---
product_id: 164793784
title: "EHDIS Manometer, Professional Air Pressure Meter, Dual-Port HVAC Digital Manometers Gas Pressure Tester Differential Gauge"
brand: "ehdis"
price: "€ 91.45"
currency: EUR
in_stock: true
reviews_count: 13
category: "Ehdis"
url: https://www.desertcart.hr/products/164793784-ehdis-manometer-professional-air-pressure-meter-dual-port-hvac-digital
store_origin: HR
region: Croatia
---

# Dual-port differential measure 0.5 sec fast response ±0.3% accuracy EHDIS Manometer, Professional Air Pressure Meter, Dual-Port HVAC Digital Manometers Gas Pressure Tester Differential Gauge

**Brand:** ehdis
**Price:** € 91.45
**Availability:** ✅ In Stock

## Summary

> 📊 Elevate your pressure game — precision meets speed in one sleek tool!

## Quick Answers

- **What is this?** EHDIS Manometer, Professional Air Pressure Meter, Dual-Port HVAC Digital Manometers Gas Pressure Tester Differential Gauge by ehdis
- **How much does it cost?** € 91.45 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.hr](https://www.desertcart.hr/products/164793784-ehdis-manometer-professional-air-pressure-meter-dual-port-hvac-digital)

## Best For

- ehdis enthusiasts

## Why This Product

- Trusted ehdis brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Instant Insights:** Experience rapid 0.5-second response time for real-time troubleshooting and faster decision-making on the job.
- • **Smart Data Handling:** Max/min record, data hold, and save functions empower you to capture critical readings and track system performance over time.
- • **Precision You Can Trust:** Achieve ultra-accurate pressure readings with ±0.3% full scale output accuracy, ensuring your HVAC or gas system diagnostics are flawless.
- • **Versatile Unit Selection:** Switch effortlessly between 12 pressure units including psi, kPa, bar, and inH2O to match any professional standard or project requirement.
- • **Dual-Port Differential Mastery:** Simultaneously measure single or differential pressures with dual input ports, perfect for complex HVAC and gas system analysis.

## Overview

The EHDIS Manometer is a compact, professional-grade digital air pressure meter designed for HVAC and gas system diagnostics. Featuring ultra-low-power sensing with a 32-bit MCU and 24-bit ADC, it delivers fast (0.5 sec) and highly accurate (±0.3% FSO) measurements. Dual input ports enable differential pressure testing, while 12 selectable units and smart data functions make it versatile and user-friendly. Ideal for technicians and DIY pros alike, it offers reliable performance at an unbeatable value.

## Description

EHDIS Manometer, Professional Air Pressure Meter, Dual-Port HVAC Digital Manometers Gas Pressure Tester Differential Gauge: desertcart.com: Industrial & Scientific

Review: Affordable and Reliable Micromanometer I use for Radon Mitigation Troubleshooting - This micromanometer was an excellent investment for diagnosing issues with my radon mitigation system. Despite its budget-friendly price, it delivers accurate and consistent pressure readings, making it easy to assess system performance and pinpoint any problems. The device is compact, lightweight, and user-friendly, with a clear display and intuitive controls. It responded quickly to changes in pressure, helping me identify airflow issues and ensure that the system was operating efficiently. The build quality is solid for the price, and it feels durable enough for regular use. One of the best aspects is its affordability—professional-grade micromanometers can be quite expensive, but this one provided the precision I needed without breaking the bank. Whether you're a homeowner troubleshooting your radon mitigation system or a technician looking for a reliable tool, this micromanometer is a great choice. Highly recommended for its accuracy, ease of use, and value!
Review: Worked well, solved the problem, saved $$$ - I bought this because I have a 10+ year old wall-mounted natural gas heater (Empire DV-35 SG) that has very low heat output. On full heat it is supposed to have a flame this is ~ 3” tall, but all I could see was maybe 1/4” tall flame. It would cost well over $1500 to replace this unit, or probably at least $500 to have it fixed. To analyze the problem one needs to measure the natural gas pressure on the supply side of the valve, and on the downstream side (for good vid search “diagnostic testing for gas pressure and gas millivolt valves“) The heater uses a Dexen 6003 millivolt valve; this valve has small pressure taps built in to the body of the unit. The diagnostic process involves turning off the gas supply, opening the supply side pressure tap, hooking up a pressure meter to the tap, then turning the gas back on to measure pressure. Then repeating this exercise on the downstream side of the valve. Published data say the upstream side pressure should be in the range of 5 to 8 inches of water and the downstream side should be ~ 3” of water. I had the option of trying to purchase a “magnahelic” guage (high quality, but expensive), try to set up a classic U-shapped glass tube with water, or purchase an inexpensive digital pressure gage. Despite a couple of mediocre reviews for this digitial manometer I thought the purchase price ($49) was worth the risk. I am not able to calibrate this manometer, so I have to trust the readings out of the box. It gave me 5.77 inches of water on the supply side (OK reading) and 4.2” of water on the downstream side: significantly too high. I interpreted this to mean that the output tube was partially blocked and causing back-pressure, which would be consistent with the very low flame and low heat output that I saw. Upon disassembly of the output tube and orifice I found a spider had built a nest inside and almost (but not quite) totally blocked the flow of gas. I removed the tube/orifice, washed it out, and now my heater is back to working perfectly. In my opinion, spending $49 for this tool, to save a minimum of $500 and possibly more than double that, was exceedingly worthwhile. Perhaps if I were a professional HVAC person who needed a rugged, calibrated, reliable tool, this model would be too simple and maybe not robust enough. But for the homeowner / DIY person this is an excellent solution and a terrific deal. A key point to add: this unit has small diameter tubes, 3/16”, to connect to the device you want to measure. The output taps on the Dexen valve are larger, ~ 1/4” or 5/15”. I needed to separately purchase an adapter that connects the larger diameter tube to the small dia tube that comes with the manometer. Part # RMA316 at Supply House.

