20 Best R12 To R134a Conversion Kits [2024]

Are you looking for the best r12 to r134a conversion kits ? Based on expert reviews, we ranked them. We've listed our top-ranked picks, including the top-selling r12 to r134a conversion kits .

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# Preview Product
1 R12 to R134a Conversion Fitting Adapter Kit - R12 to R134a Retrofit Kit with High/Low Side Fitting,... R12 to R134a Conversion Fitting Adapter Kit - R12 to R134a Retrofit Kit with High/Low Side...
2 R12 to R134A AC Retrofit Fitting Adapter Kit, R12 R22 to R134A High/Low Fitting Port Retrofit... R12 to R134A AC Retrofit Fitting Adapter Kit, R12 R22 to R134A High/Low Fitting Port Retrofit...
3 R12 to R134A AC Retrofit Fitting Adapter Kit, R12 R22 to R134A High/Low Fitting Port Retrofit... R12 to R134A AC Retrofit Fitting Adapter Kit, R12 R22 to R134A High/Low Fitting Port Retrofit...
4 Aupoko R12 R22 to R134A Conversion Adapter Kit, R12 to R134A Retrofit Valve Fitting Kit for A/C Pro... Aupoko R12 R22 to R134A Conversion Adapter Kit, R12 to R134A Retrofit Valve Fitting Kit for A/C...
5 Wadoy R12 to R134a Conversion Kit, R12 to R134a Adapter,R12 to R134a Retrofit Kit, 1/4' to 7/16'-20... Wadoy R12 to R134a Conversion Kit, R12 to R134a Adapter,R12 to R134a Retrofit Kit, 1/4" to...
6 Wadoy R12 to R134A Conversion Kit, R12 to R134A Adapter, R12 to R134A Retrofit Kit, High/Low AC... Wadoy R12 to R134A Conversion Kit, R12 to R134A Adapter, R12 to R134A Retrofit Kit, High/Low AC...
7 InterDynamics Certified A/C Pro Car Air Conditioner Adapter Kit, Complete AC Conversion Adapter Kit... InterDynamics Certified A/C Pro Car Air Conditioner Adapter Kit, Complete AC Conversion Adapter...
8 gohantee R12 R22 R502 Screw to R134A Fast Conversion Adapter Valve, R12 to R134A Conversion Kit,... gohantee R12 R22 R502 Screw to R134A Fast Conversion Adapter Valve, R12 to R134A Conversion Kit,...
9 DUOYI R1234YF to R134A Low Side Quick Coupler, R12 to R134A Conversion Kit, Car Air-Conditioning AC... DUOYI R1234YF to R134A Low Side Quick Coupler, R12 to R134A Conversion Kit, Car Air-Conditioning...
10 R12 to R134a Conversion Kit, R12 to R134a Retrofit Kit, R12 R22 to R134A High and Low Fitting Port... R12 to R134a Conversion Kit, R12 to R134a Retrofit Kit, R12 R22 to R134A High and Low Fitting...
11 Mudder 4 Pieces VA-LH11 A/C Pro R-12 to R-134a Retrofit Parts Kit Retrofit Conversion Adapter... Mudder 4 Pieces VA-LH11 A/C Pro R-12 to R-134a Retrofit Parts Kit Retrofit Conversion Adapter...
12 ZeroR® R12 to R134a Refrigerant Car Air Conditioner Adapter, Conversion Kit, High and Low Side... ZeroR® R12 to R134a Refrigerant Car Air Conditioner Adapter, Conversion Kit, High and Low Side...
13 QDJUNE R12 to R134A AC Fitting Adapter Kit, R12 to R134a Conversion Kit, R12 R22 to R134A High/Low... QDJUNE R12 to R134A AC Fitting Adapter Kit, R12 to R134a Conversion Kit, R12 R22 to R134A...
14 AC Recharge Kit Hose with Gauge, 3 Pack Bullet Piercing Tap Valves, R12 to R134a Conversion Kit for... AC Recharge Kit Hose with Gauge, 3 Pack Bullet Piercing Tap Valves, R12 to R134a Conversion Kit...
15 Wadoy R12 to R134a Retrofit Kit for A/C Pro Refrigerant, R12 to R134a Conversion Kit, R12 to R134a... Wadoy R12 to R134a Retrofit Kit for A/C Pro Refrigerant, R12 to R134a Conversion Kit, R12 to...
16 Wadoy R12 to R134a Retrofit Kit, Air Conditioner Conversion Adapter,High/Low AC Fitting Port Wadoy R12 to R134a Retrofit Kit, Air Conditioner Conversion Adapter,High/Low AC Fitting Port
17 Certified A/C Pro Car Air Conditioner Adapter Kit, Complete AC Conversion Adapter Kit Converts R122... Certified A/C Pro Car Air Conditioner Adapter Kit, Complete AC Conversion Adapter Kit Converts...
