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The 8 Best automotive air conditioning system retrofit kits of 2025

Are you trying to find automotive air conditioning system retrofit kits among various brands on the market but aren’t sure where to begin? To assist you in finding the right one, we’ve put together a list of the 7 best to help you pick the perfect one!

We investigated and evaluated a number of the top-selling automotive air conditioning system retrofit kits on the market in order to create our list of the best. Making a decision among the many options available is never simple. There are an infinite number of models available, each with a distinct price. And as you’ll find out, the best options aren’t usually the ones you imagine! This comparison is rich and relevant because of the numerous factors that were employed. You will find products featured in this ranking not only based on their pricing but also on their features and other customers reviews. To write this review, we completed 19 hours of research and did 45 automotive air conditioning system retrofit kits tests. You won’t need to pick products at random any more. If you’re unsure of what to look for, browse our list and consult the buying guide!

An overview of our top picks

Table of contents

The best automotive air conditioning system retrofit kits you can buy today

No. 1
A/C KIT UNIVERSAL UNDERDASH EVAPORATOR 432-100 12V WITH ELECTRICAL HARNESS
  • Universal Under-Dash Evaporator Unit Model: E-432-100 NEW Cool Only 32 pass 4way all aluminum coil Expansion valve 1.5 Ton Thermostat and rotative 3-speed blower switch 12 VOLTS DOUBLE SHALF BLOWER MOTOR Mounting bracket drain hose and T included 12,700BTU capacity 359 CFM DIMENSIONS: L14½" X D12½" X H6"
  • Compressor Model: C5H142A12V SD508 5H14 Sanden Style 2A Groove Pulley 12v coil Also available 8PK Pulley
  • Condenser Model: CPF121620 PARALLEL FLOW (micro-tube technology) 12"H X 16"L .70"(20mm Core Depth)W 4 Rails Aluminum #8 O-ring IN #6 O-ring OUT Condenser Fan Model: CF1212 12" Diameter 12 Volts 80W 6 AMP Reversible Puller or Pusher 4 Mounting Brackets included Electrical Harness all ours kits come with “Plug and Play” Electrical harness to easily connect all the components designed for a regular size car or trucks applications. for special Lengths applications please contact us extra charges maybe apply
  • Hoses Set Model: H6516,H81332, H1012 A/C HOSE #6 5/16 = 6'feet #8 13/32 = 4'feet #10 1/2 = 5' feet (NOTE: if you need extra hose JUST LET US KNOW, extra charges maybe apply)
  • Fitting Set Model: FTSET404 1-N° 10 90° O-ring Fitting w/R134a Serv Port 1- N° 8 90° O-ring Fitting w/R134a Serv Port 1- N° 10 Straight O-ring Fitting 1- N° 10 90° O-ring Fitting 2- N° 6 90° O-ring Fitting 1- N° 8 90° O-ring Fitting 2- N° 6 Straight O-ring Fitting Set include metal FERRULES and CLAMPS If you decided use a/c clamps you don't need special crimper tool (YES... We include both systems) O-ring set is included Filter Drier Model: FD100B BLACK 2½"Diameter 7½"Hight Sight Glass #6 ⅜ X ⅜ O-ring connections both sides (HI/LOW BINARY PRESSURE SWITCH AND HARNESS CONNECTOR INCLUDED)
  • We includes full DIY installation guidelines, also we can provide you a technical support over the phone or via email 727-687-6769
No. 2
JIFETOR AC Flush Kit, Car Air Conditioner System Clean Canister Flushing Gun Tool Set, for Auto HVAC Pipe Line Cleaning, with 220PSI Gauge, Air Fittings and Hose
  • Superior AC System Flush Tool: This 1 liter empty flush canister is made of high quality stainless steel, sturdy and anti-corrosion. The tank body adopts integrated molding technology, which is very strong and pressure-resistant. The brass integrated cover is equipped with 1/4 inch American and European air plug with ball valve, brass outlet for connecting hose, pressure gauge(0-220 pounds per square inch) and hook.
