The letter D on a massage chair counts the ways its rollers can move. A 2D roller travels up and down your back and side to side. A 3D roller also pushes out from the backrest into the muscle, and a 4D roller changes pace inside a stroke. Cozzia calls its Quantum a 5D chair because 27 sensors adjust the pressure as it works.
Merit Home Furniture carries seven Cozzia chairs on Vancouver Island, and between them they cover every one of those letters. The 2D Radiance is $4,199.00 and the 5D Quantum is $16,549.00, before applicable taxes. A massage chair is a power recliner with motorised rollers in the backrest and air cells that squeeze the arms, hips and legs.
Below, each term sits beside the chair that has it, with Cozzia's own figures. Where Cozzia's Canadian and US pages disagree, I print the cautious number and name the other.
What is the difference between a 2D, 3D and 4D massage chair?
The difference between a 2D, 3D and 4D massage chair is how many ways the roller head can move. Each step adds one movement to the one before, and the price climbs with it.
- 2D moves up and down the track and across your back. Depth stays fixed, so pressure comes from the roller's shape and the air cells. Cozzia calls the Radiance's version a "2D Humanistic Massage Mechanism".
- 3D adds in and out. The roller reaches forward from the backrest, 3 inches on the Zen 2 by Cozzia's figure, and a strength setting decides how far it goes.
- 4D adds timing. In general use, the fourth D means the roller can speed up or slow down within one stroke. Cozzia's pages describe the Qi XE Pro Duo's "4D + 4D Human-like Vario Motion" without spelling out the timing part.
- 5D is Cozzia's own label. Its US page says the fifth generation "includes everything in a 4D massage chair" and adds pressure sensors.
Two more words turn up on spec sheets. "Dual" or "Duo" means two separate mechanisms, one for the back and one for the seat and thighs, so two areas get worked at once. A "node" is the roller head itself, and the inch figure beside it is how far it can extend.
Shiatsu, kneading and tapping are massage styles, and they sit apart from the D count. A 2D chair and a 5D chair can both run a shiatsu program. The 3D, 4D and 5D chairs can simply press deeper while they do it.
Which Cozzia massage chair is 2D, 3D, 4D or 5D, and what each costs
All seven chairs sit in our full list of massage chairs, and all seven are sold through the Duncan store. Mechanisms and node sizes come from Cozzia's product pages, and Cozzia doesn't publish a node size for its 2D chairs. The Zen Duo's node figure is on its US page only. Prices are Merit's listings as read on October 9, 2026, before applicable taxes.
| Chair | Mechanism | Price |
|---|---|---|
| Radiance | 2D | $4,199.00 |
| Bliss ProFlex | Dual 2D | $4,749.00 |
| Fusion Pro | Dual 2D | $5,549.00 |
| Zen 2 | 3D, 3 in node | $6,649.00 |
| Zen Duo | Dual 3D, 3 in nodes | $9,799.00 |
| Qi XE Pro Duo | Dual 4D, 3 in nodes | $14,349.00 |
| Quantum | 5D, 3.9 in node | $16,549.00 |
The steps between those prices are the useful part. Moving from the 2D Radiance to the 3D Zen 2 costs $2,450. Moving from the Zen 2 to the 4D Qi XE Pro Duo costs $7,700, and the Quantum's fifth D adds another $2,200. Our walk through the seven price points covers what else changes at each step, from heat zones to warranty.
Who should consider a 2D massage chair?
A 2D massage chair suits someone who wants a steady, even massage and finds deep pressure too much. The roller keeps the same depth on every pass, so it rarely digs in hard, and the air cells and heat carry much of the work. A 2D chair is also the cheapest way into a full-body massage chair at Merit.
Our three 2D chairs differ more in track and room than in roller. The Radiance has a single 2D mechanism, 18 airbags, lumbar heat and an L-shaped track that curves under the seat. Its manual gives three speed levels and three roller widths: narrow, medium and wide. Cozzia rates it for 264 lb, lower than the rest of the line.
The Bliss ProFlex and the Fusion Pro each run two 2D mechanisms, with 34 airbags apiece. Both use Cozzia's Li Flex track. The Fusion Pro adds heat at the legs and offline voice control for $800 more than the Bliss ProFlex.
A 2D chair is the wrong pick for a knot that needs pressing rather than rolling over, and pressing is what the third D adds.
Choose 3D if you want adjustable depth: the Zen 2 and Zen Duo
A 3D massage chair is the one to choose for adjustable depth. The roller head pushes forward out of the backrest, so it can lean into one spot under a shoulder blade instead of passing over it. Cozzia gives a 3 inch node for both the Zen 2 and the Zen Duo. The Zen 2 manual lists "3D strength" on its strength screen, beside tapping speed and kneading strength, so the reach can be turned down.
The Zen 2 has a single 3D mechanism on an L-track, 30 air cells, and heat at the legs, lumbar and seat. At $6,649.00 it costs $1,100 more than the Fusion Pro, which is roughly the price of trading two 2D rollers for one 3D roller. Everything else about the Zen 2, from programs to box size, has its own page.
