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When to insulate duct work
Ductwork refers to the system of ducts and pipes that circulate heated or cooled air throughout your house. There are mainly 3 benefits of ductwork insulation: lowered utility bills, reduced energy consumption, and a more comfortable home. Efficient and well-designed duct systems distribute air properly throughout your home without leaking to keep all rooms at a comfortable temperature. The system should provide balanced supply and return flow to maintain a neutral pressure within the house.
Heat loss through the duct walls is an expected and inevitable drain on the system. Effective thermal insulation of the ductwork reduces this heat loss and helps to minimize energy usage. So when to insulate and how to insulate duct work?
Pre-insulated duct works
Pre-insulated duct work system is designed to enable HVAC ducts to be constructed in a single operation, without the need for metal ductwork. The new generation of glass mineral wool duct board provides built-in thermal insulation and sound absorption, so there is no need for further insulation to be added once the duct is fabricated. The pre-insulated panel is usually made of a unique sandwich construction that is the result of injecting PUR (Polyurethane) or PIR (Polyisocyanurate) as the core material laminated with aluminium facing on both sides.
There are many benefits of using PID pre-insulated systems. Firstly, the installed cost can be up to 10% cheaper than sheet metal ducting. It’s 15% of the weight of sheet metal ducting, and can be installed quickly by two people. It can be 3m longer segments rather than 1.2/1.5m.
HVAC contractors often use HVAC PID duct cutting machine to fabricate pre-insulated ducts. There are many CNC duct fabrication machines available in the market. But not all of them are used to cut pre-insulated ducts specifically. So when you search for a HVAC PID duct cutting machine, please make sure it’s used to cut HVAC pre-insulated ducts. Some suppliers claimed their HVAC PID duct cutting machine cuts duct boards, but actually they can also be used to cut woods, furnitures, foams ect. These non-professional HVAC PID duct cutting machines will do some damages to the materials and lead to waste. So please search for a professional manufacturer who supplies specialized HVAC PID duct cutting machines. This might save you lots of time and money.
The other popular material used for heating and cooling ducts is fiberglass. Fiberglass is a type of fiber primarily composed of glass that is used in a wide variety of applications, and is predominantly employed as a residential and commercial thermal insulator. It is available in various thicknesses. There is flexible duct wrap as well as rigid insulation board. Depending on the sizes and shapes of your duct, your budget, and your application, you can use flexible duct wrap or rigid insulation board. Fiberglass is an attractive choice for home insulation because it poses no fire hazard. According to some estimates, thermal insulation (made from fiberglass and its alternatives) conserves 12 times as much energy as is lost in its production, and it may reduce residential energy costs by up to 40%. The ductwork in unconditioned areas, such as basements, floors, and ceilings is where ductwork insulation is most necessary.
In conclusion, you can choose to pre-insulated ductworks, or Fiberglass insulation for your projects.
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