Some homes require a heavy duty stairlift on narrow stairs. You’ll need a heavy duty stairlift if you’re over the weight capacity of a particular model of stairlift. That capacity varies from between 19 and 25 stone, depending on the model of stairlift. For a very narrow staircase, we often recommend the Flow X stairlift, which has a weight capacity of 19 stone.
If you’re over this weight limit, you’ll need a heavier duty stairlift such as the Stannah 600 straight stairlift (25 stone limit) or the Platinum Ultimate (25 stone) or the Bruno (30 stone) stairlift.
As the weight capacity of a stairlift increases, its ability to be installed on a difficult/awkward staircase is more limited. The Bruno, for example has the heaviest limit of 30 stone. But this is a much more sturdy rail system and the chair is much larger too.
Here’s a picture of the Bruno 30 stone stairlift. Because of this, a heavy duty stairlift is often less suitable for very narrow staircase.
Can A Heavy Duty Stairlift Fit On Narrow Stairs?
The Platinum Ultimate is often the answer when you need a heavy duty stairlift and you have a narrow staircase. With a straight staircase, the Stannah 600 is often the best answer. This stairlift has a capacity of 25 stone. However, that’s no good if your staircase is curved. In this situation we recommend the Platinum.
Here’s a Platinum Ultimate stairlift on a curved staircase. It has a single rail and can face downstairs/upstairs which gives you more legroom on a narrow staircase. Weight capacity of the Platinum is 25 stone.
Although the Ultimate isn’t as agile as the Flow X stairlift for narrow stairs, it’s a great option if you need a heavy duty option and you’re over the 19 stone limit of the Flow.
Heavy Duty Stairlifts & Narrow Fittings
Here’s a comparison table showing the various types of stairlifts available for heavier users compared with other options.
| Feature | Stannah 600 | Flow X | Platinum Ultimate | Bruno Elite HD |
| Best For | Straight staircases | Narrow, awkward or difficult staircases | Narrow staircases & heavier users | Very heavy users |
| Stair Type | Straight | Straight & Curved | Straight & Curved | Straight & Curved |
| Maximum User Weight | 25 stone (160kg) | 19 stone (125kg) | 25 stone (160kg) | 30 stone (190kg) |
| Ideal for Narrow Stairs? | ⭐⭐⭐☆☆ | ⭐⭐⭐⭐⭐ | ⭐⭐⭐⭐⭐ | ⭐⭐☆☆☆ |
| Heavy Duty Option? | ✅ Yes | ❌ No | ✅ Yes | ✅ Excellent |
| Ride Quality | Smooth & reliable | Excellent around tight bends | Smooth & comfortable | Very robust |
| Our Verdict | The best all-round straight stairlift for reliability and value. | Our first choice for awkward, steep or narrow staircases where other stairlifts won’t fit. | An excellent option for customers needing a higher weight limit on narrow stairs. | The best choice for customers up to 30 stone where staircase width isn’t restricted. |
What’s right for You?
- Choose the Stannah 600 if you have a straight staircase and need a reliable heavy-duty stairlift with a 25 stone weight limit.
- Choose the Flow X if your staircase is narrow, steep or has awkward bends. Although its weight limit is 19 stone, its rotating seat makes it one of the best stairlifts for difficult staircases.
- Choose the Platinum Ultimate if you need both a 25 stone capacity and a stairlift capable of fitting many narrow or curved staircases.
- Choose the Bruno Elite HD if maximum carrying capacity is your priority. With a 30 stone (190kg) limit, it’s our preferred solution for heavier users, although it generally requires a wider staircase than the Flow X or Platinum Ultimate.
Summary
Book a free survey and get our recommendations for what you need on your staircase. Call us on 0800 046 3438 – we offer free surveys UK wide.
Whether you need a heavy duty stairlift or one for narrow stairs, we will help you find the perfect stairlift for your home!
You can also visit our YouTube channel and see some of our installations.