Home Garden

Heating Duct Furnace Insulation

Along with insulating the interior and exterior of your home, you should insulate the heating and cooling ducts that air flows through to decrease unwanted heat loss or gain within a furnace duct by up to about 30 percent, states the U.S. Department of Energy. If you have an HVAC system installed, insulating its ducts may save you money on electrical expenses. You might have to insulate based on which direction your hot air travels through your ducts.
  1. Metal Conducts Thermal Energy

    • Thin metal surfaces conduct heat more readily than other types of surfaces.

      Electrons transfer their energy to metals much more easily than through other substances. You spend a lot more energy heating and cooling your home when you use noninsulated metal ducts, bleeding out tons of thermal energy, which makes your electric bill an unpleasant sight. Besides sealing your ducts, you can also get them insulated to increase your energy savings.

    Blanket Duct Wrap

    • Blanket insulation comes in one large roll that you wrap around your ducts.

      If you want a simple type of insulation that doesn't cost much to install and doesn't require replacing your current ducts, you may try blanket-type insulation, also known as "batt and roll." This type of insulation comes in rolls that wrap around a given space in segments. If you have a segment of duct to insulate smaller than the width of one segment of your insulation, cut the insulation to trim it down to the desired measurement. It packs a large amount of fiberglass or other material into a sheet coated with metal foil or some other type of material.

    Insulated Flexible Ducts

    • Flexible ducting works for you if you have enough money to throw into a duct changing project. Installing this kind of duct reduces the amount of hassle required to get into tight spots in your house. You don't need to work with complicated pathways since the ducts bend anywhere you want them to. The Arizona Public Service Company recommends that you get R-6 flexible ducts for the best protection and productivity.

    Reflective Insulation

    • Reflective insulation comes in a roll just like blanket insulation does.

      If you're looking for something easy to install that doesn't require protective gear, you may find reflective insulation attractive. Reflective insulation proves a good option for the average handyman who wants an effective barrier against thermal energy loss. It also protects your ducts from thermal loss just about as much as blanket duct wrap does, but it doesn't have any fiberglass or other materials that make your hands itchy after you finish handling it.