HVAC Distribution Warehouse Racking: Lennox

An HVAC branch warehouse stores four incompatible things at once: heavy boxed equipment, long line sets and duct, small fittings and a seasonal surge that arrives all at once. Related: Borroughs distribution center shelving and mezzanine systems.

Selective pallet rack and a storage mezzanine installed in a Salt Lake City HVAC distribution warehouse

2026

Year Lennox worked with us

Pallet rack + installation

What we supplied

HVAC distribution

Application

Seasonal peaks

The constraint that shapes the layout

The projectFour products, one buildingRacking the equipmentLong stock: line sets and ductSmall parts and the counterSeasonality and reserve stockDamage, safety and inspectionFAQs

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The project

Lennox is a heating, ventilation and air conditioning manufacturer with distribution operations across the country. Material Handling USA supplied pallet rack and installation for Lennox in 2026. The client, the year and the product category are the only project details we publish; we do not publish layouts, dimensions or contract values.

What is worth writing down is how an HVAC branch or distribution warehouse should be racked, because the product mix is unusually hostile to a single storage system. A branch that runs well is one where pallet rack systems, cantilever arms, small-parts shelving and a will-call counter were designed together rather than bought in three separate years.

Selective pallet rack loaded with boxed goods in a distribution warehouse aisle
Boxed equipment is a unit-load problem; the accessories beside it are not

Four product families, one building

Almost every HVAC distribution warehouse we quote carries the same four families, and each one wants a different storage method.

Packaged equipment. Condensers, air handlers, furnaces and packaged units. Heavy, boxed, awkward to grip, expensive, and easily dented. These are unit loads — racking work.

Long stock. Line sets, copper, flexible and rigid duct, strut, sheet metal and lengths of pipe. Nothing about these fits a pallet position.

Boxed accessories and consumables. Filters, thermostats, insulation, refrigerant, tape, fittings. High turns, small cube, picked by hand.

Parts and warranty stock. Motors, boards, compressors, coils. Low volume, high value, and disastrous when lost.

Trying to hold all four on one type of rack is the standard failure mode. You either buy pallet positions and fill them with air, or you buy shelving and end up floor-stacking equipment where the forklift has to pick around it.

Racking the equipment: what actually decides the bay

Boxed HVAC equipment looks like an easy pallet load and behaves like a difficult one.

Design input Why it matters for HVAC equipment What we ask for
Real unit weight A commercial condensing unit can weigh several times what a boxed furnace does; a bay sized for the light one is over its limit with the heavy one The heaviest SKU that will occupy that bay, not the average
Footprint versus pallet Many units overhang a standard pallet, or arrive on a skid narrower than the load Actual box dimensions of the largest item in the family
Overhang and support Loads that overhang the beams put the weight where the design does not expect it Whether the box bears on the beams, on decking, or on its own skid
Level clearance Tall units need generous clearance to place and retrieve without scraping the level above Handling method and lift-truck mast type
Handling method Slip sheets, clamps and forks all change the aisle and the beam elevation How the unit will be picked, not how it arrived

Single-deep selective pallet racking is the right default because every SKU stays directly accessible and the mix changes with the season. Where the same model is held in real depth — the top few movers before a peak — push-back racking buys density without giving up much accessibility. Where lift trucks work heavy loads in tight aisles all day, structural pallet rack earns the extra cost in dent resistance alone.

Deck the bays holding equipment

Boxed units are rarely a perfect pallet. Wire decking gives continuous support for odd skids, stops small items from dropping through, and lets sprinkler water pass. Confirm the deck rating alongside the beam rating — they are separate numbers.

Cantilever racking holding bundles of conduit and pipe sorted by diameter at a distribution yard
Cantilever arms give aisle-side access to line sets, duct and long stock

Long stock: line sets, duct and sheet metal

Long product is where HVAC warehouses lose the most time, because it is usually stored wherever there was a gap.

Cantilever is the right tool for genuinely long items. Cantilever racking has no front columns, so a bundle of line sets or lengths of duct goes on and comes off from the aisle without threading it between uprights. Arms are specified from the load per arm and the required arm length — long light bundles and short heavy ones are different designs.

Flexible duct is a cube problem, not a weight problem. Cartons of flex are light and enormous. They belong in wide, tall bays or on their own run — not occupying premium equipment positions.

Sheet metal and fittings need flat, supported storage. Sheet stock deforms if it is stored badly, and once it is out of shape it wastes fitter time on site.

Do not store long stock in a pallet bay ‘for now’. Bundles pushed through beams end up resting on the upright bracing rather than the beams, which is not what the frame is designed for. The same lesson comes up in our electrical contractor racking and building products distribution case studies.

Small parts, will-call and the counter

The counter is where a branch is judged. Contractors want to be loaded and gone, and every minute spent hunting for a filter is a minute a truck is idle.

