Duct Work For Attic Furnaces

Install ductwork so that it is in direct contact with i e laying on the ceiling and or truss lower cords.

Duct work for attic furnaces.

Different types of furnaces are manufactured to burn a variety of fuels including natural gas propane oil and firewood. Use metal flex or fiber board ducts that are insulated to code. Most older homes have anywhere from 10 leakage clear on up to 35 40 leakage through ductwork. Attic furnaces take advantage of the closer proximity to use shorter lengths of air duct.

The duct insulation should include a vapor barrier cover. Booster fans and accessories and whole house humidifiers can help make your existing ductwork system more economical. In last week s blog i discussed the practice of burying attic ducts in deep insulation since burying ducts is simply one of several ways to address the energy waste associated with the decision to locate ducts in a vented unconditioned attic it s worth taking a fresh look at all of the possible solutions to the attic duct problem. With hundreds of square feet of ductwork surface area in the attic and a δt of 75 f the air coming out of the vents in your home will be significantly higher than 55 f.

In addition its flexibility allows for easier installation in hard to reach areas. The master flow 4 in. If you have leaky ductwork in your home or office then you are losing heat or cooling from your furnace or fan coil through the sides of it. 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.

The attic ductwork is flex duct work. I called out the original hvac company and they took a look and said they saw no water. An attic furnace is closer to the upper stories of a multi level home. Recently i had another hvac company come out and put in a new bathroom vent and they told me they believed the duct work was full of water.

If it is not sealed properly then you are heating and cooling your crawlspace and or attic. Insulated flexible duct r6 silver jacket is used in standard heating and air conditioning hvac systems and some venting applications. Duct boosters efficiently improve air movement throughout your house which means your system can more quickly cool down or heat your home. It was new when the ac was put in 7 years ago.

It will not require long lengths of pipe to deliver heat to the rooms as a basement furnace does. The most common furnace fuel in the u s. This additional insulation provides greater thermal efficiency to save energy. Flexible duct can be installed in place of galvanized pipe in many applications if allowed by your local hvac codes.

Air ducts lose a fair amount of heat through leakage so shorter lengths are more efficient.