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Item #:
35856270
Mastercool 91049-128 1 Gallon A/C Flush Solvent
87% of respondents would recommend this to a friend
Item #:
35856270
USD 69
Price Details
Excluding Shipping & Custom charges ( Shipping and custom charges will be calculated on checkout )
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In stock
Imported from USA store
QTY:
Only 14 items left in stock.
Order now and get it around Friday, September 11
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Effectively removes debris and sludge from A/C components.
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What Stands Out
Efficient Cleaning
Mastercool 91049-128 offers a powerful solvent for efficient flushing of HVAC systems, ensuring optimal performance and longevity by removing dirt and debris.
Versatile Use
Suitable for various applications, this flush solvent is ideal for automotive, refrigeration, and air conditioning systems, making it a versatile choice for professionals and DIY enthusiasts alike.
High Capacity
With a 1-gallon container, Mastercool's flush solvent provides ample supply for multiple jobs, delivering excellent value without compromising on quality or effectiveness.
Product Details
Product Technical Details
| Manufacturer | Mastercool |
| Brand | Mastercool |
| Model | 91049-128 |
| Item Weight | 6.8 pounds |
| Product Dimensions | 10.5 x 5.5 x 5.5 inches |
| Item model number | 91049-128 |
| Manufacturer Part Number | 91049-128 |
What's in the box
1 gal plastic bottle
Who Should Buy?
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Automotive Technicians
Ideal for mechanics needing effective solvent for flushing cooling systems in vehicles, ensuring thorough cleaning and optimal performance.
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HVAC Professionals
Perfect for HVAC technicians looking to clear debris and contaminants from refrigerant lines during routine maintenance and repairs.
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DIY Enthusiasts
Great for hobbyists working on automotive or HVAC projects at home, providing an easy solution for flushing systems efficiently.
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Household Use
Not suitable for regular household cleaning tasks or surfaces, as it is specifically designed for industrial cleaning applications.
Product Description
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Customer Questions & Answers
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Question:
What is the Mastercool 91049-128 BlackYellow Flush Solvent used for?
Answer: The Mastercool 91049-128 Flush Solvent is specifically designed to clean HVAC systems, including air conditioning and refrigeration units. Its powerful formula removes contaminants and residual oils, ensuring that your system operates efficiently. This is vital for maintaining optimal performance, as clean components prevent blockages and potential failures. Using this solvent can be particularly beneficial during routine maintenance or before introducing new refrigerants, ensuring a fresh start for your HVAC system. -
Question:
Is the Mastercool flush solvent safe to use on all materials?
Answer: Yes, the Mastercool 91049-128 Flush Solvent is designed to be safe on a wide range of materials typically found in HVAC systems, such as metals and plastics. This versatility makes it a go-to choice for technicians who need a reliable cleaning solution. However, it's always a good idea to review the manufacturer’s specifications for compatibility with less common materials to avoid any adverse reactions. Understanding your system's components is essential for achieving optimal results. -
Question:
How do you apply the Mastercool flush solvent?
Answer: To apply the Mastercool 91049-128 Flush Solvent, you need to connect a flushing tool to the system. Begin by introducing the solvent into the lines, allowing it to circulate and break down impurities. Following the instructions on the label ensures effective cleaning. This efficient method is crucial in extending the lifecycle of your HVAC system. Often, technicians prefer to flush systems after major repairs or seasonal maintenance to maintain performance and efficiency. -
Question:
Can I use the Mastercool flush solvent for automotive applications?
Answer: While the primary use of the Mastercool 91049-128 Flush Solvent is for HVAC systems, it can also be effectively used for automotive HVAC systems. Its ability to eliminate grime and contaminants is especially useful in car air conditioning. Before application in an automotive context, ensure compatibility with vehicle components. This flexibility makes it an excellent choice for technicians who work in both home and automotive HVAC maintenance. -
Question:
What should I do if I accidentally spill the solvent?
Answer: In the event of a spill, it is essential to act quickly. First, absorb the solvent using an appropriate material like paper towels or absorbent pads. Dispose of the absorbed material according to local regulations. Ventilate the area to dissipate any fumes. Always wear gloves and other protective gear when handling the solvent to minimize skin contact and inhalation. This precaution is key to ensuring a safe work environment when using such potent cleaning solutions. -
Question:
Should I wear protective equipment when using this solvent?