## Features

- This digital handheld manometers can measure the air pressure of the single pipe， or differential pressure of two pipes.it is suitable for measuring of ventilation and air condition systems,and widely use forgas measurement,calibration,and any trouble shooting of any gas pressure systems.
- Ultra-low-power sensing & measurement with 32-bit MCU and 24-bit ADC make the measurement of air press faster and more accurately.Perfect for working on tankless heaters,Very handy to set gas pressures on electric valves,Using for service testing of gas pressure on domestic boilers, Measures Air Flow about your bathroom fan ect.
- Selectable pressure range: ±2.999psi; Accuracy: ±0.3%FSO (at 25°C) ; Repeatability: ±0.2% (Max ±0.5%FSO); Linearity/Hysteresis: ±0.29%FSO.
- 12 Selectable Units of Measure (kPa, Psi, Kgfcm2, Ozin2, Bar, mbar, inHg, mmHg, InH2O, FtH2O, cmH2O, Pa) with function: Data Hold and Error Code - Response Time: 0.5 Sec.
- Ehdis digital manometer has Dual Input that can test / measure the differential gas pressure with its provided twin input probes.Max / minimum record function; Data save function, also has room temperature future.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B07L641Q7L |
| Best Sellers Rank | #8,639 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #2 in Manometers |
| Date First Available | December 6, 2018 |
| Is Discontinued By Manufacturer | No |
| Item Weight | 0.704 ounces |
| Manufacturer | Ehdis |
| Product Dimensions | 5.31 x 1.18 x 2.17 inches |

## Product Details

- **Brand:** EHDIS
- **Item dimensions L x W x H:** 5.31 x 1.18 x 2.17 inches
- **Manufacturer:** Ehdis
- **Material:** Rubber
- **UPC:** 738920594353 738920594377

## Images

![EHDIS Manometer, Professional Air Pressure Meter, Dual-Port HVAC Digital Manometers Gas Pressure Tester Differential Gauge - Image 1](https://m.media-amazon.com/images/I/71b2TKcuJnL.jpg)

## Questions & Answers

**Q: Can you use this to check water column on propane regulators ,.....10 to 12 inches of water column?**
A: Yes, look at 12 selectable units and you see  InH2O, FtH2O, cmH2O.  InH20 is probably what you will use.  Most natural gas and LP gas work between 2 inches and 10 inches water column(InH20)

**Q: can it be "0" before use?**
A: Yes I have zeroed mine before use

**Q: What ID silicone tubing, fits the connectors on the top of the device?  What size are the two supplied tubes?**
A: I connected the small tubing to the 1/4" NP adapter and slipped 3/8" clear tubing over the threaded portion. The other end of the 3/8" tubing will fit nicely over the nipple on the Noritz.

