Answers about our lifts, installation, warranty coverage, and what insurance does and does not pay for. Still stuck? A free in-home assessment answers the rest.
Yes. The Flow X is custom-manufactured to match your exact staircase, whether it has 90° turns, 180° turns, spiral configurations, or multiple stories. The rail can be built up to 112′ with multi-parking stations, and the incline capability of up to 72° means it handles even very steep staircases.
ASL stands for Advanced Swivel & Levelling. It’s a patented Access BDD technology that lets the seat rotate while the lift is in motion — both going up and going down. This is what allows the Flow X to fit staircases as narrow as 24″ (610mm), because the seat can turn to navigate tight bends. No other stair lift on the market has this capability.
After the on-site assessment, your rail is engineered and manufactured to match your staircase by Access BDD, the TK Elevator division behind the Flow X. Typical turnaround from approved quote to installation is 4–6 weeks. Installation itself takes about 3 hours.
Yes. The Flow X comes with 4 standard rail colors (Stone Grey, White, Pale Brown, Dark Brown) and 13 upholstery colors, plus vinyl and leather options. You can also choose an optional Grey Oak wood-finish back for a more furniture-like appearance. Customization choices are made during your assessment.
The Flow X runs on 24V battery power at all times, with the standard outlet just providing the charge. A fully charged battery gives you multiple round trips during a power outage. The lift also includes a standard emergency lowering function.
Our lifetime warranty is tied to the original purchaser at the original installation address, which is the industry standard. Because the Flow X is custom-built to a specific staircase, relocating it typically requires either significant rail modifications or a new custom rail — we can quote those options separately.
Choose the Heavy Duty if the primary user weighs more than 350 lb, if you want a wider seat and more back support for daily long-term use, or if you’re considering the lift for multiple users of different sizes. The Heavy Duty also has stationary armrests (vs the Premium’s flip-up), which provide more stability during transfers for users with limited mobility.
The Heavy Duty runs at 14 feet per minute vs the Premium’s 20 FPM. This is a deliberate engineering trade-off — the slower speed allows the motor to safely handle up to 600 lb of load. You’re trading a few seconds per trip for the industry’s highest weight capacity.
The Heavy Duty’s seat pivots 85° while simultaneously sliding out from the wall at the landings. This does two things: it allows the lift to install closer to the wall (freeing up staircase width), and it makes dismounting easier because the seat comes toward you rather than requiring you to step forward. The Premium doesn’t have this feature.
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.
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.
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.
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.
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.
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.
Yes — the modular rail system is custom-built to fit your exact staircase, including 90° turns, 180° turns, spiral configurations, intermediate landings, and multi-story applications. The rail can be built up to 164 feet in total length.
True-Curve is Harmar’s proprietary rail-bending technology that produces precision curves matching your staircase’s exact geometry. Combined with the rack-and-pinion drive, it delivers smoother turns and a more compact profile that mounts closer to the wall than most curved stair lifts.
Harmar has among the fastest turnaround times in the industry for custom curved lifts. From your approved quote to installation is typically 2–3 weeks — significantly faster than Europe-manufactured curved lifts, which can take 4–6 weeks. Installation itself is usually completed in less than a day.
Yes. Harmar makes an outdoor variant of the CSL500 Helix with weather-resistant materials and protective coatings, designed for exterior staircases like porches, decks, or building entries. Ask about the outdoor version during your assessment.
The lift runs on 24V battery power at all times, with the standard 120VAC outlet just providing the charge. A fully charged battery gives you approximately 10 round trips during an outage.
Our lifetime warranty is tied to the original purchaser at the original installation address, which is the industry standard. Because the Helix is custom-built to a specific staircase, relocating it typically requires either significant rail modifications or a new custom rail — we can quote those options separately.