How much does a blower door test cost?
What does it cost? The blower door test costs about $450.00 for a typical house. 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.
How hard is it to pass a blower door test?
It is estimated that 50% of newly constructed homes will fail the blower door or air-tightness test. Most blower door test failures occur because of a lack of understanding of what is necessary to create a continuous air barrier system.
How do you pass a blower door test?
Passing Your Blower Door Test
- Have an airsealing plan BEFORE you start construction.
- Make sure your sub-contractors are on board with the airsealing plan and are willing to seal all their penetrations.
- Make sure all major penetrations are properly sealed.
Is a blower door test worth it?
Anyone thinking of buying a house or building one should consider having a blower door test performed. It will help determine the cost of future energy bills. Properly sealing a house will increase comfort, reduce energy costs, and improve indoor air quality.
How long does a blower door test take?
approximately 1-2 hours
Generally, a blower door test, when combined with a whole home energy audit, should take approximately 1-2 hours. The blower door test itself can run for about a half an hour.
What is a good blower door test score?
ACH50 less than 5.0 – Tight House. ACH50 between 5.0 and 10.0 – Moderate House. ACH50 above 10.0 – Leaky House.
What is a good blower door test?
A good rule of thumb is that your home should have a blower door number less than or equal to its square footage. Here are some things to know: a. If your home is 2000 square feet, a blower door number of 2000 cfm50 is decent (but not especially good).
What does a blower door test measure?
Blower doors consist of a frame and flexible panel that fit in a doorway, a variable-speed fan, a digital pressure gauge to measure the pressure differences inside and outside the home, which are connected to a device for measuring airflow, known as a manometer. Uncalibrated blower doors can only locate leaks in homes.
What is a good air tightness score?
A test result of between 3m3/hr/m2 and 5m3/hr/m2 is generally regarded as best practice for naturally ventilated dwellings while test results less than 3m3/hr/m2 are generally recommended for mechanically ventilated dwellings.
What does a blower door test determine?
A blower door test measures how airtight your home is. Your home’s air tightness plays a major role in the overall energy efficiency of your home! As the fan is running, your energy advisor will collect data from the pressure gauge that is used to calculate the airtightness of your home.
What is the blower door test used for?
A professional energy auditor performs a blower door test during a home energy assessment. Home energy professionals use a blower door as a diagnostic tool to determine how much air is entering or escaping from your home. Professional energy auditors use blower door tests to help determine a home’s airtightness.
