Our flagship straight lift. Patented grease-free helical worm drive. Folds to 10.5" — the narrowest in the industry. 350 lb capacity.
The Nautilus Premium is built around a patented helical worm gear drive — a screw-like steel rod that turns a reinforced nylon polymer gear rack. It's the drive system we chose because it has the fewest wear points, requires no grease, and runs more quietly than traditional alternatives.
Soft start/stop with no metallic engagement noise.
No grease points, no scheduled lubrication, nothing for dust or pet hair to collect on.
The nylon-on-steel interface runs notably quieter than steel-on-steel drives.
Fewer moving parts and no exposed wear surfaces over the 20+ year life of the lift.
| Weight capacity | 350 lbs (159 kg) |
|---|---|
| Drive system | Patented helical worm gear with reinforced nylon polymer gear rack |
| Seat dimensions | 19" W × 16" D × 18" H |
| Folded width | 10.5" (13.6" with optional folding rail) |
| Track length | 15'6" standard; expandable up to 70' |
| Travel speed | 20 feet per minute |
| Incline range | Up to 45° |
| Power | 120–240 VAC standard outlet; 24V DC battery operation |
| Battery backup | Up to 60 round trips during a power outage |
| Charging | Charge contacts at upper & lower landings (within 3' of each end) |
| Swivel seat | Manual swivel at upper landing (power swivel optional) |
| Seat belt | Standard retractable |
| Controls | Armrest toggle plus two wireless remote controls |
| Safety systems | Final limit switch, chassis obstruction sensors, centrifugal overspeed brake, swivel seat cut-off, bi-directional footrest sensor, audible alert |
| Certification | ETL certified to ASME A18.1-2020 |
| Manufactured in | United States (Sarasota, FL) |
The lift itself — chair, carriage, motor, drive system
Custom-cut rail (15'6" standard length)
Two wireless remote controls
Standard retractable seat belt
Battery backup system, pre-installed
Professional installation by factory-trained technician
On-site operation training
Lifetime warranty activation
to clear doorways or walkways at the bottom of stairs
disables operation when removed (child safety)
motorized 90° swivel at top landing
motorized fold/unfold
folds automatically with seat
beyond the 15'6" standard, up to 70' maximum
Add-ons are quoted during your free in-home assessment.
We measure your staircase and give you a real quote on the spot.
30 minYour custom-length rail is manufactured at the factory.
2–3 daysFactory-trained technician installs and calibrates the lift.
4–6 hrsOperation and safety training for you and your household.
Same dayYour 24/7 line and warranty are active from day one.
Day oneA quick look at how our four lifts compare.
| Lift | Staircase | Capacity | Drive system | Special feature | Made in | Best for |
|---|---|---|---|---|---|---|
| Nautilus Premium Stair Lift | Straight | 350 lbs | Grease-free worm | Narrowest fold (10.5") | USA | Standard straight stairs |
| Nautilus Heavy Duty Stair Lift | Straight | 600 lbs | Grease-free worm | 600 lb capacity | USA | Heavier users, straight stairs |
| Flow X Curved Stair Lift | Curved | 275 lbs | Rack & pinion | ASL auto-swivel | International | Narrow, spiral, or steep curved staircases |
| Harmar CSL500 Helix Curved | Curved | 350 lbs | Rack & pinion | True-Curve rail | USA (Sarasota, FL) | Curved staircases, US-made preference |
The Premium is our flagship straight lift, rated for 350 lb and folded to just 10.5″ — the narrowest profile in the industry. The Heavy Duty is engineered for higher weight (600 lb capacity, industry-leading) with a wider chair, stationary armrests for stability, and a reinforced footrest. Both use the same patented grease-free worm drive. If you need higher weight capacity or a wider seat, choose the Heavy Duty. Otherwise, the Premium is the right fit for most homes.
Correct. The patented helical worm gear system uses a nylon polymer gear rack that requires no lubrication. There’s nothing to grease, no scheduled maintenance, and no exposed wear surfaces for dust or pet hair to collect on. That’s a primary reason we can offer a true lifetime warranty on the parts.
The standard rail is 15’6″, and it can be expanded up to 70 feet in a single straight run. That covers essentially every residential staircase, including tall stairwells in multi-story homes. Custom rails are cut to your exact staircase length during the manufacturing step.
The lift runs on battery power at all times, with the standard outlet just providing the charge. A fully charged battery gives you up to 60 round trips — enough for days of normal use during even extended outages.
Traditional Medicare (Part A/B) does not cover stair lifts. Some Medicare Advantage plans, long-term care insurance policies, VA benefits, and state Medicaid waivers may contribute toward the cost. We can walk through your options during your free assessment.
Our lifetime warranty is tied to the original purchaser at the original installation address, which is the industry standard. If you’re moving, we can reinstall your lift at your new home using an authorized Nautilus technician. Any modifications required for the new staircase are quoted separately.
Typically under a week. Assessment takes about 30 minutes on-site, your custom rail is cut in 2–3 business days at the factory, and installation is a 4–6 hour appointment. Most customers are riding within 5–7 days of their first call.
In their own words
Two customers on what changed the day their lift went in.
"It's very easy to use."
— Nautilus customer
"It's great. [Installation] was very quick!"
— Nautilus customer
A 30-minute visit gets you a measured stairway, a fixed price, and no obligation.
Call (801) 421-3299Restoring freedom, one stair at a time.