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Installing an ERV in an Unvented Attic - GreenBuildingAdvisor The attic stale air pickup should be near the ridge because usually the highest humidity is there, this is the air you want to move out of your attic This hot humid air that is pulled out will now be supplied with conditioned air from the house thus indirectly conditioning your attic
Are Powered Attic Ventilators Ever a Good Idea? There is no vapor or reflective barrier on the attic ceiling, just wood and nails During the day our house stays relatively cool with all the windows closed But come around 7pm until about 11pm it’s hotter inside than out (all windows open now), and from a thermal camera it looks like the attic is dumping stored heat down into the house
Single Ducted Minisplit in Attic vs Heads in Each Room A question for the community: Is it better to have 4 mini-splits in bedrooms, or a single ducted mini split serving all the bedrooms from an unconditioned attic? The main goal is cooling We’re in California, Zone 3C, in a 1961 house with a ventilated, unconditioned attic The second floor is 1200 sq ft with electric baseboard heaters and no AC
All About Attics - GreenBuildingAdvisor Most six-year-olds can draw a house The typical child’s depiction of a house shows a rectangular building with a door and a few windows, topped by a gable roof This type of house is fairly common in most areas of the U S If the house was built 100 or more years ago, it usually had a cellar or basement underneath the first floor and an attic above the top floor
Fans in the Attic: Do They Help or Do They Hurt? Attic Fan (roof mounted type) and ceiling shutters ? When I was about 16 my father installed an Attic power vent fan We had a small house about 1000sf The house had a removable cover to get into the attic If the entrance cover was left open, and the fan came on You could fell the rush of air being pulled into the attic Present day
A New Look at Conditioned Attics - GreenBuildingAdvisor The problem is attic ductwork The main reason that anyone talks about conditioned attics is that some builders want to install ducts in the attic Installing ducts in an attic is a bad idea, but many builders don’t know that While locating ducts in an attic reduces installation costs for the builder, it increases energy costs for the homeowner
6 Ways to Improve Ducts in an Unconditioned Attic Duct against the roof deck in an unconditioned attic [Photo credit: Energy Vanguard] 2 Keep the ducts low in the attic Attics get very hot On a sunny summer day, the air temperature in an unconditioned attic can get up to 120° F or even a bit higher But what you may not know is that attics aren’t uniformly hot
Should I vent my unvented garage attic? - GreenBuildingAdvisor The house attic is insulated with R-42 open cell foam on the roof deck, and there is currently no insulation in the garage attic The wall between the house attic and the garage attic is drywalled and insulated with R-30 open cell foam on the house side The garage has fire sprinklers, so the garage ceiling will need to be drywalled
Is Venting an Unconditioned Attic Necessary? A reflective metal roof keeps an attic much cooler than passive ventilation Photo courtesy of Cameron Taylor For the second problem, cooling costs, attic ventilation supposedly reduces cooling costs in the house Yes, ventilation can keep the attic cooler, but that doesn’t translate to lower air-conditioning costs
Ducts in an Unconditioned Attic - GreenBuildingAdvisor There are two options for locating ductwork in an attic The first is to move the building’s thermal boundary from the attic floor to the roofline, which places the ductwork inside conditioned space The other is to bury ducts in a layer of insulation on the attic floor, leaving the balance of the attic unconditioned