Steps to sealing attic air ducts.
Air ducts in attic.
If your home does not have an hvac system and you plan to add one you will need to have new ductwork.
The remaining 2 tons of capacity is at least 1 5x oversized for the actual 1 load.
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.
Locate the source of the thermal leaks by inspecting the ductwork while the air conditioner is running.
Use zip ties to secure any loose ducts to the attic floor.
I live in montreal and had a lennox air conditioner and ducts installed in the attic.
We were contacted by the owner that wanted us to clean the air ducts in a rental property as the tenants were complaining about the quality of the air.
What i ve observed attic temp 50c vent temp 21c attic temp 37c vent temp 18c attic temp 25c vent temp 13c not sure what the r value off flexible duct or main metal duct is.
The really bad news is that with old metal duct systems the only option is replacement of the ducts to stop the rain in the attic.
Assuming your ductwork is located in the attic refer to the steps below for a quick and easy do it yourself solution to thermal leaks.
Air duct cleaning in newport beach.
In more cases than not a 3 ton ac with the ducts in the attic has a ton or so of load that s just from the location of the ducts in the attic and the associated duct gains leakage etc.
In the photo attached to this article you will see an attic cleaning work and air duct cleaning in newport beach california.
The air ducts for a central hvac systems are typically located above a home in the attic or upper crawl space or underneath a home in the space between the foundation and the floor so you don t see them unless you have cause to replace them.
I was wondering is there any figures on the expected energy temp lose.
Leaking air ducts can lead to a significant loss of heated and cooled air.