Take Control of Your Comfort — Effortlessly. The MRCOOL DIY® 5th Gen Multi-Zone Mini Split System gives you powerful heating and cooling without the need for a professional installation. It's the simplest and most affordable way to upgrade your comfort year-round.
Comfort for Three Rooms — Your Way
Heat or cool three separate spaces — approximately:
-
500 sq. ft.
-
750 sq. ft.
-
1,000 sq. ft.
Each zone has independent temperature control, so everyone gets their ideal setting.
Truly DIY-Friendly
No need to hire an HVAC technician. If you can use basic hand tools, you can install it yourself:
Hassle-Free Setup
This system includes pre-charged Quick-Connect® line sets, eliminating refrigerant handling or vacuuming.
Just connect the lines and power it up — that’s it.
Energy-Saving Performance
Save all year with impressive efficiency:
-
Up to 22 SEER2 cooling
-
10.6 HSPF2-4 heating
Built for All Climates
Count on reliable performance even in extreme weather — heats effectively down to -13°F.
Peace of Mind Protection
Includes:
WHAT YOU GET:
MRCOOL DIY® 5th Gen 55,000 BTU 6-Zone Multi-Zone Mini Split Condenser 230V (DIY-MULTI6-55HP230D-O)
MRCOOL DIY® 5th Gen 12,000 BTU Multi-Zone Mini Split Air Handler 230V (DIY-12-HP-WMAH-230D25-O)
MRCOOL DIY® 5th Gen 18,000 BTU Multi-Zone Mini Split Air Handler 230V (DIY-18-HP-WMAH-230D25-O)
MRCOOL DIY® 5th Gen 24,000 BTU Multi-Zone Mini Split Air Handler 230V (DIY-24-HP-WMAH-230D25-O)
NOTE: Line sets are not included. Please choose your line set above.
SPECIFICATIONS:
| SYSTEM OVERVIEW |
| System Type |
Ductless Mini Split Air Conditioner & Heat Pump |
| Zones |
3 |
| Capacity |
Total: 54,000 BTU
Zone 1: 12,000 BTU
Zone 2: 18,000 BTU
Zone 3: 24,000 BTU
|
| Coverage Area |
Total: 2,250 sq. ft.
Zone 1: 500 sq. ft.
Zone 2: 750 sq. ft.
Zone 3: 1,000 sq. ft
|
| Refrigerant |
R-454B |
| Line Sets Included |
None - Choose Your Line Sets Above! |
| Warranty |
7 Years Compressor
5 Years Parts
|
| OUTDOOR UNIT (55K) x 1 |
| Model |
DIY-MULTI6-55HP230D-O |
| Dimensions |
37.48" W x 16.34" D x 52.48" H |
| Cooling Capacity |
47,000 BTU |
| SEER2 |
22.0 |
| EER2 |
12.0 |
| Heating Capacity |
55,000 BTU |
| HSPF2-4 |
10.6 |
| HSPF2-5 |
8.5 |
| Outdoor Noise Level |
64.0 dB(A) |
| Outdoor Operating Temperature |
Cooling: -22°F – 122°F
Heating: -22°F – 75°F
|
| Voltage |
208–230V |
| Phase |
1 |
| Cycle |
60Hz |
| Min Circuit Ampacity |
43.0A |
| Max Fuse Breaker |
45.0A |
| Weight |
245.81 lbs |
| Certifications |
ENERGY STAR Certified
AHRI Certified
UL Listed
ETL Listed
|
| INDOOR UNIT (12K) x 1 |
| Model |
DIY-12-HP-WMAH-230D25-O |
| Dimensions |
31.57" W x 7.44" D x 11.69" H |
| Mounting Type |
Wall |
| Cooling Capacity |
12,000 BTU |
| Heating Capacity |
12,000 BTU |
| Coverage Area |
351 to 500 sq. ft. |
| Liquid Line Size |
1/4" |
| Suction Line Size |
3/8" |
| Modes |
Auto Mode: Automatically selects heating or cooling based on the room's temperature.
Cool Mode: Lowers the room temperature to your desired setting.
Heat Mode: Raises the room temperature to your desired setting.
Fan-Only Mode: Circulates air without heating or cooling.
Dry Mode (Dehumidification): Reduces humidity levels in the room.
Sleep Mode: Gradually adjusts temperature settings for comfortable sleep and energy savings.
|
| Weight |
24.47 lbs |
| INDOOR UNIT (18K) x 1 |
| Model |
DIY-18-HP-WMAH-230D25-O |
| Dimensions |
42.52" W x 8.9" D x 13.19" H |
| Mounting Type |
Wall |
| Cooling Capacity |
18,000 BTU |
| Heating Capacity |
18,000 BTU |
| Coverage Area |
501 to 750 sq. ft. |
| Liquid Line Size |
1/4" |
| Suction Line Size |
1/2" |
| Modes |
Auto Mode: Automatically selects heating or cooling based on the room's temperature.
Cool Mode: Lowers the room temperature to your desired setting.
Heat Mode: Raises the room temperature to your desired setting.
Fan-Only Mode: Circulates air without heating or cooling.
Dry Mode (Dehumidification): Reduces humidity levels in the room.
Sleep Mode: Gradually adjusts temperature settings for comfortable sleep and energy savings.
|
| Weight |
35.49 lbs |
| INDOOR UNIT (24K) x 1 |
| Model |
DIY-24-HP-WMAH-230D25-O |
| Dimensions |
42.52" W x 8.9" D x 13.19" H |
| Mounting Type |
Wall |
| Cooling Capacity |
24,000 BTU |
| Heating Capacity |
24,000 BTU |
| Coverage Area |
751 to 1,000 sq. ft. |
| Liquid Line Size |
3/8" |
| Suction Line Size |
5/8" |
| Modes |
Auto Mode: Automatically selects heating or cooling based on the room's temperature.
Cool Mode: Lowers the room temperature to your desired setting.
Heat Mode: Raises the room temperature to your desired setting.
Fan-Only Mode: Circulates air without heating or cooling.
Dry Mode (Dehumidification): Reduces humidity levels in the room.
Sleep Mode: Gradually adjusts temperature settings for comfortable sleep and energy savings.
|
| Weight |
35.93 lbs |
GUIDE:
SHIPPING POLICY:
Free Curbside Delivery
MRCOOL orders include free curbside delivery via FedEx Ground, FedEx Freight, or the most trusted carrier available. Please note that delivery is to the curbside only - be sure to arrange for assistance if needed, as the carrier will not bring items inside your home.
Tracking & Delivery Scheduling
In most cases, you will receive tracking details 3-5 business days after you place your order. When the tracking number is sent, please allow 1-2 business days for the tracking number to populate details.
RETURN POLICY:
MRCOOL returns must be requested within 30 days of your delivery date. We are unable to process returns submitted after this period. Products must be unused, uninstalled, and in their original packaging, including the box and pallet, to qualify for a return.
Restocking Fee
Please note, a 35% restocking fee will be applied to all approved returns.
Non-Returnable Items
Accessories including lineguards, wall mounts, linesets, couplers, and similar items are not eligible for return.