The Zen Duo puts a 3D mechanism in the seat as well as the back, so the glutes and thighs get the same reach. At Merit the gap between the Zen 2 and the Zen Duo is $3,150. Cozzia's two sites disagree on its track: the Canadian page says "L-Track Massage Extends Into Seat", and the US page says Li Flex. I've listed both until Cozzia settles it. The Zen Duo's own guide has its full measurements.
Which roller type fits your body and routine comes down to how often the chair gets used and how much pressure feels good. A daily user with tight shoulders is the person 3D was built for. Someone who wants a weekly unwind may never use the extra reach.
Are 4D massage chairs worth it over a 3D chair?
A 4D massage chair is worth it mainly to someone who will use it most days and notices rhythm. The fourth D varies the pace of a stroke, which can make a long program feel less like one pass repeated. The Qi XE Pro Duo is the only 4D chair Merit sells, and its price gap to the 3D chairs is wide.
Zen Duo, dual 3D, $9,799.00
Two 3 inch 3D mechanisms, 40 air cells and heat in two places. It needs 3.5 inches of wall clearance and lies flat at one touch. The Canadian warranty is 2 years parts and 2 years labour.
Qi XE Pro Duo, dual 4D, $14,349.00
Two 3 inch 4D mechanisms, 64 airbags and 4 heat zones, two of them in the mechanisms. It adds Cozzia's Chair Doctor biometric scan and needs 8 inches behind it. The warranty is 3 years parts and 3 years labour.
The Qi XE Pro Duo sits $4,550 above the Zen Duo on price, and that money buys the fourth D. The chair also gains 24 more airbags, a longer warranty and more programs, 36 against 28 on Cozzia Canada's pages. Whether the fourth D alone earns that money is something only a sit in both chairs, on the same program, can settle. The Qi XE Pro Duo in depth covers the rest of the chair.
Is there a 5D massage chair?
Yes, and the Quantum is Cozzia's. It keeps the 4D movement and adds 27 sensors that, in Cozzia's words, monitor "how much force is being applied" and adjust the pressure in real time. Its node reaches 3.9 inches, the furthest of the seven. "5D" is a maker's label, so another brand's 5D chair may mean something different.
Zero gravity, recline and wall clearance, chair by chair
Zero gravity is a recline position, separate from the roller's dimensions. Cozzia describes it as "a neutral posture position that takes the effects of gravity off the joints". Its Radiance page compares the pose to the one astronauts take at liftoff. Every one of the seven Cozzia chairs at Merit has a zero gravity setting. The Radiance has one position, the Bliss ProFlex and Fusion Pro have two, and the other four take one touch.
| Chair | Track | Wall gap |
|---|---|---|
| Radiance | L-track | 6 in |
| Bliss ProFlex | Li Flex | 11 in |
| Fusion Pro | Li Flex, two-stage | 11 in |
| Zen 2 | L-track | 6 in |
| Zen Duo | L-track or Li Flex | 3.5 in |
| Qi XE Pro Duo | Li Flex, two-stage | 8 in |
| Quantum | Li Flex, two-stage | 1 in |
A few of those figures come with a caveat. The Bliss ProFlex's two zero gravity positions are in its manual but not on its Canadian page. Fully reclined, the chairs run from 68.5 in for the Radiance (66.2 in on its Canadian page) to 79.5 in for the Zen Duo. The Qi XE Pro Duo reclines to 167 degrees, though the same page elsewhere says 170. The Fusion Pro and the Quantum reach a 170 degree lay flat by Cozzia Canada's figures.
The track decides how far back a chair can lie while the rollers keep working. An L-track runs from the neck down the back and curves under the seat. Cozzia's Li Flex track uses "a two-stage guide rail". The Quantum page says that lets the massage carry on "almost lying flat", which a standard L-track can't do. An S-track, which stops at the lower back, isn't on any chair we carry.
Is the best zero gravity massage chair always 4D? No. The Radiance, a 2D chair, has a zero gravity button too, so the recline and the roller are separate choices. Wall clearance doesn't follow the D count either, as the table above shows.
Does lying back ease the lower back? The evidence is thin. A 1999 study in the journal Spine measured disc pressure in one 45-year-old volunteer. It found 0.1 MPa lying face down, 0.46 MPa sitting without support and 0.5 MPa standing. That study never tested a massage chair or a zero gravity recline. So I treat zero gravity as a comfort setting that makes a long program easier to sit through.
Massage chair controls: remote, touchscreen and voice
Massage chair controls climb with the mechanism, which matters to anyone who dislikes screens. The 2D chairs lean on buttons, and the 3D, 4D and 5D chairs lean on a touchscreen and a dial. Cozzia's US product pages list each one.
- Radiance and Bliss ProFlex: a wired LCD remote with buttons.
- Fusion Pro: a handheld remote, a smart dial on the armrest and offline voice commands.
- Zen 2: a 7 inch wired touchscreen and armrest buttons, with Alexa voice commands in English.
- Zen Duo and Qi XE Pro Duo: a wired touchscreen, a smart dial and offline voice control.
