Using the same company for insulation and blower door testing? You might want to think twice….
A blower door test is a diagnostic test that measures how much air leaks out of a home. It is a valuable tool for contractors and homeowners alike, as it can help to identify and seal air leaks, which can improve energy efficiency and comfort.
However, there are a few reasons why contractors should avoid using the HVAC company that installed the HVAC system to do the blower door test.
1. Bias
Installation companies are in the business of selling and installing installation systems. They have a vested interest in ensuring that the product is properly sized and installed. As a result, they may be biased when performing a blower door test. For example, they may be less likely to find or report air leaks that would require them to make changes to admit to mistakes.
2. Conflict of interest
If the installation company finds air leaks during the blower door test, they may be tempted to recommend repairs that are not necessary or that are overpriced. This is because they would stand to profit from these repairs.
3. Lack of expertise
Not all installation companies have the experience or expertise to perform blower door tests correctly. Inaccurate test results can lead to problems such as improper sizing of the HVAC system and poor energy efficiency.
4. Liability
If the HVAC company makes a mistake during the blower door test, they may be held liable for any damages that result. For example, if they accidentally damage the HVAC system or create new air leaks, they may be responsible for the cost of repairs.
5. Cost
Installation companies typically charge more for blower door tests than independent companies.
For all of these reasons, contractors should avoid using the same company that provides homes insulation to test their own work.. Instead, they should hire an independent company that specializes in blower door testing.
Here are some tips for finding a reputable blower door testing company:
Ask for recommendations from other contractors or homeowners.
Look for a company that is certified by a professional organization such as the Building Performance Institute (BPI) or the Residential Energy Services Network (RESNET).
Get multiple quotes from different companies.
Make sure that the company has the necessary equipment and experience to perform the test correctly.
By following these tips, contractors can ensure that they get an accurate and unbiased blower door test.
