Quick answers to questions about ordering, compatibility, and installation.
Take full control of comfort in every room with the MRCOOL DIY 5th Gen 36 K BTU 5-Zone Ductless Mini Split System with Ceiling Cassettes (6 K + 9 K + 9 K + 9 K + 9 K).
Designed for homeowners who want professional-grade HVAC without hiring a contractor, this system delivers quiet, efficient heating and cooling across five zones — all with simple DIY installation.
The system includes:
One 6 K BTU cassette (~250 sq ft)
Four 9 K BTU cassettes (~375 sq ft each)
All powered by a 36 K BTU 23 SEER2 condenser engineered for year-round comfort.
Patented Quick Connect® Line Sets come pre-charged with eco-friendly R-454B refrigerant, so you can install confidently without special tools or HVAC experience.
Use the MRCOOL SmartHVAC App or voice assistants like Amazon Alexa and Google Home to manage each zone, set schedules, and monitor performance.
Recessed, discreet air handlers fit between standard 16-inch joists, providing powerful airflow and whisper-quiet operation — ideal for both retrofits and new builds.
High-efficiency DC inverter technology and the new R-454B refrigerant reduce environmental impact while delivering lower operating costs.
7-Year Compressor Warranty
5-Year Parts Warranty
Optional Lifetime Coverage via the MRCOOL Care Program
Gold Fin® coating protects the condenser from corrosion and coastal wear.
Heat & cool up to 1,500 sq ft across five zones
Compatible with both ceiling and wall air handlers
Auto, Sleep, Dehumidify modes for precision comfort
Wi-Fi and app integration for real-time control
Quiet mode and filter reminders for easy maintenance
(1) 36 K BTU MRCOOL DIY 5th Gen Condenser
(1) 6 K BTU Ceiling Cassette
(4) 9 K BTU Ceiling Cassettes
Pre-charged DIY Quick Connect Line Sets & Couplers
Remote Controls & Installation Manuals
| Specification | Value |
|---|---|
| Cooling Capacity | 34 000 BTU |
| Heating Capacity | 36 000 BTU |
| Voltage | 208/230 V Single Phase |
| Refrigerant | R-454B (Eco-Safe) |
| SEER2 / HSPF2-4 | 23 / 9.9 |
| Zones Supported | 5 Indoor Units |
| Compressor Type | DC Inverter Rotary |
| Noise Level | 64 dBA (Max) |
| Connectivity | Wi-Fi, SmartHVAC App, Alexa, Google Home |
| Certifications | ETL, AHRI, Energy Star Certified |
Multi-room zoning for balanced climate control
Auto mode adjusts cooling/heating as needed
Dehumidify mode for humid seasons
Sleep mode for energy savings overnight
Quiet operation and filter alerts for low maintenance
Install it yourself and save thousands on labor
0 % financing available through Affirm
Free shipping on all orders
Lifetime technical support from MRCOOL
The MRCOOL DIY 5th Gen 36 K BTU 5-Zone Mini Split with Ceiling Cassettes (6 K + 9 K + 9 K + 9 K + 9 K) delivers unmatched flexibility, efficiency, and style.
Enjoy year-round comfort, smart control, and easy installation — without the contractor markup.
Your comfort, your way — powered by MRCOOL DIY Direct.
Quick answers to questions about ordering, compatibility, and installation.
Yes. Freedom HVAC Supply sells HVAC equipment and parts to contractors, property owners, and qualified DIY installers. Some products may require professional installation based on local codes.
Product pages include specifications and compatibility details. If you’re unsure, our team can help verify fit before you order.
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Some HVAC equipment must be installed by a licensed professional to meet code requirements or warranty terms. Always review manufacturer guidelines.
Yes. Our support team can assist with product selection based on your application, space, and installation needs.
Manufacturer installation guides and documentation are included or available upon request for most products.
Most HVAC equipment includes a manufacturer warranty when installed according to guidelines. Warranty terms vary by brand and product.
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Larger HVAC equipment ships via freight and should be inspected upon delivery. Delivery details are provided during checkout.
Get help with ordering, compatibility, or installation questions.
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