Flexible duct can degrade over time.
Change sheet metal duct to flex.
Bob s not a fan of flexible heating ductwork.
In comparison to metal duct flex duct is easier and faster to install.
Cost of installation supplies.
This is a great decision.
There s no question that flexible duct is easier to install than metal ductwork but consider this.
Flexible duct connector designed to isolate equipment noise and vibration from the ductwork proflex flexible duct connector consists of a fabric which is secured to sheet metal on both sides.
You mentioned that you were considering re insulating your current metal duct work.
If you have had problems with holes or cracks in the past this may be a good choice.
Metal ducts are more rigid due to the nature of steel making them ideal to build an entire hvac system.
This is because they re more versatile and flexible.
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.
If your budget allows you may want to consider resealing your duct work with a mastic product.
Ryan shanahan i ve been told to avoid using metal screws with flex duct because the flex can tear easily once you create a hole.
Flex ducts are better for existing trunk and branch heating and cooling systems.
The flex duct size may be different than the hard duct that runs to that room.
Typically the connector is inserted between the equipment and the ductwork.
You may need to buy a sheet metal fitting to properly connect the correct size of flex duct to the hard duct.
Most often flex duct is used to reduce cost or in places where metal duct work will not fit.
You can even use three sheet metal screws behind the first rib or two of the duct as long as you use mastic under the duct at the sheet metal connection.
It collects dust and is almost impossible to clean.
Online residential ductulator.
Sheet metal the strongest material costs more than non metallic or flexible aluminum ducting with additional labor costs for multiple turns.
Here are the itemized costs for the most common types of ductwork and supplies needed to complete installation.
The sample from above calculates out to 7 inch for flex duct size.
Flexible aluminum ducting is slightly more expensive and less prone to tearing.
Flexible duct needs to be larger than pipes to allow the same amount of airflow.
More than likely.