Robinair 14777 Compact Electronic Thermistor Vacuum Gauge | 10-25,000 Micron
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Robinair 14777 Compact Electronic Thermistor Vacuum Gauge — 10 to 25,000 Micron
The Robinair 14777 is a compact pocket-sized electronic thermistor vacuum gauge designed for HVAC/R technicians who need accurate vacuum measurement during system evacuation. At 2.5" x 3", it is small enough to carry in a tool bag or pocket, and reads down to 10 microns — giving you the precision needed to confirm a true deep vacuum before releasing a system for refrigerant charge.
The LCD automatically registers smaller numeric segments as the system pulls down, making it easy to track evacuation progress at a glance. A 6-foot lead and magnetic mounting strip allow convenient, hands-free positioning during evacuation.
Important: System evacuation and refrigerant handling requires appropriate trade qualifications. Confirm licensing and compliance requirements with the relevant authority in your state or territory before undertaking refrigerant work.
Key Features
- Measuring range: 25,000 to 10 microns
- Thermistor sensor technology
- LCD with automatic segment scaling as vacuum deepens
- 6-foot lead for flexible positioning
- Magnetic mounting strip for hands-free attachment
- Vacuum fitting: 1/4" MFL
- Power: 9V battery (included)
- Compact pocket size: 2.5" x 3"
- 12-month manufacturer’s warranty
Best For
- HVAC/R technicians monitoring vacuum levels during system evacuation
- Confirming a true deep vacuum before releasing a system for refrigerant charge
- Technicians who need a compact, pocket-sized vacuum gauge with magnetic mounting
Check Before Ordering
- Vacuum fitting is 1/4" MFL — confirm compatibility with your vacuum pump and system service ports
- Thermistor sensors can be affected by oil contamination — protect the sensor from oil mist during use
- System evacuation requires appropriate trade qualifications — confirm licensing requirements in your state or territory
- Warranty: 12 months — confirm current terms at time of purchase
Frequently Asked Questions
What is the measuring range of the Robinair 14777?
25,000 to 10 microns. The LCD automatically scales as the vacuum deepens, making it easy to read at all stages of evacuation.
What fitting does the 14777 use?
1/4" MFL (male flare). Confirm compatibility with your vacuum pump and system service ports before ordering.
What is the warranty?
12-month manufacturer’s warranty. Confirm current terms with HVAC Trade Supply at time of purchase.
Browse our full vacuum gauge range or contact our team for advice on the right vacuum gauge for your application.