You tell us what is difficult
Not what product you think you need. The stairs, the front step, the bath, getting into the car. Working out the product is our job.
A call, not a sales pitch
Harmar · Heavy duty straight stairlift
Harmar Pinnacle SL600HD
For when capacity is the whole question.
Priced for your home, installation included
The heavy-duty Pinnacle. Where a standard stairlift is not rated for the person who needs it, this is the straight-rail answer, and specifying it correctly matters more here than on any other model we sell.
- 600 lb weight capacity
- Seat swivels 85° at the top
- Up to 40' of travel
- Rated commercial and residential
Questions? Call (844) 799-0070
Price This Harmar Pinnacle SL600HD For Your Home
Answer a few questions and see the price of the Harmar Pinnacle SL600HD, installation included. If an answer rules it out, we tell you which one and price the model we would recommend instead.
Will It Fit Your Stairs?
The Harmar Pinnacle SL600HD is a straight stairlift. Find the shape that looks like your staircase.
This model
A straight staircase with no turn or landing.
Needs a curved rail
For any staircase with a turn, a landing, or a spiral. The rail is manufactured to measurements taken from your actual stairs.
Not sure which you have? The quote builder asks about your stairs
Harmar · Heavy duty straight stairlift
Who The Harmar Pinnacle SL600HD Suits
We would rather tell you this is the wrong model than sell you one that does not fit the staircase or the person. If any of the below does not describe your situation, say so on the first call and we will point you at the right thing.
We are an authorized dealer, which means we sell it, install it, and service it afterward. Nothing here is drop-shipped to your door with an instruction sheet.
- Users above the rating of a standard stairlift
- Bariatric specification on a straight flight
- Anybody who has been told a stairlift will not carry them
What Matters About This One
The things that actually decide whether it is the right choice.
01
Specified to the person
We ask for actual weight rather than an estimate, because a lift used above its rating is a safety problem rather than a warranty one.
02
Wider seat option
Seat and arm configuration is part of the specification, not an afterthought.
03
Straight rail, tread-mounted
Fixed to the treads and removable.
04
Two to four hours
A single visit once the correct unit is on the van.
Specifications
- Weight capacity
- 600 lb
- Seat
- 18 3/4" W x 14" D
- Back
- 16 1/2" W x 17 1/2" H
- Speed
- 14 FPM
- Folded width
- 16 1/2" from wall
- Track length
- 15'6" to 40'
- Incline limits
- 27° – 48°
- Inclines above 45°
- may need local approval
- Outdoor use
- no
- Drive
- nylon polymer gear rack, worm gear
- Rating
- commercial and residential
Warranty
- Parts: 3 years from retail purchase (labor, paint and covers excluded)
- Gear rack: 10 years
- Battery: 1 year
- Register within 10 days of installation
- Dealer labor, service and travel charges are not covered
Specifications and warranty terms are from the maker: harmar.com, cdn.harmar.com. Checked October 13, 2026.
Stairlifts We Have Installed
Photos from our own jobs. Not every photo shows this model.
How The Work Happens
Five steps. You can stop at any of them, and nothing is charged until you have said yes to a written scope.
-
1 -
2 We come out and measure
On site, at your address, free. We check the space, the power, and the structure, and we talk through how the room actually gets used.
Free, and no obligation -
3 You get it in writing
An itemized scope and a price, with the lead time stated honestly. The price you agree to is the price of the job. Take as long as you like with it.
The price does not move -
4 Our technicians install it
Our own people, not a subcontractor, who stay until everyone who has to operate it can operate it confidently.
Our own crews -
5 We service it afterward
The company that installed it is the company that maintains it. You are not handed to somebody else once the invoice clears.
Same company, years later
What People Ask About This Model
Turn a card over.
Compare It Against The Others
Every model we sell in this category, and the page that explains how to choose between them.
Bruno Elan SRE-5000
Straight stairlift
Bruno Elite SRE-2010
Straight stairlift
Bruno Elite Curve CRE-2110
Curved stairlift
Harmar Pinnacle SL300
Straight stairlift
Harmar Pinnacle SL600
Straight stairlift
Harmar Pinnacle SL600HD
Heavy duty straight stairlift
Harmar Helix CSL500
Curved stairlift
The Credentials Behind The Work
Anybody can sell equipment. Installing it legally, configuring it clinically, and servicing it afterward takes credentials that have to be earned and kept current. Here is what our team holds.
Elevator Mechanic
State Elevator Mechanic Licenses
Licensed elevator mechanics, state by state. Residential elevators and platform lifts are regulated work in most jurisdictions, and this is the license that makes it legal to do.
ATP
ATP, Assistive Technology Professional
RESNA-recognized credential for evaluating a person's needs and specifying the assistive technology that fits. This is who you want configuring a power chair or a seating system.
CRTS
CRTS, Complex Rehab Technology Supplier
The credential for supplying individually configured complex rehab. It is what separates a supplier who works alongside your clinical team from one who ships a box.
CAPS
CAPS, Certified Aging-in-Place Specialist
Training in modifying a home so someone can stay in it. It is the difference between installing equipment and understanding the house it goes into.
MSE
Mobility Service Excellence
Industry service certification covering installation, maintenance, and repair standards across mobility equipment.
EPA 609
EPA Section 609
Federal certification for handling refrigerant in vehicle air conditioning. It is required to legally service a bus AC system, and it is why fleet work is something we can actually take on.
What Our Customers Say
Google reviews of our company and our technicians, not of this one product.
★★★★★
4.6 rating of 101 Google reviews
Mason is a wonderful service technician! We live in “rural country” of NE Georgia and he drove all this way to get my Dad’s chair lift up and running. Thank you, Mason AND Custom Mobility!
As a fellow business owner, I have seen this company do all of their work with as much professionalism and tact as any that I have ever encountered. I thoroughly enjoy actually witnessing people who care about their work and show it through their actions, and the owner at Customer Mobility is the ep…
My Service Technician is truly the best! He responded within a day and he fixed the chairlift in less than an hour! It’s reassuring to know that we can depend upon Custom Mobility!
Ask Us About The Harmar Pinnacle SL600HD
Tell us about your staircase or your entrance and we will come out and measure. All consultations, estimates, and scopes of work are provided completely free of charge. No pressure or obligation.