MRCOOL DIY 5th Gen 2-Zone 30,000 BTU Ductless Mini Split Air Conditioner & Heat Pump (12K+18K) (DIY2-B-27HP1218)
Take control of your home’s comfort with the MRCOOL DIY 5th Gen Multi-Zone Mini Split System — the easiest and most affordable way to enjoy powerful, energy-efficient heating and cooling without hiring a professional.
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Perfect Comfort for Two Rooms: Heat or cool two spaces up to 500 sq. ft. and 750 sq. ft. each, with independent temperature control for personalized comfort in every room.
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Truly DIY-Friendly: Skip costly installations — no HVAC license or special tools required. If you can use basic hand tools, you can install it yourself.
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Year-Round Energy Savings: With up to 23.0 SEER2 cooling efficiency and 9.5 HSPF2-4 heating performance, this system provides consistent comfort while helping you save on energy costs.
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Built for Every Season: Stay warm even in extreme winter conditions — reliable heating works down to -13°F.
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Strong Warranty Protection: Includes a 7-Year Compressor Replacement and 5-Year Parts Coverage for long-term peace of mind.
Whether it’s scorching summer days or freezing winter nights, the MRCOOL DIY Mini Split keeps your home comfortable and your energy bills low. Smart. Simple. Affordable.
Note: When multiple air handlers are in use at the same time, total BTU output is limited by the condenser’s capacity — up to 27,000 BTU for this system.
WHAT YOU GET:
MRCOOL DIY® 5th Gen 27,000 BTU 4-Zone Multi-Zone Mini Split Condenser 230V (DIY-MULTI4-27HP230D-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)
NOTE: Line sets are not included. Please choose your line set above.
If all air handlers are run simultaneously, their combined BTU output will not exceed the BTU rating of the condenser.
SPECIFICATIONS:
| SYSTEM OVERVIEW |
| System Type |
Ductless Mini Split Air Conditioner & Heat Pump |
| Zones |
2 |
| Capacity |
Total: 30,000 BTU
Zone 1: 12,000 BTU
Zone 2: 18,000 BTU
|
| Coverage Area |
Total: 1,250 sq. ft.
Zone 1: 500 sq. ft.
Zone 2: 750 sq. ft.
|
| Refrigerant |
R-454B |
| Line Sets Included |
None - Choose Your Line Sets Above! |
| Warranty |
7 Years Compressor
5 Years Parts
|
| OUTDOOR UNIT (27K) x 1 |
| Model |
DIY-MULTI4-27HP230D-O |
| Dimensions |
37.24" W x 16.14" D x 31.89" H |
| Cooling Capacity |
26,000 BTU |
| SEER2 |
23.0 |
| EER2 |
12.0 |
| Heating Capacity |
26,000 BTU |
| HSPF2-4 |
9.5 |
| HSPF2-5 |
7.0 |
| Outdoor Noise Level |
61.0 dB(A) |
| Outdoor Operating Temperature |
Cooling: -13°F – 122°F
Heating: -13°F – 75°F
|
| Voltage |
208–230V |
| Phase |
1 |
| Cycle |
60Hz |
| Min Circuit Ampacity |
23.0A |
| Max Fuse Breaker |
25.0A |
| Weight |
140.2 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 |
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.
