Loren Cook Fans, Vents & Blowers


Air Circulators

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Loren Cook CAC-ACH Air Circulators
  • Fully assembled non-oscillating circulating fan heads
  • Grill: Double locking, chrome plated steel wire guards
  • Blade: Steel hub/spider and aluminum paddles
  • Cord: SJT Type, 3-conductor, 12′ long
  • Meets federal OSHA requirements
  • ETL C/US Listed


Ceiling, Wall & Cabinet Fans

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Loren Cook Gemini

Gemini fans provide maximum performance, durability, and ease of installation in various ceiling (GC) and inline (GN) clean-air exhaust applications.

Available in a range of sizes, all with direct drive motors in either single-wide or double-wide construction, Gemini fans are easily field convertible from ceiling to inline or inline to ceiling, depending on the installation needs.

DB (Duct Blower)

Ceiling, Wall & Cabinet Fans

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Loren Cook DB (Duct Blower)

DB Series fans are centrifugal, in-line fans with a double-width, double-inlet forward-curved blower inside the housing. Belt drive, duct (square) mount. Used in various commercial applications where the air is ducted through the building. An economical choice for low-speed, low-pressure general ventilation applications.

  • Multiple access doors for service
  • Slip-fit duct connection
  • Factory-installed horizontal mounting brackets
  • Motor mounting inside the housing for compact design


Roof Mounted Centrifugal Supply Fan

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Loren Cook KSP - Roof Mounted Centrifugal Supply Fan

Loren Cook Company’s Kitchen Supply Packaged Unit (KSP) product line provides maximum performance and durability in kitchen supply applications. Belt or direct drive, curb mount unit with washable aluminum filters.

  • Forward-curved centrifugal supply unit
  • Standard with 1-inch washable aluminum filters (2-inch available)
  • Option side discharge construction available
  • Designed to meet NFPA 96 fresh air arrangement


Centrifugal Roof Exhaust Fan

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Loren Coook ACE Centrifugal Roof Exhaust Fan

Spun aluminum centrifugal roof exhauster. Downblast, belt or direct drive, curb mount. They are common in a variety of commercial to light industrial applications. Economical choice for general ventilation needs. Available with optional hurricane (NOA) certification.

  • Lifting lugs
  • Cast regreasable bearings (belt drive)
  • Welded curb cap corners
  • Easy motor access, no tools required


Centrifugal Square Inline Fans

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Loren Cook SQN Centrifugal Square Inline Fans

The SQN has the shortest depth of any available square inline fan. Standard universal mounting feet allow the customer to control the fan’s installation without purchasing any mounting accessories. Three access doors enable total access to the fan’s internal components. Side discharge options reduce installation costs, pressure loss, system effect, and space requirements.

The SQN-B, SQN-HP and SQN-D are licensed to bear the AMCA Certified Ratings Seal for Air and Sound Performance.

Economizer Fan

Roof Mount Propeller Fan

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Loren Cook Economizer Fan

Changes in the outdoor air temperature, production processes within a facility, and occupancy within a facility often dictate a building’s ventilation requirements.

Loren Cook Company’s Economizer Fan offers the flexibility to maintain comfortable temperatures in factories, gymnasiums, equipment rooms, warehouses, manufacturing plants or other facilities with a high internal heat load. Mixing cool outdoor air with warm inside air (free cooling) provides any facility with a more comfortable air temperature. It is the fan’s most economical function.

The Economizer Fan can also recirculate inside air, supply cool outdoor air to a facility, or exhaust warm or contaminated air.

Single Wide Blowers

Flat Blade & Airfoil Centrifugal Blowers

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Loren Cook Single Wide Blowers

Loren Cook CA/CF centrifugal blowers are a fit for heavy-duty supply, exhaust, or return air applications. CA/CF blowers are available in AMCA standard discharges and rotations.

Manufactured in an ISO 9001 certified facility and listed by Underwriters Laboratory (UL 705) and UL Listed for Canada (cUL 705).

Gravity Ventilators

Ventilation Accessories

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Loren Cook Gravity Ventilators

A family of units designed for natural gravity ventilation. ASHRAE guidelines for indoor air quality require fresh air provided by natural or gravity ventilation. Additional gravity units can balance the pressure within a building, either due to wind pressure or thermal buoyancy.