18 R12 to R134A Conversion Quick Connect Coupler Kit, High/Low Side 90 Degree Angle Quick Coupler... R12 to R134A Conversion Quick Connect Coupler Kit, High/Low Side 90 Degree Angle Quick Coupler...
19 R134a Charging Hose to Refrigerator with Gauge - R134a Can to R12/R22 Port Adapter Kit for A/C Pro... R134a Charging Hose to Refrigerator with Gauge - R134a Can to R12/R22 Port Adapter Kit for A/C...
20 VOSAREA R12 to R134A Adapter Conversion Kit, R134A Retrofit Kit 1/4 Inch High Side Low Side AC... VOSAREA R12 to R134A Adapter Conversion Kit, R134A Retrofit Kit 1/4 Inch High Side Low Side AC...
Bestseller No. 1
R12 to R134a Conversion Fitting Adapter Kit - R12 to R134a Retrofit Kit with High/Low Side Fitting,...
  • This retrofit kit allows the conversion of a system running old refrigerant R12 to run on r134a. Replaces R12 with R134a charging port 1/4" SAE or...
  • Wide compatibility: Fits all vehicles 1976 – 1995. Please check the existing valves size to ensure the proper usage.
  • Easy to install: Can be supported used with valve by screw connection.
  • Made of high quality metal and plastic, solid construction for high heat resistance, durability and safety.
  • Package included: high pressure adapter, low pressure adapter, plastic protective cover caps.
SaleBestseller No. 2
R12 to R134A AC Retrofit Fitting Adapter Kit, R12 R22 to R134A High/Low Fitting Port Retrofit...
  • 【WIDE COMPATIBLITY】 - The AC fitting port adapter retrofit r12 to r134a is completely used to replace R12 R22 with R134A charging port 1/4" SAE or...
  • 【PREMIUM QUALITY】 - R12 to R134A retrofit fast conversion adapter kit are made of high quality metal and plastic, solid construction for high heat...
  • 【EASY INSTALLATION】 - R12 to R134A retro fit fittings connect to the thread for use with the valve, there is a removable schrader valves., fitted...
  • 【DIMENSION】 - These Low/High side retrofits/adapters/fittings will convert your old 1/4’’ SAE or 7/16"-20 UNF R12 R22 charging port and make...
  • 【1 YEAR WARRANTY】 - Order R12 R22 Port to R134a quick disconnect valve adapter from Aupoko, we offer 12 months warranty, true worry-free shopping...
Bestseller No. 3
R12 to R134A AC Retrofit Fitting Adapter Kit, R12 R22 to R134A High/Low Fitting Port Retrofit...
  • 【A/C Adapter】 - The AC fitting port adapter retrofit r12 to r134a is completely used to replace R12 R22 with R134A charging port 1/4" SAE or...
  • 【PREMIUM QUALITY】 - R12 to R134A retrofit fast conversion adapter kit are made of high quality metal and plastic, solid construction for high heat...
  • 【A/C VALVE CORES】-Applies to the replacement refrigerant valve core leak.These accessories can bear the oil, bear the impact, bear the corrosion,...
  • 【DIMENSION】 - These Low/High side retrofits/adapters/fittings will convert your old 1/4’’ SAE or 7/16"-20 UNF R12 R22 charging port and make...
  • 【PACKAGE INCLUDES】- 1 Pcs x Blue Low Side Quick Coupler, 1 Pcs x Red High Side Quick Coupler ,1Pcs Valve Core Remover,2Pcs Seal Caps,4Pcs R12...
Bestseller No. 4
Aupoko R12 R22 to R134A Conversion Adapter Kit, R12 to R134A Retrofit Valve Fitting Kit for A/C Pro...
  • WIDE COMPATIBLITY - Completely used to replace R12 with R134A charging port adapter, perfect air conditioning conversion adapter kit.
  • PREMIUM QUALITY - Made of stainless steel and plastic, solid construction for high heat resistance, durability and safety.
  • EASY INSTALLATION - Connected to the thread for use with the valve, there is a gas valve inside, fitted with a plastic protective cover, easy and fast...
  • NOTE - These Low/High side retrofits/adapters/fittings will convert your old 1/4" SAE R12 R22 charging port and make it accept the R134a quick...
  • 1 YEAR WARRANTY - Order R12 R22 Port to accept R134a quick disconnect from Aupoko, we offer 12 months warranty, true worry-free shopping experience....
Bestseller No. 5
