Aluminum ducts are used to move air in HVAC systems and home drying systems due to their resistance to corrosion. They can be rigid or flexible, and insulation can be added for better thermal control. Aluminum ducts are easy to install and maintain an airtight cavity. An aluminum duct is a passageway made from aluminum […]
A junction box protects electrical or telecommunication connections and is made of heavy-duty steel with a watertight interior. They are common in low-density areas and industrial areas, and can be found in commercial and residential buildings. They divide internal systems and aid in billing and surge protection. A junction box is a metal box that […]
Air ducts are hollow tubes made of sheet metal that carry heated or cooled air around a building. Vents regulate temperature in rooms, but leaky ducts waste energy and can cause respiratory problems. Regular cleaning and maintenance are recommended, and professionals can be hired for a thorough cleaning and inspection. An air duct is a […]
Cable trays are used to house cables that need to cross traffic areas or be hidden. They can be made of different materials and are popular in industrial settings to avoid tripping hazards. Cable ducts allow for the passage of multiple cables and can be secured with brackets or adhesive. Once in place, the conduit […]
Air return ducts are hidden passages that extract air from a room and recycle it through central heating or cooling systems. They are usually located in corridors or ceilings and should be sealed to prevent unconditioned air from entering. Proper vent locations and clean filters are also important for efficient operation. An air return duct […]
Conduit pipes transport gases, liquids or solids in buildings. They come in various materials and sizes for different applications, including residential HVAC, dryer vents, range hoods, and industrial use. Fans are often used to move air, and specialized duct work is required for hazardous or corrosive materials. Rigid spiral duct is popular for large building […]
Sheet metal is commonly used for heat and air conditioning ductwork. The main line has smaller branch feeder trunks, connected with takeoffs. Elbows, offsets, reducers, wyes, T-plugs, and log boots are used to align and connect ducts. Return air ducts may use panning. Dampers regulate airflow, and joints must be sealed with putty or adhesive. […]
Duct construction methods vary based on the type of duct and physical space constraints. There are three main types of duct systems: low, medium, and high pressure. Components like diffusers and filters may be needed. Ducts maximize ventilation efficiency and eliminate vibration to reduce pressure loss. Sealing joints and seams is important to avoid air […]
Repairing air conditioning ducts is important to maintain system efficiency and reduce costs. Duct tape, caulking, and aerosol-based sealants are quick and inexpensive options for minor leaks. Flushing ducts and using sealants can prevent rust and improve air quality. Repairing an air conditioning duct is extremely important. Even small punctures can greatly reduce system efficiency, […]
Flexible ducts are used in HVAC systems and can be installed in tight spaces. They can be made of different materials, insulated or uninsulated, and have varying life expectancies. Some are environmentally friendly and fire-resistant, but can be damaged by UV light. Insulated ducts can save energy and prevent bacterial growth. They are usually packaged […]
Two methods for determining the correct size of HVAC ducts are the equal friction method and the static recovery method. Other factors such as cubic feet per minute, total length of the system, and proper connections are important. Software programs can be used to calculate duct size. The choice of duct type affects the layout […]
Choosing the best duct layout involves routing, sizing, and accounting for architectural obstacles. Software can help determine optimal duct size and estimate costs. Building constraints and access to system controls must be considered. HVAC contractors typically design duct layouts, but modifications may be necessary. Nomographs and software can calculate optimal duct sizing and routing, with […]
Duct fans, also known as booster fans, improve air circulation and ventilation in heating and air conditioning ducts. They force air into hard-to-reach rooms and remove stale air, humidity, and odors. Buyers should choose a fan with the same diameter or length and width as the duct. There are two types of duct blowers: in-line […]
Duct fans improve air circulation and ventilation in heating and air conditioning systems. They come in two types, inline and centrifugal, and should be selected based on duct size and material. They can reduce equipment costs and improve energy efficiency. A duct fan is a type of supplementary fan used within heating or air conditioning […]
Ductwork can be installed in different ways depending on location and type. Simple methods include hanging duct from a wall/ceiling or using available space in an attic/crawl space. Installing duct within a floor is more difficult. It’s important to consult professionals for installation. There are many different methods of installing ductwork in a building. Methods […]
Exhaust ducts remove harmful fumes and particulate matter from work areas or buildings. They should be properly vented to prevent fire hazards and health risks. Exhaust ducts connect to range hoods or exhaust outlets and should be made of metal to reduce fire hazards. Proper installation is important to prevent damage to the building’s structure. […]
Different types of duct supports secure heating and air conditioning ducts to walls or ceilings. Installers choose from trapeze hooks, strap hooks, or steel cables based on the application. Material and size must be carefully considered for proper support and maintenance access. Different types of duct supports are used to secure heating and air conditioning […]
Joint tape is used to finish drywall joints before painting. There are two types: paper tape and self-adhesive mesh tape. The process involves applying drywall mud, smoothing the tape, and sanding it down. Joint tape is also used for repairing holes in drywall. Joint compound dries quickly, so it’s important to strategize before mixing. Joint […]
A duct damper controls airflow in HVAC ducts, regulating temperature, humidity, and fumes. It can take different forms, including rotating hinge, louvre, and sash dampers. There are two types of designs: volumetric air dampers and fire/smoke dampers. Manual operation is available, but may not be practical in emergencies. The damper must fit precisely within the […]
HVAC duct systems are essential for heating, ventilation, and air conditioning in buildings. They can be made of various materials, and proper installation is crucial for comfort and air quality. Maintenance strategies, including replacing air filters and maintaining refrigerant levels, can prevent high costs. Good design and maintenance can help avoid air quality and heating/cooling […]
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