- Home Performance Audit
- Insulation For Existing Homes
- Indoor Air Quality
- Air Sealing
- New Construction & Remodeling
Blower Door Draft Testing
If you've ever wondered where your home might be leaking your heated and cooled air, a blower door test is the best way to find out. Wisconsin Home Improvement uses blower door draft testing to find gaps, cracks and holes in your home's building envelope, or the boundary between your conditioned indoor air and the unconditioned air. Sealing and insulating your home's building envelope leads to energy savings for many years to come.
How Does Blower Door Test Equipment Work?
Blower door test equipment consists of a large, powerful fan that is fitted into an exterior door in your home. Its adjustable panels allow our team to fit it tightly within the door frame. When turned on, the powerful fan will blow interior air outside and create negative air pressure within your home.
To ensure the blower door can properly lower your home's air pressure, it's important to do a little preparation before the appointment, according to Energy.gov:
- Close all exterior windows and doors tightly.
- Open all interior room and closet doors.
- If your fireplace, woodstove or pellet stove has been used recently, make sure the fire is completely out, including coals. Remove any ashes and close flues.
- The auditor will disable any combustion appliances like furnaces, water heaters or gas stoves for safety and reactivate them after the test is completed.
When the Blower Door Fan is Activated
The blower door fan will blow air from the interior of the house outside, lowering the air pressure inside the building envelope. When the pressure gauge that measures inside and outside pressure reaches the desired readings, the auditor will begin inspecting the interior. Using infrared thermal imaging equipment, the tester will review each room of the home, noting areas where temperature differences indicate that outside air is infiltrating (or leaking into) the building envelope. Using a camera, the auditor will identify areas that need to be sealed and insulated.
Reviewing Test Results
Our home performance audit generally takes about 90 minutes, and we always encourage homeowners to accompany our auditors as they take readings throughout the home. Inevitably, questions arise -- we are happy to answer any and all during the inspection! The auditor will point out specific areas that need attention, including any needed air sealing or added insulation. Making sure your home is properly sealed and insulated will ensure home energy savings, improved efficiency and added year-round comfort.
Ready to see how your home airtightness measures up? Contact WHI today to schedule a blower door test, and be sure to check out our current specials to see how you can save! You'll be amazed at the energy savings and added comfort a well-sealed home can offer.