Infinity Circadian 4D DualFlex Review
By ChairMentor Editorial Team · Research and editorial standards
Last reviewed 2026-09-27
Specifications are sourced from manufacturer documentation and retailer listings, each with a citation and verification date. How we research.
- Price
- $16,999
- Best for
- Flex-track 4D coverage with heat at both the low back and feet
- Roller / track
- 4D · L track
Pros
- 4D rollers on a flex track with published lumbar and foot heat
- Five-year residential warranty
- 2" wall clearance despite a full-size frame
Cons
- One of the most expensive chairs we have verified
- Street price still sits well above the 4D value tier
- Comfort and reliability are unrated — we have not sat in it
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Who it suits, who should skip it
Infinity's flex-track 4D flagship, with heat at both ends of the body and a five-year warranty. Research Review based on Infinity's published product page and user manual.
Best for: Flex-track 4D coverage with heat at both the low back and feet. Skip it if you fall outside the stated fit (Not verified in sources checked, up to 300 lb), cannot give it 2" of wall clearance, or would rather spend less — our budget guides cover cheaper verified chairs.
Buying trade-offs from the published specs
- We have not verified a model-specific user height range for the Circadian 4D DualFlex in the sources checked. Track length is not a fit rating, so confirm roller reach at the shoulders in person or with the seller before buying.
- It needs only 2 in. behind the backrest to recline, so it can sit close to a wall.
- Its stated user weight limit is 300 lb; 6 chairs we publish list a higher limit.
- 14 other 4D chairs we publish have a lower recorded price, so the premium has to be justified by fit, warranty or features.
- Warranty as published: 5-year limited residential warranty. Compare labor, parts and structure tiers separately.
Massage system
Rollers and track: 4D rollers on a L track. More roller axes add depth and rhythm control; track shape decides how far down the body the rollers travel.
Air, feet and calves: an unverified number of airbags; foot rollers yes, calf rollers yes. Airbag counts are not comparable across brands without placement data.
Heat, recline and programs: heat at lumbar, feet; an unverified number of zero-gravity position(s); stretch programs yes; body scanning yes.
We have not measured pressure, noise or heat output on this chair; these figures are the manufacturer's.
Controls and app
Voice control: Not verified. Bluetooth: Yes. Manufacturer app: Not verified.
Fit and space
Stated user height: Not verified in sources checked. Maximum user weight: 300 lb.
Upright: 49" L x 35" W x 66" H. Reclined: not verified. Required wall clearance: 2".
We do not describe seat feel or cushioning without a hands-on record.
Related: fit guide for tall users, fit guide for shorter users and the space planning guide.
Warranty, delivery and price
5-year limited residential warranty. Coverage tiers commonly differ between parts, labor and structure, and can vary by retailer.
White glove delivery: Not verified. Chair weight: not verified — measure doorways and stairs before delivery day.
Recorded price: $16,999 (last checked 2026-09-01). Prices change often; confirm the current price and stock at the seller.
Related: warranty comparison across brands, delivery guide and moving a massage chair.
Alternatives
Comparable chairs from our database are linked below.
Final verdict
Infinity's flex-track 4D flagship, with heat at both ends of the body and a five-year warranty. Research Review based on Infinity's published product page and user manual.
Scorecard
Scores are calculated from the verified specifications below, using the same formula for every chair on the site. They rate the hardware on paper, not how the chair feels — see the scoring rules.
8.9
out of 10 · spec score
- Massage hardware 30% of overall
- 9.5
- Body fit 20% of overall
- 10.0
- Feature set 15% of overall
- 9.2
- Controls and automation 10% of overall
- 10.0
- Warranty 15% of overall
- 9.0
- Value for money 10% of overall
- 3.0
4D rollers (4 of 4) · L track (2.3 of 2.5) · foot rollers (0.8 of 0.8) · calf rollers (0.4 of 0.4) · heat in 2 zones (0.3 of 0.5) · 5 of 7 inputs verified; scored over verified inputs only
300 lb user weight limit (2 of 2) · 1 of 3 inputs verified; scored over verified inputs only
stretch programs (1.5 of 1.5) · body scanning (1.5 of 1.5) · heat: Lumbar, Feet (1 of 1.5) · Bluetooth audio (0.8 of 0.8) · foot rollers (0.7 of 0.7) · 5 of 6 inputs verified; scored over verified inputs only
automatic body scan (2 of 2) · Bluetooth pairing (0.5 of 0.5) · 2 of 4 inputs verified; scored over verified inputs only
5-year published term (9 of 10)
capability 9.6/10 at $16,999 · ranks 1 of 26 published chairs on capability per dollar
Not scored
- Comfort and upholstery
- How a chair feels over a 30-minute program cannot be read off a spec sheet. We score this only for chairs we have sat in.
