---
product_id: 729711602
title: "FOUR UNCLES AC FLASH KIT Air Conditioning System Flash Canister Kit Clean Tool Set for R134a R12 R22 R410a R404a Car"
brand: "four uncles"
price: "$158.27"
currency: USD
in_stock: true
reviews_count: 6
category: "Four Uncles"
url: https://www.desertcart.us/products/729711602-four-uncles-ac-flash-kit-air-conditioning-system-flash-canister
store_origin: US
region: United States of America
---

# Up to 174 PSI working pressure Reusable & corrosion resistant Stainless steel durable canister FOUR UNCLES AC FLASH KIT Air Conditioning System Flash Canister Kit Clean Tool Set for R134a R12 R22 R410a R404a Car

**Brand:** four uncles
**Price:** $158.27
**Availability:** ✅ In Stock

## Summary

> ❄️ Keep your cool with the ultimate AC flush kit—because clean systems mean chill vibes!

## Quick Answers

- **What is this?** FOUR UNCLES AC FLASH KIT Air Conditioning System Flash Canister Kit Clean Tool Set for R134a R12 R22 R410a R404a Car by four uncles
- **How much does it cost?** $158.27 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.us](https://www.desertcart.us/products/729711602-four-uncles-ac-flash-kit-air-conditioning-system-flash-canister)

## Best For

- four uncles enthusiasts

## Why This Product

- Trusted four uncles brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Built to Last:** Heavy-duty stainless steel canister resists corrosion & leaks for years
- • **Complete Pro Kit:** Includes hose & dual adapters for USA & European fittings—ready for any job
- • **Effortless Operation:** Simple fill, attach & flush design saves time and hassle
- • **Universal Compatibility:** Works seamlessly with R134a, R12, R22, R410a & R404a systems
- • **Precision Cleaning Power:** Flush out moisture, acids & contaminants for peak AC performance

## Overview

The FOUR UNCLES AC Flash Kit is a professional-grade air conditioning flush tool designed to remove refrigerant oil, debris, moisture, and acids from automotive AC systems. Compatible with multiple refrigerants (R134a, R12, R22, R410a, R404a), it features a durable stainless steel canister rated for up to 174 PSI, reusable components, and includes hoses and adapters for both USA and European fittings. Ideal for compressor replacements or retrofits, this kit ensures efficient, thorough cleaning to restore optimal cooling performance.

## Description

Is your air conditioner dirty and difficult to clean thoroughly? Our Air Conditioner System Flash Kit will definitely be a great helper for you. This complete flush kit is perfect for quickly and effectively removing refrigerant oil and debris during aftermarket or compressor replacement. Product Features: Ideal for quick and effective refrigerant oil and debris before replacing compressor or or modification systems. Designed for use with all light weight A/C flashing materials EASY TO USE - Simply fill the canister and press each component to flush. Technical Specifications: Material: Stainless steel bottle, rubber hose, pure copper valve. Hose length: 2 feet Pressure: 0-174 psi, 0-12 bar Volume: 33.8 fl oz (1,000Working pressure: 1 Mpa (10 kgf/cm²) Adapter Connection: 1/4 SAE (1 Yellow), 1/4 NPT (Silver One) Package included: 1 x Canister (Empty) 1 x Hose 2 x Nozzles (including USA fitting and European fitting) 1 x Canister Adapter

Review: 届いてからしばらく使う機会がなかったが、自社の車に使用しました。 汚れもとれ、以前より冷えるようになりました。 某メーカーとほぼ同じ物ですね。
Review: Why did you pick this product vs others?: I own a 1993 Ford F-150 and had an AC issue that led me to converting system from R12 to R134a. I certainly wanted R12 mostly to make things easier, it cools far better and the OEM components were made to accommodate R12 and not R134a, so it's not as efficient. The issue I had was that the desiccant in the accumulator/dryer broke apart and clogged the orifice tube. I was sure that some of it found its way to other components throughout the system. I rented a compressor from one of the big box home stores, purchased several courts of AC flush, and finally, this unit to connect to the compressor so that the flush is forced out under high pressure. I replaced the compressor just to be safe so I don't have to clean it, so I focused my energy on the lines, condenser and evaporator. It's a messy job no matter how hard you try to make it not so. You're refilling bottles, changing from bottle to air nozzle, it's just a mess. Luckily, the cleaner is essentially just that, a cleaner with a citrus smell so it's easy enough to rinse off if you want, or just let it evaporate. The Four Uncles tool isn’t absolute necessity if you intend to flush components, but it no doubt improves the results. I flushed the evaporator so many times and re-used some of the flush after it's settled. I was much more concerned about the desiccant versus oils or anything like that. I may have to break the system open again and replace the orifice to again, as it should trap any remaining desiccant within this system. For now, it's working as well as can be expected. Pressures are where they need to be, but it definitely does not cool as well as the R12 well did. If I notice any fall off or other issues that will expedite breaking the system open again. Depending on what I find, I may use this tool again to perform another flush.

