Air Conditioning Ducts In Attic

Every time you turn on the heating or air conditioning system air flows in through supply ducts and out through return ducts.

Air conditioning ducts in attic. Why installing ductwork in the attic above an in law suite is necessary ductwork is necessary for an in law suite because without it there s no way for the air that s warmed or cooled by your furnace or air conditioner to reach that space. There are two main ways to solve this problem. When the attic is 20 f that insulation is addressing a delta t of 50 f. Item 1790033 model 1790033.

If your hvac unit is the heart supply ducts are the arteries carrying blood to the heart and return ducts are the veins carrying blood back to the heart. If you ve studied heat transfer at all you may recall that the rate at which heat moves from a warmer to a cooler body depends on the temperature difference which we abbreviate as δt. Lambro rigiflex 4 in x 96 in aluminum semi rigid flexible duct. In it the authors argue that attic ducts kill home efficiency they say that studies show a 20 percent energy use increase for homes with attic ducted units.

The condenser in your air conditioner works hard to get rid of heat and pressurize refrigerant for the return trip through your house. Put it in an attic full of blown insulation and you re forcing. So logically the ducts deserve more not less insulation. The air in your vented attic is hot and humid just like all outdoor air in florida.

When the hot humid attic air contacts the cold duct or the cold duct boot the moisture in the air condenses on the cold surface just like the condensation that happens on a cold can of beer. Leaky seals in unconditioned vented attics can effectively turn an efficient 15 seer unit into a 12 meaning it s much less efficient. An attic can get up to about 130 f in the summer and the conditioned air entering the ducts is about 55 f or so. If you have central heating and or air conditioning in your home the warm or cool air is delivered to each room through a system of connected ducts and vents.

The ducts are the veins of the hvac system circulating air throughout a house.