KONE NanoSpace vs. Traditional Elevators: What Eight Years of Mistakes Taught Me

Why I Started Comparing Elevator Options the Hard Way

I've been handling elevator and vertical transportation equipment orders for construction projects for eight years. I've personally made—and documented—17 significant mistakes in that time, totaling roughly $130K in wasted budget. The worst part? Most of them stemmed from one habit: comparing elevator quotes on base price alone, without understanding the space, the installation, or the door assemblies.

This article is the comparison framework my team now uses on every project where a KONE NanoSpace elevator is a serious option. If you're a developer, architect, contractor, or building owner trying to choose between a NanoSpace elevator and a traditional machine-room elevator, this is what I wish someone had handed me in 2017.

The Comparison Framework

We compare on four dimensions, and the order is deliberate:

1. Space and building layout impact
2. Installation time and construction disruption
3. Total installed cost—including door and entrance packages
4. Energy efficiency and lifecycle expense

We don't start with price. That was my first costly lesson. You can't judge whether an elevator quote is fair until you understand what the elevator demands from the building—and from the rest of your budget.

Dimension 1: Space & Building Layout

This is where the NanoSpace name should be taken literally. KONE's NanoSpace elevator is a machine-room-less (MRL) design recognized under ASME A17.1-2000 and subsequent code editions. The drive, controller, and hoisting machinery are compact enough to sit within the hoistway itself. There's no penthouse machine room eating vertical space at the top of the shaft.

A traditional elevator configuration, by contrast, requires a dedicated machine room above the hoistway—typically 8–10 feet of additional height—plus ventilation, lighting, and maintenance access. On new construction, that's extra structural cost on every column that carries the shaft. On a retrofit, it's often a non-starter because the space simply doesn't exist.

The Miller Street project (mid-2022) illustrates this. The owner wanted rooftop space for future HVAC units. Our initial traditional elevator spec required a penthouse machine room occupying exactly the zone the HVAC needed. The NanoSpace option eliminated the machine room entirely and preserved the roof plan.

Verdict: NanoSpace wins this dimension when vertical space is constrained—and in urban construction, it almost always is.

Dimension 2: Installation & Construction Disruption

On the construction side, KONE's NanoSpace installation process differs meaningfully from a traditional elevator installation. The components are modular, the hoisting machine is installed within the shaft, and the guide rails can be positioned without a crane on most mid-rise sites. In practice, on three recent projects (Q3 2023 through Q2 2024), our team saw KONE's crews reach power-on in 2.5–3.5 weeks for 2–3 stop NanoSpace units. Comparable traditional machine-room elevators took 6–9 weeks.

To be fair, the traditional elevator subcontractors on those projects were working with older designs, and part of the schedule delta is simply modernization, not just the absence of a machine room. But the delta is real, and on a construction schedule, every week saved is financing cost avoided, delay penalties avoided, and tenant occupancy pulled forward.

Verdict: NanoSpace delivers a substantially shorter installation window on comparable projects.

Dimension 3: Cost—and the Door Assemblies Trap

Alright, let's talk dollars. Based on public pricing data and our own bid summaries as of January 2025:

• A KONE NanoSpace elevator package (2–3 stops, 3,500–4,500 lb capacity, standard finishes) typically lands between $120K–$180K installed.
• A traditional machine-room elevator of similar capacity spans roughly $100K–$160K—but that number almost never includes the machine room structure, hoist beams, ventilation, and shaft prep costs.

When you add structural work, the traditional option usually lands at or above the NanoSpace price. On two of our four bid comparisons last year, the "cheaper" traditional elevator became the more expensive total investment once the machine room was fully accounted for.

And please, learn this from my mistakes: elevator door assemblies are a budget line item that estimators constantly under-scope. Hoistway doors, car doors, entrance frames, and door operator mechanisms each carry significant cost. We've seen door package pricing vary from $12K to $34K on the same project depending on the supplier and specifications.