## Features

- Designed to wash away impurities: Use our Auto Air Conditioner Flash Kit to wash out the car after the compressor burns out to remove moisture, acids, and contaminants
- VERSATILE FOR YOUR NEEDS: Quickly and efficiently removes old refrigerant oil and debris before replacing or retrofitting your compressor system. Designed to work with all light duty AC system flash solvents (not included). Can also be used to clean refrigerator lines and household line sets
- EASY TO USE FLUSHING SYSTEM: Simply fill the AC Flash Tool Canister with a lightweight AC Flash Solvent (not included) and tighten the fitting into the canister. Attach to air compressor (sold separately) and turn on valve switch. Do not exceed 150 PSI. Instructions included for your convenience
- DURABLE AND REUSABLE: The air conditioning system flash kit is made of thick stainless steel canisters that will not leak. The canister is high pressure, corrosion resistant, and long lasting. Canisters are reusable and will stand up to years of wear and tear
- Package includes: 1 empty canister, 1 hose (3 feet), 2 adapters (1 USA fitting, 1 European fitting), replacement part

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B07T7MZ8L5 |
| Amazon Bestseller | #233,068 in Automotive ( See Top 100 in Automotive ) #1,437 in Oil System Tools |
| Batteries Included | No |
| Customer Reviews | 4.5 4.5 out of 5 stars (1,328) |
| Date First Available | July 29, 2019 |
| Golf Shaft Material Type | Brass |
| Model Number | QP008 |
| Package Dimensions | 27.41 x 16.51 x 10.39 cm; 930 g |

## Product Details

- **Brand:** FOUR UNCLES
- **Included Components:** Gun Cleaning Kit Components Included
- **Liquid Volume:** 1000 Milliliters
- **Manufacturer:** FOUR UNCLES

## Images

![FOUR UNCLES AC FLASH KIT Air Conditioning System Flash Canister Kit Clean Tool Set for R134a R12 R22 R410a R404a Car - Image 1](https://m.media-amazon.com/images/I/61AyzbAoTbL.jpg)
![FOUR UNCLES AC FLASH KIT Air Conditioning System Flash Canister Kit Clean Tool Set for R134a R12 R22 R410a R404a Car - Image 2](https://m.media-amazon.com/images/I/71JoOvJNXDL.jpg)
![FOUR UNCLES AC FLASH KIT Air Conditioning System Flash Canister Kit Clean Tool Set for R134a R12 R22 R410a R404a Car - Image 3](https://m.media-amazon.com/images/I/71yO8HKKM8L.jpg)
![FOUR UNCLES AC FLASH KIT Air Conditioning System Flash Canister Kit Clean Tool Set for R134a R12 R22 R410a R404a Car - Image 4](https://m.media-amazon.com/images/I/71wz0D5AFSL.jpg)
![FOUR UNCLES AC FLASH KIT Air Conditioning System Flash Canister Kit Clean Tool Set for R134a R12 R22 R410a R404a Car - Image 5](https://m.media-amazon.com/images/I/71DbE5k2bIL.jpg)