Wadoy R12 to R134a Conversion Kit, R12 to R134a Adapter,R12 to R134a Retrofit Kit, 1/4" to 7/16"-20...
  • 【Great Adapter】: R12 to R134a conversion adapter kit, quick coupler.Complete automotive air conditioning conversion adapter kit with 4 adapters
  • 【Thread】: Low Side, 1/4’’(7/16’’- 20) x 13 mm (Blue). High Side, 1/4’’(7/16’’- 20) x 16 mm (Red).
  • 【Easy To Install】: Save time and effort, can be supported used with valve by screw connection.for conversion of R12 to R134a.
  • 【Premium Quality】: Made of high quality aluminum alloy material to last under extreme conditions and for high heat resistance durability and...
Bestseller No. 6
Wadoy R12 to R134A Conversion Kit, R12 to R134A Adapter, R12 to R134A Retrofit Kit, High/Low AC...
  • R12 to R134A Conversion Kit: Quick coupler, charging port adapter. Our Low and High side fittings will convert your old 1/4" SAE or 7/16’’- 20UNF...
  • Easy to install, save time and effort, can be supported used with valve by screw connection. Lightweight and shortcut.
  • Made of high quality brass alloy material to last under extreme conditions and for high heat resistance durability and safety.
  • The high side is 1/4" SAE(7/16"-20)x16mm; The low side is 1/4"SAE(7/16"-20)x13mm
  • Can be matched used with a valve by connecting with screw thread There are gas valves inside, equipped with a plastic protective cap.
Bestseller No. 7
InterDynamics Certified A/C Pro Car Air Conditioner Adapter Kit, Complete AC Conversion Adapter Kit...
  • Complete automotive air conditioning conversion adapter kit with 4 adapters
  • Includes one low-side 7/16 inch port, one high-side 3/8 inch port, one high-side for 2-Piece GM port, one high-side 7/16 inch port
  • Fits all cars all years
  • For conversion of R12 to R134a
  • Includes retrofit label
Bestseller No. 8
gohantee R12 R22 R502 Screw to R134A Fast Conversion Adapter Valve, R12 to R134A Conversion Kit,...
  • 【COMPATIBLITY】Retrofit valve adapter for automotive air conditioning refrigerant systems converting from R12, R22, R502 to R134A. A connector...
  • 【PREMIUM QUALITY】This r12 to r134a conversion kit is constructed with brass alloy to last under extreme conditions and for high heat resistance...
  • 【EASY INSTALLATION】Easy to be installed, save time and effort, can be supported used with valve by screw connection for conversion of R12 R22 R502...
  • 【SIZE DETAIL】The package includes two R12 to R134a adapters. One low side 1/4" SAE (7/16"-20 thread) port, One high side 1/4" SAE (7/16"-20...
  • 【 SERVICE WARRANTY】We offer 1 year warranty. True hassle-free shopping experience. If you have any questions, Please feel free to contact us by...
SaleBestseller No. 9
DUOYI R1234YF to R134A Low Side Quick Coupler, R12 to R134A Conversion Kit, Car Air-Conditioning AC...
  • 【R1234YF/R12 to R134A Low Side Quick Coupler for Car Air-Conditioning】R1234YF to R134A Low Side Quick Coupler is suitable for AC charging of car...
  • 【R134A Adapter Fittings Model】R1234YF Low Side Quick Coupler: Low side R1234yf coupler 14 mm female x 1/4"SAE male. R12 to R134a Adapter...
  • 【R12 to R134A Conversion Kit is Made of High-quality Aluminum】This adapter is made of high-quality aluminum, with good sealing performance and...
  • 【R1234YF Low Side Quick Coupler with Push Lock Design】Push lock design, with automatic closing function, easier and more convenient to disassemble...
  • 【R12 to R134A Adapter Includes】A low-side R134A quick coupler, a R1234YF low side quick adapter and a blue service port cover.
Bestseller No. 10
R12 to R134a Conversion Kit, R12 to R134a Retrofit Kit, R12 R22 to R134A High and Low Fitting Port...
  • >>[Packing Include]: 1 x Blue Low Side Quick Coupler. 1 x Red High Side Quick Coupler. 1 x 13mm Blue Cap.1 x 16mm Red Cap.
