Service · Code Compliance
DET & BET Code Testing
Blower door and duct blaster testing for new construction and major renovations — the Georgia code requirements, handled correctly the first time.
Service · Code Compliance
Blower door and duct blaster testing for new construction and major renovations — the Georgia code requirements, handled correctly the first time.
BET Testing
Building envelope testing (BET) is done through blower door testing. A blower door is mounted in a doorway of the home or addition and blows air out of the house to create negative pressure inside. Outside air is then drawn in through every unsealed crack and opening, and the blower door measures that leakage. The more air it takes to hold the home at the target pressure, the leakier the building.
Georgia building code requires a blower door test for all new homes as well as renovations where more than 50% of square footage was added. The guidelines put in place 2021 dictate that the building envelope be extremely tight and not to exceed more than 5 air changes per hour at 50 Pascals.
DET Testing
Duct envelope tightness (DET) testing uses a duct blaster to measure leakage in the duct system. The duct blaster, which is similar to the blower door mechanism, secures to a return vent, then the supply vents are sealed off. The blower then pressurizes the duct system and measures how much air leaks out.
The code requires a duct blaster test for all new duct work and any renovation that impacts over 50% of the ductwork system. Post-construction testing allows leakage to outside of up to 6 CFM25 per 100 square feet of conditioned floor served by that duct system. If the attic or crawlspace where the ductwork is located is encapsulated in spray foam, this test will not be required.
Pricing increases outside of 20 miles from downtown Atlanta to account for drive time. Call or contact us to schedule your test.