A typical reading should show 1400 cfm, anything over that is above the allocated amount of air leakage for a home. The readings from this home showed almost twice that, which means there are some major air leakage problems.
This is an image of a wall in the home, the blue/purple represents temperature change in the air.
Air is flowing down from the top of the wall, which means there must be a gap in the attic allowing air to come through.
Current level of insulation in the attic. The recommended R-value for the state of Indiana around R49.
The attic walls seem to be insulated, though maybe not in the best condition. Based on our infrared and blower door findings, we need to move stuff around and take a closer look!
Where insulation has fallen, you can see drywall to the house. The insulation needs some sort of backing to protect this wall from being exposed. Without this backing, the insulation R-value drops in half.
Fiberglass Insulation is falling off the walls around the ductwork. The ductwork needs to be properly air sealed and insulated. Remember the infrared image of the return grill?
Found a hole...
Taking a closer, you can see into a closet! Attic air is being exposed to the interior of the home through this hole.
The attic access point, or scuttle, has not been insulated. This allows air to flow into the home.
Here we see some sort of vent, but where does it come from and where does it go? Any guesses? This is a bath fan that hasn't been properly ventilated, allowing moisture from the bathroom to be dumped into the attic.
This short wall is where one room has a taller ceiling than the room next to it. If we were to pull this insulation down, we would see the exposed drywall of the interior wall.
This is the dryer vent. It is leaking moisture which is causing the wall to rot.
Intrigued by potential savings, a homeowner in Zionsville, IN booked an energy audit appointment. Our representative, Steve Lindley, came out to his house and spent about two hours checking for a range of things, including air leaks, water damage and insulation levels. Steve used a blower door test to measure airflow and infrared gun to help physically locate air leakage sites in the home.