Can I really install this without an HVAC technician?

Yes, that is the point of the Quick Connect line sets. They come pre-charged, so you connect them hand-tight and torque to spec instead of brazing and pulling a vacuum. You still need to mount the condenser and three air handlers and route the lines.

How much space does each 6K air handler cover?

Roughly 200 square feet per zone, so about 600 square feet total across three rooms. Rooms with heavy sun or poor insulation will need more capacity.

Are line sets included?

No. You choose a length for each of the three air handlers and buy them separately. Each set includes the communication wire, wall sleeve, drain extension and UV-resistant wrap.

Does it heat as well as it cools?

It is a heat pump, so it runs in reverse to pull heat from outdoor air. Output drops in very cold weather, so check the rated heating range for your climate before relying on it as a primary heat source.

What controls does it offer?

A smartphone app with Alexa and Google Assistant support, plus a remote per air handler. The Follow Me mode uses the remote's sensor to regulate temperature where you are sitting.

What warranty comes with it?

Seven years on the compressor and five years on parts from MRCOOL. Register the system and keep your install records, since coverage can depend on proper setup.

What do buyers say about the MRCOOL DIY 3-Zone 18K BTU 24 SEER2 Mini Split 6K + 6K + 6K?

Buyers like: Easy, straightforward DIY installation; Everything needed was provided; Works incredibly well. Common complaints: WiFi dongle on one unit did not work.

Where can I buy the MRCOOL DIY 3-Zone 18K BTU 24 SEER2 Mini Split 6K + 6K + 6K?

2 stores we checked sell it, including eBay, Chill Mini Splits.

MRCOOL DIY 3-Zone 18K BTU 24 SEER2 Price History: Lowest $3,681.00

Q: Where is the MRCOOL DIY 3-Zone 18K BTU 24 SEER2 Mini Split 6K + 6K + 6K cheapest?

At Chill Mini Splits, for $3,681.00, as of our latest check.

What reviewers say

Buyers describe the install as easy and straightforward, with everything needed in the box, and say the system works very well. The recurring complaint is a WiFi dongle that did not work on one unit.

What people mention

InstallationPraisedBuyers say the Quick Connect setup is easy and needs no technician.
Kit contentsPraisedOwners report everything needed was provided in the box.
PerformancePraisedBuyers say the system works incredibly well for heating and cooling.
WiFi dongleCriticisedAt least one buyer had a WiFi dongle that did not work.

From Chill Mini Splits

3-zone ductless mini-split air conditioner and heat pump, 18,000 BTU total (6K + 6K + 6K)
24 SEER2 (23.9) rating with energy-efficient DC inverter
DIY installation with pre-charged Quick Connect line sets — no HVAC technician needed
Smartphone app controls with Google Assistant and Amazon Alexa support
Follow Me remote tracks the air temperature around you
Gold Fin condenser and eco-safe R-454B refrigerant

Guarantee: 7-year compressor and 5-year parts manufacturer warranty; Limited Lifetime Replacement warranty with enrollment in the MRCOOL Care Program.
Shipping: Free delivery; pre-order estimated shipping 2–4 weeks.
In the box: 1x MRCOOL DIY 5th Gen Multi-Zone Condenser 18,000 BTU (3 Zone, 23.9 SEER2): pre-charged condenser, mounting feet, install manual, 3x MRCOOL DIY 5th Generation Wall Mount Air Handler 6,000 BTU: air handler, mounting plate and wall template, remote with batteries, washable filter, drain hose, Line sets (choose length above, sold separately): pre-charged quick-connect line set, communication wire, wall sleeve, drain line extension, UV-resistant wrap

About the MRCOOL DIY 3-Zone 18K BTU 24 SEER2 Mini Split 6K + 6K + 6K

This is a three-zone ductless mini split heat pump with one outdoor condenser and three 6,000 BTU wall-mounted air handlers, for 18,000 BTU in total. It heats and cools, and in heating mode it runs in reverse to pull heat in from outdoors. Each air handler covers approximately 200 square feet.

The system is designed for DIY installation without special training or expensive specialty tools. It uses MRCOOL's pre-charged Quick Connect line sets, so no HVAC technician is needed to complete the install. Line sets are sold separately, and a length is chosen for each air handler.

The condenser has a DC inverter and is rated 24 SEER2 (23.9). It has a Gold Fin coating and uses R-454B refrigerant. The system can be controlled with a smartphone app and works with Google Assistant and Amazon Alexa. The Follow Me remote tracks the air temperature around the user. It comes with a 7-year compressor warranty and a 5-year parts warranty from the manufacturer.

Type: 3-zone ductless mini split heat pump
Capacity: 18,000 BTU total (6K + 6K + 6K)
Efficiency: 24 SEER2 (23.9), DC inverter
Coverage: Approx. 200 sq. ft. per air handler
Refrigerant: R-454B
Controls: Smartphone app, Google Assistant, Amazon Alexa, Follow Me remote
Warranty: 7-year compressor, 5-year parts
In the box: 1 pre-charged condenser with mounting feet and install manual
Air handlers: 3 units, each with mounting plate, wall template, remote with batteries, washable filter and drain hose
Line sets: Sold separately; include communication wire, wall sleeve, drain line extension and UV-resistant wrap