  • >>[Fits Model]: This Retrofit Kit can be supported used with a valve by a screw connection for conversion of R12 to R134a.
  • >>[Popular Thread]: 1/4"(7/16"- 20) x 13 mm (Blue). High Side, 1/4"(7/16"- 20) x 16 mm (Red).
  • >>[Premium Quality] This R12 to R134a Retrofit Kit, it's easy to use,  Be made of solid premium aluminum construction, with a gasket protected to...
  • >>[Enjoy High-Quality Service] We think Customer satisfaction is our priority; So if you are not completely satisfied you can ask for a replacement or...
Bestseller No. 11
Mudder 4 Pieces VA-LH11 A/C Pro R-12 to R-134a Retrofit Parts Kit Retrofit Conversion Adapter...
  • Package includes: you will receive 1 piece low-side 7/16 inch port, 1 piece high-side 3/8 inch port, 2 pieces adapters convert R12 to R134a for 2...
  • Application: these low/ high side retrofits converts 1/4 inch SAE R12 R22 charging port and make it accept the R134a quick disconnect hose, fits most...
  • Function: converts from R-12 to R-134a air conditioning system, this valve can be screwed on top of a closed AC system that just needs a little...
  • Easy to install: connected to the thread for use with the valve, 1 gas valve inside, fitted with a plastic protective cover
  • Durable material: both of the kit are made of corrosion-resistant metal that won' t wear out or rust over time, and anti-leaking design that will be...
Bestseller No. 12
ZeroR® R12 to R134a Refrigerant Car Air Conditioner Adapter, Conversion Kit, High and Low Side...
  • FITS: All R12 systems for all years, Low and High side service ports.
  • PIECES INCLUDED: One low-side 7/16 inch port, one high-side 3/8 inch port, one high-side for 2-Piece GM port, one high-side 7/16 inch port, retrofit...
  • RECHARGE: ZeroR has all the R-134a products you need from refrigerant, oil, stop leak and installation tools
  • QUALITY: Aluminum fittings
  • COMPATIBILITY: Will work with all R-134a refrigerant installation tools
Bestseller No. 13
QDJUNE R12 to R134A AC Fitting Adapter Kit, R12 to R134a Conversion Kit, R12 R22 to R134A High/Low...
  • [PACKING] These Low/High side /adapters/fittings will convert your old 1/4" SAE or 7/16"-20 UNF R12 R22 charging port and make it accept the R134a...
  • [INSTALLATION] R12 to R134A retro fit fittings connect to the thread for use with the valve, there is a removable valves, fitted with a plastic...
  • [QUALITY] R12 to R134A fast conversion adapter kit, Durable material: both of the kit are made of corrosion-resistant metal that won' t wear out or...
  • [COMPATIBLITY] The AC fitting port adapter r12 to r134a is completely used to replace R12 R22 with R134A charging port 1/4" SAE or 7/16"-20UNF...
  • [LIFT-TIME WARRANTY] pursue outstanding quality and service, If you are not satisfied with this product or if you have any question, please feel free...
Bestseller No. 14
AC Recharge Kit Hose with Gauge, 3 Pack Bullet Piercing Tap Valves, R12 to R134a Conversion Kit for...
  • UNIVERSAL AC RECHARGE HOSE WITH GAUGE - One end with a valve connects to the can with 1/2 trapezoidal thread, and the other end connects to the car's...
  • QUALITY MATERIAL & DURABLE - The hose is made of quality rubber with high-pressure resistance. The copper valve is durable to use.
  • USER-FRIENDLY – The 90-Degree push and lock coupler features an auto shut-off function. The built-in safety valve to prevent accidental venting of...
  • UNIVERSAL CONVERSION VALVE – Comes with a conversion valve which is used to convert from R-12 to R-134A air conditioning system. Can be screwed on...
  • COMPLETE KIT - Package Includes: 3 x Bullet Piercing Tap Valves; 1 x R134a Charging Hose with Gauge; 1 x Universal Conversion Valve; 1 x Dust Cap; 3 x...
Bestseller No. 15
Wadoy R12 to R134a Retrofit Kit for A/C Pro Refrigerant, R12 to R134a Conversion Kit, R12 to R134a...
