Air Intake To The Attic

An outdoor unit which houses the fan condenser and compressor and an indoor unit which holds the evaporator and fan.

Air intake to the attic.

So why put an hvac system up in the attic at all. Attic hvac systems save space. Center nails between rafters 18 in. From the roof s peak.

In this post we cover the intake ventilation. Cut shingles with a utility knife. This value is split evenly between intake and exhaust ventilation. Most updated central air conditioned homes have a new air conditioner split system meaning the ac is broken up into parts.

That path is supposed to be from low in the attic intake vents to the highest possible exit point in the attic exhaust vents. The draw from the intake in the attic will pull hot air from the house up into the attic. See figure 2. Worth noting is that this attic air intake will pressurize the house like a balloon.

Attic ventilation works on the principle that heated air naturally rises primarily utilizing two types of vents. So not only are they creating extra work at the air handler with the attic air a good amount of inadequately conditioned air will be pushed right back outside through the envelope. 12 08 2009 09 57 am 42. That is split into 4 25 square feet or 618 square inches for both intake and.

Drive nails up through the sheathing and shingles to mark roof air vent locations. We can open up intake vents and install proper baffles to ensure air flows into your. Larger than the vent opening. Attic length x attic width 150 total vent space or net free area nfa my attic has an area of 1 288 square feet so my nfa is 8 5 square feet.

Well mainly it s a way to save space. Mark attic roof air vent locations. Many homes in the area appear to have soffit or eave vents but when the vent screens are removed intake holes are blocked or non existant. Make the cutout area 1 2 in.

Gable mount attic fans quickly remove a larger volume of hot and or humid air from your attic compared to static ventilation which helps save money on your heating and cooling costs. Blocked or covered intake vents can dramatically reduce the amount of air flow through your attic. Similar to the static method adequate amounts of intake air into the attic space should be provided. Intake vents located at the lowest part of the roof under the eaves allow cool.

According to the national roofing contractors association nrca a power vent with an airflow rate of 1 0 cubic foot per minute per square foot of attic space measured at the attic floor is generally considered to be equivalent. How many cfm s does the intake draw. If two different types of exhaust vents are combined for example a ridge vent and a gable louver the primary path of air becomes the distance between the two types of exhaust vents.