Can I really install this myself?

Yes. The Quick Connect line sets come pre-charged with R-454B refrigerant, so no brazing, vacuum pump or HVAC technician is needed. You still mount the condenser and three indoor heads and route the lines and drains.

How much space does it cover?

The 36,000 BTU condenser feeds three 12,000 BTU air handlers, each rated for about 550 square feet. That suits three rooms or one large open area split into zones.

Does it heat in cold weather?

It is a heat pump, so it runs in reverse to pull heat from outdoor air. Owners report it heating well through sub-zero Minnesota nights.

How many indoor units can the condenser support?

This condenser supports up to five indoor units, so you can add two more zones later. The larger 48,000 BTU model supports up to six.

Each zone comes with a remote, and the system works with the MRCOOL Smart Controller app, Amazon Alexa and Google Home.

What warranty comes with it?

A 7-year compressor warranty plus a limited lifetime compressor warranty, and 5 years on parts.

What do buyers say about the MRCOOL DIY 5th Gen 36,000 BTU 3-Zone Mini Split?

Rated 4.9 out of 5 from 273 ratings. Buyers like: Easy DIY install, done over a weekend with some planning; Quieter and more efficient than old units; Saves money versus professional HVAC quotes.

Where can I buy the MRCOOL DIY 5th Gen 36,000 BTU 3-Zone Mini Split?

7 stores we checked sell it, including Homery, Newegg, Sylvane, The Home Depot, Amazon.

MRCOOL DIY 5th Gen 36,000 BTU 3-Zone Mini Price History: $2,488.00

Q: Where is the MRCOOL DIY 5th Gen 36,000 BTU 3-Zone Mini Split cheapest?

At Homery, for $2,488.00, 33% under what the other stores charge, as of our latest check.

What reviewers say

4.9 / 5273 ratings

Owners rate it highly and describe a manageable weekend install with some planning. They say it is quieter and more efficient than the units it replaced, heats well through Minnesota winters, and cools a whole home faster than expected.

What people mention

InstallationPraisedOwners say the Quick Connect lines make a weekend DIY install realistic with some planning.
NoisePraisedReviewers report it runs quieter than the units it replaced.
EfficiencyPraisedOwners describe it as more efficient than their old systems.
Cold-weather heatingPraisedBuyers say it heats well even on sub-zero Minnesota nights.
Cooling speedPraisedReviewers say it cools a whole home faster than expected.
Install effortMixedThe install is doable but still requires planning and work across three zones.

From Mrcool Diy Direct

DIY installation with no special tools or training required
36,000 BTU condenser with three 12,000 BTU air handlers (about 550 sq ft each)
Heat pump design cools, heats and dehumidifies
Quick Connect line sets pre-charged with R-454B refrigerant
Control via included remote, MRCOOL Smart Controller app, Amazon Alexa or Google Home
7 Year Compressor warranty plus limited lifetime compressor warranty and 5 Year Parts

Care: Clean the indoor units with a dry or damp cloth; air filter cleaning alerts are automatic.
Guarantee: 7 Year Compressor (plus a limited lifetime compressor warranty) and 5 Year Parts Manufacturer Warranty.
Shipping: Free shipping included on qualifying systems; contiguous 48 states, regional surcharges and exclusions may apply; ships in 1–2 business days.
In the box: Three 12,000 BTU indoor air handlers, Outdoor condenser, Pre-charged Quick Connect line sets, Remote control

About the MRCOOL DIY 5th Gen 36,000 BTU 3-Zone Mini Split

The MRCOOL DIY 5th Gen is a three-zone ductless mini split with a 36,000 BTU outdoor condenser and three 12,000 BTU indoor air handlers. Each air handler covers about 550 square feet. As a heat pump, it cools in summer, heats in winter by pulling heat from outdoors, and dehumidifies in wet seasons.

It is designed for self-installation with no special tools or training. The Quick Connect line sets come pre-charged with R-454B refrigerant, so no HVAC technician is needed to complete the install. The system uses a DC inverter and a sealed design, and the condenser has a Gold Fin coating. The 36,000 BTU system supports up to five indoor units.

Each air handler can be controlled with the included remote, the MRCOOL Smart Controller app for Apple or Android, Amazon Alexa or Google Home. Modes include auto, drying, sleep (which runs for 8 hours once turned on) and a timer. A manual mode for forced cooling is available through a button under the front panel. Each unit's display shows room temperature, troubleshooting codes and low-refrigerant alerts. You can mute each unit to turn off its buzzer and LED display. After a power outage, the system restarts with its previous settings.

Capacity: 36,000 BTU condenser; 3 x 12,000 BTU air handlers
Coverage: About 550 sq ft per air handler
Efficiency: 23 SEER2
Zones: 3 (12K + 12K + 12K); supports up to 5 indoor units
Type: Ductless heat pump: cooling, heating, dehumidifying
Refrigerant: R-454B, pre-charged in Quick Connect line sets
Controls: Remote, MRCOOL Smart Controller app, Amazon Alexa, Google Home
Features: DC inverter, Follow Me, low ambient cooling, sleep mode, timer, mute function
Care: Clean indoor units with a dry or damp cloth; automatic air filter cleaning alerts