High electrical bills? Rogue air leaking? Schedule Duct Blaster & Blower Door Test
Duct Blaster Testing
Definition
A Duct Blaster Test measures air leakage in HVAC ducts.
Independent Testing
A Duct Blaster Test is required by the NC Building Code for all new and replacement HVAC systems. An independent qualified tester performs the Duct Blaster Test to determine the rate of Air Leakage. The compliance standard is 5%. If air leakage in the system is greater than 5%, then remedial work is needed to reduce energy use and cost.
How it Works
1. The HVAC ductwork is tested by sealing off all HVAC registers except one
2. pressurizing the ductwork system by using a manometer fan and a device to monitor the air flow and pressure.
3. The pressure achieved should be CFM 25 which is ____
4. A Report is issued to certify the rate of leakage.
Zap Killer Watts
Brian Smith, a Certified BPI Analyst tester performs the Test for Zap Killer Watts.
Brian has been performing energy testing, including Duct Blaster Testing for more than fifteen years.
COST depends on the number of HVAC units, size of the house and location in the area.
Cost range is from $200 to $750.00
Call us at (252) 491-2670
bLOWER DOOR Testing
Definition
The Blower Door test for home air leakage is a specially built, calibrated device that is used to identify the overall air leakage of a home and its heating and A/C system. It assesses the building’s energy efficiency, indoor air quality and occupant comfort.
Purpose of Test: Energy efficiency. To determine rate of air leakage through a building.
Indoor Air Quality. To Identify air quality issues arising from uncontrolled air infiltration.
Building performance. To evaluate the effectiveness of insulation and other energy saving
measures.
Independent Testing
The test is performed by an independent, certified energy auditor.
How it Works
1. All doors and windows are secured.
2. A Blower Door fan is installed in one doorway.
3. The house is pressurized with the Blower Door fan.
4. The fan is set to create a difference between indoor and outdoor air pressure and causing air to pass from inside to outside. The pressure difference allows for the measurement of air leakage.
5. A manometer measures airflow and air leakage and indicates the rate of air going through the pressurized house. This is then calculated along with the cubic feet of space in the house. The result is measured in air changes per hour (ACH) at a specific pressure, usually 50 Pascals, an HVAC term.
6. The results provide homeowners and builders a basis for identifying where air leakage is occurring - such as around windows, doors and attic access. Addressing such leaks can lead to reduced energy consumption, lower utility bills and enhanced indoor comfort.
Remedial uses of Blower Door Test
Where there is excessive moisture or humidity, a Blower Door test plays an important role in determining and pinpointing the cause.
The average home has enough air leakage to add up to a 2 foot square hole. That's like leaving a medium sized window open 24 hours a day.
Zap Killer Watts
Brian Smith, a Certified BPI Analyst tester performs the Test for Zap Killer Watts.
Brian has been performing energy testing, including Duct Blaster Testing for more than fifteen years. Contact us at (252) 491-2670