North America’s largest indoor Quad Stacker installation
When Volkswagen Montreal undertook a major renovation of its Downtown Montreal dealership, the owner saw an opportunity to fundamentally rethink inventory storage. A new showroom and executive offices anchored the renovation, and an adjoining storage building was designed from the ground up with ParkPlus QP1000 Quad Stackers factored into the structural plans at the design stage.
The result: 34 QP1000 units delivering 136 indoor parking spaces on the footprint of what had previously been a 34-car surface lot. The installation is the largest indoor Quad Stacker system in North America, and it enabled the dealership to store four times the inventory in a climate-controlled space while expanding showroom capacity for the customer floor.
Given Quebec’s low electricity costs, electric-drive units were selected over the more common hydraulic models. The electric configuration carries LEED certification and delivers quieter, cleaner operation in an active showroom environment. The trade-off is a three-foot height premium for the overhead gearbox and motor assembly — a requirement that was accommodated at the design stage.
Four times the inventory in the same footprint
A conventional surface lot holding 34 cars was converted into an indoor storage system holding 136. That 4× capacity increase happens within the same land footprint — no additional lot acquisition, no additional structure sprawl. For a dealership competing in a dense urban market like Downtown Montreal, that is a meaningful operational advantage.
More inventory on site means faster turnaround times, more customer-facing options, and reduced reliance on off-site storage logistics. The expanded showroom capacity created by the renovation multiplied those benefits further. The electric-drive system reduces operating noise on the showroom floor and eliminates the ongoing fluid maintenance associated with hydraulic alternatives.
Capacity figures based on installed system configuration. Prior surface lot capacity per project records.
Project Photos
A cross-border installation in an active dealership
Installing a large mechanical parking system in Canada introduced logistical complexity that doesn’t arise on domestic US projects. All 34 units were shipped in containers and delivered directly to the customer for on-site assembly — ParkPlus’s standard factory-to-site shipping model does not apply across the border. Assembly, testing, commissioning, and handover all had to be executed on location in Montreal.
Construction ran across three months, with Montreal’s winters compressing the viable working window. The installation proceeded while the dealership remained fully operational, requiring careful coordination to maintain normal customer and sales activity throughout.
Planned for quads at the design stage
Because Quad Stackers were factored into the storage building’s structural design from the outset — not retrofitted — the installation proceeded on a defined timeline without structural surprises. The building’s clear height accommodated the three-foot overhead gearbox requirement of the electric models, which was planned for in advance rather than discovered mid-project.
On-site assembly and commissioning were executed to the same specification as a standard domestic installation. The choice of electric-drive units streamlined ongoing operations: quieter cycling, no hydraulic fluid management, and LEED certification that aligned with the dealership’s renovated facility standards.
This is ParkPlus’s largest indoor installation of quad stackers, and the largest of its kind in North America. It was a challenge doing this installation outside of the US as everything had to be done on-site including receiving containers, offloading, testing, commissioning and handover.
System Specifications
Common questions about Quad Stacker parking systems
How does a Quad Stacker parking system work?
A Quad Stacker is a four-level mechanical parking system that stores vehicles in vertical stacks of four, using a combination of vertical lift and horizontal carrier movement to position each vehicle on its designated platform. Vehicles are driven onto the ground-level entry platform by a valet or the driver, and the system’s controls handle all raising and positioning automatically.
Retrieval works in reverse: the system lowers the requested platform to ground level for drive-off. The PLC-based control interface manages sequencing to minimize cycle times even when multiple vehicles are being retrieved simultaneously.
How many vehicles does the QP1000 Quad Stacker accommodate per unit?
Each QP1000 Quad Stacker unit stores four vehicles, stacked vertically across four platform levels. At Volkswagen Montreal, 34 units were installed to create 136 total inventory spaces — a direct 4-to-1 multiplication of the prior surface lot capacity. Multi-unit installations can be configured side by side in a row to fill a given floor plan efficiently.
What are the height and footprint requirements for a Quad Stacker installation?
Quad Stacker systems require sufficient clear height to accommodate four stacked vehicle platforms plus the mechanical drive assembly above. Standard hydraulic models have a lower overhead profile; electric-drive models require approximately three additional feet of clear height to house the overhead gearbox and motor. For projects where height is constrained, hydraulic configurations are the practical choice.
Footprint requirements scale with the number of units and the vehicle platform size. Because the system stores cars vertically, the ground-level footprint is a fraction of what an equivalent surface lot would require, making Quad Stackers effective in both new construction and existing buildings with adequate ceiling clearance.
What is the difference between electric and hydraulic Quad Stacker drive systems?
Hydraulic Quad Stackers are the most common configuration and require slightly less overhead clearance than electric models. Electric-drive systems — like those installed at Volkswagen Montreal — use an overhead gearbox and motor assembly that requires approximately three additional feet of building height. In return, electric models are LEED certifiable, produce no hydraulic fluid that requires periodic maintenance or disposal, and operate more quietly, which can be an important consideration in showroom or mixed-use environments.
The choice between the two generally comes down to available ceiling height, energy cost structure at the site, and sustainability certification requirements for the building.
Can a Quad Stacker system be installed in an existing building?
Yes, provided the building’s structure and clear height meet the system’s requirements. The QP1000 is engineered to be assembled on-site from components, which makes it compatible with installation inside existing structures where large prefabricated assemblies cannot be craned into place. The Volkswagen Montreal project was assembled entirely on-site in this manner, with all units received as components and built out within the completed building envelope.
Retrofits require an early structural assessment to confirm ceiling height, floor load capacity, and access logistics. Projects where Quad Stackers are incorporated at the design stage, as at Volkswagen Montreal, have the advantage of structural provisions being built in from the start.
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