Hooded Propeller

Roof Fans

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Loren Cook Hooded Propeller

Loren Cook H Series Propeller Roof Ventilators are applicable in industrial or commercial applications requiring a low-profile rooftop design. The H Series is available in exhaust, supply, or filtered supply configurations and utilizes either the X.STREAM high-efficiency fabricated steel propeller for low- and medium-pressure applications or an extruded aluminum airfoil propeller for higher-pressure applications.

  • The H Series consists of HXE – Hooded X.STREAM Exhaust
  • HXS – Hooded X.STREAM Supply
  • HXF – Hooded X.STREAM Filtered
  • HEE – Hooded Extruded Aluminum Airfoil Exhaust
  • HES – Hooded Extruded Aluminum Airfoil Supply
  • HEF – Hooded Extruded Aluminum Airfoil Filtered and HER – Hooded Extruded Aluminum Airfoil Reversible

Models HXE, HXS and HXF are available in sizes 20–60″, with both low- and medium-pressure props. Models HEE, HES, HEF and HER are available in sizes 24–60″.

Material Handlers

Radial Blade Centrifugal Blower

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Loren Cook Material Handlers

The Cook series of industrial material handlers provide for the continuous movement of material-laden air. It is well suited for installations involving exhaust, material conveying, pollution control, air circulation, and various other uses.

Type IMH fans are available in standard arrangements 1, 4, 8, 9, and 10 and custom designs by consultation with the factory. Standard duty construction allows for operation up to 12,000 fpm tip speed. Heavy-duty designs include tip speeds to 20,000 fpm. Type IMH is available with a full range of accessories allowing adaptation to many different applications.

Low Contour Roof Ventilators


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Loren Cook Low Contour Roof Vent

Loren Cook LC Power Roof Ventilators have been designed to provide a low silhouette for clean architectural lines. Their flow range, in general, is higher than traditional spun aluminum roof exhausters.

  • Lifting lugs
  • Cast regreasable bearings (belt drive)
  • Welded curb cap corners
  • Hooded unit


Centrifugal Plenum Blower

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Loren Cook PLC

Loren Cook Centrifugal Plenum Fan is an unhoused fan for operation in plenum installations such as air handling units. The fan pressurizes the plenum in which it operates so ductwork can connect directly to the plenum.

The fan’s design saves space by eliminating the fan housing and ductwork transition to the fan discharge. PLC is available in aluminum and steel construction with 12–73″ diameter wheels and in Class I, II, and III.

Propeller Inline

Package Supply or Exhaust Wall Fan

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Loren Cook Inline Propeller

Loren Cook Propeller Axial Units with wall housings and shutters are available with extruded or cast aluminum propellers with factory-set pitch based on specified performance. (Stamped aluminum and X.Stream steel propellers are also available.)

Units are available in both belt and direct drive. The Pac Fan design requires no field assembly and can be mounted directly into the wall opening.

Propeller Roof Fans

Roof Fans

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Loren Cook Propeller Roof Fans

Loren Cook Company Propeller Roof fans are applicable for industrial and commercial and industrial supply or exhaust applications. The fans are available in both spun aluminum and architectural tiered aluminum construction and offer performance ranging from 1,000 to 40,000 cfm.

Loren Cook manufactures all units in an ISO 9001 certified facility. Units are listed by Underwriters Laboratories (UL 705) and listed for Canada (cUL 705).

Propeller Wall Fans

Wall Fans

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Loren Cook Propeller Wall Fans

Loren Cook offers Propeller Wall Fans with four styles of propellers, in two drive configurations, and with a variety of available accessories to adapt the fans to many different installations.

Tubeaxial / Vaneaxial Fans

Upblast Roof Exhaust Fans

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Loren Cook Tubeaxial

As the name implies, these propeller axial units have round tube housing and are primarily used to move high volumes of air through a duct system.

Housings are either with or without vane sections. System design, pressure and desired efficiency determine whether a vane section is appropriate.

QMX Tubular Mixed Flow Fans

Mixed Flow & Centrifugal Blowers

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Loren Cook QMX

The QMX mixed flow wheel combines the high airflow features of an axial fan with the pressure capabilities and static efficiency of a centrifugal blower. QMX can be two to three fan sizes smaller than an equivalent performing tubular inline blower, resulting in significant space and cost savings.