  • Package include:One low side port and one high side port. Please confirm the size of the product before buying
  • Perfect air conditioning conversion adapter kit. Completely used to replace R12 with R134a
  • Easy to operate and install, made it easy to convert an r-12 system over to r134a. A good helper for your car
  • Fits all vehicles 1976 – 1995
Bestseller No. 16
Wadoy R12 to R134a Retrofit Kit, Air Conditioner Conversion Adapter,High/Low AC Fitting Port
  • 【Great Adapter】: R12 to R134a conversion adapter kit, quick coupler.Complete automotive air conditioning conversion adapter kit with 4 adapters
  • 【Thread】: one low-side 7/16 inch port, one high-side 3/8 inch port, one high-side for 2-Piece GM port, one high-side 7/16 inch port.
  • 【Premium Quality】: Made of high quality aluminum alloy material to last under extreme conditions and for high heat resistance durability and...
  • 【Easy To Install】: Save time and effort, can be supported used with valve by screw connection.for conversion of R12 to R134a.
  • 【Compatible With】:Fits all vehicles 1976 – 1995
SaleBestseller No. 17
Certified A/C Pro Car Air Conditioner Adapter Kit, Complete AC Conversion Adapter Kit Converts R122...
  • Complete air conditioning conversion adapter kit with 2 adapters
  • One low side .44 inch port and one high side .38 inch port
  • For pre-1976 vehicles and some late model imports
  • For conversion of R12 to R134a
  • Includes retrofit label
Bestseller No. 18
R12 to R134A Conversion Quick Connect Coupler Kit, High/Low Side 90 Degree Angle Quick Coupler...
  • 【WIDE COMPATIBILITY】 - The high/low 90 degree angle side quick coupler with R134A tank adapter are suitable for R134A air conditioner manifold...
  • 【6 BALL STYLE COUPLERS】 - This r134a quick coupler design with 6 ball style, and have a snap lock coupler for quick connect. R134A high side...
  • 【USEFUL TANK ADAPTER】 - This R12 to R134A adapter kit comes with an extra R134A refrigerant tank adapter, 1/2" Female and 1/4" SAE Male, connects...
  • 【PREMIUM QUALITY】 - AC quick connector fittings kit are made of heavy-duty brass for durable using, knurled grip ring for easy, no slip use,...
  • 【1 YEAR WARRANTY】 - This R12 gauge conversion kit with quick couplers comes with 12 months warranty. If the conversion kit fails or any other...
SaleBestseller No. 19
R134a Charging Hose to Refrigerator with Gauge - R134a Can to R12/R22 Port Adapter Kit for A/C Pro...
  • 1.Package Includes: 1 pc R134a Charging Hose With Gauge,1 Set R12 to R134a Conversion Kit(4 Pieces ),1 Set Piercing Valve(Each kit including 1...
  • 2.Sturdy material: made of corrosion-resistant metal that won't wear out or rust over time, a convenient replacement part for you to use; The hose...
  • 3.R134a Charging Hose : 19" long, Only used for Home Refrigerator adding refrigerant, Come with gauge for easily viewing during use, connect to the...
  • 4.R12 to R134a Retrofit Kit : One low side port and one high side port, Completely used to replace R12 with R134a, made it easy to convert an R12...
  • 5.Piercing Valve ( Not OEM)for HVAC System, 3-In-1 Line Tap Piercing Valve for Bullet, Fits 3 sizes of tubing: 1/4", 5/16" and 3/8", include: 1...
Bestseller No. 20
VOSAREA R12 to R134A Adapter Conversion Kit, R134A Retrofit Kit 1/4 Inch High Side Low Side AC...
  • - These low/ high side retrofits/ adapters/ fittings are designed to replace your old 3/ 16 or 1/ 4 R12 A/ charging port and make it accept the R134a...
  • - With removable gas valves and plastic A/ system cap. Effortless installation save you.
  • - Can be matched used with connecting with screw thread. Fit for you car A/ system.
  • - Iron ac adapter with copper plating finish to ensure long term durable use and enhance appearance.

