MRCOOL® 12k DIY 5th Generation Mini-Split Condenser 115v
MRCOOL® 12k DIY 5th Generation Mini-Split Condenser 115v - Image 2
MRCOOL® 12k DIY 5th Generation Mini-Split Condenser 115v - Image 3
MRCOOL® 12k DIY 5th Generation Mini-Split Condenser 115v - Image 4
MRCOOL® DIY® 5th Gen · Outdoor Condenser

12K BTU Outdoor Condenser

MRCOOL® 12k DIY 5th Generation Mini-Split Condenser 115v

Model: DIY-12-HP-C-115D25-O

$1,591.00Free shipping
12KBTU
115VPower
350–500Sq ft
23.5SEER
  • Free shipping to the lower 48 · tracking emailed
  • 7-yr compressor / 5-yr parts warranty
  • No vacuum pump or special tools
  • Real install help from people who've done it
Overview

Installing your own HVAC system might sound overwhelming, but the 5th Generation MRCOOL® DIY® 12k BTU 23.5 SEER Ductless Heat Pump Single Zone Mini Split Condenser makes it simple and achievable. Designed specifically for easy installation, this system can efficiently heat or cool areas between 350 and 500 square feet—no professional tools or HVAC experience required.
Thanks to the 25-foot pre-charged Quick Connect® line set filled with R-454B refrigerant, setup is straightforward and doesn’t require vacuuming. It’s a cost-saving, do-it-yourself solution engineered for safety and simplicity.
You can control the system in multiple ways: use the included remote, the SmartHVAC app on iOS or Android, or voice commands via Amazon Alexa and Google Assistant. The built-in Follow Me® feature detects the temperature near the remote, adjusting output to match your location. For coastal homes, the Gold Fin® condenser coating provides rust-resistant protection, ensuring the system performs well over time.
Comfort and energy savings are built in, with modes like Auto, Sleep, and Timer, plus auto-restart after power outages. Once installed, you'll enjoy a full suite of smart and efficient features.
This model also comes with a base warranty that includes 7-year compressor/5-year parts coverage, along with eligibility for the MRCOOL® Care Program. With its advanced tech and user-friendly design, this unit offers both flexibility and long-term peace of mind.

Shipping & returns

Free shipping to the lower 48. Orders are processed within 1–2 business days and we email tracking as soon as your order ships. See our Shipping Policy and Returns & Refunds.

Other sizes

Every single-zone condenser size

9K 115V $1,584 12K 115V $1,591 18K 230V $1,978 24K 230V $2,364 36K 230V $2,488
Works with

It all mixes and matches.

Every unit here is MRCOOL® DIY® 5th Gen. These are the pieces that pair with this one.

Indoor air handlers
12K wall-mount · 115V $768
Longer line runs
1/4″ × 3/8″ line sets 6K · 9K · 12K · 16–50 ft

This unit includes a 25 ft pre-charged line set. Only need more? Add an extension and a coupler kit.

Before you buy
What size do I need?Sizing guide Breaker, wire & voltageElectrical guide Line set lengths & couplersLine set guide How the install worksInstall guide
How it goes in

Four steps. One weekend.

  1. Hang the air handler

    Level the wall plate, drill the pass-through, and hang the indoor unit.

    Indoor

  2. Set the condenser

    Place the outdoor unit on a pad or wall bracket with clearance to breathe.

    Outdoor

  3. Connect the lines

    Run the pre-charged Quick Connect® line set and tighten both ends with two wrenches.

    Lines

  4. Power up

    Hook up the dedicated circuit, pair the SmartHVAC app, done.

    Power

Electrical hookup must follow local code.

Complete the install

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