a, should the car manufacturer need to revert BACK to R-134a.

What is NOT COMPATIBLE, are the OLD COMPRESSOR OILS specifically for R-134a, you CANNOT use with R-1234yf!! So, for Toyota's example with a Denso Compressor, you CANNOT USE ND-8 Compressor oil with R-1234yf. BUT, if you have a Toyota car with ND-12 Compressor Oil, then it is FULLY COMPATIBLE with R-134a as well!

So as to your question with your Honda Civic 10th Gen Hatchback, Made in the UK, YES, you CAN use R-134a refrigerant in place of R-1234yf. You, however, CANNOT add the PREVIOUS PAG46 compressor oil, to your car! You will need to add the NEW ND-12 Compressor Oil ONLY! DO NOT MAKE THIS MISTAKE!

I was able to purchase the couplers to fit R-1234yf Low and High Side fittings, with my R-134a gauge set, replaced the expansion block valve to a R-134a expansion valve and was able to charge a European Model car with R-134a, and the cars air conditioning system is working perfect and blowing REALLY cold air! I had to recover ALL the old R-1234yf refrigerant, pull a vacuum, add the CORRECT COMPRESSOR OIL FOR THE CAR, and then added the R-134a based on the weight information from the car manufacturer!

By the way, Daimler Benz had a HUGE issue with R-1234yf refrigerants at first, so they retrofitted R-134a BACK into many models! So if Mercedes-Benz trained their DEALERSHIPS in Europe on how to do this, on cars that ORIGINALLY HAD R-1234yf, then they must know better, correct?

[travelling001]

Yes you can. See my post above for complete details on what to do if you would like to charge with R-134a.