  • Excellent Hose and Spray Gun: Rubber nylon resin material durable hose, 3-1/2 feet long, features with anti-corrosion, low fluid resistance and high bearing pressure, max working pressure is 600 pounds per square inch and burst pressure is upto 3000 pounds per square inch. Spray gun uses aluminium material with brass nozzle and rubber tappered tip. The fittings which will touch the flush solvent, all adopt brass and aluminum material, ensure the AC flushing kit can be used repeatedly.
  • Wide Usage of JIFETOR Air Conditioner Flush Cylinder: When replace or retrofit AC system, or there is odorous smell from air conditioning, you can use this AC cleaning tool kit to deep flush each component individually including hose, condenser and evaporator. Do not flush the compressor, expansion valve, orifice tube, filter drier and accumulator. JIFETOR flush bottle set also can be used to clean fuel pipe, and any other washable line such as household refrigerator air conditioner line.
  • How It Works: The air conditioning flush can, use shop air to pressurize and spray specific AC flush solvent, to flush old oil, refrigerant contaminants and residue, moisture, acid and dirt. The rubber tapered tip can be sealed against pipe opening and prevent backspray of solution. If the pipe opening is smaller than the rubber tapered tip, you can try to take the tapered tip off and insert the brass spray nozzle into the pipe.
  • Operation Steps: When replace or retrofit AC system, you need recover the old refrigerant, disassemble AC system components, fill the flush canister with lightweight solution, assemble flush kit components and tighten, insert the tapered tip into line then flush and blow, assemble AC system component, vacuum leak check and recharge. Pay attention to pressure gauge index when using, please do not exceed 150 pounds per square inch.
  • Packing List: JIFETOR complete AC flush kit includes 1 empty cylinder, 1 3-1/2 feet hose with flush gun, and some spare fittings and o-rings. AC flush solution, air compressor and air hose are not included. The instructions in the package introduce the usage and precautions of the product in detail. There is a detailed instructions pasted on the bottle, please read it carefully before operation, and always refer to equipment manufacturer's operation instruction.
No. 3
Rossesay AC Flush Kit Air Conditioner System Flush Canister Kit AC Drain Line Cleaner Tool Air Conditioning Pipeline Cleaning Tool Set with Gauge, Air Fittings and Hose for Car Air Conditioner Pipe
  • Comprehensive Ac Flush Kit: our AC flush kit comes equipped with all the components you need for a complete and thorough cleaning of your air conditioning systems and other related systems; The kit includes 1 empty can, 1 pressure gauge, 1 flushing head with a rubber conical tip, 1 pcs 35.4 inch hose, 2 spare adapters (1 1/4" SAE brass hose adapter and a 1/4" NPT air plug), 2 spare rubber O shaped rings, 2 spare plastic gaskets, and 1 plastic storage box
  • Broad Application: apart from being suitable for all AC systems, our air conditioner system flush canister kit also works effectively on many other systems; These include car air conditioning pipelines, condensers, evaporators, fuel pipelines, and domestic refrigerators/AC pipelines; By rapidly and effectively clearing out the old refrigeration oil and debris, it provides vital maintenance before you replace the compressor or retrofit the system
  • Simple and Convenient Operation: using our ac drain line cleaner tool is a breeze; Just fill the included empty can with your lightweight AC flush solvent (not included), attach our kit's components to the can, and connect it to your air compressor (not included); Then open the valve switch and air pump; Please remember, the working pressure should not exceed 150PSI to ensure safe and effective operation
  • Durable and Quality: we've committed to building our air conditioning pipeline cleaning tool set for longevity and reliability; The main can is made of thickened aluminum alloy, which is strictly manufactured to prevent leakages, resist high pressure, and combat corrosion; With regular use, you can count on a long lifespan, repeatable applications while maintaining outstanding performance
