The Herman Miller Aeron is an icon of office seating, but the original classic (MK1) and remastered version (MK2) have key differences in adjustability, sizing, and price. The Aeron MK1, launched in 1994, is a vintage favorite found on the used market, while the currently produced Aeron MK2 offers advanced ergonomic features, improved materials, and multiple sizing options for a more tailored fit.
Here's a complete comparison to help you decide which Aeron chair is the right investment for your workspace.
Herman Miller Aeron MK1 (The Classic)
The original Herman Miller Aeron, now often referred to as the MK1 or "Classic," debuted in 1994 and changed the office furniture industry forever. It was one of the first chairs to feature a mesh-like "Pellicle" suspension system instead of traditional foam cushions. Now discontinued, it remains highly sought after on the secondary market for its proven durability and iconic design at a much lower price point.
- What it is: The original generation of the Aeron ergonomic chair, produced from 1994 to 2016.
- Key features: High-quality recycled aluminum frame, original Pellicle mesh for breathability, standard tilt and height adjustments, and a classic waterfall seat edge.
- Price: $300 to $700 on the used or refurbished market, depending on condition and features.
- Style: A signature 1990s ergonomic design that has become a timeless classic. It has a slightly more mechanical look compared to the sleeker MK2.
- Materials/Construction: Built with a durable aluminum frame and the pioneering Pellicle mesh. It was an early example of sustainable design, using a significant amount of recycled material.
- Pros: Significantly more affordable than buying new. Proven durability with many 20+ year old chairs still in use. An iconic, vintage design piece. Strong resale value on the used market.
- Cons: Limited ergonomic adjustments compared to the new version. Primarily available in one standard size ("B"). Lacks advanced spinal support like the modern PostureFit SL. Buying used means "as-is" condition with no warranty.
The Aeron MK1 is perfect for someone on a budget who still wants a premium ergonomic chair and appreciates a classic, vintage aesthetic.
Shop this product: Available on secondary markets and from certified refurbishment dealers.
Herman Miller Aeron MK2 (The Remastered Version)
Launched in 2016, the Aeron MK2, or "Remastered" Aeron, appears similar but is a complete redesign from the ground up. Herman Miller updated the chair with smarter materials, better zoned support in the mesh, enhanced adjustment capabilities, and a more streamlined look. It's the current version available directly from the brand and its authorized dealers.
- What it is: The modern, second-generation Aeron chair, re-engineered for today's work needs.
- Key features: 8Z Pellicle mesh with eight distinct tension zones for targeted support, advanced PostureFit SL support for the sacrum and lumbar region, a refined tilt mechanism, and a wider range of modern finishes.
- Price: Approximately $1,200 to $1,500 direct from Herman Miller or authorized retailers.
- Dimensions: Available in three sizes (A, B, and C) to provide a more precise fit for a wider range of body types.
- Materials/Construction: Uses upgraded Pellicle mesh for improved airflow and durability, along with a refined aluminum frame. Emphasizes modern sustainability with more eco-friendly materials and GREENGUARD Gold certification.
- Style: A sleek, contemporary update to the classic silhouette. The streamlined mechanics and new color options like Mineral, Carbon, and Graphite help it blend seamlessly into modern workspaces.
- Pros: Superior targeted ergonomic support. Multiple sizes ensure a tailored custom fit. Full 12-year manufacturer's warranty. More advanced and intuitive adjustments. Improved aesthetic with more finish options.
- Cons: High price point makes it a significant investment. Some users may not need the advanced level of adjustability.
The Aeron MK2 is an excellent choice for professionals who spend long hours at a desk and prioritize cutting-edge ergonomic support, a tailored fit, and a full warranty.
Shop this product: store.hermanmiller.com/office-chairs-aeron-chair/100098634.html
Herman Miller Aeron MK1 vs. MK2 Comparison
Dimensions & Sizing Options
The biggest functional difference between the two chairs is sizing. The original Aeron MK1 was mostly produced in the "B" size, which fits the majority of the population. While other sizes existed, they are much harder to find on the used market.
The Aeron Remastered (MK2) corrected this one-size-fits-most approach by offering three distinct sizes: Size A (small), Size B (medium), and Size C (large). This ensures that petite, average, and larger users can all find a chair dimensioned specifically for their body, providing much better ergonomic support for a wider variety of people.
Comfort & Ergonomics
While the MK1 was revolutionary, the MK2 significantly improves upon its comfort. The original Pellicle mesh offers uniform support, but the MK2’s 8Z Pellicle mesh features eight different zones of tension. This provides softer support where your body needs it (like under the sit bones) and firmer support elsewhere to promote healthy posture.
