X Chair vs Herman Miller Aeron: Which is Better?

X Chair and Herman Miller are two major office chairs brand. Both brands make high-quality office chairs with premium features that you may not see in normal office chairs.

Both brands are also known for their expensive office chairs. Often a debate gets started that which is the best X Chair vs Herman Miller?

If you are also getting confused with one you should buy X Chair or Herman Miller then you will find this blog very useful.

As we are going to compare these two brands in this X Chair vs Herman Miller Blog. So to know all this Read this Blog from start to end.

Herman miller Aeron vs X4 chair– Quick Comparison

AeronX4 chair

56% elastomeric, 44% polyesterHard Plastic and Aluminium
Size:Comes in Multiple sizes (Size A, B & C)1 Size
Lumbar SupportFixed, Adjustable UP-DOWN and Adjustable PostureFit SLDynamic And can move Forward and Backward
Adjustable Armrest4D Adjustable Padded Arms4D Adjustable Padded Arms
Adjustable Seat Depth
Height of the SeatSize A: 15″ – 19″
Size B: 16″ – 20.5″
Size C: 16″ – 20.5″
18.5″ – 23.″
HeadrestNot But can be add-on Yes, included
Maximum Weight CapacitySize A: 300 lbs
Size B & C: 350 lbs
240 lbs
CastersCarpet and Multi Surface CastersClear Blade Wheels, Black Blade Wheels and Clear Locking Wheels
Warranty12 Years15 Years With Conditions
Check on AmazonCheck on Amazon

Comparison between X Chair and Herman Miller

As It is impossible to compare all X Chair and Herman Miller chairs, we will do a Comparison between the X4 Chair and Herman Miller Aeron which are the 2 best chairs of both brands. In this Comparison, we will cover-

  • Material and Build Quality
  • Armrests
  • Lumbar Support
  • Backrest Recline
  • Customizability
  • Adjustable Headrest
  • Comfortability
  • Size and Weight
  • Pricing
  • Assembly and warranty etc.

Material and Build Quality

Herman Miller is known for using high-quality material in their chairs that is why their chairs also last for more than any other office chair.

Aeron seat and backrest are made up of 8Z Pellicle elastomeric suspension which you can also say mesh. But the seats of X4 chairs are made up of Premium Leather and you can also choose other upholstery in this chair.

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Both chairs’ upholstery looks of premium quality, but the mesh is more soft and comfortable than the leather and is more premium.

Aeron chair base and frame are made up of powder-coated die-cast aluminum frame and base. The material used in both chairs frame and base feels premium and dont get broke.

The armrests of Aeron and X4 Chair Are made up of hard plastic but the Aeron plant is more solid and strong, all become of high-quality plastic.

It dont means that x4 has low build quality but there is little difference in the quality for sure. So overall in terms of material and build quality, Aeron has the upper hand.


Both X4 Chairs and Aeron have high adjustable 4D armrests. Aeron chair armrests can adjust the height of 6.8 inches Up and own, can move backward and forward over a range of 2.5 inches, and can pivot 15 -17.5 degrees outward and inward.

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Whereas on x4 chair armrests can be adjusted height, depth, width, and angle. So level of adjustability of both armrests is the same.

But the area of adjustment that you will see on the Aeron is more than the x4. X4 chair armrests are made up of plastic and are not padded too.

Whereas armrests have been padded properly in the Aeron which makes them soft. Both office chairs have curves shape on their armrests.

Lumbar Support

Both office chairs have ergonomic design backrests. Aeron has an S-shape backrest and 3 types of lumbar support. X4 Comes with dynamic lumbar support.

  • Fixed
  • Adjustable
  • Adjustable PostureFit SL

And Yes, it is adjustable. Adjustable PostureFit SL is the best lumbar support of Aeron and is very supportive to back.

On it, you will see Two individual pads that can be adjusted separately to get better support to the spine.

This solved the problem of back pain as you can provide support to 2 different areas of your back. However, the back support of the x4 chair is more supportive than the Aeron.

The height of the backrest of the x4 chair can be adjusted. Also, the dynamic support is also great as it is adjusted and can move forward and backward.

Because of the combination of adjustable back and lumbar support you can get better support to your back.

Backrest Recline

Aeron has Tilt Limiter and Seat Angle feature which allows the user to choose the recline area position. You can allow the chair to recline fully or any limit this recline in 3 angles.

After choosing the reclining area, you can also set the force that you will need to recline your office chair.

The amount of force that you will need to put to reline the back can be controlled by rotating the knob clockwise and anticlockwise.

Moreover, you can also tilt your backrest forward by 3 inches which makes sitting more comfortable for the user. So now let’s come to x4 chair.

X4 office chair has a reclining back but you cant change the reclining area in this chair. So Yes, in this Aeron wins easily as their backrest is much more reclinable.


Both X chair and Herman miller have given high Customizability on their chairs. On X chair you can add these features to the chair-

  • Heat and massager or Heat and Air and massager. 
  • Leather or premium leather or Brisa.
  • Headrest
  • Increase seat width
  • Seat foam type 
  • Caster Type
  • Colors
  • Add Fabric Protection Plan 
  • And Footrest

Not to forget the more premium features you add to the chair the more expensive it will become. And on the Aeron chair, you also have tons of features that you can add. Features that you can add to your Aeron chairs are-

  • Size
  • Back support
  • Tilt
  • Armrests
  • Armpads
  • And casters

In terms of adjustability x4 chair easily wins as it offers more Customizability than the Aeron one. Many of the features of both office chairs are the same. But still, on x4 the options are much bigger than the Aeron.

