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Description
Pioneer® Multi (4) Circuit Diamante Ultra Series 21.5 SEER2 Quad Zone Outdoor Section Inverter++ Energy-Star Air Conditioner Heat Pump 230VOverview Performance Power Supply: 208~230V, 60Hz, 1Ph Communication Protocol: Current Loop Min Max Load Attached: 24,000~48,000 BTU h Cooling Rated Capacity: 33,000 BTU h Cooling SEER2 (Ductless): 21. 5 BTU W. h Cooling EER2 (Ductless): 12. 0 BTU W. h Heating Rated Capacity: 35,600 BTU h Heating HSPF2 (Ductless): 9. 0 BTU W. h Heating C. O. P. 2 (47F 5F): 3. 6 2. 12 W W Refrigerant Type: R410a Suitable Area: 750~1,500 Sq. F Sound Level: 63. 0 dB(A)
Overview
Performance
- Power Supply: 208~230V, 60Hz, 1Ph
- Communication Protocol: Current Loop
- Min-Max Load Attached: 24,000~48,000 BTU/h
- Cooling Rated Capacity: 33,000 BTU/h
- Cooling SEER2 (Ductless): 21.5 BTU/W.h
- Cooling EER2 (Ductless): 12.0 BTU/W.h
- Heating Rated Capacity: 35,600 BTU/h
- Heating HSPF2 (Ductless): 9.0 BTU/W.h
- Heating C.O.P.2 (47°F/5°F): 3.6 / 2.12 W/W
- Refrigerant Type: R410a
- Suitable Area: 750~1,500 Sq.F
- Sound Level: 63.0 dB(A)
- Circuit Breaker Utilized: 25A (double-pole)
- Net Dimensions (WDH): 39"-1/4 x 15"-5/8 x 35"-1/2
- Carton Dimensions (WDH): 41" x 17"-3/8 x 39"-3/8
- Net / Gross Weight: 166.1 / 186 Lbs
Manuals & Documents
- Technical Brochure
- Submittal Sheet
-
Installation Manual (Multi-Split Addendum)
- Service Manual
- AHRI Certificate
- Energy Guide
Quad Zone Combinations (in thousands BTU)
| Two Units | Three units | Four units |
|---|---|---|
| 9 + 18 | 9 + 9 + 9 | 9 + 9 + 9 + 9 |
| 9 + 24 | 9 + 9 + 12 | 9 + 9 + 9 + 12 |
| 12 + 12 | 9 + 9 + 18 | 9 + 9 + 9 + 18 |
| 12 + 18 | 9 + 9 + 24 | 9 + 9 + 12 + 12 |
| 12 + 24 | 9 + 12 + 12 | 9 + 9 + 12 + 18 |
| 18 + 18 | 9 + 12 + 18 | 9 + 12 + 12 + 12 |
| 18 + 24 | 9 + 18 + 18 | 12 + 12 + 12 + 12 |
| 24 + 24 | 12 + 12 + 12 | |
| 12 + 12 + 18 | ||
| 12 + 18 + 18 | ||
| 12 + 12 + 24 |
9,000 BTU Compatible Units
- Wall Mounted: WT009GLFI22HLD (32-1/4 x 7-5/8 x 12 inches WDH)
12,000 BTU Compatible Units
- Wall Mounted: WT012GLFI22HLD (36-1/4 x 7-5/8 x 12 inches WDH)
18,000 BTU Compatible Units
- Wall Mounted: WT018GLFI22HLD (43-3/8 x 8-3/4 x 13-1/8 inches WDH)
24,000 BTU Compatible Units
- Wall Mounted: WT024GLFI22HLD (43-3/8 x 8-3/4 x 13-1/8 inches WDH)
Min. / Max. Loading
24,000 / 48,000 BTU/h.
Notes
- Different models of all available matching indoor units can be combined in any order to create a multi zone split system, up to a quantity of the number of available circuits.
- Not all available circuits need to be utilized with an attached indoor unit. 66% or higher of the total capacity utilization is recommended.
- Every indoor unit attached to a multi zone system will operate at a random, self-regulated capacity, based on the actual demand it measures from the zone it is serving (Between 30% to 100% of its rated capacity) or turn OFF as needed.
- Outdoor unit will also self-regulate its total output capacity, based on the total demand it reads from all the simultaneously running indoor units at any given moment, up to its maximum rating capacity.
- With multi split systems, the total demand from the outdoor unit, will seldomly exceed 75% of the total available capacity of the combined indoor unit group due to load fluctuations of each indoor unit.
- Therefore, total attached indoor unit capacity can be selected up to 133% of the supporting outdoor unit's rated capacity.
- Although very seldom, if the total demand from the combined group of indoor units' exceeds the rated capacity of the outdoor unit, the capacity of the each indoor unit will be annotated accordingly.
