HOT ! MRCOOL DIY 5th Gen Multi‑Zone 3‑Zone 36,000 BTU 23 SEER2 (6K + 9K + 9K) Ductless Mini‑Split Air Conditioner & Heat Pump DIYM336HPW03D21

MRCOOL DIY 5th Gen Multi‑Zone 3‑Zone 36,000 BTU 23 SEER2 (6K + 9K + 9K) Ductless Mini‑Split Air Conditioner & Heat Pump DIYM336HPW03D21

The MRCOOL DIY 5th Gen Multi‑Zone 3‑Zone 36,000 BTU 23 SEER2 Mini‑Split Air Conditioner & Heat Pump is engineered for homeowners who want exceptional comfort with true DIY simplicity. Designed to heat and cool three separate zones independently, it includes one 6,000 BTU indoor air handler and two 9,000 BTU indoor air handlers, making it an ideal solution for bedrooms, offices, guest spaces, finished basements, and other living areas. With a total system capacity of 36,000 BTU and a high 23 SEER2 efficiency rating, this system delivers powerful year‑round performance.

Installation is streamlined with MRCOOL’s QuickConnect® technology and pre‑charged line sets, eliminating the need for vacuuming, refrigerant charging, or specialized HVAC tools — meaning you can save on costly professional installation. Each zone operates independently, so you control comfort where it matters most while reducing energy costs by conditioning only occupied areas.

Built with advanced features like a DC inverter compressor, Gold Fin® anti‑corrosion coating, “Follow Me®” remote temperature sensing, and full Smart HVAC app integration, this system offers quiet and durable performance. Voice control compatibility with Alexa® and Google Home® further enhances convenience.

Included in the bundle are wireless remotes, mounting hardware, DIYPRO® communication cable, and everything needed for a complete multi‑zone installation — making this one of the most capable and user‑friendly DIY HVAC systems available.

Features

• 36,000 BTU total system capacity


• 3 independently controlled comfort zones


• (1) 6K + (2) 9K BTU wall-mounted air handlers


• 23 SEER2 high-efficiency rating


• DC inverter variable-speed compressor


• DIY® QuickConnect® pre-charged line sets


• 25-ft line-set reach included


• DIYPRO® cable (no conduit required)


• Gold Fin® anti-corrosion coating


• Follow Me® remote-based temperature control


• MRCOOL® Smart HVAC Controller® App


• Alexa® & Google Home® compatibility


• ENERGY STAR® & AHRI certified

Specifications

What’s Included 

• ✔ MRCOOL® DIY® 36,000 BTU Multi-Zone Outdoor Condenser


• ✔ (1) 6,000 BTU Wall-Mounted Indoor Air Handler


• ✔ (2) 9,000 BTU Wall-Mounted Indoor Air Handlers


• ✔ (3) 25-ft DIY® QuickConnect® Line Sets (1/4 × 3/8)


• ✔ DIYPRO® communication cable


• ✔ Wireless remotes for each indoor unit


• ✔ Mounting hardware & installation manuals

Frequently Asked Questions (FAQ\'s)

Can each room be controlled independently?

Yes. Each indoor unit has its own thermostat and remote.

Is professional HVAC installation required?

No. This system is engineered specifically for DIY installation.

Does it support Wi-Fi and voice control?

Yes. Works with the MRCOOL® Smart HVAC Controller® App, Alexa®, and Google Home®.

Why choose 25-ft line sets?

25-ft line sets provide added flexibility for longer distances between the condenser and indoor units.