Replacing Damaged Duct at Cloquet Schools

Location: Cloquet, MN
Contractor: Central Sheet Metal
Engineering Firm:
Hallberg Engineering
Rep Firm:
SVL, Inc.
Q Duct®


  • Estimated saving with Q Duct over the original metal duct with failing insulation = $23,234
  • The 9-year old metal duct was replaced due to failing insulation.
  • Estimated 10 Year Energy Savings with Q Duct = $255,574

Replacing Damaged Duct - Cloquet MN


AQC Industries was brought on to assist the Cloquet Independent School District No. 94, located in Northern Minnesota, near Duluth. The scope of this project was the result of a $15.9 million bond referendum that included work at five schools within the district, including Washington and Churchill Elementary School. The work included replacing the failing and outdoor duct with external insulation. This project started at the beginning of Summer and completed on time, before the start of the Fall school year.


Bad Duct - Replace Damaged Ducts
Preexisting damaged duct system at Cloquet Schools

The biggest challenge the team came across during this project was the deterioration of the existing 9-year old outdoor duct system. The duct was rotting, and insulation was compromised, resulting in a diminished R-value. Hallberg weighed the costs of repairing the old system or installing a new Q Duct system; it was evident that Q Duct was the best solution. The cost to insulate the existing duct exceeded the investment of installing brand new Q Duct, saving the schools money and providing the ability to rest assured knowing that they were installing a quality product that will last years to come.


Because of the condition of the preexisting duct, Hallberg Engineering selected Q Duct to replace the existing duct. Q Duct was determined to be the best option available in terms of the least amount of leakage, best thermal integrity, competitive price point and durability. During the process, SVL assisted in budgeting, design drawings, and specifications for bidding. Both projects utilized Q Duct’s new features, such as the sloped roof (Q Shed®), to prevent water pooling and the quick support mounting system (Q Rail®) that results in saving contractors time and money. With Q Duct, the owner will have the best outdoor insulted duct for the next 20+ years.

Q Duct


Damaged Ducts Replaced

Both schools were very pleased with the results. The SVL team complimented AQC for ensuring accuracy on the bill of materials, and the contractor installed the Q Duct system correctly. As with all AQC product installations, the installation contractors went through product training before installation. AQC also provided on-site installation training to oversee the process and to ensure any questions would be able to be addressed on the spot.


AQC’s Q Duct is constructed to withstand harsh weather. It requires no additional insulation or weatherproofing, and the sections are delivered pre-assembled ready for installation. The product’s unique design installs in a fraction of the time of sheet metal duct, saving money and labor. The product is sold through a nation-wide network of knowledgeable representatives and distributors.

About the Rep 

SVL, Inc. is a Midwest equipment manufacturer’s representative providing HVAC solutions to scale for over 50 years, striving to provide premier solutions that integrate into every project. Through humble beginnings and maintaining a small business mentality, SVL knows the value of customer relationships, which is why they go the extra mile to exceed expectations. As you work through the design, selection, installation, and operation processes, SVL will guide you every step of the way. When you work with SVL, you are One Team with One Mission.