  • Designed for supply, exhaust, or return air movement applications
  • 500–179,000 cfm
  • Static pressures up to 15″ wc


Tubular Inline Centrifugal Fan

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Loren Cook TCN

Centrifugal in-line fan, available with aluminum backward inclined or welded steel wheel. Belt or direct drive, duct (round) mount, with universal mounting brackets for either vertical or horizontal installation with universal mounting brackets. They are applicable in various commercial and light industrial applications where the air is ducted through the building.

  • Cast regreasable bearings (belt drive)
  • Field adjustable motor position (belt drive)
  • Welded construction
  • Four-bolt motor plate for positive belt tensioning (belt drive)
  • Spark-resistant construction available upon request
  • Flanged inlet and outlet connections

Propeller Upblast

Axial Propeller Fans

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Loren Cook Propeller Upblast

Propeller Upblast Fans are axial propeller fans installed on roof curbs. These fans work best for non-ducted systems to exhaust high volumes of air up and away from the roof. Fans are standard with integral butterfly dampers that prevent the intrusion of weather into the building.


Vent Sets

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Loren Cook CP

Loren Cook CP Series centrifugal vent sets offer durability and reliability in a self-contained package. The CP vent sets are ideal for low to medium volume and pressure applications and are available in a number of wheel options for maximum performance flexibility. All units are produced in an ISO 9001 certified facility and are listed by Underwriters Laboratory (UL 705) and UL Listed for Canada (cUL 705).

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                      Jim Lubratt

                      President & Chief Executive Officer

                      Jim Lubratt has been president of SVL since 2006. He first joined the company as a sales engineer in 1992 and was made a partner in 2000. He holds a Bachelor of Science in mechanical engineering from Southern Methodist University and first entered the HVAC industry as a marketing engineer for a heat pump manufacturer in Texas.

                      In addition to his role at SVL, Jim is vice president of AQC Industries, LLC, a manufacturer of specialized underground ductwork systems. He is also an investor and board member for Hydromx, Inc., a manufacturer of heat transfer nanofluids, and Crotega, Inc., creators of personal and building security solutions.

                      Jim and his wife, Tracy, met in college and married in 1993. They have three children, two of whom have graduated college in Texas, while their youngest is attending Grand Canyon University in Arizona.

                      Outside of work, Jim places a priority on his faith, family, friends, and fitness. He enjoys helping people-supporting charities, time with his wife and kids, road-biking with friends and efforts to stay physically fit.

                      A message from Jim on the achievements of SVL

                      SVL started in February 1967 by Charlie Schwab and Craig Vollhaber. Schwab-Vollhaber, Inc. (as it was named at the time) steadily grew and, in 1985, welcomed Paul Lubratt as another partner, becoming Schwab-Vollhaber-Lubratt, Inc. SVL’s founders had the determination to build the most talented, customer-focused HVAC representative in the Midwest. Our original drive and passion still shape the company and culture to this day. The achievements of an organization are the results of the combined efforts of every individual. From humble beginnings, SVL founders paved the way to industry success with hard work and determination. “Today, SVL is strongly organized with great people to lead our industry forward as we are challenged with fast-paced changes to reduce our environmental impact,” says Jim. Now, 55+ years later, SVL is under the leadership of two new principals who share the same vision and drive that has propelled SVL throughout the years. Built on a foundation of integrity, Jim Lubratt, and Charlie Vollhaber strive to ensure opportunities for personal growth, improved work environment, and shared life enrichment. The achievements of our organization are the results of the combined efforts of every individual.

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                      Charlie Vollhaber

                      Executive Vice President & Officer

                      Charlie Vollhaber is a third-generation employee at SVL, as a grandson of company co-founder Craig Vollhaber and son of former CEO Todd Vollhaber. Charlie holds a Bachelor of Science in mechanical engineering and an MBA, both from the University of Minnesota. He became an outside salesman for SVL in 2013, was made a partner in 2019, and then executive vice president and officer in 2022.