- Quantum: a widescreen touch pad, by its manual, and voice control.
Offline voice means the chair hears commands without an internet connection, which suits a rural Island house with patchy Wi-Fi. A remote with real buttons is easier for anyone with poor eyesight or stiff fingers, and among Merit's seven it comes with the 2D chairs.
When a 3D, 4D or 5D massage chair is the wrong choice
A 3D, 4D or 5D massage chair can press harder than a 2D one, and for some bodies that's the wrong direction. Cozzia's manuals for all seven chairs list the people who should consult a doctor before use. The list starts with a pacemaker or other electronic medical device, a possible pregnancy, phlebitis, thrombosis and a higher risk of blood clots. It goes on to osteoporosis, diabetes, spinal problems, recent surgery, and pins or screws in the legs, ankles or feet.
HealthLink BC's massage therapy page gives a similar list for hands-on massage: a blood clot in a vein, a bleeding disorder or a blood thinner, and recent surgery. It says people use massage "to help relax and to relieve pain", and its wording stays cautious throughout. If any of those apply, please talk to your doctor before buying, or call HealthLink BC at 8-1-1.
For everyone else, the manuals set two limits worth knowing before picking a stronger chair. They advise against more than 30 minutes per session and more than 5 minutes on one spot. Start a 3D or 4D chair at its lowest strength and work up from there. Cozzia's FAQ warns against trying "to resolve chronic issues all in one day", because fatigue and soreness can follow.
Size can rule a chair out too. Cozzia's FAQ says its chairs hold up to 300 lb, though most product pages print 320 lb, and I go by the 300. The FAQ fits people from about 5'2" to 6'3", and up to 6'5" on premium models with extended footrests.
Warranty, after-sale support and financing on a Cozzia chair
A Cozzia warranty in Canada lengthens as the mechanism climbs. The three 2D chairs and the Zen 2 carry 2 years on parts and 1 on labour. The Zen Duo carries 2 and 2, and the Qi XE Pro Duo and Quantum carry 3 years on both. Cozzia requires "a valid proof of purchase" for every warranty repair, so the dated receipt is worth filing with the manual.
For after-sale support and service, Merit backs the maker's warranty: we order the parts and do the repairs. Cozzia Canada says its in-home repairs are "readily available in and around major metropolitan areas". None of our four towns fits that description, so our own repair backing counts for more here. SmartOne, a five-year extended plan from Zucora, is sold at Merit too. It covers massage chairs too, the same as recliners and mattresses.
Cozzia won't take a chair back for a change of mind; its warranty page rules out return authorizations "for buyer's remorse". We encourage exchanges up to 30 days, case by case. A chair we order in for you is a special order and takes a 24% deposit.
We finance. Ask us how.* The lender behind our plans is Fairstone®.
*On approved credit. Terms and conditions apply. An annual fee will be charged to your account as set out in the Retail Credit Agreement. See our Financing page for more details about our plans.
To feel the letters quickly, I'd run three chairs on one program at the lowest strength, five minutes each. The order is the Radiance, then the Zen 2, then the Qi XE Pro Duo. That goes 2D, 3D, 4D in order and takes a quarter of an hour.
Where the 2D, 3D and 4D figures come from
- Cozzia Canada product pages: Radiance specifications (CZ-330), Bliss Pro Flex specifications (CZ-335), Fusion Pro specifications (CZ-390), Zen 2 specifications (CZ-645), Zen Duo specifications (CZ-650), Qi XE Pro Duo specifications (CZ-718) and Quantum specifications (CZ-800), checked October 2026.
- Cozzia USA product pages: Quantum and its 5D definition, Zen 2, with zero gravity wording, Zen Duo node and track and CZ-330 recline and controls, checked October 2026.
- Cozzia user manual index, used for safety precautions, session limits and controls, checked October 2026.
- Cozzia Canada FAQ on weight, height and session length, checked October 2026.
- Cozzia Canada warranty terms, returns and in-home service, checked October 2026.
- HealthLink BC, massage therapy uses and who should avoid it (current as of September 8, 2022), checked October 2026.
- Wilke HJ et al., New in vivo measurements of pressures in the intervertebral disc in daily life, Spine 1999;24(8):755-62, checked October 2026.
- Merit Home Furniture product listings and store policies, read October 2, 2026.
Comparing massage chair roller types in person on the Island
Comparing roller types in person tells you more than any table, and a chance to try different models before buying is what a store offers. Merit's Duncan store at 107 Ingram St sells all seven Cozzia chairs. Which ones are set up to run changes, so a call before the drive is worth it. Hours at the Duncan store run 9 to 5, Monday through Saturday.
A chair sent from Duncan costs $150 to deliver across the Island, assembly included, and Gulf Islands delivery depends on the island, with details from the Duncan store. Those are Duncan's terms; our Nanaimo, Campbell River and Port Alberni stores set their own, so ask the nearest one. Pickup at Duncan is free.
For the wider decision, what to look for before choosing any massage chair covers fit, room and budget. The massage chair guides, all in one place list the rest, and Merit's Cozzia chairs are listed side by side.