hvac-14 min read
HVAC Duct Accessories to Always Have
SquarePeg|August 4, 2025

In the world of HVAC installation and maintenance, having the right ductwork accessories on hand is essential for a smooth, durable, and efficient system. Beyond the ductwork itself, these components play key roles in system longevity, safety, and performance. Here’s a look at six must-have ductwork accessories available from Square Peg Supply and why they’re important for every professional’s toolkit.
1. Duct Liner (DULH4)
A high-quality duct liner is crucial for sound attenuation and thermal insulation within your duct systems. It helps reduce noise generated by airflow and equipment operation, providing a quieter environment for occupants. Additionally, duct liners improve energy efficiency by minimizing heat loss or gain through the duct walls, making them a smart choice for maintaining system performance.
2. Storm Collar (MF8MSC)
The storm collar is an essential weatherproofing accessory used on vent pipes and chimney flues. It prevents water from seeping into joints where the pipe passes through roofing materials, protecting your building from leaks and water damage. Durable and easy to install, a storm collar is a simple yet effective way to enhance system protection in all weather conditions.
3. Duct Strapping (FDSTRAPBKBHS)
Duct strapping provides sturdy support and secure fastening for duct runs, ensuring they stay properly aligned and suspended. Using high-quality strapping prevents sagging and unwanted movement that can lead to leaks, system inefficiencies, or noise issues. Its strength and reliability make it a staple accessory for duct installation and maintenance.
4. Hanging Wire (DIV710185G)
Hanging wire is the backbone of proper duct support, used to suspend ducts from ceilings or structural elements securely. It keeps ducts in place, maintaining proper pitch for drainage and preventing strain on duct joints. This simple accessory is vital for safe and compliant duct installations.
5. Pan Sensor (AG4200E)
The pan sensor is an intelligent safety device that detects water in drain pans, alerting building managers to potential leaks or drainage issues before they cause damage. Early detection helps avoid costly repairs and downtime, making pan sensors an indispensable part of preventative HVAC maintenance.
6. Drain Pan (AC30230602)
A drain pan collects condensation from air handlers and evaporator coils, preventing water from damaging ceilings, floors, or walls. Using a durable, properly sized drain pan is essential for controlling moisture and protecting the building’s structure. It’s a fundamental accessory that ensures your HVAC system operates safely and cleanly.
The Right Accessories Make All the Difference
Every HVAC professional knows the importance of reliable components beyond the core equipment. Having these ductwork accessories ready can make installation smoother, enhance system durability, and provide peace of mind for both you and your customers.
Browse the full collection at Square Peg Supply to keep your toolkit stocked with the best HVAC accessories.
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