- For high demand applications, max loading limits may need to be reduced up to 20% to avoid underperformance risks during some extreme conditions.
Shipping Notes
- Free Standard Shipping on $100+ Orders to the USA.
- Except Preorder products are shipped in 48 hours.
- Delivery to the USA:
- Standard Shipping : 3-10 business days
- If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
- We offer a 30-day return/exchange service after receiving.
- Final sale items are not eligible for returns or exchanges.
- To process your return/exchange, please contact us at [email protected]
- Please click here for more details>>> Return & Exchange Policy
4.8 ★★★★★
Based on 1305 reviews
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Product Reviews
★★★★★ 3
Cheaply made but functional
Color: Black
Pros:
The headrest is highly adjustable. Even if you're tall you'll likely be able to tilt it so that you can rest your head on it while reclining.
The instructions for putting it together are easy to follow.
It's perfectly serviceable as a desk chair with no glaring defects.
The mesh material keeps your body cool and dry even when sitting in it all day.
Cons
It's obviously very lightweight and cheaply made. This does make the chair easier to move, but this doesn't really feel like a $180 chair at all. More like a $120 or even $100 chair.
The chair back is attached to the chair seat by a plastic bracket. Nearly every desk chair I've had in the past has had their back attached to the bottom with a metal bracket, and even those start to bend out of shape after a year or so. While reclining a good portion of your weight will be resting on this plastic bracket, and I simply cannot see this cheap plastic lasting for very long supporting anyone's body weight over a long period of time. If you buy this chair, make sure to get the warranty.
The armrests are closer together than on most chairs, which creates a claustrophobic feeling of being squeezed by them. You get used to it eventually, and you can just put the armrests up if you want to, but a way to adjust the armrest width would have been nice.
The lumbar support doesn't really do anything at all. It only presses against my back at the most intense setting, and even then not very much.
There is no incremental recline setting. Either you are fully reclined, or sitting fully upright. Luckily the full recline setting is about perfect for me, but for a $180 chair you'd expect a bit more settings here.
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Reviewed in the United States on April 21, 2026
★★★★★ 5
Great Chair
Color: Black
Very comfortable chair! I’m a big guy - 6’ 2”, 285 lbs. and it fits me perfectly. The head rest is a nice touch and I appreciate it more than I thought I would. Lumbar support is in just the right position and is adjustable (more support vs. less support). It does adjust up and down but not very much. Was also super simple to put together although I did have to crank on the screws that attach the back of the arm rest to the back of the chair. If you’re looking for a place to plant your butt for 8 hours, this is your chair.
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Reviewed in the United States on April 14, 2026
★★★★★ 5
Great product
Color: Dark Black
Easy to assemble and very good quality
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Reviewed in the United States on May 6, 2026
★★★★★ 1
DO NOT BUY! DO NOT BUY! DO NOT BUY!
Color: Black, Color: Black
Absolute garbage chair. Only had for six month and the mesh on the seat has already come apart after using it for my home office. Chair was squaking after only three months and now I can't even sit in it cause it sags.
Can't even get my money back for this cheap garbage.
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Reviewed in the United States on May 7, 2026
★★★★★ 5
Very comfortable with good lower-back support
Most comfortable, well made, easy assembly office-gaming chair (very pleased)!
*I suggest, HOLD-OFF popping the seat onto the upper-cylinder until AFTER assembling the back-rest onto the seat/arm-seat with back-rest as a unit...can then be popped onto the upper gas-cylinder(Much more stable than fighting with chair freely rolling and turning) while attempting to aligning the holes assembling the back-rest.
Afterwards the seat with back-rest assembled can easily be popped onto to the upper-end of the gas-cylinder and we are good to go!
* do pay attention to using the correct bubble-packed bolts for each assembly, as directed
* all the holes align -up very precisely... so if screwing in the bolt(s) and after a couple-turns it gets hard-to-turn, we are 'cross-threading the bolt into the threaded hole...so back-out and realign the bolt as so it threads in very easy.
* the bubble-pack of bolts are clearly labeled so as we easily know which ones go where.
*0ne bubble-packet even includes a spare group just in case we lost one (like out in the grass-lawn)?
* Included a T-handle alien-head wrench (all needed for total assembly) very nice for having around if any re-tightening needed. all speaks Quality!
>>> Been using about a month now...And I REALLY like this office gaming chair
_ very comfortable cushioned well and excellent lower-back support
_ the faux-leather seems to be more thick and durable and stitching is NOT ripping-out (as my previous & more expensive chair had done with it's paper-thin faux leather)
_ easy assembled chair seems very sturdy and solid, (yet light weight), in moving around, (not some wobbly contraption as my previous more expensive chair).
_ a strong Five-Star rating!
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Reviewed in the United States on March 14, 2025