Manometer, RISEPRO® Digital Air Pressure Meter and Differential Pressure Gauge HVAC Gas Pressure Tester

This little unit works pretty good, easy to use and read and you can set it to different readings. I use it most of the time to check for excessive blow by in diesel engines and it does the job just fine.

Across the board, as I had hoped. The meter comes with a nice enough tote, but seeing as how it doesn't prevent the meter from being turned on unintentionally, I keep it in the box it came in -- it's hardly larger than the meter itself. Also comes with some tubes and an adapter that should fit most regulators, though you may need to improvise or get additional adapters to suit your requirements. Wouldn't expect it to stand up to professional use and wear, but it's an affordable and functional option to calling a plumber if you know what you're doing. And I can't stress that enough: you're probably using this meter to make adjustments to a gas supply so take the time to read manuals and reference the internet for additional know-how *and* why.

Very inexpensive way to measure the duct pressures in an HVAC system. (Be sure to also get a set of probes) This simple and inexpensive manometer enabled me to solve a long standing problem with our furnace. Our furnace had been constantly overheating and cutting out and the service tech didn't really know why. Was it a furnace problem, duct problem, coil problem??? I used this manometer to measure the supply and return pressures and see they were way too high vs the furnace spec. Turns out our house had been previously remodeled and a larger furnace added without expanding the duct work. So the existing ducts were insufficient to move the volume of air put out by the larger furnace and it over heated and would lock itself out as a safety precaution. I added and expanded ducts to bring the pressures down closer to spec and now the furnace works great and the house is much more evenly heated. This manometer provided the key information to know what was going on and what to do about it. Great investment!

Functioned very well with predictable increments. This is a digital instrument and much better than the dial variety that I've had issues with.

Liked that there are only a few buttons on the manometer. Easy to zero out and easy to read pressures. Comes with a fitting for gas valves. The supplied hoses are rather small( in diameter ) so If you have a gas valve that has a screw to loosen and a post around it( that the hose fits over ) to test pressure, you will need to find larger hoses to push over the post in order to check pressure. But otherwise, works easy and fine.

I’m actually giving this 3.75 stars. Although the manometer is nice and seems accurate it came with (2) 8” lines and no test probes. So if you’re looking at buying this you will want to order longer lines and test probes.

I needed this meter to check the pressure output port on a furnace inducer. Worked perfectly. I checked this meter against a mechanical gauge (of unknown accuracy) and it was very close. My only complaint is that the specific model of this instrument is not stated on the device itself, and as the manual indicates there are multiple versions of this model (each with different pressure ranges) I wasn't exactly sure which one I had. However, I discovered that by carefully increasing the pressure until the unit would just indicate out-of-range, I could identify the model.

I just calibrated my tankless propane water heater with this manometer. It seemed to work well and be accurate. So maybe it deserves four stars since it is so cheap. BUT the cheapness shows through in that it took me 10 minutes of struggle to get the 9V battery installed. The battery wires are too short to allow the battery to recess properly in the cavity given the cavity's shape. Either the wires need to be longer, or one needs to cut relief slots for the wires and battery harness in the case itself. Way too much trouble for something that should work out-of-the-box. If I ever use this again I will take it apart and cut out the needed reliefs. Right now both battery and wires are jammed in the cavity the only way they can fit and the door is crammed down on top of them and bulging out. The only reason it stays on is because it has a screw. Very annoying. Again it's cheap and it works, so that's good. But the battery situation is a pretty stupid form factor issue that shouldn't even be an issue - even on the cheapest versions of the tool (which this is not).