Ducting To Attic Helps

This article describes routing bath exhaust fan duct upwards through an attic or roof space or downwards through a floor or crawl space.

Ducting to attic helps.

Up against the deck may be the worst place in the attic to. According to nrel researchers david roberts and jon winkler moving the ducts from a vented attic to a new location inside the conditioned space will reduce electricity used for cooling by 15 to 20 and will reduce the size of the needed air conditioning equipment by 0 5 to 1 ton. Lowering the temperature of an attic that contains ducts can reduce your air conditioning costs. If the home doesn t have ducts there still may be reasons a homeowner would want to reduce the attic temperature.

Broken or cracked ducts in oyur attic coulld cause mold growth by checking your ducting frequently you could preven the start of mold growth. When your system itself is in the attic however you don t have to worry about this because your ducts won t have to run all across the attic. Today s flexible ductwork is covered with a shiny metallic cover this is its vapor barrier. Well in the comments dave roberts a senior engineer at the national renewable energy lab nrel wrote about a paper he co authored last year and included a link to it.

Bathroom ventilation fan duct routing routing a bath vent duct down out or up through an attic or roof out. If they are located in your attic be sure the area is properly insulated and any cracks or holes are sealed. Keep ducts spaced apart so air can flow between them. Hvac ductwork is typically visible in your attic especially flexible ductwork.

If ducts are located in a crawlspace underneath your house cover the soil to reduce moisture. Remember that article i wrote about ducts installed against the roof deck and how i said it was probably the absolute worst single location for installing ducts. There will be a lower cost for parts. Moreover it s always a good idea to seal leaks at ductwork seams to seal leaks in your home s ceiling the attic floor and to improve the r value of your attic insulation and duct insulation the cooling effects of an attic ventilation fan are in most cases negative dorsett says.

In all cases the ducting needs to conduct the exchaust to the building exterior and needs to terminate in an animal proof vent cover. The shiny vapor barrier will protect the ductwork from sweating as long as it s exposed to the surrounding air.