Answer: Yes, when using the Mastercool 91049-128 Flush Solvent, wearing protective equipment such as gloves, goggles, and a mask is highly recommended. This solvent contains powerful cleaning agents that can irritate skin and eyes, and inhalation of vapors should be avoided. Taking these precautions ensures your safety while effectively handling the product. In professional settings, it's crucial to follow safety protocols to create a safe working environment. -
Question:
How long does it take for the solvent to work during flushing?
Answer: The flushing process with the Mastercool 91049-128 Flush Solvent typically takes around 15 to 30 minutes, depending on the level of contamination in the HVAC system. Allowing the solvent to circulate adequately during this time maximizes its effectiveness. After flushing, it’s advisable to rinse the system with clean refrigerant or nitrogen to clear any residual solvent. This ensures the system is entirely clean, promoting optimal performance and longevity. -
Question:
Is this solvent biodegradable?
Answer: The Mastercool 91049-128 BlackYellow Flush Solvent is formulated with environmental considerations, but it is best to check the product specifications for specific biodegradability details. While it is crafted to be less harmful to the environment than traditional solvents, proper disposal methods still apply. Being conscientious about how you handle and dispose of the product can reduce environmental impact. This is particularly relevant for technicians who prioritize sustainable practices in their services. -
Question:
Can I mix this flush solvent with other products?
Answer: It's not recommended to mix the Mastercool 91049-128 Flush Solvent with other cleaning agents or chemicals. Mixing substances can lead to unpredictable chemical reactions, which may pose safety hazards and reduce cleaning effectiveness. Always use this solvent as directed to achieve the best results. Work with one cleaning agent at a time to ensure that the components of your HVAC system are cleaned thoroughly and safely. -
Question:
Where can I buy Mastercool 91049-128 BlackYellow Flush Solvent, 1 Gallon in Puerto Rico?
Answer: You can purchase the Mastercool 91049-128 BlackYellow Flush Solvent, 1 Gallon from Ubuy, a reliable online store that offers this product in Puerto Rico. Ubuy stocks a wide variety of HVAC tools and supplies, making it easy for you to find what you need for maintenance and repair tasks. Their platform is user-friendly and provides fast access to quality products, contributing to a seamless shopping experience.
Mastercool Air Conditioning Line Repair Tools 91049-128 Editorial Review
Mastercool 91049-128 A/C Flush Solvent is a professional-grade automotive and HVAC/R system flush solvent that is fast-evaporating and leaves no residue, making it O-ring safe and non-flammable. With user reviews praising its effectiveness, many have found it cleans systems thoroughly, especially when used with a solvent spray kit. One customer highlighted its success in flushing out a clogged evaporator core quickly while avoiding residual oil, demonstrating its efficient and effective cleaning ability.
Customer Reviews & Ratings
143 customers ratings
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5 Star
73%
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4 Star
12%
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3 Star
4%
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2 Star
3%
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1 Star
8%
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Pros
- Fast-evaporating and leaves no residue
- O-Ring safe for various systems
- Effectively cleans clogged components
- Used with flush kits for optimal results
- Professional-grade for automotive applications
Cons
- Some users reported concerns about residual solvent
Platform Trust & Buyer Confidence
JG
Jazz
Verified buyer
“Easy to use and always helpful and sorts any issues I've had past and present”
1 September 2026 · via Trustpilot
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Emmanuel
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“I always receive support when I engage customer service. Overall my experience with UBUY has been top notch. Keep up the good work.”
31 August 2026 · via Trustpilot
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“The delivery was fast and the product came undamaged and authentic.”
29 August 2026 · via Trustpilot
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“Ubuy is extremely efficient and to order online is an easy process. The verity of products to buy is really unlimited! My order was urgent and I got it on time. The products are great! Thank you Ubuy!”
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Hengo
Verified buyer
“Fast, convenient and cheap. Great store!”
27 August 2026 · via Trustpilot
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USD 69
Order now and get it around Friday, September 11
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QTY:
Only 14 items left in stock.
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Fastest cross-border delivery
Features & Benefits
- Removes debris and sludge efficiently.
- Solvent-based formula ensures quick evaporation.
- Leaves no residue after use.
- Safe for O-Rings.
- Non-flammable and non-corrosive.
- Ideal for professional use in any A/C system.
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