Front perspective view of the Klein Tools ET180 Digital Differential Manometer featuring two tapered stainless steel pressure ports. The professional HVAC tester is housed in a rugged orange and black casing with a large digital display and intuitive control buttons for static and differential pressure measurement.
Product feature graphic for the Klein Tools ET180 manometer highlighting its ability to measure static and differential pressure in air and gas systems. Text callouts emphasize the large backlit LCD, 2-meter drop protection, and a strong integrated magnet on the back for hands-free operation.
Feature list for the Klein Tools ET180 including a data hold button, maximum/minimum/average value calculations, and an auto-power off function. The graphic notes that the kit includes silicon tubing, batteries, and a protective storage pouch for the digital pressure gauge.
Close-up detail of the top of the ET180 highlighting the dual tapered stainless steel ports. The image includes text specifying that the ports securely fit hoses ranging from 1/8 inch to 5/16 inch in diameter, essential for standard HVAC pressure testing.
Full view of the Klein Tools ET180 digital manometer connected to a long coil of flexible silicon tubing. The clear display shows a 0.00 reading, illustrating the device's readiness for high-accuracy HVAC airflow and gas pressure diagnostics.
A complete product kit layout for the ET180 featuring the digital differential manometer, a 6.56-foot coil of silicon tubing, three AAA alkaline batteries, and a durable black padded carrying pouch with orange accents.
Top-down view of the Klein Tools ET180 focusing on the P1 and P2 pressure ports. The tapered stainless steel connectors are clearly labeled, demonstrating the high-quality construction required for reliable vacuum and pressure measurements.
Rear view of the digital manometer showcasing the integrated mounting magnet. The orange housing features clearly marked safety and certification icons, emphasizing the "Klein Tough" build quality designed for professional mechanical environments.
Action shot of a technician using the ET180 to measure gas manifold pressure in a residential furnace. The meter is held in one hand, connected via silicon tubing to the gas valve, and displays a clear measurement of 3.50 inH2O on its bright backlit blue screen.
Action shot demonstrating the hands-free capability of the Klein Tools ET180. The digital manometer is secured to a galvanized steel air duct via its internal magnet, allowing the technician to use both hands to manipulate the pressure probe during a static pressure test.
Action shot of a professional technician using the Klein Tools ET180 Digital Manometer to measure static pressure in a galvanized metal air duct. The technician is shown inserting a pressure probe connected via flexible silicon tubing, while the meter's backlit display provides a real-time reading of 0.14 inH2O, essential for HVAC system balancing.
Close-up of the Klein Tools ET180 manometer being used to troubleshoot an HVAC furnace system. The meter is secured to the metal furnace cabinet using its integrated rear magnet, providing hands-free operation while measuring gas manifold pressure through a silicon tube connection, showing a clear reading of 9.80 on the backlit blue display.
Digital Differential Manometer, ET180 promotional how to video
Front perspective view of the Klein Tools ET180 Digital Differential Manometer featuring two tapered stainless steel pressure ports. The professional HVAC tester is housed in a rugged orange and black casing with a large digital display and intuitive control buttons for static and differential pressure measurement.
Product feature graphic for the Klein Tools ET180 manometer highlighting its ability to measure static and differential pressure in air and gas systems. Text callouts emphasize the large backlit LCD, 2-meter drop protection, and a strong integrated magnet on the back for hands-free operation.
Feature list for the Klein Tools ET180 including a data hold button, maximum/minimum/average value calculations, and an auto-power off function. The graphic notes that the kit includes silicon tubing, batteries, and a protective storage pouch for the digital pressure gauge.
Close-up detail of the top of the ET180 highlighting the dual tapered stainless steel ports. The image includes text specifying that the ports securely fit hoses ranging from 1/8 inch to 5/16 inch in diameter, essential for standard HVAC pressure testing.
Full view of the Klein Tools ET180 digital manometer connected to a long coil of flexible silicon tubing. The clear display shows a 0.00 reading, illustrating the device's readiness for high-accuracy HVAC airflow and gas pressure diagnostics.
A complete product kit layout for the ET180 featuring the digital differential manometer, a 6.56-foot coil of silicon tubing, three AAA alkaline batteries, and a durable black padded carrying pouch with orange accents.
Top-down view of the Klein Tools ET180 focusing on the P1 and P2 pressure ports. The tapered stainless steel connectors are clearly labeled, demonstrating the high-quality construction required for reliable vacuum and pressure measurements.
Rear view of the digital manometer showcasing the integrated mounting magnet. The orange housing features clearly marked safety and certification icons, emphasizing the "Klein Tough" build quality designed for professional mechanical environments.
Action shot of a technician using the ET180 to measure gas manifold pressure in a residential furnace. The meter is held in one hand, connected via silicon tubing to the gas valve, and displays a clear measurement of 3.50 inH2O on its bright backlit blue screen.
Action shot demonstrating the hands-free capability of the Klein Tools ET180. The digital manometer is secured to a galvanized steel air duct via its internal magnet, allowing the technician to use both hands to manipulate the pressure probe during a static pressure test.
Action shot of a professional technician using the Klein Tools ET180 Digital Manometer to measure static pressure in a galvanized metal air duct. The technician is shown inserting a pressure probe connected via flexible silicon tubing, while the meter's backlit display provides a real-time reading of 0.14 inH2O, essential for HVAC system balancing.
Close-up of the Klein Tools ET180 manometer being used to troubleshoot an HVAC furnace system. The meter is secured to the metal furnace cabinet using its integrated rear magnet, providing hands-free operation while measuring gas manifold pressure through a silicon tube connection, showing a clear reading of 9.80 on the backlit blue display.
Digital Differential Manometer, ET180 promotional how to video
KLEIN TOOLS

