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Blower Door Test

Janet MacIlvaine and George James from the Department of Energy show Bob how they conduct a blower door test on the Habitat for Humanity Blitz Build project in Yonkers, New York. The blower door is used to measure the amount of air leakage in the building. Today's tighter homes need controlled ventilation, which is provided here by a Tamarack Preventilator exhaust fan. The fan has special controls that continuously maintain a slow ventilation rate and allow the occupants to boost the ventilation in the bathroom when needed. The test shows that the house is both well-sealed and well-ventilated.
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Blower Door Test

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Blower Door Test

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" Joining us now Janet Mack of Eddie George James from the Department of Energy and you're here to help us figure out whether this house is really going to perform well that. That's right this missiles or other proof of putting you -- we need these kind of test to see your house reforms alone you know the technology. Aspect is that what department -- yet so we're doing here in the blower door that are we have other tests. Devices that you know will leave them can tell how a border are working out detestable."

" Well the first -- that we're gonna do is to see whether or not the house is. Leaky so we'll be looking at. When you don't mean -- the ring -- I don't -- whether they're saying that I mean I they're small holes in walls and ceiling the floor. Where air comes and that we don't want it to come and so if that's trade and will be -- to fix them for relief. That's a diagnostic tests but it's also lobbed test Disney we need to know whether NAFTA -- getting adequate ventilation."

" That's one of the big concerns with. Super insulated houses absolutely sips panel system outweigh that very tight very warm but the big concern is how's that reading -- circulate it."

" And I hear about a lot from consumers are very concerned about how tight house in getting. And even -- sales were tightening to tight but the real key is to bring that area and in control the way -- wanted to come and -- fresh air. Not as and it's passing over insulation. Right. All types can."

" How we accomplish that -- well we have a controlled ventilation system here air comes in through the basement to the -- gas heaters down there. And excess Erica can also suggests he is right right brings area of the house. Upstairs we have with a column penetrator some of them by camera act industries its candidates square right among -- out. That's right and that was an exhaust system president's offices in business and senate intelligence offices and an army runs at very low pressure to keep the -- but if they're taking that shower upstairs someone -- or negative but there you know increasingly. And -- straight through a period of time Janet how does test work."

" Well -- device called a blower door to install an exterior door way. And that has a large band that can keep pressure as the house by removing the air in the house basically. Takes measurements and from the -- measurements we can tell. Whether or not -- coming in an inappropriate places like around windows and doors else and is going to start the test. And the fate and turn on. And will take about a 150 measurements and by day now Maginnis statistical sample. -- If scenarios that you might experience typical season. When we finish this test yourself some questions. We want to -- some sensors in place this present sensor that measures relative humidity one of the things that we see and houses where there's not a duct system like this house as a high buildup if humidity -- We expect the ventilation system in this house to control that and thereby stop any kind of mold growth that we would normally see and it really high humid atmosphere. It really different planks and measure it and make sure that it works so Janet what's the net do we test. -- perhaps we and a shot testing and what we see here as a well sealed house with good ventilation that's great."

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