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System Overview
36,000 BTU
Connected capacity (9,000 + 9,000 + 18,000)
27,000 BTU
Outdoor rated capacity
208-230V / 30A
Power
24 SEER2
Efficiency
−13 to 131°F
Functional temperature range
Up to 1,800 sq ft
Max room size
30 dB per unit
Sound
Zone Air® DIY 3 ZONE 36,000 BTU (9K+9K+18K) 24 SEER2 230V Wall Mount Ductless Mini-Split Heat Pump System - Up to 1,800 Sq Ft
$4,009.99$5,599.99
Save $1590 (28% off)
Free shipping · Estimated delivery: about 4 days from order
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USA based testing, inspection, and final assemblyAt a Glance
Power: 208-230V / 30A, dedicated circuit, electrician recommended
Room size: Up to 1,800 sq ft in mild climates
Install: DIY install, pre-charged quick connect systems mean no vacuum pump or contractor needed
Lineset: Sold separately — add a pre-charged lineset per zone below, from $229.99 for 16 ft up to 75 ft
Not sure this is the right size for your room? Check my room size →
Add your linesets
Ships without linesets — measure each indoor-unit-to-condenser run and pick a length, or skip zones you already have a line for.
Frequently Purchased Together
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16 ft. Lineset Cover — paintable PVC line hide · up to 3
$99.99
30A Disconnect + Whip Kit — code-required outdoor shutoff
+$99.99
Wall Mount Bracket
holds up to 550 lbs
+$109.99
Ground Mount Bracket (Multi-Zone)
freestanding steel stand
+$159.99
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System Overview
36,000 BTU
Connected capacity (9,000 + 9,000 + 18,000)
27,000 BTU
Outdoor rated capacity
208-230V / 30A
Power
24 SEER2
Efficiency
−13 to 131°F
Functional temperature range
Up to 1,800 sq ft
Max room size
30 dB per unit
Sound
Your Purchase Includes
Everything you need for a complete DIY installation
3x Indoor Air Handlers
Outdoor Condenser
Installation Kit
3x Remote Controls
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 quick-connect lineset sold separately — from $229.99 per zone
- Energy Star certified
Technical Information & Performance
SYSTEM KIT
| Connected Indoor Capacity | 36,000 BTU/h (9,000 + 9,000 + 18,000) |
| Per Zone Capacity | 9,000 / 9,000 / 18,000 BTU/h |
| 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 | 24 |
| EER2 Rating | 12.0 |
| HSPF2 (Region IV/V) | 10.5 / 8.8 |
| Voltage | 208-230V / 60Hz |
| Breaker Needed | 30A (double-pole) |
| Number of Zones | 3 |
| Refrigerant Type | R454B (pre-charged) |
| Indoor Units | 2× 9K + 1× 18K wall-mount units |
| Linesets | Sold separately - 16 to 75 ft per zone |
| Operating Temperature | -13°F to 131°F |
| Sound Level (per unit) | 30–44 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 |
INDOOR UNIT
| Part Number | zdiy-mk1-9I |
| Net Dimensions (WxDxH) | 36-1/2" x 7-5/8" x 12" |
| Carton Dimensions (WxDxH) | 39" x 10-1/2" x 15" |
| Net / Gross Weight | 23.1 / 30.9 lbs |
OUTDOOR UNIT
| Part Number | zdiy-mk1-18I |
| 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) | 32-7/8" x 13" x 22-5/8" |
| Net / Gross Weight | 93.7 / 102.5 lbs |
Zone Air® Product Series
DIY Wall Mounted Series
Zone Air® wall-mounted ductless mini split systems deliver powerful heating and cooling with easy DIY installation. Each unit comes with a pre-charged R454b lineset — no vacuum pump, no contractor, no refrigerant handling. Variable-speed DC inverter technology provides quiet, efficient comfort while Wi-Fi connectivity lets you control your system from anywhere.
Quick-connect lineset installation
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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
Control From Anywhere
Wi-Fi Smart Control
Built-in WiFi lets you control your mini split from anywhere. Works with Google Assistant, Alexa, and Siri.
Advanced Features
Smart Climate Control
- ✓Independent dehumidification mode
- ✓24-hour programmable timer
- ✓Turbo mode for rapid cooling/heating
- ✓Auto mode with intelligent temperature control
- ✓ECO mode for energy savings
- ✓Smart sleep mode
Premium Components
- ✓High-efficiency rotary compressor
- ✓Premium indoor motor
- ✓5-speed variable 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
- ✓Emergency manual operation
- ✓Display on/off option
- ✓Temperature display toggle (°C/°F)
Easy Maintenance
- ✓Top-access washable filter
- ✓One-press unit detachment
- ✓Deep-clean air channels
- ✓High-temp self-cleaning
- ✓Quick PCB replacement design
- ✓Anti-cold wind protection
Operating Temperature Range
Indoor Temperature (Cooling)
62-89°F (17-31°C)
Indoor Temperature (Heating)
32-86°F
Outdoor Temperature (Cooling)
5-131°F (-15 to 55°C)
Outdoor Temperature (Heating)
-13 to 86°F (-25 to 30°C)
Frequently Asked Questions
Do I need an HVAC technician to install this?
No! Our wall-mounted systems are designed for complete DIY installation. The pre-charged lineset means no vacuum pump or refrigerant handling is needed. Most homeowners complete the install in 2-4 hours with basic tools.
What electrical work is needed?
This unit requires a dedicated 208-230V circuit. If you don't already have a 230V outlet near the outdoor unit location, you may need an electrician to run one.
Is a lineset included?
No — this system is sold without one, which is why it is priced $230 per zone below a lineset-inclusive system. Add the run you actually need right on this page: $229.99 up to 16 ft, $329.99 up to 25 ft, $429.99 up to 35 ft, and $529.99 up to 50 ft, or any exact length in between (we cut to length at no extra charge). Every length ships pre-charged with R454B — no vacuum pump and no refrigerant handling. Already have a compatible pre-charged quick-connect line? Leave it off and order the system on its own.
Does this unit heat and cool?
Yes! This is a heat pump system that provides both heating and cooling year-round. It can heat effectively down to Independent zone control outdoor temperature and cool in temperatures up to 122°F.
What warranty is included?
All Zone Air systems come with a 7-year compressor warranty and 5-year parts warranty for the original purchaser. DIY installation does not void coverage. We also offer live technical support (7AM–7PM MST) and 30-day returns on uninstalled systems.