Skip to content
LOWEST PRICES GUARANTEED | NO SALES TAX | SPEAK WITH AN EXPERT: (916)-999-9937
Lowest Prices Guaranteed | SPEAK WITH AN EXPERT: (916)-999-9937
MRCOOL DIY 5th Gen 3-Zone 33,000 BTU Ductless Mini Split Air Conditioner & Heat Pump (9K+12K+12K) (DIY3-B-27HP)

MRCOOL DIY 5th Gen 3-Zone 33,000 BTU Ductless Mini Split Air Conditioner & Heat Pump (9K+12K+12K) (DIY3-B-27HP)

by MRCOOL
SKU DIY3-B-27HP091212
Save $420.80 Save $420.80
$4,430.80
$4,430.80 - $4,430.80
$4,430.80
$4,010.00
$4,010.00 - $4,010.00
$4,010.00
🚚 Fast Delivery Times

💰 Lowest Price Guaranteed

🛡️Premium Authorized MRCOOL Dealer - Warranty Included

🧑🏻‍💼Post-Purchase Lifetime Customer Support

❓Questions? Talk to Experts (916)-999-9937

MRCOOL DIY 5th Gen 3-Zone 33,000 BTU Ductless Mini Split Air Conditioner & Heat Pump (9K+12K+12K) (DIY3-B-27HP)

Take control of your comfort with the MRCOOL DIY 5th Gen Multi-Zone Mini Split System—the simplest, most affordable way to enjoy powerful, energy-efficient heating and cooling without hiring a professional.

Three Rooms, Perfect Comfort

Easily heat or cool three separate spaces—350 sq. ft., 500 sq. ft., and 500 sq. ft.—each with its own independent temperature control for personalized comfort in every room.

Truly DIY-Friendly

Skip the costly installation fees. No HVAC license, no specialized tools—if you can use basic hand tools, you can install this system yourself.

No-Hassle Setup

Featuring pre-charged Quick-Connect® line sets, you won’t have to deal with refrigerant handling or vacuuming. Just connect the components and enjoy instant comfort.

Year-Round Savings

With up to 23.0 SEER2 cooling efficiency and 9.5 HSPF2-4 heating performance, this system offers impressive energy savings all year long.

Built for Every Season

Stay warm even in harsh winter conditions—the system provides reliable heating down to -13°F.

Strong Warranty Protection

Backed by a 7-Year Compressor Replacement Warranty and 5-Year Parts Coverage for long-lasting peace of mind.

From hot summer days to freezing winter nights, the MRCOOL DIY Mini Split delivers dependable comfort while keeping energy costs low. Smart. Simple. Affordable.

WHAT YOU GET:

  • OUTDOOR UNIT (27K) x 1

MRCOOL DIY® 5th Gen 27,000 BTU 4-Zone Multi-Zone Mini Split Condenser 230V (DIY-MULTI4-27HP230D-O) 

  • INDOOR UNIT (9K) x 1

MRCOOL DIY® 5th Gen 9,000 BTU Multi-Zone Mini Split Air Handler 230V (DIY-09-HP-WMAH-230D25-O)

  • INDOOR UNIT (12K) x 2

MRCOOL DIY® 5th Gen 12,000 BTU Multi-Zone Mini Split Air Handler 230V (DIY-12-HP-WMAH-230D25-O)

    • REMOTE CONTROL x 3

    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: 33,000 BTU
    Zone 1: 9,000 BTU
    Zone 2: 12,000 BTU
    Zone 3: 12,000 BTU
    Coverage Area Total: 1,350 sq. ft.
    Zone 1: 350 sq. ft.
    Zone 2: 500 sq. ft.
    Zone 3: 500 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 (9K) x 1
    Model DIY-09-HP-WMAH-230D25-O
    Dimensions 31.57" W x 7.44" D x 11.69" H
    Mounting Type Wall
    Cooling Capacity 9,000 BTU
    Heating Capacity 9,000 BTU
    Coverage Area 151 to 350 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 (12K) x 2
    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

    GUIDE:

    Installation Manual

    MRCOOL 5th Gen Brochure

    Energy Guide

    ARHI Certificate

    Remote Control Manual

    Warranty

    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.