Klein Tools Manometer ET180 Digital Differential HVAC Gas Pressure Tester (Dual Port Stainless Steel 60 inH2O Backlit LCD Rear Mounting Magnet Pouch)

Only 2 left
SKU: ET180
$129.99 USD

Description

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Track Static Air Distribution Losses and Balance Furnace Manifold Pressures Instantly with Hands Free Magnetic Dual Port Transduction

Shop the Klein Tools ET180 digital differential manometer engineered to audit air and gas pressure gradients across commercial ventilation networks. This dual-port diagnostic tester tracks differential variables between Port 1 and Port 2 within an operational boundary up to 60 inH2O and a maximum safety limit of 2.16 PSI. Integrating 11 selectable engineering scales, a heavy-duty rear mounting rare-earth magnet, and an advanced calculation chip, it isolates structural static pressure leaks and valve tracking errors inside tight sheet metal furnace enclosures.

Best Used For:

  • Gas Manifold Calibration: Interfacing the tapered stainless steel inputs with furnace valves to adjust operating metrics between 0 and 2.16 PSI.
  • Duct Static Surveys: Running structural air distribution checks across supply and return branches to trace airflow resistance trends.
  • Ventilation Balancing: Monitoring micro-pressure differentials in commercial air handlers to balance structural indoor climate distribution logs.

Key Performance & Safety Features

  • Dual Port Transduction: Dual inputs capture separate localized static pressure lines concurrently to deliver real-time differential values.
  • 11 Engineering Scales: Toggles manually between inH2O, bar, oz/in2, psi, mbar, kPa, inHg, mmHg, kg/cm2, ftH2O, and cmH2O metric benchmarks.
  • Rear Mounting Magnet: Rare-earth magnetic backing plate anchors the chassis safely onto iron furnace cabinets for clear hands-free adjustment.
  • Real-Time Data Logs: Onboard logic modules aggregate maximum, minimum, and moving average baseline values to streamline troubleshooting sweeps.
  • Illuminated Digital Monitor: High-definition liquid crystal interface populates illuminated character fields to conquer visibility barriers inside dark attics.

What's Included

  • ET180 Digital Differential Manometer
  • 6.56-Foot (2 m) Silicon Tubing (1/8-inch ID)
  • Three AAA Alkaline Batteries
  • Protective Storage Pouch
  • Instruction Manual

Technical Specifications

Monitored Pressure Span: ±60 inH2O
Maximum Safe Pressure: 2.16 PSI
Full Scale Accuracy: ±1.5% Full Scale
Input Port Quantity: 2 (Tapered Stainless Steel Ports)
Connector Fitting Scale: 1/8-inch to 5/16-inch
Thermal Operational Band: 32° to 122°F
Display Interface Profile: Backlit LCD Digital Screen
Power Source Requirements: 3 x AAA Batteries (Included)
Chassis Compound Material: ABS Plastic and Stainless Steel
Tester Chassis Length: 6.19 Inches
Tester Chassis Width: 2.47 Inches
Net Operating Weight: 7.2 oz.
Pro-Tip: Before opening gas valves to verify furnace manifolds, disconnect the lines and push the zero button with your inputs open to air; this steps calibrates local atmospheric references to guarantee absolute transducer precision.