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Frequently Purchased Together
At a Glance
Electrical Requirements
30-day returns • 7-year compressor warranty • Free shipping • Live US support 9–5 MST
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System Overview
Your Purchase Includes
Everything you need for a complete installation





Summary
- Voltage: 208-230V
- Environmentally friendly R454B (pre-charged)
- Low ambient range operation: heating down to Independent zone control
- Variable-speed DC inverter driven performance
- Pre-charged lineset included for DIY installation
- Energy Star certified
Features
- Three 9,500 BTU concealed units
- Completely hidden installation
- Independent temperature control per zone
- Each unit can supply 2-3 rooms
- Ultra-quiet 39 dB operation
- Three pre-charged linesets included
- WiFi and wired controller options
The outdoor unit is factory pre-charged with R454B (pre-charged) refrigerant, accommodating refrigerant line lengths of up to 25 ft. per circuit. If using a lineset that exceeds this length, additional refrigerant will need to be charged into the system during installation. This model can only be purchased with the 25 ft. lineset option. If needing a different length, please purchase additional linesets here.
Thin-Air Concealed Series
Zone Air® concealed ducted systems hide completely above ceilings or in closets with only supply and return grilles visible. Ultra-slim design with built-in condensate pump and high static pressure for flexible duct routing.
What's Included in Your Purchase
- ✓ Indoor Unit
- ✓ Outdoor Unit
- ✓ Wired Wall Controller
- ✓ 16 Ft. Copper Lines
- ✓ 16 Ft. Electrical Wire
- ✓ 10 Ft. Drain for Indoor/Outdoor
- ✓ Wall Passage Sleeve
- ✓ Putty for Wall Hole
- ✓ Leak Guard Sealer
- ✓ Wrapping Tape
- ✓ Installation Manual
- ✓ User's Manual
Quick-connect lineset installation
Product Warranty
Coverage applies to the original purchaser with proof of purchase. See our Warranty Policy.
- 5 years warranty on parts
- 7 years warranty on compressor
Manuals & Documents
Technical Information & Performance
SYSTEM KIT
| Connected Indoor Capacity | 28,500 BTU/h (3× 9,500) |
| Per Zone Capacity | 9,500 BTU/h each |
| Outdoor Unit Rated Cooling Capacity | 27,000 BTU/h (4,500-31,000 range) |
| Outdoor Unit Rated Heating Capacity | 28,000 BTU/h (4,500-33,000 range) |
| SEER2 Rating (Ducted) | 22 |
| HSPF2 Ducted (Region IV/V) | 9.0 / 7.8 |
| Voltage | 208-230V / 60Hz |
| Breaker Needed | 30A (double-pole) |
| Number of Zones | 3 |
| Refrigerant Type | R454B (pre-charged) |
| Indoor Units | 3× concealed units |
| Indoor Unit Dimensions | 36" W × 9" H × 20" D each |
| Linesets Included | 3× 16 ft pre-charged |
| Operating Temperature | -13°F to 131°F |
| Sound Level (per unit) | 26–40 dB |
| Outdoor Sound Level | 62 dB(A) |
| Outdoor Unit Dimensions (WxDxH) | 38-1/2" x 16-1/2" x 31-5/8" |
| Outdoor Unit Weight | 119 lbs |
| External Static Pressure | 0.1-0.4" WG |
| Maximum Duct Length | 15 ft per supply |
| Condensate Pumps | Integrated in each unit |
INDOOR UNIT
| Part Number | zdiy-cd-9I |
| Net Dimensions (WxDxH) | 27-1/2" x 19-1/4" x 7-7/8" |
| Carton Dimensions (WxDxH) | Coming soon |
| Net / Gross Weight | Coming soon |
OUTDOOR UNIT
| Part Number | zdiy-cd-27O |
| Breaker Needed | 30A (double-pole) |
| Net Dimensions (WxDxH) | 38-1/2" x 16-1/2" x 31-5/8" |
| Sound Level | 62 dB(A) |
| Carton Dimensions (WxDxH) | Coming soon |
| Net / Gross Weight | 119 lbs |

Completely Invisible HVAC
Hidden Installation
Installs above ceilings or in closets with only discreet supply and return grilles visible.
Fits Almost Anywhere
Ultra-Slim Profile
At just under 8 inches tall, fits in tight spaces like closet ceilings, soffits, and shallow attics.


Flexible Drainage
Built-In Condensate Pump
Integrated condensate pump lifts water up to 30 inches for flexible unit placement.
Professional Performance
High Static Pressure
Up to 0.5" WC of static pressure pushes air through longer duct runs to supply multiple rooms from a single unit.

