It was new when the ac was put in 7 years ago.
Flexible ac ducts in attic.
I live in montreal and had a lennox air conditioner and ducts installed in the attic.
Arizona home performance standards require that every flex connection be sealed with mastic for a 50 year plus lifespan.
I ve written a lot about duct problems especially those in flex duct because they re so abundant.
If your ductwork is not properly sealed every time the hvac unit kicks on you are throwing money out the window by heating and cooling the attic.
I was wondering is there any figures on the expected energy temp lose.
But without proper support ducts can develops sags or kinks that reduce airflow 4a 4b.
1 10 5 25 per foot insulated flexible duct 4 to 16 diameters used as branches or in radial duct attic systems 2 30 13 00 per foot round and oval sheet metal duct 3 to 8 diameters typically used for trunks in small homes and.
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.
Item 1790033 model 1790033.
Here are the itemized costs for the most common types of ductwork and supplies needed to complete installation.
Sometimes the best route for a flexible duct run is up and over an obstruction.
I called out the original hvac company and they took a look and said they saw no water.
To prevent problems use saddles or straps to support at regular intervals 4c 4d follow the manufacturer s instructions but in case they get lost here is a list of best practices for.
In homes older than 20 years duct tape may have been used as a sealer.
The master flow 6 in.
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.
A couple of years ago i even wrote an article about whether or not flex duct should be banned.
Insulated flexible duct r8 silver jacket is used in standard heating and air conditioning hvac systems and some venting applications.
This additional insulation provides greater thermal efficiency to save energy.
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Lambro rigiflex 4 in x 96 in aluminum semi rigid flexible duct.
The duct has r8 insulation which contains 50 more insulation than the standard r4 2 product.
The attic ductwork is flex duct work.
Cost of installation supplies.
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.
