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Heating,
Ventilation and Air Conditioning (HVAC) Cont.:
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a tightly sealed and well insulated home, the ventilation system is
critical. Jon Guy and his team from Adonai used building science techniques to monitor the amount of air required for healthy living. They regulate where the fresh air comes into the house through a controlled intake, therefore the quality of air is much healthier than in many homes where "fresh" air seeping into the house could be coming from a moldy basement or from a garage with carbon monoxide fumes or chemicals. |
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Every
room of the house (except bathrooms) has at least one HVAC supply
and a return. This ensures quiet, comfortable rooms with even heating/cooling
and thus avoids drafts and hot/cold spots. For example, this 150 SF office has two supply lines and a return. |
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The Duct Blaster
and Blower Door Tests simulates the air loss in the home as if a
20 mph wind were blowing on the house. First all doors and windows
are tightly closed. All vents are sealed off completely with tape,
except this one where the Duct Blaster test will be conducted.
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The
Blower Door Test Unit is installed on one exterior door. The fan on
the Blower Door unit sucks air out of the house, depressurizing it.
Pressure always tries to equalize itself so air from the outside will
rush in through any available cracks in the house shell - ceiling,
around doors, windows, foundation, floor, plumbing pipes, receptacle
holes, etc. The fan on the Blower Door Unit actually measures how much air is coming back into the house and the results reflect the amount of air loss and therefore the size of the holes in the walls. Our Duct Blaster Test shows performance of 5% or less of total loss in the home. |
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Building partners:
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