Manometer Digital Manometer Gas Pressure Tester Professional 12 Selectable Units Differential Manometer Gauge HVAC Air Pressure Meter with Large LCD Display Backlight, Data Record Funtion

I only needed it once to DIY repair a furnace ignitor switch. It was perfect and saved me time and $$$$ from flaky HVAC guys. It works well and is easy to use and who knows, I may need it again. I did have to DIY an tubing adaptor as this one was too small diameter for my ignitor switch.

I have a moderate level of technical skills and found this worked as described and was easy to set up and use. Can't speak for durability.

The digital gas manometer is a fantastic tool! It offers precise and reliable measurements, making it perfect for both professional and DIY projects. The easy-to-read display and intuitive controls ensure a smooth experience. It's durable and compact, making it convenient to carry around. Highly recommended for anyone needing accurate gas pressure readings!

It does everything easily but the material for the tubes is very thin and weak, tears easily and will need to be replaced after only a dozen uses. Other than that it's great for the price.

Worked well

comes with only one thread to hose barb. Why? The threads on the hose barb are BSP not NPT. Beware when you screw it in....

it's easy to use and seems to work well.

I needed to adjust the blower in my HVAC unit for proper airflow. A pro grade manometer cost ten times as much as this inexpensive one, so I figured I'd give it a shot first.It got the job done for me, but it is nowhere near the specs claimed. For HVAC work (in the US) you need the inches water column units (inH20.) The listing claims has a resolution of 0.01, which is perfect. Except it doesn't. The actual resolution is 0.04, and it reads zero until the pressure reaches 0.12 minimum. This makes it just barely usable for properly designed duct work.It has an easy to read display with a bright backlight if you need it.Takes 3 AAA batteries. Comes with three no-name non alkaline ones. Don't leave them in the meter when you put it away!Basic operation is pretty intuitive if you understand manometers. For some of the advanced features you will need the manual.One of the extra features is the ability to turn off the auto-off "feature". I wish everything came with that!The manual is very understandable. Way way better than the average import gobbledygook.The included latex tubing is 2 pieces of 3mm ID by 20 inches long. Fits very tightly on the meter ports. Some 4mm silicone tubing I had also fit without leaks.Since it did what I needed for my one-off job despite the less than honest specs, I'm keeping it. If I needed to use a manometer more frequently, I would have returned this one and bought the pro grade.