Blower Door Cost

The fan pulls air out of the house lowering the air pressure inside.

Blower door cost.

A blower door test is used on buildings in order to quantify the amount of air leakage through its enclosure. A blower door is a powerful fan that mounts into the frame of an exterior door. The higher outside air pressure then flows in through all unsealed cracks and openings. Once the energy auditor arrives it takes between 10 and 20 minutes to install the blower door inside an existing door frame an additional 10 to 15 minutes to prep the house for the test and.

The 50 is based on actual bids. The blower door test costs about 450 00 for a typical house. A blower door test costs about 50 that s the incremental cost of adding a blower door test to a site visit from a contractor that was going to be there anyway the cost is lower for weatherization agencies using in house crews. A blower door fan simulates these conditions during a test.

This includes a report of the air leakage locations and recommendations for the sealing approach. The report lists the sealing measures in a cost efficient priority. This would be true if a blower door test cost anywhere near that. A blower door is a machine used to measure the airtightness of buildings.

The blower door test. This section covers all the aspects of figuring out blower door flow estimating 50pa flow comparing your home tightness to others and estimating natural infiltration rates heat loss and fuel costs. 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. Pricing can be obtained separately for caulking and sealing the air leakage.

The blower door test simulates wind blowing against a building at 20 miles per hour in which case the total volume of air within the house would be exchanged with outside air 7 times. Estimating blower door flow for each blower speed. Estimating flow rate at 50 pa when you can get to 50 pa when you can t get to 50 pa. The 20mph wind is equivalent to 50 pascals pa of pressure difference.

1 a calibrated variable speed fan capable of inducing a range of airflows sufficient to. As with any purchase prices vary by manufacturer and whether the product is new vs. Blower door tests are becoming part of many state and provincial mandatory building codes the new bc energy step code in british columbia canada is one example. During this test a calibrated fan is installed in an otherwise sealed door or window while all the other openings to the exterior are closed.

What is a blower door test. Blower door equipment costs. Minneapolis blower door model 3 with dg 1000 digital gauge.