{"product_id":"digital-differential-pressure-manometer-portable-hvac-gauge","title":"Digital Differential Pressure Manometer | Portable HVAC Gauge","description":"\u003ch2\u003eDreamburgh Digital Differential Pressure Manometer – Handheld HVAC Air \u0026amp; Gas Pressure Gauge\u003c\/h2\u003e\n\u003cp\u003eTake precise pressure readings anywhere with the \u003cstrong\u003eDreamburgh Digital Differential Pressure Manometer\u003c\/strong\u003e. This compact, portable U-type meter is engineered for HVAC technicians, plumbers, and DIY enthusiasts who need fast, reliable differential pressure measurements in the field. Featuring 11 selectable pressure units, a bright backlit display, and a suite of smart data functions, this gauge keeps your workflow efficient from job start to finish.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eMade in Mainland China.\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003ch3\u003eKey Features\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003e11 Barometric Pressure Units\u003c\/strong\u003e – Switch between PSI, kPa, Pa, mbar, mmHg, inHg, inH₂O, cmH₂O, ozf\/in², mmH₂O, and bar for maximum versatility.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDifferential Pressure Measurement\u003c\/strong\u003e – Simultaneously measure two pressure sources and display the difference with ±0.3% FS accuracy.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMax \/ Min \/ Average Recording\u003c\/strong\u003e – Automatically logs peak, lowest, and average readings so you can review trends without re-testing.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eData Hold Function\u003c\/strong\u003e – Freeze the current reading on-screen for hands-free recording.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eLarge Backlit LCD Display\u003c\/strong\u003e – Easy-to-read digits in low-light environments such as crawl spaces and mechanical rooms.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eLow Battery Indicator\u003c\/strong\u003e – Never be caught off-guard; the meter alerts you when power is running low.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eAuto Shut-Off (Optional)\u003c\/strong\u003e – Conserves battery life during extended jobs by powering down after inactivity.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eOver-Range Alert\u003c\/strong\u003e – On-screen prompt warns you instantly if input exceeds the meter's safe measuring range.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eBuilt-In Calibration Function\u003c\/strong\u003e – Field-adjustable zero calibration keeps readings accurate over time.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCE Certified\u003c\/strong\u003e – Meets European conformity standards for electrical safety and EMC compliance.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eTechnical Specifications\u003c\/h3\u003e\n\u003ctable style=\"width:100%; border-collapse:collapse;\"\u003e\n  \u003ctr style=\"background:#f2f2f2;\"\u003e\n\u003ctd style=\"padding:6px 10px;\"\u003e\u003cstrong\u003eMaterial\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding:6px 10px;\"\u003eABS Plastic\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd style=\"padding:6px 10px;\"\u003e\u003cstrong\u003eColor\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding:6px 10px;\"\u003eBlack\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr style=\"background:#f2f2f2;\"\u003e\n\u003ctd style=\"padding:6px 10px;\"\u003e\u003cstrong\u003eMeasuring Range\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding:6px 10px;\"\u003e±2 PSI \/ 13.78 kPa\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd style=\"padding:6px 10px;\"\u003e\u003cstrong\u003eAccuracy\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding:6px 10px;\"\u003e±0.3% FS\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr style=\"background:#f2f2f2;\"\u003e\n\u003ctd style=\"padding:6px 10px;\"\u003e\u003cstrong\u003eLinearity \/ Hysteresis\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding:6px 10px;\"\u003e±0.1% FS\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd style=\"padding:6px 10px;\"\u003e\u003cstrong\u003eRepeatability\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding:6px 10px;\"\u003e±0.25% FS\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr style=\"background:#f2f2f2;\"\u003e\n\u003ctd style=\"padding:6px 10px;\"\u003e\u003cstrong\u003ePressure Connection\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding:6px 10px;\"\u003eTwo 1\/8\" (3.18 mm) quick connectors\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd