OTIS MEP Sourcing Checklist: Elevator Components, Stair Systems and Ventilation

When I started in procurement, I thought the hardest part of MEP sourcing was getting one supplier to quote the whole buy list. I was wrong. The real challenge is comparing quotes that include different things.

In Q2 2024, I ran a three-vendor RFQ for a light commercial package: two stair runs, a duct package, and elevator door components. The lowest quote was 18% under the incumbent. After freight, required shop drawings, and one rail-bracket mismatch, it came in about 7% higher than the incumbent. The apparent saving was not a saving at all.

This checklist is what I use now before signing a purchase order for stair systems, ventilation systems, or elevator components. It is not a substitute for engineering or legal advice. It is a way to make sure every supplier is quoting the same job.

Step 1: Start with the installed condition, not the catalog name

If you ask for a steel stair at 4 ft wide, you will get quotes that cannot be compared. One bidder assumes galvanized stringers. Another assumes shop-applied primer. Another leaves out the guardrails because they were not mentioned.

Set the details before the RFQ: rise, run, nosing, design loads, anchorage, finish, guard height, infill, and whether shop drawings need an engineer's seal. For ventilation, include airflow at design static pressure, duct pressure class, leakage class, voltage, controls protocol, and any fire or energy code requirements. The boring spec is what makes pricing comparable.

Step 2: Separate OEM elevator parts from replacement components

The search phrase Otis elevator can mean two different RFQs. It can mean a complete elevator system supplied by the manufacturer, or it can mean components for an existing unit. Treating them as the same thing is how orders go sideways.

If the project needs genuine OEM parts to preserve a warranty or service contract, order through the OEM's authorized channel. If you are buying replacement components, ask how the part is expected to work within the ASME A17.1/CSA B44 safety system used in North America (source: asme.org). Physically fitting is not the same as being accepted by the elevator company or the authority having jurisdiction.

Step 3: Check stair systems compliance requirements before awarding

IBC Chapter 10 and ANSI A117.1 cover many stairway and accessibility requirements, but state and local amendments often go further. The International Code Council (iccsafe.org) publishes model codes; actual adoption varies by state and city.

In 2023, I used identical stair drawings for two municipal projects. The local code amendments changed guard infill for one of them, and the low bidder quoted the generic version. It was not entirely the supplier's fault. The RFQ did not flag the local amendment. Now I do.

When you evaluate a stair systems distributor, ask who prepared their previous shop drawings and whether a licensed professional will seal them if the jurisdiction requires it. That question tells you whether they understand compliance or just sell material.

Step 4: Ventilation systems sourcing is about installed performance

Do not buy ventilation equipment by fan diameter alone. You need the operating point on a fan curve at the design static pressure. Filters, coils, dampers, and duct pressure all move that operating point, and a fan that looks fine in free air can be undersized once they are added.

For commercial projects, ask how the system aligns with relevant airflow and energy baselines such as ASHRAE 62.1 and ASHRAE 90.1 (source: ashrae.org). Also confirm the duct construction standard you expect, often one of the SMACNA standards, and whether leakage testing is required.

Ventilation systems sourcing is rarely a one-number match. If a supplier cannot explain the fan curve and the controls sequence, the quote is incomplete.

Step 5: Compare total cost, not line-item price

I keep a cost comparison sheet that includes more than material. Freight, shop drawings, engineering stamps, crating, unloading, split deliveries, and compliance documentation all affect the final installed cost.

• Material price
• Freight to site
• Submittal preparation
• Engineering seals if required
• Crating, blocking, or special handling
• Split delivery fees
• Documentation and testing support

Here is a real pattern I have seen in my own RFQ history: one bid looks lowest on material at $46,100. Then freight adds $3,400 and engineering drawings add $3,200, bringing the total to $52,700. The next bid is $50,600 and includes freight and drawings from the start. The low material quote was not the low total quote.

Step 6: Make the compliance paperwork part of the purchase order

If the compliance documents are not in the PO, they are not a contract requirement. I learned that the expensive way.

Before awarding, list what needs to arrive with the materials: mill test reports for stair and railing components, product data sheets for fans and controls, listing marks when applicable, stamped shop drawings if required, and operation and maintenance manuals for dampers and actuators. Put a deadline on the submittal. Do not wait until the week of installation to chase certificates.

Step 7: Pilot a new supplier with a small order

A pilot order feels like wasted time until it saves a project. In 2022, we almost signed a $76,000 order with a low-bid manufacturer. Instead, we ordered one stair assembly as a $3,400 test. The pilot surfaced an infill material substitution and a slow submittal process. We cancelled the larger order before it became a field problem.

So glad we ran that pilot. It was annoying, but it was a lot cheaper than explaining a failed inspection to a project manager.

Final word on sourcing stair systems, ventilation, and elevator components

Most of my expensive mistakes came from comparing only what was on the quote, not what was missing from it. Price differences are real. But if a quote does not include code-compatible design, freight, and documentation, it is not cheaper. It is just unfinished.

Try this checklist on your next RFQ. The goal is not to find the lowest material price. The goal is to find the lowest total cost that gets through inspection.

Pricing examples are from my own RFQ history and are for method, not current market rates. Confirm current pricing and regulatory requirements before making purchasing decisions.