Blower Door Test Massachusetts 508-728-1099

Blower Door Test Massachusetts 508-728-1099
Blower Door Test Massachusetts.

In order to determine the energy efficiency of your home or offices, Blower Door Test Massachusetts performs blower door tests to measure the building’s rate of air leakage. This is important when one wants control building pressure, decrease indoor air pollution and most importantly, increase energy conservation. Oftentimes, this is required by energy efficiency incentive programs like DOE/EPA Energy Star Program.

The Tool – Blower Door
The blower door is the diagnostic tool used to measure the air tightness of a structural building and locate areas where air leaks out. It is consists of a fan with adjustable speeds to measure airflow rate that can mounted on an adjustable panel to allow easy installation on any exterior door opening. The blower door also has an air pressure sensing device to measure the air pressure created by the fan flow.

Measuring Building Air Tightness
Both the pressure and the airflow rate are the factors needed to determine the air tightness of the building. The fewer the leaks or the tighter the building is, the less air needed from the blower door fan to create changes in the building pressures.

The measurements of air tightness are presented in a number of different formats which may include:

Air changes per hour at 50 Pa of pressure difference (ACH50). In order to compare the relative air tightness of buildings, normalizing the measurements for the building is useful. Doing so allows one to compare various sizes of buildings. One of the most common procedures is to subject the building to a 50 Pa pressure difference and then calculating the number of times per hour the total volume of the enclosure is changed.

Air flow needed to generate 50 Pa of pressure difference (CFM50). CFM50 is one of the most basic ways in measuring air tightness.

Square inches of leakage area. Leakage area is the estimated cumulative area of all leaks found in a building. This measurement can be useful in estimating natural infiltration rates. Usually, the blower test door is conducted using building pressures that range from 15 Pa to 60 Pa.

Importance of Building Leakage
Building tight houses without proper ventilation is detrimental for health and safety. Inadequately ventilated houses are the ideal environment for dust mites, molds and other respiratory allergens. And because tighter houses can create large pressure differences from various exhaust devices, these houses are prone to problems involving backdrafting and spillage combustions products like fireplaces, furnaces and water heaters.

However, buildings with air leakage have their own set of problems which may include frozen pipes and ice dams, blistering paints, drafts and houses that would not adequately heat or cool. Before, air sealing efforts are focused on door or window air leaks. But now, people are aware that the most important leaks can be found in framing connections, attached garage, attic and crawlspace. These hard to find leaks are responsible for most air leakage in houses and buildings which can result to durability problems and poor performances. This is why having a blower door test in Massachusetts is essential to reducing energy costs in your home or any commercial building.

Gerry has over 35 years of building and construction experience. This combined with his Level III Thermography Certification makes Gerry one of the most sought after experts in the field.

For more information call 508-728-1099 or visit or watch our videos at for more blower door test and thermal imaging insights.

Leave a Reply

Your email address will not be published. Required fields are marked *