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Manometers: Essential Home-Energy Testing Equipment

Digital air-pressure measuring devices are the primary tools used by energy raters to test home airtightness, duct leakage, and other important building diagnostics.

By Ross MacPherson Issue 299 - June 2021
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Photo: Jeff Roos.

The digital manometer is the backbone of an energy rater’s tool kit, used dozens of times a day, often in conjunction with blower doors. There are two at the top of the field: The Energy Conservatory (TEC) DG-1000 and Retrotec’s DM32. These manometers can measure air pressure in two places at once and are used for home-­performance testing, duct-tightness testing, and building diagnostics. They’re touch-screen controlled and have built-in Wi-Fi and rechargeable batteries.

The basic functions of the two manometers are similar. Both show pressure and/or flow on the screen, as well as the selected setup and flow ring. Both create a Wi-Fi signal for connection to a phone for remote control of the gauge, which is very useful for testing multifamily buildings and producing app-based reports. Both have automatic fan-speed controls for reaching target pressure and graphics that show the correct tubing setups for common test scenarios.

An ability to update the software and firmware makes these instruments relatively futureproof and a solid long-term investment. While both devices perform as advertised, the Retrotec is superior. Our company recently replaced nine TEC DG-700s, TEC’s previous manometer, with DM32s, because the DM32 starts faster, has better features, and is more-rugged than the DG-1000.

Retrotec DM32 
 Photo: courtesy of Retrotec.

Retrotec DM32 

Recommended recalibration 5 years ($165 plus two-way shipping)

Start-up time 10 seconds

Software update method USB to PC with Retrotec software

Equipment compatibility All Retrotec equipment and TEC blower doors, duct blasters, True Flow, and exhaust fan flow hood

Multipoint blower door Capable with Wi-Fi and companion phone app

Battery life Up to 11 hours

Screen size 3.2 in. vertical

Price $1600

retrotec.com

TEC DG-1000 
Photo: Rodney Diaz.

TEC DG-1000 

Recommended recalibration 2 years ($135 plus one-way shipping)

Start-up time 1 min. 26 seconds (45 seconds to main screen, 41 seconds to gauge ready)

Software update method Wi-Fi connection

Equipment compatibility All TEC equipment (user- friendly digital assistant walks through various setup options on screen)

Multipoint blower door Capable with PC and TEC software

Battery life Up to 15 hours

Screen size 4.3 in. horizontal

Price $1575

store.energyconservatory.com


RELATED LINKS:

  • Using a Blower-Door Test and Interpreting the Results
  • Testing and Sealing Ductwork
  • Makeup Air for Tight Houses

– Ross MacPherson, operations manager for New England Air Barrier in Sagamore Beach, Mass. Jacob Bodah of Home Energy Raters LLC also contributed to this article.

 Originally appeared in Fine Homebuilding #299 titled “Powerful Manometers”

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Previous: 5 Reasons to Own a Blower Door Next: Deep Dive into Blower Door Testing

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