- Reliability and service
- Requires long-term ownership data we do not yet have. Warranty terms are scored separately; actual service quality is not.
Full specifications
Specifications are stored once in our product database and rendered here, on comparisons, and in buying guides.
| Brand | Infinity |
|---|---|
| Model | Circadian 4D DualFlex |
| MSRP | $23,400 |
| Recorded price (lowest named seller) | $16,999 |
| Roller type | 4D |
| Massage track | L track |
| Track length | Not verified |
| Airbags | Not verified |
| Zero gravity positions | Not verified |
| Heat locations | Lumbar, Feet |
| Foot rollers | Yes |
| Calf rollers | Yes |
| Body scanning | Yes |
| Stretch programs | Yes |
| Voice control | Not verified |
| Bluetooth | Yes |
| App | Not verified |
| Dimensions (upright) | 49" L x 35" W x 66" H |
| Dimensions (reclined) | Not verified |
| Required wall clearance | 2" |
| Chair weight | Not verified |
| Maximum user weight | 300 lbs |
| Recommended user height | Not verified in sources checked |
| Warranty | 5-year limited residential warranty |
| White glove delivery | Not verified |
| Country of manufacture | Not verified |
| Price last checked | 2026-09-01 |
| Specifications last verified | 2026-09-01 |
Where these specifications come from
Each figure below was read off the page listed and dated when we checked it. Manufacturers revise specifications without notice — if a number here disagrees with the retailer at checkout, the retailer’s page governs.
[1] Infinity official product page — 4D massage mechanism — checked 2026-09-01
Roller system, Track type, Foot rollers, Calf rollers, Heat locations, Body scanning, Stretch programs, Bluetooth audio, Warranty
[2] Infinity official user manual specification table — 300 lbs max user weight — checked 2026-09-01
Max user weight (lbs), Dimensions upright, Wall clearance (in)
Frequently asked questions about the Infinity Circadian 4D DualFlex
Answers are generated from the same cited specifications shown above. Where a figure is not published by the manufacturer, we leave the question out rather than guess.
- What is the weight limit on the Infinity Circadian 4D DualFlex?
- The published maximum user weight is 300 lbs. That figure is a structural limit for the frame and airbags, not a comfort rating — shoulder and hip width matter just as much for fit.
- How much space does the Infinity Circadian 4D DualFlex need behind it?
- Infinity publishes a 2" wall clearance requirement. Measure from the finished wall — baseboards and outlet covers count against that gap.
- What are the dimensions of the Infinity Circadian 4D DualFlex?
- Upright, the published footprint is 49" L x 35" W x 66" H. Check doorways and stair turns before delivery.
- Is the Infinity Circadian 4D DualFlex a 4D chair?
- Yes. Infinity lists a 4D mechanism on an L-track, which means roller speed and depth are adjustable independently rather than fixed.
- Does the Infinity Circadian 4D DualFlex have foot rollers, and can they be turned off?
- Yes, Infinity lists foot rollers. We have not found a documented on/off or speed control for them in the sources we cite, so check the manual or ask the seller if that matters to you.
- Where does the Infinity Circadian 4D DualFlex apply heat?
- Infinity publishes heat at: lumbar, feet. Other areas are not listed as heated in the sources we cite.
- What warranty comes with the Infinity Circadian 4D DualFlex?
- Infinity publishes: 5-year limited residential warranty. Warranty terms often differ between the manufacturer and individual retailers, so confirm the coverage on the invoice you actually sign.
- How much does the Infinity Circadian 4D DualFlex cost?
- We recorded $16,999 at Infinity (manufacturer site) on 2026-09-01. Prices change often; confirm the current price and stock with the seller.
- Has ChairMentor tested the Infinity Circadian 4D DualFlex?
- This is a Research Review. Every specification on this page is cited to Infinity's own documentation and dated, but we have not sat in this chair, so we do not rate comfort, noise or long-term reliability.
Owner reviews
Submitted by readers who own this chair. Every post is moderated before it appears, and owner ratings are kept entirely separate from our specification score — they never change a score, a ranking or a best-of pick.
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Update log
This page is re-checked at least every six months, and sooner when a price, warranty term or specification changes.
- 2026-09-27Replaced a placeholder retailer link with the manufacturer page.