## Questions & Answers

**Q: What is the working psi? can the can hold 200psi without leaks or damage?**
A: I don't think 200PSI will do you much good if trying to flush an AC system. At that pressure, you'll push all the contents out in a second or two, which is not the point. You need to slow it down, give the solution a little time to scrub affected areas. I generally cut the pressure to around 40 psi and watch what comes out into a scrupulously clean catch bucket. If ANYTHING shows up, clean out the bucket and refill the canister for another run. Even so, it usually takes 1-3 fills of the canister until you can get a batch that's PERFECTLY clean. Even at that pressure, it will go through a lot of solvent in a very short time as it discharges only a steady stream. In order to extend the time and cleaning effectiveness of a batch, I drilled the tiniest possible hole into the discharge cavity of the top cap. Being above liquid line, it now mixes incoming air with the discharge making a spray instead of a stream. This increases the turbulence of the solvent discharged and improves cleaning action. Much more effective, wastes a lot less solvent. At 200 PSI everything would be blown out of the capture bucket, you'd never know it it was clean or not. Once you get a clean batch, crank up the pressure to about 60-80PSI and let it blow for about a half hour (takes a pretty good compressor to free blow a line at that pressure for that long) to evaporate any traces of solvent that might remain, for these chemicals do not play nice with your compressor. But to answer your question, there is a pressure relief disk that will rupture at high pressure. Warnings on box say do not exceed 150 PSI.

**Q: What type of cleaner do you use to flush the AC system? Thank you**
A: I used "Super Cool Air Conditioning Fast Flush ". Worked fine for me, in my 1979 Toyota (R12 system).
Note: Some complaints about the rubber nozzle. When I first used it, cleaner was spraying all over the place. To solve that problem, I purchased a "Compressor set up kit" from the home center big box store. It came with a smaller nozzle which worked great, and several other items (like a tire pressure gauge, basket ball inflator fitting, etc.).

**Q: Is a pancake style compressor such as the Porter Cable able to be used for this?**
A: This is an air charged refillable pressure bottle. Any air compressor that can charge the bottle to recommended pressure will work.

**Q: How do i use this to flush my home ac water drain pipes? I received this item but it seems i need something else. Do i need an actual air compressor?**
A: Only use dry nitrogen to clear your refrigerant lines. If you use an air compressor you will add water vapor to the lines which all have to be removed with a vacuum pump. Dont buy this unless you know what its used for

## Customer Reviews

### ⭐⭐⭐⭐⭐ Review
*by 安***次 on October 12, 2025*

届いてからしばらく使う機会がなかったが、自社の車に使用しました。 汚れもとれ、以前より冷えるようになりました。 某メーカーとほぼ同じ物ですね。

### ⭐⭐⭐⭐⭐ Review
*by M***A on July 5, 2025*

Why did you pick this product vs others?: I own a 1993 Ford F-150 and had an AC issue that led me to converting system from R12 to R134a. I certainly wanted R12 mostly to make things easier, it cools far better and the OEM components were made to accommodate R12 and not R134a, so it's not as efficient. The issue I had was that the desiccant in the accumulator/dryer broke apart and clogged the orifice tube. I was sure that some of it found its way to other components throughout the system. I rented a compressor from one of the big box home stores, purchased several courts of AC flush, and finally, this unit to connect to the compressor so that the flush is forced out under high pressure. I replaced the compressor just to be safe so I don't have to clean it, so I focused my energy on the lines, condenser and evaporator. It's a messy job no matter how hard you try to make it not so. You're refilling bottles, changing from bottle to air nozzle, it's just a mess. Luckily, the cleaner is essentially just that, a cleaner with a citrus smell so it's easy enough to rinse off if you want, or just let it evaporate. The Four Uncles tool isn’t absolute necessity if you intend to flush components, but it no doubt improves the results. I flushed the evaporator so many times and re-used some of the flush after it's settled. I was much more concerned about the desiccant versus oils or anything like that. I may have to break the system open again and replace the orifice to again, as it should trap any remaining desiccant within this system. For now, it's working as well as can be expected. Pressures are where they need to be, but it definitely does not cool as well as the R12 well did. If I notice any fall off or other issues that will expedite breaking the system open again. Depending on what I find, I may use this tool again to perform another flush.

### ⭐⭐⭐⭐⭐ Review
*by D***D on September 28, 2025*

I do a/c , and this is perfect no need for an expensive brand, the quality on this is great 👌

## Frequently Bought Together

- FOUR UNCLES AC Flush Kit - Air Conditioner System Cleaning Tool Set with Stainless Steel Canister and Nylon Hose & Flushing Spray Gun for R134a R12 R22 R410a R404a
- Supercool TSI FFQ High-Temp A/C Flush, 32 fl. oz. (Flash Point Greater Than 250 F), White
- TSI Supercool A/C Comp Lube, UV Dye, 8 Oz, Flsh PNT 442 F, red/Yellow Tint (P46-8D)

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*Product available on Desertcart United States of America*
*Store origin: US*
*Last updated: 2026-03-09*