Having trouble finding a great r12 to r134a conversion kits ?

This problem is well understood by us because we have gone through the entire r12 to r134a conversion kits research process ourselves, which is why we have put together a comprehensive list of the best r12 to r134a conversion kits s available in the market today.

After hours of searching and using all the models on the market, we have found the best r12 to r134a conversion kits for 2023. See our ranking below!

How Do You Buy The Best R12 To R134a Conversion Kits ?

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We understand, because we’ve already gone through the whole process of researching r12 to r134a conversion kits , which is why we have assembled a comprehensive list of the greatest r12 to r134a conversion kits available in the current market. We’ve also come up with a list of questions that you probably have yourself.

John Harvards has done the best we can with our thoughts and recommendations, but it’s still crucial that you do thorough research on your own for r12 to r134a conversion kits that you consider buying. Your questions might include the following:

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Potential sources can include buying guides for r12 to r134a conversion kits , rating websites, word-of-mouth testimonials, online forums, and product reviews. Thorough and mindful research is crucial to making sure you get your hands on the best-possible r12 to r134a conversion kits . Make sure that you are only using trustworthy and credible websites and sources.

John Harvards provides an r12 to r134a conversion kits buying guide, and the information is totally objective and authentic. We employ both AI and big data in proofreading the collected information.

How did we create this buying guide? We did it using a custom-created selection of algorithms that lets us manifest a top-10 list of the best available r12 to r134a conversion kits currently available on the market.

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  1. Brand Value: Every brand of r12 to r134a conversion kits has a value all its own. Most brands offer some sort of unique selling proposition that’s supposed to bring something different to the table than their competitors.
  2. Features: What bells and whistles matter for an r12 to r134a conversion kits ?
  3. Specifications: How powerful they are can be measured.
  4. Product Value: This simply is how much bang for the buck you get from your r12 to r134a conversion kits .
  5. Customer Ratings: Number ratings grade r12 to r134a conversion kits objectively.
  6. Customer Reviews: Closely related to ratings, these paragraphs give you first-hand and detailed information from real-world users about their r12 to r134a conversion kits .
  7. Product Quality: You don’t always get what you pay for with an r12 to r134a conversion kits , sometimes less, and sometimes more.
  8. Product Reliability: How sturdy and durable an r12 to r134a conversion kits is should be an indication of how long it will work out for you.

John Harvards always remembers that maintaining r12 to r134a conversion kits information to stay current is a top priority, which is why we are constantly updating our websites. Learn more about us using online sources.

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FAQ:

Q: What happens if you put R134a in a R12 system?

A: What happens if you put r134a in a r12 system? The oils are different and not compatible and can cause an explosion. R134a is also a smaller molecule than r12 so if you HAD a small leak with r12 that you did not fix you have an even bigger leak now.

Q: How to put R134 into a R12 system?

A: Recover all R12 and dispose of it correctly. Remove all traces of the mineral oil. Re-charge the lubricant wit a polyol ester lubricant. Replace the expansion device with the appropriate device. Evacuate the system and replace the filter drier with a compatible drier. Re-charge with R134a to the correct charge by superheat,subcooling and sight glass.

Q: What do I need to convert from R12 to R134a?

A: Discharge the R12 and recover the R12 for recycling. Flush evaporator and condenser with AC flush kit to remove mineral oil Flush AC high pressure and suction lines to remove mineral oil Empty oil from compressor Add specified Ester or PAG oil in the proper viscosity to the compressor,condenser and evaporator.

Q: Can I add R134a directly to my R12 system?

A: Can I add R134a directly to my R12 system? No. Federal law prohibits topping off an R12 system with a different refrigerant. Your options are to locate some R12, however you must be certified to purchase, and add it with an R-12 recharge hose.

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