Change Sheet Metal Duct To Flex

It collects dust and is almost impossible to clean.

Change sheet metal duct to flex.

This is because they re more versatile and flexible. If your budget allows you may want to consider resealing your duct work with a mastic product. 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. 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.

More than likely. Bob s not a fan of flexible heating ductwork. Long poorly supported runs of flex duct sag stress and separate rigid ducting systems often called hard pipe are prone to their own brand of installer pitfalls particularly extra duct length if cutting off is awkward or just too time consuming unnecessary dead end extents are sometimes capped off and left. You mentioned that you were considering re insulating your current metal duct work.

Flex ducts are better for existing trunk and branch heating and cooling systems. Online residential ductulator. 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. The flex duct size may be different than the hard duct that runs to that room.

If you have had problems with holes or cracks in the past this may be a good choice. Cost of installation supplies. Most often flex duct is used to reduce cost or in places where metal duct work will not fit. You may need to buy a sheet metal fitting to properly connect the correct size of flex duct to the hard duct.

There s no question that flexible duct is easier to install than metal ductwork but consider this. Flexible duct needs to be larger than pipes to allow the same amount of airflow. Typically the connector is inserted between the equipment and the ductwork. The sample from above calculates out to 7 inch for flex duct size.

Metal ducts are more rigid due to the nature of steel making them ideal to build an entire hvac system. This is a great decision. 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. Here are the itemized costs for the most common types of ductwork and supplies needed to complete installation.

In comparison to metal duct flex duct is easier and faster to install. Pull the duct from the boots and set it aside to either be thrown away or recycled. Flexible aluminum ducting is slightly more expensive and less prone to tearing.