  • Readily Available Pressure Monitoring: our radiator flush kit comes with a pressure gauge that allows real-time monitoring of the pressure inside the bottle, offering a simple method to read data; Initiating a flush is simplified with a rubber conical nozzle, designed to seal the pipeline mouth and prevent the flush solvent from back spewing
No. 4
Generic A/C KIT UNIVERSAL UNDERDASH EVAPORATOR 404-100 HEAT AND COOL 12V WITH ELECTRICAL HARNESS, 12700
  • Universal Under-Dash Evaporator Unit Model: E-404-100 Heat & Cool 32 pass 4way all aluminum coil Expansion valve 1.5 Ton Thermostat and rotative 3-speed blower switch 12 VOLTS DOUBLE SHALF BLOWER MOTOR Mounting bracket drain hose and T included 12,700BTU capacity 359 CFM DIMENSIONS: L15¾" X D12½" X H6" Compressor Model: C5H142A12V SD508 5H14 Sanden Style 2A Groove Pulley 12v coil Also available 8PK Pulley Condenser Fan Model: CF1212 12" Diameter 12 Volts 80W 6 AMP Reversible Puller or Pusher 4 Mounting Brackets included Electrical Harness all ours kits come with “Plug and Play” Electrical harness
No. 5
Air Conditioning Valve Core Kit | Cap & Valve AC R12 R134a Teflon Seal Refrigeration A/C Air Conditioning Service Valve Car & HVAC AC Charging Port Seal Caps Kit (A/C System Cap & Valve Seal Kits)
  • Air conditioner valve core for Car and Home AC, R12 R134a air-conditioning accessories.Repair leaking A/C system, restore A/C function.
  • High/Low Side A/C Port "Poppet" Style High Flow Service Valve,"Schrader valve" Style Poppet valve comes installed in valve like OE style (valve not serviceable separately from the port),All the seals needed to complete the job.Aftermarket Part fits in place of MT0145, 59945, Ford F3AZ-19E762-B, Volkswagen & Audi 357-820-795K, Porche 95557310100,MT0105, 800-955, 59946, GM 52458184, Ford F3AZ19E762A, Chrysler 5003463AA VW & Audi 357-820-795J and more.
  • Air conditioner valve core, HVAC R12 R134a air-conditioner accessories, suitable for car air-conditioner replacement and maintenance.
  • All the seals needed to complete the job.Compatible with both R12 R22 and R134a refrigerants,applies to the replacement refrigerant valve core leak.
  • Package included:1 Pieces High Side A/C Service Valves,1 Pieces Low Side A/C Service Valves, 4 Pieces Seal caps,4 pieces R12 valve Core, 4 pieces R134a valve Core,1 pieces Big buick valve cores, 1 pieces Small buick valve cores,1Pieces Dual Head Valve Core Remover Tool.
No. 6
7 Pcs Refrigerator AC Freon Recharge Hose with AC Retrofit Valve,Gauge Kit, with BPV31 Bullet Piercing Tap Valve, R134A Self Sealing Adapter for Refrigerant and Car AC System Recharge Repair Tools
  • 【Size Detail】: Refrigerator AC refrigerant recharge kit is suitable for R134A R12 or R22 Freon tanks, easy to connect and use, using this refrigerant charging kit, you can quickly and accurately charge the refrigerator or car air conditioning system, bringing you satisfactory use experience
  • 【Quality material】: The refrigerator AC refrigerant recharge kit and valves are made of metal and rubber materials, which are safe, reliable, sturdy and durable, have a long service life, are easy to install and disassemble, and have no Freon leakage
  • 【Complete Set】: This kit is the perfect solution for your home refrigerator and AC refrigerant system. It features an AC Retrofit Valve, allows you to use the hose on your refrigerator and the RH R134a Self-Sealing Adapter makes it compatible with R134a self-sealing cans
  • 【Compatibility】: This refrigerator charging kit is the perfect solution for all your air conditioning needs, it's compatible with refrigerators and cars, and fits both EPA-required self-sealing Freon cans and old-school single-pierce bottles
  • 【What You Can Get】: You will receive 1 R-134A refrigerant charge hose with pressure gauge, 4 bullet piercing valves, 1 AC retrofit valve, 1 RH R134a self-sealing adapter, sufficient quantity to Meet your usage and replacement needs
