Imperial Tool 535C Kwik Charge Liquid Low Side Charger - Fast Liquid

In this review of the Imperial Tool 535C Kwik Charge Liquid Low Side Charger the bottom line is simple: refrigeration and HVAC technicians who need a safe, dependable way to add liquid refrigerant will find this unit saves time and reduces compressor risk. The reviewer found the device delivers a consistently faster charge than vapor methods and is designed for modern blended refrigerants like R-410A, making it a practical shop staple rather than a specialty gadget.

Key Features

• Fast charging: Charging rate is up to eight times faster than vapor charging, which significantly reduces service time on multiple jobs.
• Liquid compatibility: Accepts liquid refrigerant from the cylinder and discharges into the low side to meet requirements for blended refrigerants such as R-410A.
• Built-in check valve: The internal ball check valve opens for drawing an unrestricted vacuum so technicians can evacuate systems quickly without extra adapters.
• Safe metering: An internal metering element limits liquid flow to below compressor capacity, preventing damage during charge.
• Universal service: One charger services all units 1/2-ton or larger, simplifying tool selection for mixed fleets of equipment.
• Proven brand history: Imperial has been trusted by professionals since 1905, giving confidence in durability and parts support.

Who It's For

The 535C Kwik Charge is aimed squarely at refrigeration techs and HVAC contractors who regularly work with blended refrigerants and need to speed up turnaround on service calls. Shops that handle systems 1/2-ton and larger will benefit most from the single-tool coverage and reduced charge times.

It is less useful for hobbyists or very small residential jobs where portability and microcharging precision are the priority; those users may prefer small-capacity charging methods. Also, anyone who only ever performs vapor-only charges will not realize the full advantage of this liquid low side charger.

Pros & Cons

Pros

• Works well with R-410A and other blended refrigerants and greatly speeds up charging time.
• Built-in check valve and internal metering add safety when drawing a vacuum or adding liquid refrigerant.
• One unit services all systems 1/2-ton or larger, making it a versatile shop tool.

Cons

• Not ideal for very small or occasional residential jobs where vapor charging is sufficient.
• Requires basic familiarity with liquid charging procedures to get the safest, fastest results.

Specifications

Model	535C Kwik Charge
Charge type	Liquid low side charging
Compatible refrigerants	Blended refrigerants including R-410A
Service range	All units 1/2-ton or larger
Charging rate	Up to 8x faster than vapor charging
Safety features	Internal metering element and built-in check valve

Our Verdict

The Imperial Tool 535C Kwik Charge is a smart buy for professionals who need fast, reliable liquid charging for blended refrigerants. It reduces service time, protects compressors with internal metering, and covers a wide range of unit sizes, making it good value for busy shops that handle modern refrigerants.

Frequently Asked Questions

Can this unit be used with R-410A?
Yes. The 535C accepts liquid refrigerant and is suitable for R-410A and other blended refrigerants where liquid charging is required.

Will it work on small residential systems?
It is designed for systems 1/2-ton or larger; for very small residential systems a different charging approach may be more practical.

Does the device protect the compressor during charging?
Yes. An internal metering element reduces liquid flow to below compressor capacity, which helps prevent compressor damage during charge.