A leading manufacturer of professional air conditioning, refrigeration, service tools, and equipment for the automotive and HVAC/R industries.
Mastercool Inc. is a family-owned and operated manufacturer that has served the professional air conditioning and HVAC/R industry for over 40 years. Based in Randolph, New Jersey, the company is recognized for its comprehensive line of service tools, including refrigerant recovery machines, vacuum pumps, leak detectors, and manifold gauge sets. Mastercool emphasizes innovation and quality, holding numerous patents worldwide for its advanced diagnostic and service technologies.
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Technical support is available by contacting Mastercool directly at (973) 252-9119 or via email at techs@mastercool.com.
You can register your product and view warranty details on the official Mastercool Warranty page found on their website.
On models like the 55975, conditions such as excessive air turbulence, accidental touching of the probe tip, or blowing directly into the sensor can trigger the interference detector to prevent false alarms.
Mastercool vacuum pumps typically require high-quality deep vacuum pump oil. Refer to your specific model's manual for viscosity requirements (often ISO 46).