**Q: need to replace a component in our water heater. Manufacturer asked us to obtain a digital manometer with a 7/16" hose.  Will this work?**
A: I used 3'8" tubing. My Monometer came with a small 3/16" tubing and a 3/16" tubing to 1/4" NP fitting. 3/8" tubing fits the threaded portion of the 1/4" fitting.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Affordable and Reliable Micromanometer I use for Radon Mitigation Troubleshooting
*by A***. on April 2, 2025*

This micromanometer was an excellent investment for diagnosing issues with my radon mitigation system. Despite its budget-friendly price, it delivers accurate and consistent pressure readings, making it easy to assess system performance and pinpoint any problems. The device is compact, lightweight, and user-friendly, with a clear display and intuitive controls. It responded quickly to changes in pressure, helping me identify airflow issues and ensure that the system was operating efficiently. The build quality is solid for the price, and it feels durable enough for regular use. One of the best aspects is its affordability—professional-grade micromanometers can be quite expensive, but this one provided the precision I needed without breaking the bank. Whether you're a homeowner troubleshooting your radon mitigation system or a technician looking for a reliable tool, this micromanometer is a great choice. Highly recommended for its accuracy, ease of use, and value!

### ⭐⭐⭐⭐⭐ Worked well, solved the problem, saved $$$
*by J***C on April 2, 2022*

I bought this because I have a 10+ year old wall-mounted natural gas heater (Empire DV-35 SG) that has very low heat output. On full heat it is supposed to have a flame this is ~ 3” tall, but all I could see was maybe 1/4” tall flame. It would cost well over $1500 to replace this unit, or probably at least $500 to have it fixed. To analyze the problem one needs to measure the natural gas pressure on the supply side of the valve, and on the downstream side (for good vid search “diagnostic testing for gas pressure and gas millivolt valves“) The heater uses a Dexen 6003 millivolt valve; this valve has small pressure taps built in to the body of the unit. The diagnostic process involves turning off the gas supply, opening the supply side pressure tap, hooking up a pressure meter to the tap, then turning the gas back on to measure pressure. Then repeating this exercise on the downstream side of the valve. Published data say the upstream side pressure should be in the range of 5 to 8 inches of water and the downstream side should be ~ 3” of water. I had the option of trying to purchase a “magnahelic” guage (high quality, but expensive), try to set up a classic U-shapped glass tube with water, or purchase an inexpensive digital pressure gage. Despite a couple of mediocre reviews for this digitial manometer I thought the purchase price ($49) was worth the risk. I am not able to calibrate this manometer, so I have to trust the readings out of the box. It gave me 5.77 inches of water on the supply side (OK reading) and 4.2” of water on the downstream side: significantly too high. I interpreted this to mean that the output tube was partially blocked and causing back-pressure, which would be consistent with the very low flame and low heat output that I saw. Upon disassembly of the output tube and orifice I found a spider had built a nest inside and almost (but not quite) totally blocked the flow of gas. I removed the tube/orifice, washed it out, and now my heater is back to working perfectly. In my opinion, spending $49 for this tool, to save a minimum of $500 and possibly more than double that, was exceedingly worthwhile. Perhaps if I were a professional HVAC person who needed a rugged, calibrated, reliable tool, this model would be too simple and maybe not robust enough. But for the homeowner / DIY person this is an excellent solution and a terrific deal. A key point to add: this unit has small diameter tubes, 3/16”, to connect to the device you want to measure. The output taps on the Dexen valve are larger, ~ 1/4” or 5/15”. I needed to separately purchase an adapter that connects the larger diameter tube to the small dia tube that comes with the manometer. Part # RMA316 at Supply House.

### ⭐⭐⭐⭐ Could use a better user manual.
*by W***. on September 9, 2025*

Seems to work well testing the gas WC to my garage Big Mac heater. The only thing the directions don’t specify if you have to block the negative port while testing with only one port.

## Frequently Bought Together

- EHDIS Manometer, Professional Air Pressure Meter, Dual-Port HVAC Digital Manometers Gas Pressure Tester Differential Gauge
- ZIBOO ASP2 Static Pressure Probes (Two-Pack)
- ZIBOO RMA316 Manometer Tube Adapter, 3/16" to 5/16 Compatible with Fieldpiece JL3KM2 ，SDMN5，SDMN6，ADMN2 Compatible with Klein Tools ET180

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*Product available on Desertcart Croatia*
*Store origin: HR*
*Last updated: 2026-03-12*