The blower door Air leakage fan can measure the building airtightness from an energy efficient house or an old draughty building. This scalable system or multi-fan system can also measure even the largest building by using more than one blower door unit in parallel.
A typical blower air leakage fan or blower air leakage system is comprised of four main parts:
- A Door Panel, which temporarily seals a typical doorway and provides a hole to mount a fan.
- A calibrated fan, capable of creating a measurable flow of air.
- A two-channel differential pressure gauge that can also calculate flow for a particular fan.
- A fan speed controller to change the air flow through the fan (which can be provided by the gauge)
Features:
- The blower door fan can accurately measure airflow over a wide range of flow rates by using a series of calibrated flow rings (11 CFM to 6,100CFM). Each flow ring can measure a specific range of airflow.
- Light weight, durable door frame and panel for easy use, one-person operation
- Variable fan speed control (solid state – cruise control compatible)
- Automatic control of the blower door fan to maintain a constant pressure (25PA, 50PA or 75 PA)
- The stability of control reduces the fan’s response to wind and holds the test pressure more constant, making tests faster and more accurate.
Who uses it?
- Energy Auditor
- HVAC Contractors
- Building Contractors & Remodelers
- Home Inspector
- Weatherization Analyst
Applications
- Identify leakage
- Identify drafts
- Improving energy efficiency
