A cut sheet is great for figuring out specific details on the equipment in terms of how it performs — capacity, electrical, and dimensions. A full submittal contains that information plus more — typically what’s required by the engineer or owner, as mentioned in the project specifications.
If you’ve ever started a new role in construction or come across these two terms and wondered which one to send when, you’re not alone. The line between a cut sheet and a full submittal isn’t always obvious — and in my experience, people use the terms interchangeably even when they shouldn’t. This post breaks down the real difference based on how these documents actually get used on commercial projects, where each one fits, and the mistakes I’ve seen cost real money when they get confused.
What Is a Cut Sheet?
A cut sheet is a manufacturer’s data document for a specific piece of equipment. It tells you how the equipment performs and what you need to know to install it correctly.
Lately, when I get a cut sheet, what I’m actually doing is requesting a preliminary submittal from a vendor. The vendor makes an equipment selection based on information I feed them — dimensions of the existing equipment and an equipment tag pulled from the unit on site. They take that, do some digging to identify the existing model, and once they make a selection, their software generates a cut sheet that comes back to me for review. That’s how the “cut sheet” actually shows up in real workflow — not as a static document I pull from a website, but as a deliverable from a vendor based on a real selection.
What Information a Cut Sheet Includes
Most cut sheets I review contain:
- Cooling capacity (tonnage, for chillers and condensing units)
- Electrical requirements (voltage, full load amps)
- Equipment dimensions
- Performance specs (efficiency ratings, flow rates, etc.)
- Certified drawings — these are often included, though sometimes they come separately
The cut sheet I get is usually for a new model that doesn’t match the existing equipment. The existing equipment is often old enough that the same model isn’t even made anymore. So the vendor’s job is to find the closest current model that meets the application, and the cut sheet they send back lets me verify it.
What to Check When Reviewing a Cut Sheet
When I open the PDF, I check three things — all three matter, none more important than the others:
- Cooling capacity / tonnage. Especially for chillers or condensing units. The capacity has to match what the project needs.
- Electrical — voltage especially. Full load amps helps, but voltage is what’ll bite you if it’s wrong. The existing service has to handle what you’re ordering.
- Dimensions. Make sure the new equipment will physically fit in the space available.
None of these is optional. A unit on the wrong voltage requires panel work or a new selection. A unit that doesn’t fit creates a layout problem in the field. A unit with the wrong capacity won’t meet the project requirements. Review all three with equal care.
What Are Certified Drawings?
Certified drawings often come with the cut sheet, and they’re worth understanding separately. Certified drawings give you all the dimensions of the equipment you’re ordering, shown from multiple views — front, plan, elevation, side, sometimes isometric.
For a chiller, you’ll see dimensions for the width of the entire unit, the width of just the base, the height of the barrels, the height of the control panel, and the height of the compressor. That level of detail lets you confirm not just will it fit through the door but will it fit in the actual mechanical room with adequate service clearance. They’re the most useful part of the cut sheet for the field team trying to plan the install.
What Is a Submittal?
A submittal is a broader document — a package assembled for formal approval by the engineer or owner before equipment is ordered. The submittal contains the cut sheet plus everything else the engineer requires to give that approval.
The reason engineers require full submittals is that cut sheets alone don’t capture everything they need to verify. A few examples of what gets added in a full submittal:
- Buy America Act certifications — required on federal government jobs to prove equipment was assembled in America or that the components were manufactured and purchased in America
- Warranty information the engineer or owner needs to pass to the customer
- Installation manuals when the project specs require them as part of the submittal package
- Manufacturer specifications
- Certified drawings (often overlap with what’s in the cut sheet, but needs to be in the official package)
- A cover sheet identifying any additional options that come with the equipment
- A table of contents for larger packages
The engineer wants an all-encompassing document — everything covered, everything included — that can be used as a reference for the life of the project and after.
Who Reviews a Submittal
The routing depends on whether you’re the prime contractor or a sub:
- If you’re the GC or prime contractor, the submittal goes directly to the customer or engineer.
- If you’re a subcontractor, the submittal goes to the GC first. The GC logs it, then routes it to the construction manager if there is one, who routes it to the engineer or architect.