                      He grew up playing sports, including football, basketball, golf, and track, and enjoys the competitive nature of the HVAC industry. “I like that no two days are ever the same as there are always questions to answer and problems to solve,” he says. “Most of all, I enjoy working with great people and coordinating together on challenging projects to achieve positive results together.”

                      Outside of work, Charlie enjoys spending time with his wife, Lesley, and their three boys. He’s also fond of golfing, traveling, and attending concerts and sporting events. One of his favorite quotes is from the book of Philippians: “Do nothing from selfish ambition or conceit, but in humility count other more significant than yourselves. Let each of you look not only to his own interests, but also to the interests of others.” Because HVAC and construction is such a team effort, he says, “this mindset helps to create positive results in a vast majority of situations.”

                      A message from Charlie on the culture of SVL

                      “At SVL, we strive to cultivate a unique culture that revolves around finding and empowering exceptional individuals. We believe in equipping our team members with the right tools and resources to succeed.

                      As we’ve grown the business, we have deliberately maintained a small firm culture, fostering an environment where collaboration thrives. We encourage open dialogue and promote a sense of comfort among our employees, allowing anyone to ask questions and seek guidance from anyone else, regardless of their level within the organization.

                      We foster a workshop-like atmosphere where everyone’s contribution is valued. Presenting your work to another individual or a group of teammates provides a platform for collaboration, where ideas are shared, dissected, and improved collectively. We firmly believe in the power of mentoring and provide various avenues for both formal and informal guidance. Whether it’s through structured training programs or casual conversations, we encourage team members to discuss a wide range of topics, from work-related successes or issues to everyday personal life topics.

                      In summary, our culture is built on the foundation of attracting exceptional individuals, empowering them with the necessary tools, and fostering a collaborative environment where mentorship and growth thrive. We are committed to creating an atmosphere where every team member feels supported, valued, and encouraged to reach their fullest potential.”

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                      Al Gramse

                      Vice President of SVL Service Corporation

                      Al Gramse has been in the HVAC industry for over 30 years. He began as a service technician.  Then over his career worked in technical support, building automation, then service manager prior to his current role.

                      How did Al end up in the HVAC industry?  “After high school, I took a couple years to figure out what I wanted to do.   Where I was working at the time, a grumpy old coworker, who I didn’t get along with, walked up to me and said ‘What are you doing here?  Go back to school.’”  I said, “For what?”  He said “There’s a tech school down the street.  Go down there and pick something that interests you”. Then he walked away.  That weird interaction, with someone I didn’t get along with, sent me down a 30-year path in the HVAC industry.   Never underestimate the potential of a little encouragement.   Even if it is from a strange source.

                      Al has been with SVL for 15 years and is the head of our SVL Service division. “The people here are some of the best in the industry,” Al says. “A bunch of team-oriented, knowledgeable, go-getters.” His personal mantra is “figure it out,” “Do a little fact-finding on your own. Use your own brain before you use someone else’s. But know when to ask for help.” he prescribes. “It’s amazing what you can accomplish on your own if you dig in a little bit.”

                      Outside of work, Al has lots of outdoor hobbies, including hunting, fishing, and motorcycling, though his favorite pastime is simply hanging out with family.

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                      Jennifer Roach

                      Director of Marketing, Events & Administration

                      More than just a creative director, Jen brings 30 years of marketing and leadership magic to SVL. Her journey began in the trenches of graphic design, quickly evolving into crafting eye-catching campaigns for iconic brands like Target, Gabberts, Gander Mountain and Camping World. As a seasoned director and agency veteran, she honed her skills with recreational vehicle giant Parts Unlimited before leading creative teams at HOM Furniture and, ultimately, landing at SVL during a crucial growth phase.

                      Jen thrives on "servant-leadership," empowering her team and fostering a culture of trust and mutual respect. "It unlocks their potential, fuels creativity, and leads to work we're all proud of," she says. "I want my team to care, collaborate, and push boundaries together."

                      When not shaping impactful campaigns, Jen enjoys weekend adventures with her husband, Scott, and son, Crew. Their lives are a tapestry of shared passions, from bike rides and baking experiments to cheering on Simley High School wrestlers. And with her recently built forever home in Cottage Grove, her free time now includes a new, thrilling chapter: weekend renovation warrior!

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