🧽 Clean smarter, not harder—Mastercool flushes your A/C to perfection!
Mastercool 91049-128-4 is a powerful solvent-based flush designed to quickly remove debris and sludge from A/C components. It evaporates rapidly without leaving any residue and is safe for O-Rings, ensuring thorough cleaning without damage. Packaged in a 4-pack of 1-gallon bottles, this USA-made product is ideal for professional-grade HVAC maintenance.
| Manufacturer | Mastercool |
| Brand | Mastercool |
| Model | 91049-128-4 |
| Item Weight | 8.83 pounds |
| Product Dimensions | 13 x 12 x 12 inches |
| Country of Origin | USA |
| Item model number | 91049-128-4 |
| Manufacturer Part Number | 91049-128-4 |
| Special Features | No Residue |
J**.
It works
Worked very well and saved money on the gal. Size
K**S
Works Fine
I just flushed the lines and front Evap Core from a 2010 Dodge Grand Caravan. Fluid cleans well and evaporates fast. Evap Core was plugged, this flush broke through the plug very quickly. I didn't get any residual oily film like other users have reported. It did the job it's designed to do and did it well.
B**D
great product, poor delivery
great product, poor delivery, this stuff is basically alcohol and acetone with some other chemicals..., delivery gave it upside down and lost 1/4 that destroyed the box and neighbors in this complex didn't appreciate it, but not this company's fault, just the inept driver...
L**N
Not a good cleaner
Used half a gallon. Wiped the inside of the line and there was dirt. Seemed to have an oil.
G**T
Worked great will order again
This product thoroughly cleaned the AC system I was working on, I do recommend this product
M**S
Well, I feel stupid.
I think I just paid $60 for a gallon of kerosene. Looks like kerosene, smells like kerosene, feels and acts like kerosene. Must be kerosene? Doesn't evaporate so quickly either. I did use it and it did flush out the old oil. Seems to have done an adequate job. I was expecting something more like brake clean.
E**.
Great Purchase
Great Purchase
B**E
Bought for it's use, but nope.
Bought it for use in a whole renewal of an AC car system by mechanics at a shop. Informed by the mechanic that it totally sucked when doing a flush after the parts were put in. Mechanics had to buy a new, different, way better ac flush fluid. Wasted much money for the buy of this fluid and costed me much more time/days to wait for better fluid to come in for the shop to finish the car repair.
Trustpilot
1 week ago
2 weeks ago