No. 7
New A/C universal kit underdash compressor complete air conditioner 12V
  • ✅ INCLUDED: Brand New A/C Compressor (SD508 - 12V), A/C Condenser and Condenser Fan, Evaporator Unit (18.000BTU), Receiver Drier, Hoses and Fittings.
No. 8
R12 to R134a Conversion Kit, R12 to R134a AC Retrofit Fitting Adapter Kit, High/Low Pressure R12 to R134a Adapter Kit with 1/4'' Female to 7/16"-20 UNF Connection, for Auto A/C Refrigerant System
  • 【R12 to R134a Conversion Kit】The FANOVO r12 to r134a auto conversion kit comes with 1pcs r12 to r134a high side adapter, 1pcs r12 to r134a low side adapter, 1pcs valve core removal tool
  • 【Great R12 to R134a Convert Adapter】The FANOVO low/high side r12 to r134a convert adapter can convert your old 1/4'' SAE or 7/16"-20 UNF R12 R22 charging port for fiting r134a quick charge hose, nice tool for automotive air conditioning refrigerant systems
  • 【Size Description】Low side r12 to r134a conversion adapter: 1/4''(7/16''- 20) x 13 mm (Blue); High side r12 to r134a conversion adapter: 1/4''(7/16''- 20) x 16 mm (Red)
  • 【Premium Brass Material】The FANOVO r12 to r134a retrofit adapters are made of high quality brass material,with excellent sealing, corrosion-resistant, solid and durable feature
  • 【Wide Application】The FANOVO air conditioning conversion adapter kit is completely used for replacing r12 r22 with r134a charging port 1/4" SAE or 7/16'' - 20UNF adapter. It's a ideal air conditioning conversion adapter kit for repairman
No. 9
A/C Retrofit Valve Kit-Refrigerant Retrofit Valve Set, with R12 to R134A Low Side Adapter, BPV31 Bullet Piercing Valve, for HVAC Refrigerant System R12 R22 R502 R134A
  • 【A/C Retrofit Valve Kit】The a/c recharge valve kit includes:1 pieces r22 to r134a low side adapters with dust cap, 1 pack BPV31 bullet piercing tap valve (with 1 piercing valve, 1 hex key, 2 adapters)
  • 【R12 to R134A Retrofit Conversion Adapter】The ac retrofit valve with blue dust cap with 7/16'' low side port can convert from R12, R22, R502 to R134a
  • 【BPV-31 Bullet Piercing Tap Valve】The bpv31 piercing valve is compatible with 1/4inch, 5/16inch, 3/8inch outside diameter pipes. And the bullet piercing tap valve can replace the part model of AP4502525, BPV31D, GPV14, GPV31, GPV38, GPV56, MPV31
  • 【Premium Material】The r12 to r134a retrofit conversion fitting is made of premium brass and the BPV-31 bullet piercing tap valve is made of zinc alloy, which make the retrofit valve kit durable for long-time use to meet your daily repair work need
  • 【Wide Application】The a/c recharge valve kit usually used for automotive or home air conditioning refrigerant systems. Suit for vehicles pre-1994, comes with R-134a refill fittings
SaleNo. 10
FOUR UNCLES AC Flush Kit, A/C Air Conditioner System Flush Canister Kit Clean Tool Set R134a R12 R22 R410a R404a for Auto Car
  • DESIGNED TO FLUSH OUT IMPURITIES: Use our Auto Air Conditioning Flush Kit to flush your vehicle after compressor burnouts to remove moisture, acid, and contaminants.
  • VERSATILE FOR YOUR NEEDS: Quickly and efficiently remove old refrigerant oil and debris before replacing or retrofitting your compressor system. Designed to work with any lightweight AC system flush solvent (not included). Even can be used to clean out a refrigerator line or a line set on your home.
  • EASY TO USE FLUSHING SYSTEM: Simply fill your AC flush tool canister with a lightweight AC flush solvent (Not include) then tighten the fittings to the canister. Attach to your air compressor (not included), and turn on the valve switch. Do not exceed 150 PSI. Instructions included for your convenience.
  • DURABLE & REUSABLE: The air conditioner system flush kit is made of thickened stainless steel canister without leak. The canister is high pressure and corrosion resistant for a long service life, the canister is reusable, will stand up to years of wear and tear.
  • THE PACKAGE INCLUDES: 1*Empty Canister, 1*Hose(2.95ft), 2*Adapters (1 x USA fitting and 1x European fitting), some replacment parts.

