Ding Energy Conservation Code: Printed Name of Certified Person Performing Test Date Signature License/Certification Number This form must be on file with the Building Department before requesting C/O inspection. 06/30/2017.
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How to fill out the Blower Door Test Results Form online
The Blower Door Test Results Form is essential for documenting air leakage testing in compliance with energy code requirements. This guide provides step-by-step instructions to assist users in accurately completing the form online.
Follow the steps to successfully complete the Blower Door Test Results Form online.
- Press the ‘Get Form’ button to obtain the Blower Door Test Results Form and open it in your preferred online editor.
- Enter the date in the designated field to ensure the test results are properly logged.
- Provide the permit number related to the construction project where testing is being conducted.
- Complete the job address section, including the street address, city, and zip code for precise location identification.
- In the blower door testing section, indicate whether the building has been tested for air leakage by marking 'Yes' or 'No'.
- Record the pressure measurement at 50 Pascals in the appropriate field.
- If ventilation is required, answer 'Yes' and specify the type of ventilation; otherwise, mark 'No'.
- Document the air leakage rate and any additional required information regarding the testing and ventilation.
- A certified person must print their name, sign, and date the form, along with providing their license or certification number.
- After completing all fields, save your changes and use the options to download, print, or share the form as necessary.
Complete your Blower Door Test Results Form online today!
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What are ACH50 results?
A building's ACH50 number indicates how tightly a building was originally constructed (or later air-sealed) and is an excellent gauge for comparing leakiness between buildings. The lower the ACH50 values, the tighter the building.
What is the blower door test measurement?
The Blower Door measurement is a pressure difference measurement in which the influence of the wind at wind force 5 on a building is simulated. This corresponds approximately to the conditions on a stormy autumn day. The air exchange rate is determined and leaks in the building envelope are documented.
How do you read a blower door results?
Every 10 points on the blower door is about 1 square inch of air leak. So a 1400 cfm50 blower door number is about 1 square foot of air leakage across the whole home. That's not that much to chase, so every little bit counts. (1400/10 = 140 square inches/144 square inches/square foot = 1 square foot)
How do you calculate CFM for a blower door test?
To calculate the ACH50 from the CFM50 given by the blower door we need to know the volume of the building. Multiply the flow by 60 to convert to hours, then divide by the volume. (ACH50 = airflow (CFM50) X 60 / conditioned volume) If the number is under 7 then it is a pass.
How to calculate blower door test results?
The formula is the rate of airflow in cfm x 60 minutes in an hour / volume of the home = number of air changes per hour. As an example, a home had a blower door test of 750 cfm and a calculated volume of 12,000 cubic feet. Using the formula, 750 cfm x 60 minutes / 12,000 cu.
What is a good score on a blower door test?
The average blower door test result depends largely upon the age of the home, the insulation levels, and the age of the windows and doors. Generally, a new home should test less than 3.5 ACH50, as the insulation levels and efficiency of the windows/doors would make for a fairly airtight home.
How do you calculate CFM50?
To determine the percent reduction in CFM50, subtract the after-tightening test result from the before-tightening test result. Divide this difference by the before-tightening result and multiply by 100.
What are good blower door test results?
The average blower door test result depends largely upon the age of the home, the insulation levels, and the age of the windows and doors. Generally, a new home should test less than 3.5 ACH50, as the insulation levels and efficiency of the windows/doors would make for a fairly airtight home.
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