This is where the broader door budget enters the picture. Clients ask me all the time, how much does a door cost?—usually because they're comparing a standard steel door against a design-conscious black front door or a high-performance entrance system. A commercial-grade entrance door with proper weather stripping, hardware, and installation typically runs $1,800–$3,500, and the hidden truth is that the weather stripping—the rubber seal that keeps air, water, and sound out—is a consumable. It has a lifespan, it fails, and replacement costs money. On the residential side, you can pay $400 for a cheap entry door and watch the seal curl within a year, or you can budget $2,000+ for something that performs for a decade.

My own $8,700 project mistake (documented, naturally): I compared elevator base prices across four suppliers, ignored the door assemblies in the value comparison, and awarded the traditional elevator package that came with expensive sliding door hardware on each floor. Meanwhile, the budget for a simple exterior black front door replacement—with weather stripping—had been cut to the bone. We compromised on a cheap door seal. It failed within 14 months. Fixing it cost $2,100 and a chunk of professional credibility with the building owner.

Verdict: Never compare elevator quotes without comparing the door assemblies. And never treat entrance doors—and their weather stripping—as afterthoughts.

Dimension 4: Energy Efficiency & Lifecycle Costs

KONE NanoSpace elevators are available with regenerative drive technology. In simple terms, a loaded descending car becomes a small generator that returns electricity to the building's grid. On a busy elevator in a 5–7 story building, published manufacturer data (including KONE's own product documentation, accessed January 2025) points to a 20–30% energy reduction compared to a non-regenerative system. We also verified this independently on a project completed in Q1 2024: the owner's utility data showed the new NanoSpace unit drawing about 18% less power than the older hydraulic elevator it replaced.

Traditional modern elevators—including KONE's own conventional offerings—meet current energy expectations reasonably well. The gap is not enormous on new equipment. But over a 15–20 year lifecycle, the combined energy savings, reduced maintenance demands (fewer moving parts in a machine-room-less design), and the additional usable floor area from eliminating the machine room justify a meaningful portion of the upfront premium.

Verdict: NanoSpace carries a measurable energy and lifecycle advantage, with the caveat that it's most pronounced in retrofit and continuous-usage scenarios.

The Surprise That Changed My Mind

I mentioned the Miller Street project. Here's the part I didn't expect: the numbers said go with the traditional package—the base quote was 12% lower and the specs technically worked. My gut said something was off. I couldn't quite articulate it, but the coordination between the shaft dimensions, the roof HVAC space, and the architectural entrance design felt fragile. We had 11 days before the equipment bid lock, and I almost submitted the traditional vendor's number just to be safe.

When we ran the full cost model, the traditional option's machine room required a roof redesign: $14K in structural engineering and $22K in additional steel, plus a two-month schedule delay. The "cheaper" elevator became the $36K more expensive decision, before a single elevator component was delivered.

And the surprise didn't stop there. The NanoSpace shaft configuration we ultimately chose allowed wider elevator door openings that aligned perfectly with the architect's entrance vision—a black front door with upgraded weather stripping. Had we committed to the traditional elevator, that door would have required a custom width at a 40% premium. The elevator decision reached all the way down the building to the front entrance. I've stopped treating elevator selection and entrance door decisions as separate budgets.

What I Recommend Now

Here's the practical guidance we give our clients, based on this comparison framework:

Choose the KONE NanoSpace elevator when:

• The building is a retrofit and shaft or roof space is constrained.
• The schedule is tight enough that a 3–4 week installation window materially improves the project economics.
• Energy efficiency or building certifications (LEED, WELL) matter to the owner's leasing or ESG strategy.
• Your team is ready to do a full-assembly cost comparison—including shaft prep, machine room, and door packages—rather than a base quote comparison.

Choose a traditional machine-room elevator when:

• You're building new on greenfield land where vertical space carries no premium, and your construction team has deep experience with conventional installations.
• You're replacing a failed elevator in an existing machine room with minimal scope change.
• Regulatory or heritage constraints limit hoistway modifications (some older buildings have shaft dimensions that an MRL system can't accommodate without significant civil work).
• You have the time and budget to absorb the machine room costs—and you've verified that the traditional base-price advantage survives a full cost model.

Eight years and $130K in documented mistakes have taught me that the comparison is never just the elevator. It's the construction schedule, the machine room, the door assemblies, and the weather stripping you didn't think about. An informed customer asks better questions and makes faster decisions—and this framework is how I help my clients ask the right ones before they sign anything.