The reviewer depends on the trade of the equipment, not your trade:
- Mechanical engineer reviews HVAC and mechanical equipment
- Electrical engineer reviews electrical equipment — panels, switchgear, transformers, lighting controls, generators, and similar
- Architect reviews architectural items — carpentry, windows, paint colors, panels. For HVAC, the architect usually doesn’t weigh in unless it’s air devices (diffusers, grilles, registers) since those affect the visible appearance of the build.
Possible Review Outcomes
Once the engineer reviews the submittal, you’ll get one of four responses:
- Approved — clean approval, you can order
- Approved as Noted — approved, but with notes or comments that need to be addressed during construction or when ordering the equipment
- Revise and Resubmit — go fix the issues and send it back. Sometimes this is minor, sometimes it can trigger an RFI if the engineer’s response doesn’t make sense
- Rejected — you submitted something completely wrong; rejected entirely
If the engineer’s comments don’t make sense to you, you don’t have to blindly accept them. You can push back, raise your concerns, or submit an RFI. Their word isn’t law — they’re referring to engineering guidelines and codes, but they don’t always have it right.
Review Timing
Submittal review is typically 14 to 21 days. I’ve seen the process stretch into months on bad projects, which significantly delays the schedule. When that happens, you as the contractor can come back and request a time extension and, if there’s a cost escalation from the delay, charge that back to the customer. That cost sometimes flows to the engineer for sitting on the review too long. Document the timeline along the way — it’s what protects you.
Cut Sheet vs Submittal: Side-by-Side
| Cut Sheet | Submittal | |
|---|---|---|
| What it is | Manufacturer’s data sheet for a specific piece of equipment | A complete package sent for engineer/owner approval |
| What’s in it | Capacity, dimensions, electrical, performance specs, sometimes certified drawings | Cover sheet, cut sheets, certified drawings, warranty info, installation manuals, manufacturer specs, certifications (e.g. Buy America Act), table of contents |
| Purpose | Quick reference to verify equipment specs match the project needs | Formal approval document; reference for the life of the project |
| Who creates it | Equipment manufacturer (vendor often generates it from their selection software) | Contractor or subcontractor assembles the package |
| Who reviews it | Contractor, PM, superintendent, or foreman checking fit | Engineer for that specific trade (mechanical for HVAC, electrical for electrical, architect for architectural items), sometimes the customer |
| When it’s used | Any point in the project — pre-construction for equipment selection and takeoffs, during construction for layout planning | Pre-construction — formal approval before ordering equipment |
| Typical review time | None — internal use | 14-21 days standard, can stretch to months in bad cases |
When a Cut Sheet Alone Is Enough
There are real scenarios where you don’t need a full submittal — a cut sheet is sufficient. Here are the ones I run into:
Verifying against the equipment schedule. When I’m comparing equipment information to the values in a bid set or construction drawings, I just need the cut sheet. If everything matches, the cut sheet is what I’ll send to the engineer for the relevant portion of the eventual submittal.
Field crew internal planning. The install crew uses cut sheets to figure out power requirements, look at the installation manual when one’s included, and use the certified drawings to lay out where the equipment will be placed, where the pipe connections are made, and what the install will look like. This is internal planning, not approval.
HVAC surveying. This is my current work. I request cut sheets, not full submittals, because all I need is dimensions, capacity, and electrical to verify the new equipment matches the existing conditions. I’m not the one approving the equipment for purchase — I’m just confirming the selection fits the constraints.
When a Full Submittal Package Is Required
The general rule is that the project specs dictate what’s required, but the typical pattern is:
Design-bid-build projects follow the standard formal submittal process. The customer works with an engineer, the engineer issues an RFP, contractors bid, and once awarded, the contractor has to submit per the specs and get engineer approval before ordering.
Design-build projects depend on scale and customer. Larger design-build jobs still follow the formal process — full submittals, engineer review, approval. Smaller, lower-key direct customer jobs often don’t require formal submittals at all. Equipment is usually already figured out by the time the engineer is involved, and submittals on these smaller jobs are more for reference and document management after the job is complete.
The deciding factor is what the customer wants. Don’t assume design-build means no submittal — read the specs and confirm with the customer.
