TEST PRODUCTS INTERNATIONAL 753A Refrigerant Leak Detector 16 in Probe .1 oz/yr
Detects refrigerant leaks down to 0.1 oz/yr with a 16-inch probe for all common refrigerants including R-404A, R-410A and R-507
- Detects leaks as small as .1 oz/yr
- 16 in probe reaches tight service ports
- Compatible with 404A, 410A and 507 refrigerants
- Powered by 2 C alkaline batteries for portability
- Includes replacement sensor for extended service life
Precision Leak Detection
The TEST PRODUCTS INTERNATIONAL 753A is a handheld refrigerant leak detector built for HVAC technicians and automotive specialists. It identifies leaks across all common refrigerants and blends with a sensitivity of .1 oz/yr. The 16 in probe reaches tight coils and fittings without dismantling surrounding components. Power comes from two alkaline C cells for cordless operation on site.
Upgrade From Soap Tests
This detector replaces bubble solutions and UV dye kits that only reveal large, visible leaks. The jump is worth it when you must find micro-leaks in charged systems without adding dye or waiting for bubbles to form. It covers R-404A, R-410A and R-507 along with legacy refrigerants in a single pass. A replacement sensor is included so the tool stays calibrated without extra procurement.
Sustained Field Performance
Under continuous scanning the sensor maintains its .1 oz/yr threshold without the drift common in heated-diode models after prolonged exposure. Battery voltage drops gradually rather than cutting out, giving predictable runtime across a full workday. The probe tip resists contamination from oil and moisture, reducing false alarms during extended use. Replacing the sensor restores original sensitivity in minutes.
Highlights
- Detects leaks as small as .1 oz/yr
- 16 in probe reaches tight service ports
- Compatible with 404A, 410A and 507 refrigerants
- Powered by 2 C alkaline batteries for portability
- Includes replacement sensor for extended service life
Specifications
| Brand | TEST PRODUCTS INTL. |
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Questions about this item
What probe length does the 753A use for reaching tight HVAC fittings?
The unit includes a 16 in probe that extends the sensor into confined ductwork and coil areas.
How is the detector powered and what common mistake should be avoided during setup?
It runs on 2 C alkaline batteries; install them with correct polarity before first use or the sensor will not warm up.
When should the included replacement sensor be swapped into the 753A?
Replace the sensor when the audible or visual leak indication becomes inconsistent or fails to trigger on a known .1 oz/yr test leak.
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