Spinal support also received a major upgrade. The MK1 typically comes with a basic lumbar support pad. In contrast, the MK2 features the optional PostureFit SL system, which has two individually adjustable pads - one for the sacrum and a second for the lumbar region. This provides more robust and stabilized support for the base of your spine.
Materials & Construction
Both chairs are built to last with high-quality recycled aluminum frames and durable pellicle suspension. However, the MK2 represents two decades of material science advancement. The components are more refined, the tilt mechanism is smoother and operates more intuitively, and the armrest adjustment controls are easier to use.
The MK2 also reflects Herman Miller's continued commitment to sustainability, using improved eco-friendly materials and manufacturing processes that are GREENGUARD Gold certified for low chemical emissions.
Price & Availability
This is where the MK1 has a clear advantage. As a discontinued model only available on the used market, a classic Aeron can often be found for under $500, making it an incredible value. The trade-off is that you're buying "as is," without a warranty, and condition can vary widely.
The Aeron MK2 is a premium product with a price to match, typically retailing for over $1,200. However, that price includes a brand-new chair precisely configured to your preferences, shipped from an authorized dealer, and backed by Herman Miller's comprehensive 12-year warranty.
Style & Aesthetics
Both models share the same iconic silhouette, but the MK2 feels more modern and streamlined. The frame finishes are updated, with options like Mineral (a light white-gray) that better suit contemporary home office styles. The under-seat mechanics of the MK2 are also more cleanly integrated into the design, giving it a less bulky and more sophisticated appearance.
The MK1 has a distinct retro-tech feel that many vintage enthusiasts love. Its slightly more raw, mechanical look is a hallmark of '90s design that has come back into style.
Which One Should You Choose?
Both Aeron models offer excellent ergonomic support, but they cater to different budgets and priorities.
Choose the Aeron MK1 (The Classic) if:
- You want a premium ergonomic chair for a budget-friendly price (under $700).
- You appreciate vintage 90s design and furniture with a history.
- You're comfortable buying from a second-hand marketplace or refurbishment dealer.
- You're of average height and build and don't require specialized sizing.
Choose the Aeron MK2 (The Remastered Version) if:
- You're willing to invest in the latest ergonomic technology for maximum comfort and spinal health.
- You need a specific size (A for smaller bodies, C for larger bodies) to ensure a proper fit.
- You want the peace of mind that comes with a new product and a 12-year warranty.
- A clean, modern aesthetic with updated color options is a top priority for your space.
Frequently Asked Questions
What’s the main difference between the Aeron MK1 and MK2?
The main differences are in ergonomics, sizing, and price. The MK2 has superior, zoned mesh support (8Z Pellicle), more advanced spinal care (PostureFit SL), comes in three distinct sizes (A, B, C) for a tailored fit, and is sold new with a warranty. The MK1 is more affordable but has less advanced features and is only available on the used market.
How can you tell if an Aeron chair is an MK1 or MK2?
The easiest way to tell is by looking at the tilt adjustment mechanism. The MK1 has a knob you turn, while the Aeron MK2 uses a single lever. The back support is also a clear indicator: the MK1 usually has a simple horizontal lumbar pad, whereas the MK2 flagship model has the distinct butterfly-shaped PostureFit SL pads.
Can you still buy the Aeron MK1 new?
No, the classic Aeron MK1 was discontinued in 2016 and replaced by the remastered MK2 version. It is only available through second-hand channels like refurbished dealers or private sellers.
How do I know which size Aeron MK2 I need?
Herman Miller provides a sizing chart based on height and weight. Generally, Size A is for smaller, more petite users. Size B is the most popular size and fits the vast majority of people. Size C is designed for taller and heavier individuals who need a deeper seat and a higher backrest.
Is the remastered Aeron MK2 worth the extra money?
For most people who spend hours at their desk every day, yes. The improved, tailored fit from the different size options and the advanced spinal support from the PostureFit SL system make a noticeable difference in long-term comfort and health. The 12-year warranty also adds significant value and peace of mind to the investment.
Are refurbished Aeron chairs a good deal?
A "refurbished" chair from a reputable dealer can be an excellent deal. These chairs are professionally cleaned, inspected, and have worn-out parts like casters, arm pads, and gas cylinders replaced. They often come with a limited third-party warranty, offering a good middle ground between buying used and buying new.
What is PostureFit SL?
Available on the newer Aeron MK2, PostureFit SL is an advanced spinal support system. It features two individually adjustable pads - one supports your sacrum (the base of your spine) and the other your lumbar region. This encourages your spine to maintain its natural S-shape for a healthier seated posture.
Do Aeron chairs hold their value?
Yes, exceptionally well. Thanks to their durable construction and iconic status, Aeron chairs - both MK1 and MK2 models - have one of the strongest resale values of any office chair on the market.
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