Who assembles the package varies. Sometimes the vendor puts together the full submittal. Sometimes the vendor only sends cut sheets and it’s on the contractor to assemble the rest. It’s not consistent. Work with what you’re given.
Common Mistakes I’ve Seen on Real Projects
This is where the difference between a cut sheet and a submittal stops being academic. Two real scenarios where confusion or sloppy document management cost real money:
The Outdated Document on Site
The field crew was working off an old cut sheet because the file system hadn’t been updated. They laid out the install based on those dimensions and started running pipe. Then the actual equipment arrived — and it didn’t match. We ended up in a real predicament. Rework, lost time, lost budget. Bad situation for the PM trying to maintain the budget.
The root cause was document management. Could’ve been the PO that didn’t get updated, could’ve been the project engineer that didn’t update the file in the project software. Doesn’t matter who — the takeaway is that document management is huge in this industry. If your team isn’t consistently working from the latest version of every document, mistakes like this happen.
The “Approved Means Correct” Trap
I had a situation where a submittal got sent out, the engineer approved it, and we used that approved submittal to order the equipment. Standard process. Except the submittal turned out to be wrong — the equipment didn’t match the current specs. Somewhere along the line the design had changed, and the submittal we were working from was based on the old specs.
Now we had two options: order the right equipment (delays and cost) or install the wrong one and hope for the best. Either way, money lost.
The lesson: don’t assume “approved” means correct. The engineer can miss things. The vendor can send the wrong document. Before you order equipment, verify the submittal matches the current drawings and specs. Especially if you know the design has changed at some point in the project.
Frequently Asked Questions
Is a cut sheet the same as a spec sheet?
Pretty similar. Both refer to data about the equipment being ordered. In practice, “cut sheet” is the more commonly used term in the industry. “Spec sheet” gets used too, but it’s not as standard. If you’re asking a vendor for information on a piece of equipment, “cut sheet” is the term that’ll be most universally understood.
Do all submittals include cut sheets?
No. Submittal is a very broad term. Submittals can be just shop drawings, welder certifications, calibration documents, and more. If you’re specifically talking about equipment submittals, then yes — those will include cut sheets. But there are many types of submittals that don’t.
Who is responsible for creating the cut sheet vs the submittal?
The vendor or subcontractor provides the cut sheet (or shop drawing, depending on the trade). The contractor takes that material and assembles it into the full submittal package. From there it goes to the GC if you’re a sub, or directly to the engineer if you’re a prime.
What happens if a submittal gets rejected?
Read the comments, try to address them. If something doesn’t make sense, don’t feel bad about questioning it. The engineer’s word isn’t law. They’re referring to engineering guidelines and codes, but they don’t always have it right. If your understanding of the spec or code differs from theirs, raise it. Sometimes you’ll need a meeting to come to an agreement. That’s normal.
How long does the submittal review process take?
Typically 14 to 21 days. Sometimes longer. If it goes longer than spec’d, that’s a schedule and cost impact that needs to be documented. Documentation is what lets you push back later — “the delay isn’t our fault, the submittal sat in review.”
Can I order equipment before the submittal is approved?
No. You should not order equipment before the submittal is approved. If you do, and it turns out to be wrong, that’s a major cost on the contractor — and you’ll have to eat it. Could possibly cost you your job. Wait for approval.
What’s a preliminary submittal?
A preliminary submittal is a rough, broad document that gives the reviewing contractor a general idea of what’s going to be ordered. It doesn’t contain a lot of specific information. It’s useful in the preplanning and design phase to get a rough sense of equipment selection before everything is finalized.
The Takeaway
If you’re newer to construction, the one thing to remember about cut sheets and submittals is this: always review and make sure the submittal matches what the drawings say — or that the cut sheet matches what the drawings say.
If you’re ordering new equipment or trying to match existing, find something to reference against. Make the comparison. Verify everything lines up. You don’t want to order something that doesn’t fit or doesn’t provide enough capacity, airflow, cooling, whatever the application needs. That’s the worst outcome you can have.
When you’re reviewing cut sheets, this verification is critical. It’s also the moment where the most expensive mistakes get made. If you slow down for nothing else in your day, slow down for this.
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