Adjustable Headrest

Aeron chairs dont come with a headrest. But the X4 Chair comes with an adjustable headrest. The headrest increases the support to the neck area and also makes it easy to comfortably without neck pain.

You can adjust the height and angle of this headrest. The headrest of this chair is very supportive and provides great support to the neck area.

Still, if you want a headrest in your Aeron chair then you can buy a headrest from 3rd part seller on amazon.

Even though the person does not come with a headrest but still a 3rd part headrest can get attached to the Aeron easily. Best Headrest for Aeron is from Engineered Now Store.


In terms of comfort, it is pretty hard to tell which is more comfortable X chair or Herman Miller.

Both office chair is highly comfortable as they have an ergonomic design, soft seats, and back and have high adjustability. The back and seats of both chairs are comfortable.

The Aeron has a mesh seat and back which are really very comfortable. Moreover, they are also highly breathable so you won’t have sweating issues on hot days too.

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X chair has a breathable back and body which is also comfortable but can be uncomfy on hot days. The size of Aeron is larger than x4 and also design of the seats is more ergonomic.

That is why users dont have a hard feel to hips and butts while sitting. Plus, forward tilling also makes comfortable sitting.

However, you can increase the comforts of seats of x4 by choosing the wider seats and seat cushion. The back of the Aeron is more supportive and adjustable but dont have a headrest like x4.

But still, Aeron is more comfortable as you can also add a headrest to the Aeron chair. But even without a headrest, Aeron has the upper hand. To install The headrest Just Read This Guide to Install A Headrest In aeron chair.

Size and Weight

Herman Miller Aeron comes in 3 different sizes and weights. Aeron chair comes in A( Small ) with the weight of 90-150 Lbs, B ( Medium ) Weight 90-150 And C ( Large ) and 180 – 350 lbs.

This is why Aeron wins almost all sizes and weights of users. X4 chair has a weight capacity of 240lbs and comes only in 1 size.

However, the high adjustability of the chair makes it a good choice for most of the users who expect too small size or too heavyweight.

Shipping And Return

Both brands give free shipping, but in the USA you will get your office chair through FedEx. On both x chair and Herman miller, you get 30 days free return.

So if you dont like the chair after use you can return the chair and you will get your full money returned. However, on x chair, you need to pay 149$ to 200$ for the shipping cost, which is free in Herman miller.


A long warranty can be seen on both x4 chair and Aeron. On the X4 chair, you will get 15 years warranty and on the Aeron, the warranty is of 12 years.

You can get your Aeron chair repaired for free if the chair faces any issue. Also, the warranty includes labor charges.

And the service of Aeron is also fast and quick and solves customer problems very fast. However, in X chair you can get repair your chair for free for 5 years.

For the first 2 years, X-Chair will bear the entire cost of replacement parts and shipping. But next 3 years X-Chair will only bear the cost of the replacement parts but you have to pay the cost of shipping.

10 years warranty is for non-moving parts. But Herman miller covers full chair for 15 years.

So at first look, you may think that x chair warranty is more than Herman miller but it is not real. That is why Herman miller is known for its long-year warranty.


No need to assemble the Aeron chair as the chair comes fully assembled. You can just use the chair after taking it out from the box.

The X4 chair comes both assembled and unassembled. You can choose whether you want your office chair assembled or not.

The assembly of the X4 chair is not hard and can be done within 15 minutes. X chair gives instruction manual in the box where all instructions to assemble the chair are given very clear.

Assembly videos can also be found on their website and youtube channel.


Both Aeron and X4 chairs are one of the most expensive office chairs. Aeron has more build quality and comfortability than the x4 chair but the chair also cost more.

The base model of Aeron is $1440.00 whereas $1,254.98 is the cost of the base model of x chair.

As both chairs have high adjustability the price of both chairs can go up by 500-900$ depending on the features you choose in your chair.

The base model of both chairs is affordable for many people. If you find affording these 2 chairs then you should just pick the base model of these 2 chairs.

Good and Bad of Aeron

Pros of Aeron

  • The Build Quality is high. 
  • Has PostureFit SL pads that support the spine more than other types of Lumbar support.
  • Comes in multiple sizes.
  • Very Eco-Friendly chair.
  • Has highly breathable mesh back and seat.
  • Comes fully assembled.
  • Worth its price.

Cons of Aeron

  • Comes very costly and can be affordable for some people.
  • Not have adjustable seat depth. 

Good and Bad of X4 Chair

Pros of Aeron

  • The chair has adjustable dynamic back support.
  • Has High customizability.
  • Has Adjustable headrest and armrests.
  • Has 12 years of long warranty.
  • Very easy to clean.
  • Has smooth-rolling casters that can roll on all types of surfaces.

Cons of Aeron

  • Comes only in one size.
  • Not breathable and can have sweating issues in summer.

Which One Is Actually Better X Chair vs Herman Miller?

No doubt that both x4 chair and Herman miller Aeron are amazing chairs. They have supportive back and seats that provide a comfortable sitting experience without any back, neck, butts, and hips pain.

X chair is more affordable than the Aeron but the Aeron is also worth its price has it has high build quality. If you are looking for an affordable chair then go with x chair.

But if you want a solid chair that can last for decades then Aeron is made for you. Also, for users who want a most ergonomic backrest chair then you will love Aeron.

For cool-looking chairs lovers, an x4 chair is best as the chair comes in leather which looks stunning in all colors. Whereas the Aeron has very less color options.

Also lastly, read the full X Chair vs Herman Miller blog first and check the features both with chairs as by this you will be able to make a better decision.

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