style=\"padding:6px 10px;\"\u003e\u003cstrong\u003eWorking Temperature\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding:6px 10px;\"\u003e0–40 °C (32–104 °F)\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr style=\"background:#f2f2f2;\"\u003e\n\u003ctd style=\"padding:6px 10px;\"\u003e\u003cstrong\u003eStorage Temperature\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding:6px 10px;\"\u003e-10–60 °C (14–140 °F)\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd style=\"padding:6px 10px;\"\u003e\u003cstrong\u003eDimensions\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding:6px 10px;\"\u003e150 × 55 × 40 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr style=\"background:#f2f2f2;\"\u003e\n\u003ctd style=\"padding:6px 10px;\"\u003e\u003cstrong\u003eWeight\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding:6px 10px;\"\u003e208 g\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd style=\"padding:6px 10px;\"\u003e\u003cstrong\u003ePower\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding:6px 10px;\"\u003e9V Battery (not included)\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr style=\"background:#f2f2f2;\"\u003e\n\u003ctd style=\"padding:6px 10px;\"\u003e\u003cstrong\u003eCertification\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding:6px 10px;\"\u003eCE\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\n\u003ch3\u003eWhat's in the Box\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e1 × Digital Differential Pressure Manometer\u003c\/li\u003e\n  \u003cli\u003e2 × Plastic Hoses\u003c\/li\u003e\n  \u003cli\u003e1 × Metal Connector\u003c\/li\u003e\n  \u003cli\u003e1 × English User Manual\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eImportant Notes\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003ePlease allow ±1–3 cm measurement variance due to manual sizing.\u003c\/li\u003e\n  \u003cli\u003eDisplay color may differ slightly from product images due to monitor calibration.\u003c\/li\u003e\n  \u003cli\u003e9V battery is \u003cstrong\u003enot\u003c\/strong\u003e included.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eFor guidance on best practices in HVAC system testing and measurement, visit the U.S. Department of Energy – Home Heating Systems resource, or consult OSHA's HVAC safety guidelines to ensure safe working practices when servicing pressurized systems.\u003c\/p\u003e\n\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003ch4\u003eQ: What pressure units does this digital manometer support?\u003c\/h4\u003e\n\u003cp\u003eA: The Dreamburgh digital manometer supports 11 pressure units including PSI, kPa, Pa, mbar, mmHg, inHg, inH₂O, cmH₂O, ozf\/in², mmH₂O, and bar — making it suitable for a wide range of HVAC, gas, and air pressure measurement applications.\u003c\/p\u003e\n\u003ch4\u003eQ: Can this differential pressure meter be used for HVAC duct static pressure testing?\u003c\/h4\u003e\n\u003cp\u003eA: Yes. With a ±2 PSI (13.78 kPa) differential range and ±0.3% FS accuracy, this handheld manometer is well-suited for measuring duct static pressure, filter pressure drop, fan performance, and other low-pressure HVAC diagnostics.\u003c\/p\u003e\n\u003ch4\u003eQ: Does the manometer come with a battery?\u003c\/h4\u003e\n\u003cp\u003eA: No, the unit requires a standard 9V battery which is not included in the package. The meter does feature a low-battery indicator and an optional auto shut-off to help extend battery life during use.\u003c\/p\u003e\n\u003ch4\u003eQ: How do I calibrate the digital pressure gauge?\u003c\/h4\u003e\n\u003cp\u003eA: The manometer includes a built-in field calibration function. Simply follow the steps outlined in the included English user manual to zero the instrument before use, ensuring accurate differential pressure readings every time.\u003c\/p\u003e\n\u003cscript type=\"application\/ld+json\"\u003e{\"@context\": \"https:\/\/schema.org\", \"@type\": \"FAQPage\", \"mainEntity\": [{\"@type\": \"Question\", \"name\": \"What pressure units does this digital manometer support?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"The Dreamburgh digital manometer supports 11 pressure units including PSI, kPa, Pa, mbar, mmHg, inHg, inH₂O, cmH₂O, ozf\/in², mmH₂O, and bar — making it suitable for a wide range of HVAC, gas, and air pressure measurement applications.\"}}, {\"@type\": \"Question\", \"name\": \"Can this differential pressure meter be used for HVAC duct static pressure testing?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"Yes. 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