How to choose a good automotive air conditioning system retrofit kits

Does the idea of finding a fantastic automotive air conditioning system retrofit kits make you anxious? When it comes to purchasing this product, specifically when deciding which model to select, has your head been spinning between options? You are not alone if that is the case. We are aware of the pressure involved in the purchasing process!

Your presence here indicates that you are interested in automotive air conditioning system retrofit kits. Before choosing which product would be the best for your needs after being inundated with information, locate a reliable source with genuine selections. You can get that information from a variety of sources, including buying guides and rating websites, word-of-mouth recommendations from friends and family, online discussion forums where users can share their own experiences, product reviews that can be found all over the internet, and YouTube channels. You can only get the right product through exhaustive analysis. But you realize that’s not always simple. In order to ease your concerns, we have taken the time to develop a list of the top automotive air conditioning system retrofit kits products available right now. You might be wondering how we came up with the list. How was this buying guide developed?

First, we used our algorithms to gather as much reliable data as we could about these products. To verify all the data gathered, we used both artificial intelligence and a lot of algorithms.
Then, our experts used criteria that are recognized in the business to evaluate them according to their quality to price ratio, allowing us to choose the top automotive air conditioning system retrofit kits on the market right now!

The selection of the goods is not arbitrary. Before creating a list, we take into account a number of factors. Below are some of the criteria discussed:

Brand Value: What happens if you choose a dubious brand just because it appears to be a good deal? So the likelihood of receiving a product with a short shelf life increases. That is due to the fact that well-known brands have a reputation to uphold, while others do not. Top automotive air conditioning system retrofit kits brands strive to provide some distinctive traits that set them apart from the competition. So, hopefully one or more of the items on our list will be perfect for you.

Features: Useful features are all you need, not tons of them. We consider the important aspects and select the top automotive air conditioning system retrofit kits based on those.

Specifications: Numbers always help you measure the quality of a product in a quantitative way. We try to find products with higher specifications, but with the right balance.

Quality: A product’s quality may always be quantified with the aid of numbers. We look for goods with better standards that strike the proper balance. The best quality product that gets highly appreciated and recommended by experienced users.

Customer ratings:  Would it be accurate to suggest that the automotive air conditioning system retrofit kits were used by hundreds of customers before you? Superior ratings indicate that many customers had better service.

Customer Reviews: Like ratings,  provide you with accurate and reliable information about the product from genuine customers. Customer ratings are very important to all of us because they contain accurate and reliable information about the customer service we received from several hundred customers.

Seller Rank: This is very intriguing! Not only do you need a good automotive air conditioning system retrofit kits, you also need a product with rising sales that is trendy. It accomplishes two goals. First, the expanding user base proves the quality of the product. Second, given that number, producers must be able to offer greater quality and after-sales support.

Value: You get what you pay for, they say, so consider the value. Cheap isn’t always good and expensive isn’t always bad. However, that does not imply that spending a lot of money on a product that is flashy but underwhelming is a good idea. Before adding them to the list, we make an effort to evaluate how much value you can get for your money from your automotive air conditioning system retrofit kits.

Durability: Durability and reliability are closely related concepts. You will benefit from a strong and long-lasting automotive air conditioning system retrofit kits for months and years to come.

Product availability: Products come and go, and new ones replace the old ones. Most likely, a few new features and required changes were made. What use is it to use a supposedly good product if the maker no longer supports it? We make an effort to highlight products that are current and offered by one or more trustworthy sellers, if not more.

Negative Reviews: Yes, we do take that into account as well! The goods with the majority of bad reviews are filtered out and disregarded when we choose the best-rated one on the market.

These are the standards by which we selected our automotive air conditioning system retrofit kits. Do we end our process there? Hell no. The most crucial fact about us that you should be aware of is that we regularly update our website with current and pertinent information. We have one more layer of filtration since we place the greatest importance on reader satisfaction. Please let us know if any product included here is incorrect, irrelevant, subpar, or simply out of date. We always value your opinions, and we’ll work hard to make any necessary corrections to our list in response to them.

Why should you believe us?

There are now thousands of possibilities for these products on Amazon, but choosing the best one can be difficult and time-consuming. And what automotive air conditioning system retrofit kits should you purchase in 2022?

This guide is the result of more than 10 years of experience in researching, testing and writing about many topics. Each member of our team is an authority in their area. We read every article we could find online and every consumer review on every retail website for seven hours. Additionally, we discovered a ton of websites that offered helpful resources, including buying tips and thorough information on automotive air conditioning system retrofit kits.