Manometer, Professional Air Pressure Meter Dual-Port HVAC Digital Manometer

This manometer worked great for diagnosing my heater. I was able to get the pressure reading I needed and confirm that everything was operating properly after making the repair. The readings were easy to see and the unit was straightforward to use. For the price, I think this is a great tool to have if you work on HVAC equipment or need to troubleshoot air or gas pressure. Very happy with it and would definitely recommend it.

Works great, comes in very handy. Excellent tool to have available. With the money

Bought this dual-port digital manometer for my husband as a gift since he’s new HVAC work. He says it’s professional, reliable, and very user-friendly. The differential pressure testing works great, and he prefers it over bulkier HVAC gauges. The included battery was convenient. Highly recommend!

I have used this for some time now. It seems ok if you're in a pinch, but I have no way of knowing how accurate it is. I suspect it's not quite as accurate as the more expensive ones, and that can matter depending on your use case.

Use for EVAP diagnosis on cars, have used to check airflow from HVAC vents. detect pressure in cooling systems when looking for combustion leaks. Reads low values accurately. To cheap not to own one. If your a tech, you will find uses for it.

Works well and is pretty straightforward to use. The display is clear and easy to read, and I like that it has multiple measurement units to choose from. It feels sturdy and comes with everything needed to get started. Very useful for checking pressure and a good tool to have around

Great product, works as need it to and advertised

I bought this to diagnose an air pressure switch problem in a heating system. A pressure switch that's supposed to close when experiencing a 1.5" WC (Water Column) amount of negative pressure wasn't closing, so I bought this to determine if the switch was bad, or if I have a problem/leak in the combustion chamber (heat exchanger). If you're unaware, pressure as measured in "inches WC" is WAY more sensitive than PSI. I think the conversion is something like 1 PSI is equal to like 27.7 inches water column. And I needed something to detect 1.5 inches water column, which is 0.054 PSI. Many of the analog gauges just aren't good at picking up really low pressures like that. But, one of the modes of this meter is to measure in inches WC, so I decided to try it. The one thing I noticed is, just sitting there, not connected to anything the gauge reads negative 0.27 inches WC, so it's claiming there's a slight vacuum in regular air, which seems unlikely. So, when I connected it to the heating system, it read 1.57 inches WC, so I wasn't sure if that was really 1.57, or if I needed to manually subtract out the 0.27 reading. I wish there was a way to zero the meter out, meaning, I'm at regular atmospheric pressure for my temperature, let's call that zero, so that when I measure the appliance (heater), I can see the delta from normal, but with the extremely short users manual that comes with this, I don't see a way to do it. In the end, the meter showed I had negative pressure in the combustion chamber, which is what's supposed to happen (to prevent carbon monoxide build up), so I guess it worked, I just don't know how accurate it was. But good enough for the weekend HVAC repairer like me.

Accurate satisfactorily! Good enough for fluid mechanics lab equipments. Only for gases. And connected appropriately, the pressure is safely carried by the air in the connecting pipes to this gauge ! Can rely on Pascal to read liquid pressures

Bastante útil para medir perfiles de velocidad en función de la presión estática y absoluta, aunque el juego de conexiones que compré solo tiene el detalle de que los tubos pitot L no están perforados de la boquilla

Good product.