Description:
A blower door is a machine used to measure the airtightness of buildings. It can also be used to measure airflow between building zones, to test ductwork airtightness and to help physically locate air leakage sites in the building envelope.
There are three primary components to a blower door: (1) a calibrated, variable-speed fan, capable of inducing a range of airflows sufficient to pressurize and depressurize a variety of building sizes, (2) a pressure measurement instrument, called a manometer, to simultaneously measure the pressure differential induced across the face of the fan and across the building envelope, as a result of fan airflow, and (3) a mounting system, used to mount the fan in a building opening, such as a door or a window.
- Accessories: DM32 Digital Manometer; DM-2 Digital Gauge
- Measurement: Air tightness
- Digital Gauge Model: DM32
- Dimensions: 5.8" × 3.6" × 1.4" (14.7 × 9.2 × 3.5 cm)
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Fan |
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Flow Into: |
CFM |
litres/sec |
m3/h |
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Maximum Flow (60Hz): reduce values by 15% for 50Hz power (per fan) |
Free Air |
6,700 |
3,162 |
11,383 |
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50 Pa |
6,100 |
2,879 |
10,364 |
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75 Pa |
5,800 |
2,737 |
9,854 |
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Minimum Flow: |
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5 |
2 |
8 |
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Dimensions: |
22" (55.9 cm) inlet diameter, 9.75" (24.8 cm) long, 25" (63.5 cm) height |
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Weight: |
32.8 lb (14.9 kg) or 34 lb (15.4 kg) with A & B Range Rings installed |
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Flow Accuracy: |
+/-5% |
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Manual: DM32 Manual, DM-2 Manual, Quickguide_Blowerdoor