Black Spots Flexible Ducts Attic

I was wondering is there any figures on the expected energy temp lose.

Black spots flexible ducts attic.

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. However when black mold starts growing in your air vents things get a little trickier. If the register is closed the air is forced along the ceiling and the next thing you know you ll start to see black buildup across your ceiling. Black dust around air vents.

In sweltering cities where temperatures often blow past 110 degrees installing ductwork on roofs and piping cool air through the oven like atmosphere doesn t make sense in terms of energy efficiency. When hvac ducts are installed in a vented attic in a dry climate bury the ducts in attic insulation to protect them from temperature extremes in the unconditioned attic space. Use metal flex or fiber board ducts that are insulated to. These are rigid ductwork and flex ductwork.

Manufacturers then cover the tube in fiberglass insulation. When black mold grows on walls floors carpets and so on it s relatively easy to spot. Duct cleaning can damage flex ducts. The flex ducts were literally filled shut with ice in the low spots compressing the scant insulation layer beneath them.

But without proper support ducts can develops sags or kinks that reduce airflow 4a 4b. This type of ductwork is usually tube shaped and is made from a wire coil covered in a bendable but durable plastic. Install ductwork so that it is in direct contact with i e laying on the ceiling and or truss lower cords. Both types of ductwork have specific features pros cons and specifications.

Most of the time dirt accumulates on ceilings because air is leaking in from the attic between the drywall and the supply register. Sometimes the best route for a flexible duct run is up and over an obstruction. You may have black mold in your air ducts if you notice any of the following signs. I live in montreal and had a lennox air conditioner and ducts installed in the attic.

The rigid insulation was saturated from condensation. I found instead a vintage 3 ton ac unit with 1 rigid insulation taped all over it and insulated flex duct snaking all over the poorly insulated attic. In order to understand why smart air doesn t recommend any sort of duct cleaning for flex ducts you need to know how flex ducts are designed and made. 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.