Shelving for the small stuff, not pallet positionsFilters, fittings and controls belong on parts room shelving at the front of the building. A pallet bay holding four small cartons is an expensive way to store air.
A will-call staging area with a physical boundaryOrders picked and staged for collection need their own space, marked and out of the traffic lane — otherwise staged orders creep into the aisle and the aisle becomes the counter.
High-value parts behind a boundaryBoards, motors and compressors are small, valuable and easy to lose. A dedicated caged or controlled area near the counter costs less than the shrink it prevents.
Ergonomic pick heights for the fast moversThe twenty SKUs that make up most of the counter picks should sit between knee and shoulder height, close to the door. Everything else can be a walk.
Label the location, not just the productA location scheme that matches the branch system turns an argument into a pick. It is the cheapest productivity gain in the building.
Keep the equipment aisle away from the counterContractors on foot and lift trucks moving condensers do not mix. Separate them by layout, not by signage.
Close-up of an orange step beam, green teardrop upright and welded wire decking on a pallet rack connection
Step beams and wire decking suit mixed boxed loads that are never quite pallet-shaped

Seasonality: designing for the peak you know is coming

HVAC distribution is one of the most seasonal businesses we supply. The first serious heat wave or cold snap turns a comfortable warehouse into an overflowing one within days.

Design the rack for the peak, operate it for the average. Building to the average guarantees floor-stacked equipment in the aisles every season — which is both a safety problem and a fire-code problem.

Use depth for the pre-season buy. When you hold real depth of a handful of models ahead of the season, deeper storage pays. When the mix fragments again after the peak, selective positions are what you want back.

Keep a defined overflow zone. A planned, marked overflow area with clear rules beats improvised stacking every time. Aisles, sprinkler clearances and exits are not overflow space.

Plan the reset. Peaks end. Deciding in advance which bays revert to which family avoids the slow drift where nothing is where the system says it is.

Damage, safety, code and inspection

  • Specify from the heaviest SKU in the family. Beam capacity is published for a uniformly distributed load at a given span; a single heavy unit sitting mid-span is a different load case. See pallet racking weight capacity and keep the load application drawing on file.
  • Protect the frames where equipment is handled. Boxed units are handled slowly and close to the steel, which is exactly when uprights get clipped. Column protectors and rack guards are cheaper than replacing a frame.
  • Anchor and install to the engineered drawing. The rack’s capacity and its seismic performance assume it is plumb, anchored and built as designed — our installation crews work to the stamped layout.
  • Inspect on a schedule and after every impact. One damaged upright derates the whole bay until it is repaired: rack repair and inspection.
  • Keep flue spaces and sprinkler clearances clear. Seasonal overfilling is how flues close and how clearance under sprinklers disappears. It is worth an explicit rule.
  • Refrigerant and compressed gas have their own rules. Cylinder storage, securing and ventilation are governed separately from rack design; keep that area planned rather than absorbed into general storage.

The relevant references are ANSI MH16.1 for industrial steel storage rack design and utilization, and OSHA 1910.176 on materials handling and storage. Neither replaces a stamped design for your building and seismic design category — something we take seriously on every Utah pallet rack project.

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HVAC warehouse racking FAQs

What racking is best for an HVAC distribution warehouse?
A combination. Single-deep selective pallet rack for boxed equipment, cantilever racking for line sets, duct and long stock, shelving for filters and fittings, and a defined will-call and high-value area near the counter. The mistake is buying one system for the whole building.
Can condensers and air handlers be stored on standard pallet rack?
Yes, when the bay is specified from the heaviest unit in that family, the load is supported properly — usually with wire decking under odd skids — and there is enough level clearance to place and retrieve without scraping the level above.
How should line sets and flexible duct be stored?
Line sets and rigid long stock belong on cantilever arms sized from the load per arm. Flexible duct is light and bulky, so it should get wide, tall bays of its own rather than occupying pallet positions intended for equipment.
How do we handle seasonal peaks without floor-stacking?
Design the rack for the peak and plan a marked overflow zone with rules, rather than letting overflow take the aisles. Where you buy real depth of a few models before a season, push-back or deeper storage recovers the space you need.
Is structural rack worth it in a branch warehouse?
It is where lift trucks work heavy loads in tight aisles all day. Structural rack resists impact far better than roll-formed rack, and in a busy branch the avoided damage and downtime usually justify the difference.
Do we need anything special for refrigerant?
Refrigerant cylinders are handled under compressed gas rules rather than rack design: they need securing, appropriate ventilation and a defined storage area. Plan that space in the layout rather than absorbing it into general racking.

Branch Racking That Handles Equipment, Long Stock and the Counter

Tell us your product mix and your peak, and we will design a warehouse that works in July and in January.

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