Customize comfort in every room with the MRCOOL DIY 5th Gen 36 K BTU 4-Zone Ductless Mini Split System with Ceiling Cassettes (6 K + 12 K + 12 K + 12 K).
Designed for easy, do-it-yourself installation, this system efficiently heats and cools four separate zones—no HVAC contractor required.
Zone coverage:
-
1 × 6 K BTU cassette (~ 250 sq ft)
-
3 × 12 K BTU cassettes (~ 500 sq ft each)
All powered by a 36 K BTU 23 SEER2 inverter condenser, giving you reliable, energy-smart comfort all year long.
⚙️ Key Features
✅ DIY Installation Made Easy
Pre-charged Quick Connect® Line Sets with eco-safe R-454B refrigerant eliminate vacuum pumps and specialized tools. Simply connect, tighten, and power up.
🌡️ Smart Climate Control
Monitor and manage your home from anywhere using the MRCOOL SmartHVAC App, or control hands-free with Alexa and Google Home.
💨 Discreet Ceiling Cassettes
Low-profile design fits between 16-inch joists for quiet, even airflow and a sleek, modern appearance.
♻️ Energy-Efficient and Eco-Friendly
Advanced DC inverter technology paired with R-454B refrigerant delivers exceptional efficiency while lowering environmental impact.
🔒 Durable and Protected
Backed by a 7-Year Compressor Warranty, 5-Year Parts Warranty, and optional Lifetime Coverage through MRCOOL Care. Gold Fin® coating prevents corrosion and extends system life.
💡 Why Homeowners Choose This System
-
Perfect for homes up to ≈ 1,400 sq ft
-
Quiet, discreet design for multi-room comfort
-
Auto, Sleep & Dry modes for custom climate control
-
Wi-Fi & voice integration for smart living
-
Filter reminders and self-diagnostics for easy maintenance
📦 What’s Included
-
(1) 36 K BTU MRCOOL DIY 5th Gen Condenser
-
(1) 6 K BTU Ceiling Cassette
-
(3) 12 K BTU Ceiling Cassettes
-
Pre-charged DIY Quick Connect Line Sets & Couplers
-
Remotes & Installation Manuals
⚡ Technical Highlights
| Specification |
Value |
| Cooling Capacity |
34 000 BTU |
| Heating Capacity |
36 000 BTU |
| Voltage |
208/230 V Single Phase |
| Refrigerant |
R-454B |
| SEER2 / HSPF2-4 |
23 / 9.9 |
| Zones Supported |
4 |
| Compressor Type |
DC Inverter Rotary |
| Noise Level |
64 dBA (Max) |
| Connectivity |
Wi-Fi, Alexa, Google Home |
| Certifications |
AHRI, ETL, Energy Star Certified |
💬 Customer Benefits
-
DIY install saves thousands on HVAC labor
-
Free shipping & 0 % Affirm financing
-
Lifetime technical support from MRCOOL
-
Year-round comfort with smart control
🏁 The DIY Comfort Solution
The MRCOOL DIY 5th Gen 36 K BTU 4-Zone Mini Split (6 K + 12 K + 12 K + 12 K) delivers powerful, efficient heating and cooling for four rooms with a straightforward, DIY-friendly setup.
Enjoy professional-grade comfort, energy savings, and modern smart features without hiring a contractor.
Simple to install. Smart to own. Only from MRCOOL DIY Direct.