The Minneapolis Blower Door has long been recognized as the best designed and supported building airtightness testing system in the world. Combined with specialized accessories and testing procedures developed by The Energy Conservatory, the Minneapolis Blower Door is the system of choice for utility DSM programs, energy raters, HVAC contractors and weatherization professionals.  Complete with everything you need for fully automated Blower Door testing. Built-in Cruise Control allows you to automatically control the Blower Door fan to maintain a constant 75 Pa, 50 Pa, 25 Pa or 0 Pa building pressure without having the gauge connected to a computer. Our lightweight, rugged, injection molded fan housing has a 5 year “no questions asked” warranty. Precise, stable flow measurements without the need for gauge dampening. The Model 3 Fan provides quick and accurate flow measurements from 300 to 6,300 CFM (includes Flow Rings A and B). Optional Flow Rings C, D and E will measure down to 11 CFM. Variable fan speed control (solid state – cruise control compatible). Both 110V/60 Hz and 220V/50 Hz models. This Model 3 Minneapolis Blower Door system includes a single fan, the DG-1000 pressure and flow gauge with Cruise Control, and the adjustable aluminum frame and nylon panel. Multi-fan Minneapolis Blower Door systems are also available (both 2 fan and 3 fan systems). Mini-fan Minneapolis Blower Door Systems that use the Duct Blaster® Fan are also available.

Lightweight, Durable Door Frame and Panel
The innovative design of our adjustable aluminum frame and durable nylon panel is the result of years of refinements based on the experience of thousands of users. There is no easier way to seal a Blower Door fan into a door opening.  Snap-together aluminum frame comes in a compact carrying case and sets up in seconds. Precision engineered cam lever mechanism securely clamps the nylon panel into the door opening. Adjusts to fit the largest and smallest residential door openings (custom sizes available). A built-in window allows you to monitor outside activity. Panels are also available with a hole sized for the Duct Blaster Fan as well as two and three Blower Door fan configurations.

Blower Door Accessory Case
Our padded accessory case comes with every Blower Door system and has loads of room for your gauges, manuals, tubing, speed controller and nylon panel. It even has a padded laptop computer pocket and file compartments for organizing literature, forms and other documents.