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🧪 Flush out the old, power up the new — clean systems, clear wins!
The NU CALGON 4300-09 RX-11 Flush Kit is a professional-grade solvent designed to thoroughly clean 3-4 ton refrigeration and air conditioning systems. Its patented HFC-based formula effectively removes sludge, carbon residue, oils, acids, and particulates, making it ideal for post-burnout flushes, retrofits, and R-410A conversions. Non-toxic, non-flammable, and ozone-friendly, this flush kit ensures safe, eco-conscious maintenance while restoring system efficiency.
| Best Sellers Rank | #230,415 in Automotive ( See Top 100 in Automotive ) #514 in Air Conditioning Line Repair Tools |
| Customer Reviews | 4.1 out of 5 stars 31 Reviews |
J**G
magic stuff
Stuff is magic, dissolves everything.
B**R
Great price
This product works as it should and is a great price!
B**N
This is not required nor is it recommended to be used by equipment manufacturers
This is not required nor is it recommended to be used by equipment manufacturers. If you do choose to use this special procedures are needed as the chemicals left over can cause acid build up and compressor failure in new equipment.
D**F
Excellent product
Great product. Excellent Quality and very good. Will buy again when I need to.
J**0
Works as Expected
Followed the manufactures instructions and it did the job! Is enough for 2 - 5 ton units use entire can.
W**N
Only works for flushing pipe down with gravity.
This is only useable if you flush pipe with gravity. If you inject upward, it will flow back to you and you wont like the chemical in your room.
Trustpilot
2 months ago
2 months ago