MRCOOL® 18k DIY 5th Generation Bundle - includes Condenser, Air Handler, DIY® Quick Connect® Line Set, DIYPRO® Cable, and Remote - 230v
MRCOOL® 18k DIY 5th Generation Bundle - includes Condenser, Air Handler, DIY® Quick Connect® Line Set, DIYPRO® Cable, and Remote - 230v - Image 2
MRCOOL® 18k DIY 5th Generation Bundle - includes Condenser, Air Handler, DIY® Quick Connect® Line Set, DIYPRO® Cable, and Remote - 230v - Image 4
MRCOOL® DIY® 5th Gen · Complete System

18K BTU Complete System

MRCOOL® 18k DIY 5th Generation Bundle - includes Condenser, Air Handler, DIY® Quick Connect® Line Set, DIYPRO® Cable, and Remote - 230v

Model: DIY-18-HP-WM-230D25-O

$2,609.00$2,909.00Sale · Save $300Free shipping
18KBTU
230VPower
500–750Sq 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 18K 230V system is a good fit for a living room, finished basement, or two-car garage. It needs a dedicated 230V circuit.

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 18,000 cooling / 18,000 heating BTU
Voltage 230V
SEER2 Up to 22.5
Coverage About 500–750 sq ft
Line set 1/4 × 1/2 in, 25 ft included
Refrigerant R-454B
System model DIY-18-HP-WM-230D25-O
Indoor model DIY-18-HP-WMAH-230D25-O
Outdoor model DIY-18-HP-C-230D25-O
UPC 840255588553

Common questions

Will an 18K handle a two-car garage?
That's a common fit. Go up a size if the garage is uninsulated or has high ceilings.

What breaker does it need?
MRCOOL lists 18 A minimum circuit ampacity and a 20 A maximum breaker on a dedicated 230V circuit. A qualified electrician should size the wire.

How far can the indoor and outdoor units be apart?
The line can run up to 75 ft with up to 65.6 ft of height difference, per MRCOOL's manual. The bundle includes 25 ft.

Can I extend the line set?
Yes, with a 1/4 × 1/2 in extension and the 18K coupler kit.

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″ × 1/2″ line sets 18K · 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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