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MRCOOL  |  SKU: DIYM327HPW05D21
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MRCOOL DIY 5th Gen 4‑Zone 27,000 BTU 23 SEER2 (9k + 9k + 9k) Ductless Mini‑Split Air Conditioner & Heat Pump DIYM327HPW05D21

$4,488.00 USD $4,988.00

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Description

MRCOOL DIY 5th Gen 4‑Zone 27,000 BTU 23 SEER2 (9k + 9k + 9k) Ductless Mini‑Split Air Conditioner & Heat Pump DIYM327HPW05D21

The MRCOOL DIY 5th Gen 4‑Zone 27,000 BTU 23 SEER2 (9k + 9k + 9k) Ductless Mini‑Split Air Conditioner and Heat Pump DIYM327HPW05D21 is engineered for homeowners seeking customizable comfort and genuine DIY installation ease. Built around the MRCOOL DIY 5th Generation multi‑zone condenser, this system delivers efficient heating and cooling to four separate zones, each managed by its dedicated 9,000 BTU wall‑mounted air handler — ideal for bedrooms, offices, bonus rooms, or guest spaces.

Installation is simplified with MRCOOL’s QuickConnect technology, eliminating the need for vacuum pumps, refrigerant handling, or licensed HVAC labor. Factory‑sealed line sets arrive pre‑charged with eco‑friendly R‑454B refrigerant, providing flexibility for longer installation runs without extra tools or HVAC expertise.

Advanced comfort features like Gold Fin corrosion protection, Follow Me temperature sensing, and smart home control through the MRCOOL Smart HVAC Controller allow full system management from your phone or via Amazon Alexa and Google Assistant. Whether you’re conditioning multiple rooms or balancing zone sizing for extended reach, this system offers professional‑like performance with true DIY simplicity.

Features

  • True DIY installation with QuickConnect line sets — no vacuum pump or refrigerant handling required.

  • Balanced 4‑zone conditioning with three 9,000 BTU wall‑mounted air handlers for independent temperature control.

  • Factory‑sealed, pre‑charged R‑454B refrigerant for eco‑friendly performance.

  • Smart control compatibility including MRCOOL Smart HVAC Controller, Amazon Alexa, and Google Assistant.

  • Gold Fin corrosion protection and Follow Me temperature sensing for enhanced reliability and comfort.

Specifications

Specification Detail
Model DIYM327HPW05D21
System Type 4‑Zone Ductless Mini‑Split Air Conditioner & Heat Pump
Total Cooling/Heating Capacity 27,000 BTU
Configuration (9k + 9k + 9k) Air Handlers
Line Sets Included (3) 25 ft QuickConnect pre‑charged sets
Refrigerant R‑454B
Voltage 208/230 V
Phase Single Phase
Zones Supported Up to 4
Condenser Max Breaker 35 Amps
Condenser Minimum Circuit Ampacity 30.5 Amps
Installation True DIY – No HVAC license required

What’s Included 

✔ MRCOOL® DIY® 4-Zone Outdoor Condenser

• Model: DIY-MULTI4-27HP230D-O

• 27,000 BTU | 208/230V | DC Inverter Heat Pump

• Max Breaker: 35A | Min Circuit Ampacity: 30.5A

✔ (3) MRCOOL® DIY® 9K BTU Wall-Mounted Air Handlers

• Model: DIY-09-HP-WMAH-230D25-O

• Independent zone control

• Ideal for rooms up to ~350 sq. ft. each

✔ (3) MRCOOL® DIY® 25 ft QuickConnect® Line Sets

• Model: DIY25-1438-O

• Pre-charged with R-454B refrigerant

✔ Wireless remotes for each zone

✔ DIY® QuickConnect® fittings

✔ Factory-sealed refrigerant system

Frequently Asked Questions (FAQ's)

Why choose 25-ft line sets instead of 16-ft?

25-ft line sets allow more flexible condenser placement and longer runs between zones.

Is this system DIY-install friendly?

Yes. DIY® QuickConnect® eliminates vacuuming, gauges, and refrigerant handling.

Can each room be set to a different temperature?

Yes. Each air handler operates independently with its own remote and thermostat.

Does this system work with smart devices?

Yes. Compatible with the MRCOOL® Smart HVAC Controller®, Alexa, and Google Assistant.

Is R-454B refrigerant future-proof?

Yes. R-454B meets current and upcoming efficiency and environmental standards.

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