Advanced Features
Smart Climate Control
- ✓Independent zone control
- ✓Ducted multi-room distribution
- ✓24-hour programmable timer
- ✓Turbo mode for rapid cooling/heating
- ✓Auto mode with intelligent temperature control
- ✓ECO mode for energy savings
Premium Components
- ✓High-efficiency rotary compressor
- ✓Premium indoor blower motors
- ✓Variable speed fan control
- ✓R454B eco-friendly refrigerant
- ✓Fire-proof electrical enclosure
- ✓High-efficiency heat exchanger
Convenience & Safety
- ✓Auto-restart after power loss
- ✓Self-diagnostic system
- ✓Refrigerant leakage detection
- ✓Adjustable static pressure
- ✓Wired or wireless control
- ✓Temperature display toggle (°C/°F)
Easy Maintenance
- ✓Front-access filter design
- ✓Washable air filters
- ✓Built-in condensate pumps
- ✓Self-cleaning function
- ✓Large service access panels
- ✓Filter change indicator
Operating Temperature Range
Three Hidden 9.5K Air Handlers, One Outdoor Unit — Completely Concealed 3 Zone Comfort
This 3 zone concealed ducted mini split hides all three indoor units above the ceiling or inside soffits — the only visible hardware is a discreet supply grille in each zone. Three 9,500 BTU Thin-Air ducted units condition up to 1,425 square feet across three independently controlled zones, and because each unit can feed short duct runs to two or three registers, a single zone can cover a bedroom plus its closet.
Three pre-charged R454B linesets ship in the box, so the refrigerant circuit never opens — no vacuum pump, no gauges, and no EPA Section 608 license. The 27,000 BTU multi-zone condenser is rated 22 SEER2 with heating down to -13°F, and one outdoor unit serves all three hidden air handlers from a single circuit and a single set of penetrations.
Why You'll Love It
- Completely Invisible — All three air handlers hide above the ceiling or in soffits — only a discreet grille shows in each room, for climate control that looks fully built-in.
- Multi-Room Per Zone — Each 9,500 BTU ducted unit can feed short runs to two or three registers, so one zone can quietly cover a bedroom plus a bathroom and closet.
- Right-Sized 9.5K Zones — Each unit covers up to 475 sq ft — ideal for smaller suites and finished rooms where hidden equipment and a modest load make sense.
- True DIY Refrigerant Side — Three pre-charged, quick-connect linesets mean no vacuum pump, no gauges, and no HVAC license — you handle the mounting and short duct runs, the refrigerant work is done.
- 5-Year Warranty Protection — Zone Air backs all three concealed units and the condenser with 5-year parts and 7-year compressor coverage, plus 30-day returns on uninstalled systems.
What Makes It Different
Concealed ducted systems are almost always sold as full pro installs because they assume a technician will charge three line runs and design the ducting. The Thin-Air keeps the refrigerant side DIY with pre-charged, quick-connect linesets while you handle the mounting and short duct runs.
- Three Pre-Charged Linesets — Every line run arrives factory-sealed with R454B inside. Hand-connect the quick-connect fittings on each unit, torque to spec, and the circuit is ready — no vacuum pump, no gauges, no HVAC license.
- Closely Matched Capacity — Three 9,500 BTU units connect 28,500 BTU/h of indoor capacity to a 27,000 BTU/h rated condenser — a standard multi-zone ratio that works because three zones rarely peak together. Both numbers are in the spec table below.
- One Circuit, Not Three — A single 230V circuit on a 30A double-pole breaker powers all three hidden air handlers, instead of three separate circuits for three single-zone units.
How It Works
- Mount and Duct — Secure each concealed air handler above its room — in the ceiling cavity, a soffit, or a closet — and connect short supply runs to the discreet grilles. Set the outdoor unit on a pad or bracket and route the three pre-charged linesets.
- Connect and Check — Hand-thread the quick-connect couplings on each of the three circuits, torque to spec, and test every joint with soapy water before startup.
- Power and Pair — Wire the condenser to a dedicated 208–230V circuit (a licensed electrician is recommended for the disconnect box), then set up each zone on its wired controller or the WiFi app.
Who It's For
This 3 zone concealed system is for:
- Luxury homes, historic renovations, and finished spaces where all equipment must stay out of sight
- DIYers comfortable mounting hidden handlers and running short duct runs, who want to skip the refrigerant work
- Three smaller suites or rooms around 350–475 sq ft each, some feeding more than one register
- Cold climate homeowners who need dependable heat in every zone down to -13°F
Need more capacity? The 3 zone 33K (11K×3) concealed system steps each zone up to 550 sq ft.
Frequently Asked Questions
Where do the three air handlers go if nothing shows in the rooms?
How much area does each 9,500 BTU zone cover?
How can a 27,000 BTU condenser support three 9,500 BTU units?
Do I need an HVAC license to install a concealed 3 zone system?
Three Invisible Zones. One Weekend. Zero Contractors.
Completely hidden comfort in three rooms with one condenser, three pre-charged linesets, and a refrigerant-free DIY install.
Free shipping. 30-day returns on uninstalled systems.
Complete Your Installation
Accessories and extensions for your system

9 Ft. Pre-Charged R454B Lineset Extension Kit for 9K & 12K BTU Mini-Split Systems

9 Ft. Pre-Charged R454B Lineset Extension Kit for 18K BTU Mini-Split Systems

Heavy-Duty Foldable Wall Mount Bracket for Mini-Split Outdoor Condenser Units

