Enjoy personalized comfort in two separate areas of your home with the MRCOOL DIY Multi-Zone 27,000 BTU Ductless Heat Pump System. Designed for homeowners who want professional-level performance without the installation expense, this system allows you to heat and cool two zones using a simple DIY-friendly setup.
With a powerful 27,000 BTU outdoor condenser, this system pairs with two indoor air handlers: a 6,000 BTU unit ideal for spaces up to approximately 200 square feet and a 12,000 BTU unit designed for rooms up to approximately 600 square feet. The included pre-charged Quick Connect line sets make installation straightforward, helping homeowners avoid costly labor charges and specialized HVAC tools.
Because it features heat pump technology, this system provides year-round comfort. In cooling mode, it removes heat from inside your home, and during colder weather, it reverses operation to pull heat from the outdoor air and deliver it indoors.
Includes 6,000 BTU + 12,000 BTU Air Handlers
Comfort for Two Rooms. No Contractor Required.
Looking for an easy way to heat and cool two separate spaces?
The MRCOOL DIY® Multi-Zone 27,000 BTU System delivers year-round comfort while helping homeowners save thousands on installation costs. Thanks to the pre-charged Quick Connect® line sets, you can install this system yourself without specialized HVAC tools or professional training.
Whether you're upgrading bedrooms, home offices, additions, garages, or other living spaces, this system provides customized comfort exactly where you need it.
What's Included?
✅ 27,000 BTU Multi-Zone Outdoor Condenser
✅ 6,000 BTU Wall-Mounted Air Handler
Ideal for rooms up to approximately 200 sq. ft.
✅ 12,000 BTU Wall-Mounted Air Handler
Ideal for rooms up to approximately 600 sq. ft.
✅ Pre-Charged DIY® Quick Connect Line Sets
✅ Wireless Remote Controls
Year-Round Heating & Cooling
Stay comfortable in every season.
During summer, the system efficiently removes heat from your home.
When temperatures drop, the heat pump reverses operation and pulls heat from the outdoor air to warm your living spaces.
✔ Cool in the summer
✔ Heat in the winter
✔ One system for all seasons
Why Homeowners Love the MRCOOL DIY® Series
Easy DIY Installation
Skip the expensive installation bills.
The pre-charged Quick Connect® line sets are designed for fast, straightforward installation.
Independent Zone Control
Set different temperatures in each room for personalized comfort.
High Energy Efficiency
The advanced DC inverter technology helps reduce energy consumption while maintaining consistent temperatures.
Smart Control Anywhere
Adjust settings, monitor performance, and control your system directly from your smartphone.
Built for Long-Term Reliability
The Gold Fin® condenser coating helps protect against corrosion and extends system life.
Emergency Cooling Function
Need to test the system after installation or perform maintenance?
The manual operation button located beneath the front panel allows temporary cooling operation when needed.
Warranty Protection
Enjoy added peace of mind with industry-leading coverage:
✔ 7-Year Compressor Warranty
✔ Optional Limited Lifetime Compressor Warranty
✔ 5-Year Parts Warranty
Key Features
⭐ DIY® Installation
⭐ Pre-Charged Quick Connect® Line Sets
⭐ Multi-Zone Comfort
⭐ DC Inverter Technology
⭐ 100% Sealed Refrigerant System
⭐ Gold Fin® Corrosion Protection
⭐ Eco-Friendly R-454B Refrigerant
⭐ Smartphone App Control
⭐ Follow Me® Temperature Sensing
⭐ Low Ambient Cooling
⭐ Lifetime Technical Support
Perfect For
✔ Bedrooms
✔ Home Offices
✔ Bonus Rooms
✔ Garages
✔ Workshops
✔ Additions
✔ Guest Suites
✔ Small Apartments
Experience professional-grade comfort with a system designed specifically for homeowners who want a simpler, more affordable way to heat and cool multiple rooms.
Specifications
| Specification |
Details |
| Brand |
MRCOOL® |
| Series |
DIY® 5th Generation Multi-Zone |
| Model Number |
DIY-MULTI4-27HP230D-O |
| GTIN |
840255587457 |
| UPC |
840255587457 |
Performance Specifications
| Specification |
Value |
|
⚡ SEER2 Rating
|
23 |
|
⚡ EER2 Rating
|
12 |
|
🔥 HSPF2-4
|
9.5 |
|
🔥 HSPF2-5
|
7 |
|
❄️ Cooling Capacity
|
26,000 BTU |
|
🔥 Heating Capacity
|
26,000 BTU |
|
📏 Tonnage
|
2.25 Tons |
|
🏠 Zone Capacity
|
Up to 4 Zones |
|
🔊 Sound Level
|
61 dBA |
Electrical Requirements
| Specification |
Value |
|
⚡ Voltage
|
208/230V |
|
⚡ Phase
|
Single Phase |
|
⚡ Frequency
|
60 Hz |
|
⚡ Maximum Fuse Breaker
|
25 Amps |
|
⚡ Minimum Circuit Ampacity
|
23 Amps |
Refrigerant & Compressor
| Specification |
Value |
|
🌎 Refrigerant Type
|
R-454B |
|
🌎 Refrigerant Charge
|
84.66 oz |
|
⚙️ Compressor Type
|
Rotary |
|
⚙️ Inverter Technology
|
DC Inverter |
Unit Dimensions
| Measurement |
Size |
| Depth |
16.14" |
| Height |
31.89" |
| Width |
37.24" |
| Net Weight |
140.21 lbs |
Shipping Dimensions
| Measurement |
Size |
| Shipping Depth |
19.69" |
| Shipping Height |
34.84" |
| Shipping Width |
42.91" |
| Shipping Weight |
151.02 lbs |
Information & Guides
Installation Manual
Brochure
Service Manual
Remote Manual
Accessory Manual
Warranty
AHRI Cert
Energy Guide
