MRCOOL® 12k DIY 5th Generation Bundle - includes Condenser, Air Handler, DIY® Quick Connect® Line Set, DIYPRO® Cable, and Remote - 115v
MRCOOL® 12k DIY 5th Generation Bundle - includes Condenser, Air Handler, DIY® Quick Connect® Line Set, DIYPRO® Cable, and Remote - 115v - Image 2
MRCOOL® 12k DIY 5th Generation Bundle - includes Condenser, Air Handler, DIY® Quick Connect® Line Set, DIYPRO® Cable, and Remote - 115v - Image 4
MRCOOL® DIY® 5th Gen · Complete System

12K BTU Complete System

MRCOOL® 12k DIY 5th Generation Bundle - includes Condenser, Air Handler, DIY® Quick Connect® Line Set, DIYPRO® Cable, and Remote - 115v

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

$2,059.00$2,359.00Sale · Save $300Free shipping
12KBTU
115VPower
350–500Sq ft
In the box
  • Condenser
  • Air Handler
  • DIY® Quick Connect® Line Set — 25 ft, pre-charged
  • DIYPRO® Cable
  • Remote
  • 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

Who it's for: The 12K 115V system is a good fit for a primary bedroom, bonus room, or one-car garage. It runs on a dedicated 115V circuit, so it often works when a 230V breaker would mean a panel upgrade.

What's in the box

  • Outdoor condenser
  • Indoor wall-mount air handler
  • 25 ft Quick Connect® pre-charged line set
  • DIYPRO® cable
  • Remote and Wi-Fi smart controller kit

Key specs

Size 12,000 cooling / 12,000 heating BTU
Voltage 115V
SEER2 Up to 23.5
Coverage About 350–500 sq ft
Line set 1/4 × 3/8 in, 25 ft included
Refrigerant R-454B
System model DIY-12-HP-WM-115D25-O
Indoor model DIY-12-HP-WMAH-115D25-O
Outdoor model DIY-12-HP-C-115D25-O
UPC 840255588546

Common questions

Will a 12K heat a two-car garage?
A two-car garage is usually closer to the 18K range, especially if it's poorly insulated. Use the sizing guide or send us the dimensions.

What breaker does it need?
MRCOOL lists 18 A minimum circuit ampacity and a 20 A maximum breaker, on its own dedicated circuit. A qualified electrician should size the wire.

Can I plug it into an outlet?
No. It's 115V, but it's hardwired on a dedicated circuit with a disconnect.

Can I extend the line set?
Yes, up to MRCOOL's 75 ft maximum. Email us before ordering so we can match couplers to the 1/4 × 3/8 in line.

More help: sizing guide, electrical guide, line set guide.

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 complete single-zone system

9K 115V $2,029 12K 115V $2,059 18K 230V $2,609 24K 230V $3,029 36K 230V $3,469
Works with

It all mixes and matches.

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

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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