15% OFF ORDERS $35+ | 20% OFF $100+ | ONLINE ONLY
USE CODE
CRUISE
*
Exclusions apply.
Advance Auto Parts Logo
Choose a Store
  • Shop All
  • Replacement Parts
  • Performance Parts
  • Accessories
  • Oil & Fluids
  • Special Offers
  • Advance Rewards
  • Advice & How-Tos
  • Project Guides
  • FAQ / Help Desk
Loading...
Share
Product thumb
Product main large

Certified A/C Pro AC Flush and Clean - 32 oz - Powerful Cleaning for Your System

(28 reviews)
Part # CQS-11
30 day warranty
Loading...
Loading...
How Would You Like To Get This Item?

Store Pickup

Loading...Loading...Loading...

Same Day Home Delivery

Loading...Loading...Loading...

Home Delivery

Loading...Loading...Loading...
Loading...
Loading...
Loading...Loading...Loading...Loading...Loading...

Product Information

Product Details
Part No. CQS-11
Warranty Details (30 Day Warranty)
Certified A/C Pro Flush & Clean Solvent Based is a fast drying automotive A/C flush solution that effectively cleans R-134a A/C systems.

Product Features:
  • Removes debris and sludge from A/C components
  • A/C flush solution that effectively cleans R-134a A/C systems
  • Solvent-based
  • Fast-drying evaporates quickly
  • Leaves no residue
Specifications
Container Size:
1 qt

Container Type:
Plastic

Refrigerant Type:
R134A
Loading...
Loading...Loading...Loading...Loading...Loading...
4.46 out of 5
28 Customer Reviews
88% of respondents would recommend this to a friend
Ratings Distribution
5 Stars
22
4 Stars
1
3 Stars
2
2 Stars
2
1 Star
1
Use as needed and store the restUse as needed and store the rest
Pros
3
Easy To Use
1
Very Easy And Efficient
1
Plenty Of Flushing Power
Cons
1
Need Air Compressor
1
Does Not Evaporate
1
Takes 3 Hands
Best Uses
1
Ac System Flush
1
Large Cars
1
Small Cars
1
Trucks
1
Flush Ac System
Car & Truck
1
Truck Enthusiast
Car/Motorcycle Describe yourself
2
Mechanic
1
Auto Enthusiast
1
Casual Driver
Most Liked Positive Review
Good Basic Flush
This is a good basic flush for removing oil and small debris from lines and components. It is a much better deal than aerosol flushes, but you must have your own gear to flush with. It smells great too (orange) I received comments about how good my shop smelled after I finished the job. There are more powerful flushes out there, but they cost much more making this a great value for basic work.
Most Liked Negative Review
tricky to use, does not evaporate quickly
The solvent is citrus based, and while it does seem to cut the oil and sludge well, it does not evaporate as I was expecting. It's not like brake cleaner or other VOC-based cleaner. Also, the container has a strange cap that I probably didn't use correctly, as I had to remove it with a screwdriver to get anything to dispense. The dispensing is through a flexible hose with a fat rubber end piece. The end was too large to fit inside pipes I was flushing, requiring me to hold the pipe, hold the end piece against it, and try to push the valve with my elbow. A solid hose (like on a can of Gumout) would have worked better.
Reviewed by 28 Customers
Good Basic Flush
Staff Reviewer -
This is a good basic flush for removing oil and small debris from lines and components. It is a much better deal than aerosol flushes, but you must have your own gear to flush with. It smells great too (orange) I received comments about how good my shop smelled after I finished the job. There are more powerful flushes out there, but they cost much more making this a great value for basic work.
Bottom Line Yes, I would recommend to a friend
Use as needed and store the rest
Staff Reviewer -
Pour into A/C lines when off and compress air will run fluid thru and clean out any debris. dries fast too!
Bottom Line Yes, I would recommend to a friend
Not an effective cleaner for AC lines.
Verified Buyer -
Not sure this actually did anything for my system. My AC compressor came apart and left a thick residue through the entire system. I replaced compressor, evaporator expansion valve, and receiver/dryer. I used this to clean out lines, but even after agitating the lines, letting them soak for a few days and blowing out with air then repeating, there was still metal particle sludge in the lines. Same for the evaporator (which is why I replaced it). I ended up going back to my old stand by of brake cleaner to get it out. Just felt the need to let them sit unsealed for a few days to let all the cleaner evaporate.
Wouldn't buy again
Verified Buyer -
Works but you need to apply air pressure to clear lines
Lots of work to use this system
Verified Buyer -
It calls for removing each line and part and flushing separately. Did not want to take the system completely apart. Do not know when I will use it.
Loading...
Loading...Loading...Loading...Loading...Loading...
No results
Loading...
Loading...Loading...Loading...Loading...Loading...
Feedback
Be The First To Know About Deals And Promotions.
Plus, create an account to receive $5 off of $20 or more.
TOP REPLACEMENT PARTS
Brake Pads & Shoes
Brake Rotors
Alternators
Water Pumps
Starters
Brake Calipers

Order Lookup

Help Desk

Store Locator

In Store Services

Mobile App

CUSTOMER SUPPORT
Accessibility Statement
Contact Us
Forgot Password
Help Desk
In Store Pickup
In Store Services
Order Tracking
Recall Information
Return Policy
Same Day Delivery
© 2026 Advance Auto Parts
Privacy Policy
Terms of Use
Site Map
ADVANCING A WORLD IN MOTION®